Analysis of endophytic bacterial community structure and diversity of characteristic rice germplasm resources in Yunnan province, China

Abstract

Abstract Studies on the structure and diversity of endophytic bacteria from characteristic rice seeds are of great significance to complement and develop the research on endophytic bacteria from rice seeds. In this study, high-throughput techniques were used to investigate the microbial community composition and diversity of nine characteristic rice species in Yunnan Province, China, to reveal their dominant bacterial community and explore the relationship between rice varieties and endophytic bacterial communities. A total of 2799 OTUs were detected in the seeds of the nine characteristic rice varieties, of which 829 endophytic OTUs coexisted in nine samples. At the phylum level, Proteobacteria (25.0%-88.6%) was the dominant phyla. At the genus level, the dominant genera were Pantoea (0.4%-28.6%) and Methylorubrum (2.5%-17.5%). The results showed that there were significant differences in microbial community structure and composition among different rice varieties, especially at the genus level, indicating that different rice varieties had certain effects on the structure of endophytic microbiota in seeds.