Abstract
Pairs polyphylla var. yunnanensis (Paris L.) is a valuable medicinal plant used in traditional Chinese medicine. The market demand for P. polyphylla has increased over time, but it has slow growth and a low natural propagation rate. Endophytic bacteria are bioactive microorganisms that form a mutualistic relationship with host plants in long-term coordinated evolution, and they can promote the growth and accumulation of effective components in host plants. The aims of this study were to identify endophytic bacteria of P. polyphylla and to characterize their properties in promoting plant growth. A total of 10 endophytic bacteria were isolated from rhizomes of P. polyphylla. The isolated endophytes exhibited a variable capacity for indole acetic acid production, phosphate solubilization and nitrogen fixation. To investigate the effects of the endophytes on plant growth, four endophyte strains, G5, J2, G20, and Y2, were selected to compare their ability to promote plant growth. The results indicated that microbial endophytes isolated from P. polyphylla rhizomes play a vital role in improving P. polyphylla plant growth and could be used as inoculants to establish a sustainable crop production system.
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This research was financially supported by the National Nature Science Foundation of China (Grant No. 31860075) and Key R & D program of Yunnan Province, China (grant no. 202103AC100003).
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LT and FL conceived and designed the experiments. LQ and YF wrote the paper. ZS and TS performed the experiment and analysed the data. All authors read and approved the final manuscript.
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Tao, L., Qiuhong, L., Fuqiang, Y. et al. Plant growth-promoting activities of bacterial endophytes isolated from the medicinal plant Pairs polyphylla var. yunnanensis. World J Microbiol Biotechnol 38, 15 (2022). https://doi.org/10.1007/s11274-021-03194-0
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DOI: https://doi.org/10.1007/s11274-021-03194-0