College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan Province, China.
Kunming Institute of Botany, CAS, Kunming, 650201, China.
World J Microbiol Biotechnol. 2021 Dec 8;38(1):15. doi: 10.1007/s11274-021-03194-0.
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.
云南重楼（Paris L.）是一种有价值的药用植物，用于传统中药。随着时间的推移，对云南重楼的市场需求增加了，但它的生长缓慢，自然繁殖率低。内生细菌是与宿主植物在长期协调进化中形成互利关系的生物活性微生物，它们可以促进宿主植物生长和有效成分的积累。本研究旨在鉴定云南重楼的内生细菌，并研究其促进植物生长的特性。从云南重楼的根茎中分离出了 10 种内生细菌。分离出的内生菌表现出可变的吲哚乙酸产生、磷酸盐溶解和固氮能力。为了研究内生菌对植物生长的影响，选择了 4 种内生菌菌株 G5、J2、G20 和 Y2，比较它们促进植物生长的能力。结果表明，从云南重楼根茎中分离出的微生物内生菌在改善云南重楼植物生长方面发挥着重要作用，可作为接种剂来建立可持续的作物生产系统。
