1.Herbal Textual Research on Patriniae Herba in Famous Classical Formulas
Yu SHI ; Zhen ZENG ; Feng ZHOU ; Yihan WANG ; Yanmeng LIU ; Yang YANG ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):248-257
By consulting ancient and modern literature, this article systematically reviews and verifies the historical evolution of the herbal medicine known as Baijiang across various dimensions, including name, origin, scientific name verification, medicinal parts, production area, quality, harvesting and processing, as well as its nature, taste, and therapeutic effects, in order to provide a reference for the development and utilization of famous classical formulas containing Patriniae Herba. Patriniae Herba has a long history of use. It derives its name from the distinctive musty odor of its roots, which resembles spoiled soy sauce. However, due to its alias Kucai, there has been much confusion with other plants. Since the Ming dynasty, various plants have been used interchangeably as Baijiang. Herbal textual research showed that Patriniae Herba was first recorded in Shennong Bencaojing, and throughout history, Baijiang has been recognized as its standard name, though it has also been known by alternative names such as Luchang, Lujiang, and Suanyi. The main sources used throughout the ages were Patrinia scabiosaefolia or P. villosa, which is consistent with the 1977 edition of the Pharmacopoeia of the People's Republic of China. However, while the roots were traditionally used medicinally, the whole plant is now more commonly used in modern practice. In addition, the whole plants of Thlaspi arvense from the Cruciferae family and Sonchus brachyotus from the Compositae family are commonly used as regional substitutes for Baijiang. According to ancient records, Patriniae Herba was primarily found in Jiangxia(present-day eastern Hubei province) and Jiangdong(the region south of the lower reaches of the Yangtze River), but modern literature shows that it is distributed throughout the country without a distinct geographical origin. In ancient times, the roots were harvested in August and sun-dried, today, the whole plant is typically dug up in summer or autumn and sun-dried. In recent times, the quality has been summarized as being best when the roots are long, the leaves are abundant and green, and the aroma is strong. Regarding the processing, ancient methods often involved baking(drying over fire), while modern methods typically involve removing impurities, washing, and then cutting and drying the segments. The effects of Patriniae Herba are to clear heat and detoxify, eliminate blood stasis and drain pus. During the Han and Northern and Southern dynasties, it was used to treat skin diseases caused by heat, abscesses, postpartum diseases, and rheumatism, during the Five dynasties period, its therapeutic applications expanded to include diseases of the five senses, and by the modern era, conditions such as neurasthenia and insomnia were added. Regarding its properties and taste, it was recorded as bitter and neutral during the Han dynasty. By the Tang dynasty, it was slightly cold, with a taste of acrid and bitter. During the Yuan and Ming dynasties, it was mostly slightly cold and neutral, with a bitter and salty taste. In the Qing dynasty and modern times, it was mostly bitter and neutral, and in contemporary times, it has evolved to a taste of acrid, bitter, and cool. Based on the results of this study, it is recommended that when developing and utilizing famous classical formulas containing Patriniae Herba, one should select the entire herb of the historically mainstream sources, P. scabiosaefolia or P. villosa from the Valerianaceae family, and choose the processing method according to the prescription requirements. It is recommended to use raw products without specific requirements.
