植物种子内生细菌组的研究进展

种子是种子植物的繁殖器官，也是多种有益微生物和病原菌的传递载体。种子微生物与植物的生长发育、健康程度、品质及产量等密切相关。随着微生物生态学和微生物组学技术的发展，国内外有关植物微生物组的研究突飞猛进，尤其植物微生态相关的根际微生物组和叶际微生物组的研究已经成为焦点和热点。相比之下，对植物种子内生微生物组的研究还尚未引起足够的重视。细菌是种子内生微生物的主要类群，本文将重点从种子内生细菌的类群组成、生物学功能、传播途径和核心微生物组四个方面对近年来的研究进展进行概括总结，剖析当前种子内生微生物组研究领域亟待解决的问题以及未来的研究方向与思路。

Advances in seed endophytic bacteriome

Seed, the specific reproductive organ of spermatophyte, is recognized as a potent reservoir and vector for beneficial and pathogenic microorganisms which play important roles in the growth, development, health, quality, and yield of plants. Plant microbiome, especially rhizosphere microbiome and phyllosphere microbiome, has attracted wide attention and flourished with the development of microbial ecology and related technology. However, seed microbiome is still a virgin field absent from enough concern. Bacteria are well known as the dominant microorganisms in seed endophytes. In this review we summarized the progress in the composition, biological function, transmission, and core microbiome of seed bacteriome. We further expounded the definition and significance of core microbiome in seed endophytes and proposed the questions to be solved, aiming to provide guidance for the future research in the leading-edge area.