School of Systems Biomedical Science, Soongsil University, Seoul, Republic of Korea.
Sci Rep. 2024 Oct 8;14(1):23367. doi: 10.1038/s41598-024-73550-1.
Seed microbial communities have been known to have a crucial role in the life cycle of a plant. In this study, we examined the distribution of the fungal communities in three compartments (husk, brown rice, and milled rice) of the fourteen rice seed samples. Ten fungal genera distributed throughout the three compartments of the rice seeds were identified as the core mycobiome of the rice seeds, regardless of collecting regions or cultivars. Based on the diversity analysis, the distribution of the fungal community in milled rice was found to be more diversified, evenly distributed, and differently clustered from the other two compartments. Among the core mycobiome, Moesziomyces dominated almost 80% of the fungal communities in the outer compartments of rice seeds, whereas the abundances of other endophytic pathogenic fungi declined. Our results provide that antagonistic yeast Moesziomyces may be able to control the endogenous pathogenic fungal communities in rice seeds, hence maintaining the quality of rice seeds. In addition, the distribution of fungal communities differs depending on the rice seed's compartment, indicating that the compartment can affect the distribution of the seed microbial community.
种子微生物群落对植物的生命周期起着至关重要的作用。在这项研究中，我们研究了 14 个水稻种子样本中三个隔室（外壳、糙米和精米）中真菌群落的分布。鉴定出分布在水稻种子三个隔室中的十个真菌属是水稻种子核心真菌组，而与收集区域或品种无关。基于多样性分析，发现精米中真菌群落的分布更加多样化、均匀分布且与其他两个隔室聚类不同。在核心真菌组中，近 80%的水稻种子外隔室真菌群落由 Moesziomyces 主导，而其他内生病原真菌的丰度下降。我们的研究结果表明，拮抗酵母 Moesziomyces 可能能够控制水稻种子中的内生病原真菌群落，从而维持水稻种子的质量。此外，真菌群落的分布因水稻种子的隔室而异，这表明隔室会影响种子微生物群落的分布。