2.Herbal Textual Research on Patriniae Herba in Famous Classical Formulas
Yu SHI ; Zhen ZENG ; Feng ZHOU ; Yihan WANG ; Yanmeng LIU ; Yang YANG ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):248-257
By consulting ancient and modern literature, this article systematically reviews and verifies the historical evolution of the herbal medicine known as Baijiang across various dimensions, including name, origin, scientific name verification, medicinal parts, production area, quality, harvesting and processing, as well as its nature, taste, and therapeutic effects, in order to provide a reference for the development and utilization of famous classical formulas containing Patriniae Herba. Patriniae Herba has a long history of use. It derives its name from the distinctive musty odor of its roots, which resembles spoiled soy sauce. However, due to its alias Kucai, there has been much confusion with other plants. Since the Ming dynasty, various plants have been used interchangeably as Baijiang. Herbal textual research showed that Patriniae Herba was first recorded in Shennong Bencaojing, and throughout history, Baijiang has been recognized as its standard name, though it has also been known by alternative names such as Luchang, Lujiang, and Suanyi. The main sources used throughout the ages were Patrinia scabiosaefolia or P. villosa, which is consistent with the 1977 edition of the Pharmacopoeia of the People's Republic of China. However, while the roots were traditionally used medicinally, the whole plant is now more commonly used in modern practice. In addition, the whole plants of Thlaspi arvense from the Cruciferae family and Sonchus brachyotus from the Compositae family are commonly used as regional substitutes for Baijiang. According to ancient records, Patriniae Herba was primarily found in Jiangxia(present-day eastern Hubei province) and Jiangdong(the region south of the lower reaches of the Yangtze River), but modern literature shows that it is distributed throughout the country without a distinct geographical origin. In ancient times, the roots were harvested in August and sun-dried, today, the whole plant is typically dug up in summer or autumn and sun-dried. In recent times, the quality has been summarized as being best when the roots are long, the leaves are abundant and green, and the aroma is strong. Regarding the processing, ancient methods often involved baking(drying over fire), while modern methods typically involve removing impurities, washing, and then cutting and drying the segments. The effects of Patriniae Herba are to clear heat and detoxify, eliminate blood stasis and drain pus. During the Han and Northern and Southern dynasties, it was used to treat skin diseases caused by heat, abscesses, postpartum diseases, and rheumatism, during the Five dynasties period, its therapeutic applications expanded to include diseases of the five senses, and by the modern era, conditions such as neurasthenia and insomnia were added. Regarding its properties and taste, it was recorded as bitter and neutral during the Han dynasty. By the Tang dynasty, it was slightly cold, with a taste of acrid and bitter. During the Yuan and Ming dynasties, it was mostly slightly cold and neutral, with a bitter and salty taste. In the Qing dynasty and modern times, it was mostly bitter and neutral, and in contemporary times, it has evolved to a taste of acrid, bitter, and cool. Based on the results of this study, it is recommended that when developing and utilizing famous classical formulas containing Patriniae Herba, one should select the entire herb of the historically mainstream sources, P. scabiosaefolia or P. villosa from the Valerianaceae family, and choose the processing method according to the prescription requirements. It is recommended to use raw products without specific requirements.
3.Herbal Textual Research on Zanthoxylum armatum and Zanthoxyli Radix in Famous Classical Formulas
Zhen ZENG ; Yanmeng LIU ; Yihan WANG ; Yapeng WANG ; Erwei HAO ; Chun YAO ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):252-262
This article systematically analyzes the historical evolution of the name, origin, medicinal parts, harvesting and processing, and other aspects of Manjiao and Zanthoxyli Radix by referring to the herbal medicine, medical books, prescription books and other documents of the past dynasties, combined with the relevant modern research materials, in order to provide a basis for the development of famous classical formulas containing the two medicinal materials. According to the herbal textual research, Manjiao was first recorded in Shennong Bencaojing of the Han dynasty with aliases such as Zhujiao, Goujiao and Zhijiao. Throughout history, Manjiao was sourced from the stems and roots of Zanthoxylum armatum in the Rutaceae family, and its leaves and fruits can also be used in medicine. The traditional recorded production area was mainly in Yunzhong(now Tuoketuo region in Inner Mongolia), with mentions in Zhejiang, Hunan, Fujian, Guangdong, Guangxi, Yunnan, Taiwan, and other provinces. Presently, this species is distributed from the south of Shandong, to