关键词: 野生稻, 内生固氮菌, 促进生长, 微生物肥料

Abstract: Wild rice species are important germplasm resources, which serve as valuable bioresources of functional microorganisms. There are a lot of researches on endophytic nitrogen-fixing bacteria in different host plants at home and abroad, but no report in wild rice. Diverse endophytic bacteria that were found in wild rice at least belongs to 31 generas and 74 species, most of which are facultative endophytic diazotrophs with a wide range of hosts and some of which just had been found for the first time. There is a huge space for the exploration of endophytic diazotrophs in wild rice. The existing research findings focused on the biological characteristics of nitrogen fixing bacteria, such as promote growth and disease resistance aspects. The isolated and identified endophytic diazotrophs in wild rice were summarized and analyzed in this paper, as well as the diversity of their species, habitats and biological functions were comprehensively reviewed, which was aimed to enrich the bioresource of microorganisms used in industrial and agricultural areas, and provide reliable theoretical basis and direction for promoting plant growth and the development of microbial fertilizer.

Key words: wild rice, endophytic diazotrophs, plant-growth promoting, microbial fertilizer