药用植物内生菌对宿主植物促生作用机制研究进展

Mechanism of endophytes of medicinal plants in promoting the growth of host plants

植物内生菌是一类能够代谢产生新颖生物分子和多种酶类的重要微生物资源,在农业、植保、制药等领域具有广阔的应用前景。了解内生菌与药用植物间相互关系是当前促进药用植物生长和提升药材品质的重要途径。植物内生菌资源具有丰富的多样性,对宿主植物生长发挥着重要功能,如固氮、溶磷、产生铁载体、分泌植物激素吲哚乙酸(indole-3-acetic acid,IAA)、产生ACC脱氨酶(1-aminocyclopropane-1-carboxylate deaminase)、增强宿主抗逆性、产生次生代谢产物等。本文通过相关文献回顾,聚焦内生菌与药用植物间的关系,着重探讨药用植物内生菌对宿主植物的促生作用机制,展望新技术在植物内生菌研究方面的应用,以便有效利用分子手段阐明内生菌对药用植物的促生长作用,为其在相关领域的应用提供理论参考。

Plant endophytes,important microbial resources that can produce novel biomolecules and various enzymes through metabolism,have broad application prospects in such fields as agriculture,plant protection,and pharmaceutical industries.It is currently an important way to understand the relationships between endophytes and medicinal plants,for the improvement of both medicinal plants’growth and quality.Thanks to their rich diversity,plant endophytes play a variety of important roles in host plants’growth,such as nitrogen fixation,phosphorus solubilization,siderophore production,plant hormone IAA(indole-3-acetic acid)secretion,ACC(1-aminocyclopropane-1-carboxylate)deaminase production,stress resistance enhancement,and secondary metabolites production.Through a review of relevant literature,this paper focused on the relationship between endophytes and medicinal plants,mainly exploring the growth-promoting mechanism of endophytes of medicinal plants in host plants and envisioning the application of new techniques in the study of plant endophytes.This paper is expected to effectively elucidate the growth-promoting effect of endophytes on medicinal plants by adopting molecular means and to provide theoretical references for their applications in related fields.