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DOI | 10.1016/j.envexpbot.2018.11.021 |
Bacillus pumilus alleviates drought stress and increases metabolite accumulation in Glycyrrhiza uralensis Fisch. | |
Xie, Zhicai1; Chu, Yuankui3; Zhang, Wenjin1; Lang, Duoyong4; Zhang, Xinhui1,2 | |
发表日期 | 2019 |
ISSN | 0098-8472 |
EISSN | 1873-7307 |
卷号 | 158页码:99-106 |
英文摘要 | Drought is a major limiting factor of plant productivity worldwide and its incidence is predicted to increase with climate changing. Endophytes are non-pathogenic plant-associated bacteria that can play an significant role in improving plant tolerance to drought. Here, the effects of Bacillus pumilus (B. pumilus) inoculation on growth, metabolite accumulation and related protein expression, and it's mechanism focusing on antioxidant defense of Glycyrrhiza uralensis Fisch. (G. uralensis) subjected to drought stress were investigated under controlled conditions. Drought stress induced oxidative damage and further decreased growth and secondary metabolites in G. uralensis. Exposure of inoculated plant to drought-stress led to significant increase in total biomass by 34.9%, and in oxygen species and antioxidants while decrease in lipid peroxidation level, compared to non-inoculated plants grown under similar conditions. There was a significant effect of the endophyte on plant metabolism; higher levels of total flavonoids, total polysaccharide and glycyrrhizic acid were recorded in roots of colonized plants compared to non-colonized ones. Furthermore, the expression of HMGR, SQS and beta-AS, key enzymes for glycyrrhizic acid synthesis, significantly increased by B. pumilus inoculation. Taken together, our results indicated that B. pumilus improves G. uralensis growth under drought stress through the modification of antioxidants accumulation and enhances glycyrrhizic acid content by the incremental expression of key enzymes. These results will contribute to the development of a microbial agent to improve the yield and quality of medical plants exposed to environmental stresses. |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
来源期刊 | ENVIRONMENTAL AND EXPERIMENTAL BOTANY
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93017 |
作者单位 | 1.Ningxia Med Univ, Coll Pharm, Yinchuan 750004, Peoples R China; 2.Ningxia Med Univ, Ningxia Engn & Technol Res Ctr Hui Med Modernizat, Ningxia Collaborat Innovat Ctr Hui Med, Key Lab Hui Ethn Med Modernizat,Minist Educ, Yinchuan 750004, Peoples R China; 3.Ningxia Med Univ, Gen Hosp, Dept Lab Med, Yinchuan 750004, Peoples R China; 4.Ningxia Med Univ, Lab Anim Ctr, Yinchuan 750004, Peoples R China |
推荐引用方式 GB/T 7714 | Xie, Zhicai,Chu, Yuankui,Zhang, Wenjin,et al. Bacillus pumilus alleviates drought stress and increases metabolite accumulation in Glycyrrhiza uralensis Fisch.[J],2019,158:99-106. |
APA | Xie, Zhicai,Chu, Yuankui,Zhang, Wenjin,Lang, Duoyong,&Zhang, Xinhui.(2019).Bacillus pumilus alleviates drought stress and increases metabolite accumulation in Glycyrrhiza uralensis Fisch..ENVIRONMENTAL AND EXPERIMENTAL BOTANY,158,99-106. |
MLA | Xie, Zhicai,et al."Bacillus pumilus alleviates drought stress and increases metabolite accumulation in Glycyrrhiza uralensis Fisch.".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 158(2019):99-106. |
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