Hainan, Taiwan, Tibet and other regions. The roots can be harvested year-round, while the fruits are harvested in autumn after maturity. In ancient times, the roots and stems were mostly used for brewing or soaking in wine, whereas nowadays, the roots are often sliced and then used as a raw material in traditional Chinese medicine, and the fruits should be stir-fried before use. Manjiao has a bitter taste and warm property, and was historically used to treat wind-cold dampness, joint pain, limb numbness, and knee pain. Modern researches have summarized its effects as dispelling wind, dispersing cold, promoting circulation, and relieving pain, and it is used for treating rheumatoid arthritis, toothache, bruises, as well as an anthelmintic. Zanthoxyli Radix initially known as Rudi Jinniugen, recorded in Bencao Qiuyuan of the Qing dynasty, with the alternate name of Liangbianzhen. In recent times, it is more commonly referred to as Liangmianzhen, sourced from the dried roots of Z. nitidum of the Rutaceae family, mainly produced in Guangxi and Guangdong. It can be harvested throughout the year, cleaned, sliced, and dried after harvesting. Zanthoxyli Radix is pungent, bitter, warm and slightly toxic, with the functions of promoting blood circulation, removing stasis, relieving pain, dispelling wind, and resolving swelling. Based on the results of herbal textual research, it is clarified that the ancient Manjiao and the modern Zanthoxyli Radix are not the same species. This article corrects the mistaken belief of by previous scholars that Zanthoxyli Radix is the same as ancient Manjiao, and suggests that formulas described as Manjiao should use Z. armatum as the medicinal herb, while those described as Liangmianzhen or Rudi Jinniu should use Z. nitidum. The processing was performed according to the processing requirements prescribed in the formulas, otherwise, the raw products are recommended for use.
4.Herbal Textual Research on Zanthoxylum armatum and Zanthoxyli Radix in Famous Classical Formulas
Zhen ZENG ; Yanmeng LIU ; Yihan WANG ; Yapeng WANG ; Erwei HAO ; Chun YAO ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):252-262
This article systematically analyzes the historical evolution of the name, origin, medicinal parts, harvesting and processing, and other aspects of Manjiao and Zanthoxyli Radix by referring to the herbal medicine, medical books, prescription books and other documents of the past dynasties, combined with the relevant modern research materials, in order to provide a basis for the development of famous classical formulas containing the two medicinal materials. According to the herbal textual research, Manjiao was first recorded in Shennong Bencaojing of the Han dynasty with aliases such as Zhujiao, Goujiao and Zhijiao. Throughout history, Manjiao was sourced from the stems and roots of Zanthoxylum armatum in the Rutaceae family, and its leaves and fruits can also be used in medicine. The traditional recorded production area was mainly in Yunzhong(now Tuoketuo region in Inner Mongolia), with mentions in Zhejiang, Hunan, Fujian, Guangdong, Guangxi, Yunnan, Taiwan, and other provinces. Presently, this species is distributed from the south of Shandong, to Hainan, Taiwan, Tibet and other regions. The roots can be harvested year-round, while the fruits are harvested in autumn after maturity. In ancient times, the roots and stems were mostly used for brewing or soaking in wine, whereas nowadays, the roots are often sliced and then used as a raw material in traditional Chinese medicine, and the fruits should be stir-fried before use. Manjiao has a bitter taste and warm property, and was historically used to treat wind-cold dampness, joint pain, limb numbness, and knee pain. Modern researches have summarized its effects as dispelling wind, dispersing cold, promoting circulation, and relieving pain, and it is used for treating rheumatoid arthritis, toothache, bruises, as well as an anthelmintic. Zanthoxyli Radix initially known as Rudi Jinniugen, recorded in Bencao Qiuyuan of the Qing dynasty, with the alternate name of Liangbianzhen. In recent times, it is more commonly referred to as Liangmianzhen, sourced from the dried roots of Z. nitidum of the Rutaceae family, mainly produced in Guangxi and Guangdong. It can be harvested throughout the year, cleaned, sliced, and dried after harvesting. Zanthoxyli Radix is pungent, bitter, warm and slightly toxic, with the functions of promoting blood circulation, removing stasis, relieving pain, dispelling wind, and resolving swelling. Based on the results of herbal textual research, it is clarified that the ancient Manjiao and the modern Zanthoxyli Radix are not the same species. This article corrects the mistaken belief of by previous scholars that Zanthoxyli Radix is the same as ancient Manjiao, and suggests that formulas described as Manjiao should use Z. armatum as the medicinal herb, while those described as Liangmianzhen or Rudi Jinniu should use Z. nitidum. The processing was performed according to the processing requirements prescribed in the formulas, otherwise, the raw products are recommended for use.
