Variation and interaction mechanism between active components in Rheum officinale and rhizosphere soil microorganisms under drought stress.
10.19540/j.cnki.cjcmm.20221208.104
- Author:
Feng-Pu XIE
1
;
Nan WANG
2
;
Jing GAO
3
;
Gang ZHANG
3
;
Zhong-Xing SONG
2
;
Yuan-Yuan LI
1
;
Ya-Li ZHANG
3
;
Duo-Yi WANG
1
;
Rui LI
3
;
Mi-Mi LIU
3
;
Zhi-Shu TANG
4
Author Information
1. State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation),Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry,Shaanxi University of Chinese Medicine Xianyang 712083,China Key Laboratory for Research of "Qin Medicine" of Shaanxi Administration of Traditional Chinese Medicine,College of Pharmacy,Shaanxi University of Chinese Medicine Xi'an 712046,China.
2. State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation),Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry,Shaanxi University of Chinese Medicine Xianyang 712083,China.
3. Key Laboratory for Research of "Qin Medicine" of Shaanxi Administration of Traditional Chinese Medicine,College of Pharmacy,Shaanxi University of Chinese Medicine Xi'an 712046,China.
4. State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation),Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry,Shaanxi University of Chinese Medicine Xianyang 712083,China China Academy of Chinese Medical Sciences Beijing 100700,China.
- Publication Type:Journal Article
- Keywords:
dominant bacteria;
drought stress;
functional distribution;
microbial diversity;
secondary metabolites
- MeSH:
Rhizosphere;
Rheum;
Droughts;
Soil;
Catechin;
Emodin;
Bacteria/metabolism*;
Water/metabolism*;
Firmicutes;
Soil Microbiology
- From:
China Journal of Chinese Materia Medica
2023;48(6):1498-1509
- CountryChina
- Language:Chinese
-
Abstract:
To explore the changes and the reaction mechanisms between soil microecological environment and the content of secon-dary metabolites of plants under water deficit, this study carried out a pot experiment on the 3-leaf stage seedlings of Rheum officinale to analyze their response mechanism under different drought gradients(normal water supply, mild, moderate, and severe drought). The results indicated that the content of flavonoids, phenols, terpenoids, and alkaloids in the root of R. officinale varied greatly under drought stresses. Under mild drought stress, the content of substances mentioned above was comparatively high, and the content of rutin, emodin, gallic acid, and(+)-catechin hydrate in the root significantly increased. The content of rutin, emodin, and gallic acid under severe drought stress was significantly lower than that under normal water supply. The number of species, Shannon diversity index, richness index, and Simpson index of bacteria in the rhizosphere soil were significantly higher than those in blank soil, and the number of microbial species and richness index decreased significantly with the aggravation of drought stresses. In the context of water deficit, Cyanophyta, Firmicutes, Actinobacteria, Chloroflexi, Gemmatimonadetes, Streptomyces, and Actinomyces were the dominant bacteria in the rhizosphere of R. officinale. The relative content of rutin and emodin in the root of R. officinale was positively correlated with the relative abundance of Cyanophyta and Firmicutes, and the relative content of(+)-catechin hydrate and(-)-epicatechin gallate was positively correlated with the relative abundance of Bacteroidetes and Firmicutes. In conclusion, appropriate drought stress can increase the content of secondary metabolites of R. officinale from physiological induction and the increase in the association with beneficial microbe.
