Effects of Plant Growth-promoting Rhizobacteria on Physiological Characteristics and Inorganic Elements in Paris polyphylla var. yunnanensis
10.13422/j.cnki.syfjx.20211517
- VernacularTitle:根际促生菌剂对滇重楼生理特性及无机元素的影响
- Author:
Jing-jing ZHAO
1
;
Zhuo-wei LI
1
;
Ling-feng XU
1
;
Dong-qin GUO
1
;
Hai-ling LI
1
;
Nong ZHOU
1
;
Bao-qing DUN
2
Author Information
1. Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs，College of Food and Biological Engineering，Chongqing Three Gorges University，Chongqing 404120，China
2. Institute of Crop Sciences，Chinese Academy of Agricultural Sciences，Beijing 100081，China
- Publication Type:Journal Article
- Keywords:
Paris polyphylla var. yunnanensis;
plant growth-promoting rhizobacteria （PGPR）;
physiological characteristics;
nutrient;
heavy metal elements
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2022;28(2):166-174
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo study the effects of different plant growth-promoting rhizobacteria （PGPR） on the growth of Paris polyphylla var. yunnanensis seedlings and the quality of its medicinal parts， in order to provide reference for the cultivation of high-quality P. polyphylla var. yunnanensis. MethodThe pot culture experiment at room temperature and the single-factor completely random design were employed for exploring the effects of five PGPR on physiological characteristics and inorganic elements of P. polyphylla var. yunnanensis. ResultThe results showed that the exogenous inoculation of different PGPR promoted the growth and development of P. polyphylla var. yunnanensis to varying degrees， delayed the senescence of leaves， and improved the medicinal value of new and old rhizomes. Compared with the non-inoculated control， the exogenous inoculation of compound microbial fertilizer （FH） and microbial agent Sanju Guanjin liquid （SJ） enhanced the root vigor， increased the content of photosynthetic pigments and the activities of anti-oxidant enzymes ［superoxide dismutase （SOD）， catalase （CAT）， and peroxidase （POD）］， and reduced the content of malondialdehyde （MDA） in leaves. Their inhibition rates against MDA were 10.46%-39.62% and 20.99%-53.12%， respectively. With the growth of P. polyphylla var. yunnanensis， the inhibition rate against MDA gradually increased， which effectively delayed the senescence of P. polyphylla var. yunnanensis leaves. In addition， the exogenous inoculation of different PGPR promoted the accumulation of nutrient elements in new and old rhizomes， lowered the heavy metal content to varying degrees， and improved the medicinal value of P. polyphylla var. yunnanensis rhizomes. ConclusionFH and SJ have exhibited the best promoting effect on the growth of P. polyphylla var. yunnanensis seedlings and also the best regulatory effect on the medicinal value of P. polyphylla var. yunnanensis rhizomes， which has provided reference for the application and promotion of PGPR in the growth of P. polyphylla var. yunnanensis.