5.Study on Kinetic and Static Tasks With Different Resistance Coefficients in Post-stroke Rehabilitation Training Based on Functional Near-infrared Spectroscopy
Ling-Di FU ; Jia-Xuan DOU ; Ting-Ting YING ; Li-Yong YIN ; Min TANG ; Zhen-Hu LIANG
Progress in Biochemistry and Biophysics 2025;52(7):1890-1903
ObjectiveFunctional near-infrared spectroscopy (fNIRS), a novel non-invasive technique for monitoring cerebral activity, can be integrated with upper limb rehabilitation robots to facilitate the real-time assessment of neurological rehabilitation outcomes. The rehabilitation robot is designed with 3 training modes: passive, active, and resistance. Among these, the resistance mode has been demonstrated to yield superior rehabilitative outcomes for patients with a certain level of muscle strength. The control modes in the resistance mode can be categorized into dynamic and static control. However, the effects of different control modes in the resistance mode on the motor function of patients with upper limb hemiplegia in stroke remain unclear. Furthermore, the effects of force, an important parameter of different control modes, on the activation of brain regions have rarely been reported. This study investigates the effects of dynamic and static resistance modes under varying resistance levels on cerebral functional alterations during motor rehabilitation in post-stroke patients. MethodsA cohort of 20 stroke patients with upper limb dysfunction was enrolled in the study, completing preparatory adaptive training followed by 3 intensity-level tasks across 2 motor paradigms. The bilateral prefrontal cortices (PFC), bilateral primary motor cortices (M1), bilateral primary somatosensory cortices (S1), and bilateral premotor and supplementary motor cortices (PM) were examined in both the resting and motor training states. The lateralization index (LI), phase locking value (PLV), network metrics were employed to examine cortical activation patterns and topological properties of brain connectivity. ResultsThe data indicated that both dynamic and static modes resulted in significantly greater activation of the contralateral M1 area and the ipsilateral PM area when compared to the resting state. The static patterns demonstrated a more pronounced activation in the contralateral M1 in comparison to the dynamic patterns. The results of brain network analysis revealed significant differences between the dynamic and resting states in the contralateral PFC area and contralateral M1 area (F=4.709, P=0.038), as well as in the contralateral PM area and ipsilateral M1 area (F=4.218, P=0.049). Moreover, the findings indicated a positive correlation between the activation of the M1 region and the increase in force in the dynamic mode, which was reversed in the static mode. ConclusionBoth dynamic and static resistance training modes have been demonstrated to activate the corresponding brain functional regions. Dynamic resistance modes elicit greater oxygen changes and connectivity to the region of interest (ROI) than static resistance modes. Furthermore, the effects of increasing force differ between the two modes. In patients who have suffered a stroke, dynamic modes may have a more pronounced effect on the activation of exercise-related functional brain regions.
