内生菌定殖、促生及降低作物有机污染的机理研究(Ⅰ):定殖与促生

Research advances in colonization of endophytes and their role in promoting plant growth and minimizing organic pollution in crop plants:Part Ⅰ:Colonization and plant growth promotion

随着社会经济快速发展,土壤污染和退化问题日益突出。内生菌不仅在促进植物生长、适应逆境和维持植物健康等方面具有明显优势,而且能够有效降低植物体内有机污染物含量,是微生态领域研究的热点。利用功能内生菌研发相关产品与技术,对高效利用污染土壤生产安全农产品具有重要意义,为此本研究通过系列论文进行了总结论述。论文Ⅰ着重从内生菌的来源、定殖于植物体内的途径及影响因素、促生作用机制等方面进行综述,提出了当前内生菌-植物互作研究中存在的问题与今后重点研究的方向。后续的论文Ⅱ将重点论述内生菌降低作物体内有机污染物含量的机理。

The problems of soil pollution and degradation are becoming increasingly prominent with the rapid development of social economy.Endophytic bacteria provide competitive advantages in promoting plant growth,enabling adaption of plant to environmental stress,and preserving plant health,as well as reducing the accumulation of organic pollutants in plant tissues.Endophytic bacteria have become a research hotspot in the field of micro-ecosystem.The efficient utilization of contaminated soils to produce safe agricultural products,by using functional endophytes to develop related products and technologies is of great significance.Thus,we summarize the topic through a series of literature review papers.Part Ⅰ of these serial review papers emphases on the origins,colonization pathways of endophytic microorganisms and related influencing factors,plant-growth promoting properties as well as the mechanisms of plant growth promotion.In addition,this paper specifies the gaps in current research of the interactions between endophytic bacteria and host plants,and suggests the directions for future studies.Subsequently,part Ⅱ of the serial review papers focuses on the mechanisms adopted by endophytes for reducing organic pollution in crop plants.