6.Herbal Textual Research on Abri Herba and Abri Mollis Herba in Famous Classical Formulas
Zhen ZENG ; Yanmeng LIU ; Yihan WANG ; Erwei HAO ; Chun YAO ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):193-201
This article systematically analyzes the historical evolution of the name, origin, academic name, medicinal parts, origin, harvesting, processing and other aspects of Abri Herba and Abri Mollis Herba by referring to the herbal medicine, medical books, prescription books and other documents of the past dynasties, combined with the modern literature, so as to provide a basis for the development of famous classical formulas containing this type of medicinal materials. According to the herbal textual research, Abri Herba was first recorded in Lingnan Caiyaolu, with other aliases such as Huangtoucao and Xiye Longlincao. It originates from the dried whole plant of Abrus cantoniensis, a Fabaceae plant, which can be used medicinally except for its fruits. Currently, this species is mainly distributed in Guangdong and Guangxi, and also found in Hunan and Thailand, it can be harvested throughout the year, mainly in spring and autumn. The roots, stems, and leaves can be used for medicinal purposes, but the pods are toxic and need to be removed. After harvesting, impurities and pods are removed, and it is dried and processed for medicinal use. Abri Herba has a sweet and slightly bitter taste, is cool in nature, and is associated with the liver and stomach meridians, it is used for clearing heat and relieving dampness, dispersing blood stasis and relieving pain, and is mainly used to treat jaundice-type hepatitis, stomach pain, rheumatic bone pain, contusion and ecchymosis pain, and mastitis. Abri Mollis Herba was first recorded in the 1982 edition of Zhongyaozhi as another origin for Abri Herba, and was singled out in some monographs such as Xinhua Bencao Gangyao in 1988 for use, while some other monographs use it as a local habitual products or confused products of Abri Herba with aliases such as Daye Jigucao, Qingtingteng, and Maoxiangsi. It comes from the dried whole herb of A. mollis without pods, and is mainly produced in Guangxi and Guangdong, and occasionally found in Hong Kong, Hainan and Fujian. The collection and processing are similar to Abri Herba, after harvesting, impurities and pods are removed, and it is dried and cut for medicinal use. Abri Mollis Herba has a sweet and light taste, is cool in nature, and is associated with the liver and stomach meridians, with the efficacy of clearing heat and detoxifying, and promoting dampness, it is mainly used to treat infectious hepatitis, mastitis, furuncles, burns and scalds, and pediatric malnutrition. Based on the research, A. mollis was first recorded to be used as a medicine in the same origin as A. cantoniensis, and as plants of the same genus, have similar morphological characteristics, and their medicinal parts, collection and processing, properties and flavors, and meridian affiliations are consistent. And in the folk, Abri Mollis Herba is often used as Abri Herba, which has been used for a long time and is now dominated by the cultivation of A. mollis. So it is recommended that the subsequent version of Chinese Pharmacopoeia should include A. mollis in the origin of Abri Herba, and it is also recommended that in famous classical formulas refered to Jiguccao can use A. cantoniensis and A. mollis as the sources of the herb, refered to Mao Jiguccao can use A. mollis as the sources of the herb. Processing is carried out according to the requirements specified in the original formulas, and raw products are recommended to be included in the medicine if there are no requirements.
7.Herbal Textual Research on Abri Herba and Abri Mollis Herba in Famous Classical Formulas
Zhen ZENG ; Yanmeng LIU ; Yihan WANG ; Erwei HAO ; Chun YAO ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):193-201
This article systematically analyzes the historical evolution of the name, origin, academic name, medicinal parts, origin, harvesting, processing and other aspects of Abri Herba and Abri Mollis Herba by referring to the herbal medicine, medical books, prescription books and other documents of the past dynasties, combined with the modern literature, so as to provide a basis for the development of famous classical formulas containing this type of medicinal materials. According to the herbal textual research, Abri Herba was first recorded in Lingnan Caiyaolu, with other aliases such as Huangtoucao and Xiye Longlincao. It originates from the dried whole plant of Abrus cantoniensis, a Fabaceae plant, which can be used medicinally except for its fruits. Currently, this species is mainly distributed in Guangdong and Guangxi, and also found in Hunan and Thailand, it can be harvested throughout the year, mainly in spring and autumn. The roots, stems, and leaves can be used for medicinal purposes, but the pods are toxic and need to be removed. After harvesting, impurities and pods are removed, and it is dried and processed for medicinal use. Abri Herba has a sweet and slightly bitter taste, is cool in nature, and is associated with the liver and stomach meridians, it is used for clearing heat and relieving dampness, dispersing blood stasis and relieving pain, and is mainly used to treat jaundice-type hepatitis, stomach pain, rheumatic bone pain, contusion and ecchymosis pain, and mastitis. Abri Mollis Herba was first recorded in the 1982 edition of Zhongyaozhi as another origin for Abri Herba, and was singled out in some monographs such as Xinhua Bencao Gangyao in 1988 for use, while some other monographs use it as a local habitual products or confused products of Abri Herba with aliases such as Daye Jigucao, Qingtingteng, and Maoxiangsi. It comes from the dried whole herb of A. mollis without pods, and is mainly produced in Guangxi and Guangdong, and occasionally found in Hong Kong, Hainan and Fujian. The collection and processing are similar to Abri Herba, after harvesting, impurities and pods are removed, and it is dried and cut for medicinal use. Abri Mollis Herba has a sweet and light taste, is cool in nature, and is associated with the liver and stomach meridians, with the efficacy of clearing heat and detoxifying, and promoting dampness, it is mainly used to treat infectious hepatitis, mastitis, furuncles, burns and scalds, and pediatric malnutrition. Based on the research, A. mollis was first recorded to be used as a medicine in the same origin as A. cantoniensis, and as plants of the same genus, have similar morphological characteristics, and their medicinal parts, collection and processing, properties and flavors, and meridian affiliations are consistent. And in the folk, Abri Mollis Herba is often used as Abri Herba, which has been used for a long time and is now dominated by the cultivation of A. mollis. So it is recommended that the subsequent version of Chinese Pharmacopoeia should include A. mollis in the origin of Abri Herba, and it is also recommended that in famous classical formulas refered to Jiguccao can use A. cantoniensis and A. mollis as the sources of the herb, refered to Mao Jiguccao can use A. mollis as the sources of the herb. Processing is carried out according to the requirements specified in the original formulas, and raw products are recommended to be included in the medicine if there are no requirements.
8.Herbal Textual Research on Chrysanthemum indicum in Famous Classical Formulas
Jing WANG ; Zhen ZENG ; Yanmeng LIU ; Yihan WANG ; Qing MA ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(24):190-199
This article systematically analyzes the historical evolution of the name, origin, medicinal parts, harvesting, processing and others of Chrysanthemi Indici by referring to the herbal medicine, medical books, prescription books and other documents of the past dynasties, combined with the relevant modern research materials, in order to provide a basis for the development of famous classical formulas containing this medicinal herb. According to the research, Chrysanthemi Indici was first recorded under the name Kuyi in Bencao Jingjizhu, with aliases such as Yeshanju, Huangjuzai and Lubianju. The botanical source of Chrysanthemi Indici throughout history was Chrysanthemum indicum of the Asteraceae family. It is now distributed in most areas of China, and since the Qing dynasty, the product from Suichang, Zhejiang has been highly regarded. The whole plant can be used as medicine. According to the natural growth laws, the roots were collected in the first lunar month, leaves in the third, stems in the fifth, flowers in the ninth, and fruits in the eleventh, all of which were dried in the shade. In modern times, Chrysanthemi Indici is harvested during their initial blooming in autumn and winter. Since Bencao Gangmu listed Chrysanthemi Indici as a single medicinal material and clarified that all parts have medicinal value, ancient herbal texts began to record the independent medicinal use of Chrysanthemi Indici Flos, and the use of flowers as medicine has become mainstream. In modern times, the quality of Chrysanthemi Indici Flos is summarized to be best when they are dry, yellow, complete, and fragrant. Because Chrysanthemi Indici has a bitter and pungent taste, and is warm, it can eliminate and disperse, often using the power of alcohol to reach and ascend, and is commonly used to treat carbuncles, boils, and scrofula, with consistent properties and effects throughout ancient and modern times. Based on the research results, it is suggested that Chrysanthemi Indici involved in the formulas can be used as C. indicum, which can be used according to the medicinal parts labeled in the original formulas and the requirements of processing, while those without clear medicinal parts and requirements of processing should be used as the whole plant of the dried raw products.
9.Construction of Saccharomyces cerevisiae cell factory for efficient biosynthesis of ferruginol.
Mei-Ling JIANG ; Zhen-Jiang TIAN ; Hao TANG ; Xin-Qi SONG ; Jian WANG ; Ying MA ; Ping SU ; Guo-Wei JIA ; Ya-Ting HU ; Lu-Qi HUANG
China Journal of Chinese Materia Medica 2025;50(4):1031-1042
Diterpenoid ferruginol is a key intermediate in biosynthesis of active ingredients such as tanshinone and carnosic acid.However, the traditional process of obtaining ferruginol from plants is often cumbersome and inefficient. In recent years, the increasingly developing gene editing technology has been gradually applied to the heterologous production of natural products, but the production of ferruginol in microbe is still very low, which has become an obstacle to the efficient biosynthesis of downstream chemicals, such as tanshinone. In this study, miltiradiene was produced by integrating the shortened diterpene synthase fusion protein,and the key genes in the MVA pathway were overexpressed to improve the yield of miltiradiene. Under the shake flask fermentation condition, the yield of miltiradiene reached about(113. 12±17. 4)mg·L~(-1). Subsequently, this study integrated the ferruginol synthase Sm CYP76AH1 and Sm CPR1 to reconstruct the ferruginol pathway and thereby realized the heterologous synthesis of ferruginol in Saccharomyces cerevisiae. The study selected the best ferruginol synthase(Il CYP76AH46) from different plants and optimized the expression of pathway genes through redox partner engineering to increase the yield of ferruginol. By increasing the copy number of diterpene synthase, CYP450, and CPR, the yield of ferruginol reached(370. 39± 21. 65) mg·L~(-1) in the shake flask, which was increased by 21. 57-fold compared with that when the initial ferruginol strain JMLT05 was used. Finally, 1 083. 51 mg·L~(-1) ferruginol was obtained by fed-batch fermentation, which is the highest yield of ferruginol from biosynthesis so far. This study provides not only research ideas for other metabolic engineering but also a platform for the construction of cell factories for downstream products.
Saccharomyces cerevisiae/genetics*
;
Diterpenes/metabolism*
;
Metabolic Engineering
;
Fermentation
;
Abietanes
10.Detection and sequence analysis of broad bean wilt virus 2 on Rehmannia glutinosa.
Xiao-Long DENG ; Jie YAO ; Lang QIN ; Shi-Wen DING ; Tie-Lin WANG ; Kun ZHANG ; Lei CHENG ; Zhen HE
China Journal of Chinese Materia Medica 2025;50(7):1741-1747
To clarify the occurrence and distribution of broad bean wilt virus 2(BBWV2) on Rehmannia glutinosa, this study collected 87 R. glutinosa samples with typical symptoms of viral disease such as chlorosis and crumple from Wenxian county and Wuzhi county in Jiaozuo city, Henan province and Qiaocheng district in Bozhou city, Anhui province. The BBWV2 CP target band was amplified from 37 R. glutinosa samples by RT-PCR technology. The total detection rate reached 42.5%, among which 43.0% was detected in samples from Henan province. The detection rate in samples from Anhui province was 37.5%. 37 BBWV2 CP sequences were obtained by cloning and sequencing of BBWV2 positive samples(data has been submitted to GenBank, accession numbers: PP407959-PP407995), and the sequence analysis of these CP sequences with 91 other BBWV2 isolates in GenBank showed a high genetic diversity with a consistency rate of 70.8%-100%. Meanwhile, phylogenetic analysis showed that BBWV2 could be divided into three groups according to CP sequences, among which the BBWV2 in R. glutinosa isolates obtained in this study were all located in group 3. This study identified the differences in the occurrence, distribution, and genetic diversity of BBWV2 in R. glutinosa from Henan province and Anhui province and provided a theoretical basis for the prevention and control of BBWV2.
Rehmannia/virology*
;
Phylogeny
;
Plant Diseases/virology*
;
China
;
Molecular Sequence Data
;
Fabavirus/classification*

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