Yao Su-Hang, Zhou Chi, Li Sai-Jun, Li Yu-Han, Shen Cheng-Wen, Tao Yu, Li Xin
Hunan Vegetable Research Institute, Changsha, China.
College of Horticulture, Hunan Agriculture University, Changsha, China.
Front Microbiol. 2024 Aug 26;15:1439630. doi: 10.3389/fmicb.2024.1439630. eCollection 2024.
Microorganisms exhibit intricate interconnections with tea plants; however, despite the well-established role of microorganisms in crop growth and development, research on microbes within the tea plant remains insufficient, particularly regarding endophytic microorganisms.
In this study, we collected samples of leaves and rhizosphere soils from 'Zhuyeqi', 'Baojing Huangjincha#1', 'Baiye#1', and 'Jinxuan' varieties planted.
Our analyses revealed significant variations in tea polyphenol contents among tea varieties, particularly with the 'Zhuyeqi' variety exhibiting higher levels of tea polyphenols (>20% contents). Microbiome studies have revealed that endophytic microbial community in tea plants exhibited higher host specificity compared to rhizospheric microbial community. Analyses of across-ecological niches of the microbial community associated with tea plants revealed that soil bacteria serve as a significant reservoir for endophytic bacteria in tea plants, may play a crucial role in shaping the bacterial community across-ecological niche within the tea plants with higher tea polyphenol levels. In the aforementioned analyses, the microbial community of 'Zhuyeqi' exhibited a higher degree of host specificity for leaf endophytic microorganisms, the topological structure of the co-occurrence network is also more intricate, harboring a greater number of potential core microorganisms within its nodes. A closer examination was conducted on the microbial community of 'Zhuyeqi', further analyses of its endophytic bacteria indicated that its endophytic microbial community harbored a greater abundance of biomarkers, particularly among bacteria, and the enriched and in 'Zhuyeqi' may play distinct roles in disease resistance and drought resilience in tea plants.
In summary, this study has shed light on the intricate relationships of tea plant varieties with their associated microbial communities, unveiling the importance of microorganisms and tea varieties with higher tea polyphenols, and offering valuable insights to the study of microorganisms and tea plants.
微生物与茶树之间存在着复杂的相互联系；然而，尽管微生物在作物生长发育中的作用已得到充分证实，但对茶树体内微生物的研究仍不充分，尤其是关于内生微生物。
在本研究中，我们采集了种植的‘竹叶奇’‘保靖黄金茶1号’‘白叶1号’和‘金萱’品种的叶片和根际土壤样本。
我们的分析表明，不同茶树品种的茶多酚含量存在显著差异，特别是‘竹叶奇’品种的茶多酚含量较高（>20%）。微生物群落研究表明，茶树的内生微生物群落比根际微生物群落表现出更高的宿主特异性。对与茶树相关的微生物群落跨生态位分析表明，土壤细菌是茶树内生细菌的重要来源，可能在塑造茶多酚含量较高的茶树跨生态位细菌群落中起关键作用。在上述分析中，‘竹叶奇’的微生物群落对叶片内生微生物表现出更高程度的宿主特异性，共现网络的拓扑结构也更为复杂，其节点内含有更多潜在的核心微生物。对‘竹叶奇’的微生物群落进行了更深入的研究，对其内生细菌的进一步分析表明，其内生微生物群落含有更丰富的生物标志物，特别是在细菌中，‘竹叶奇’中富集的[具体细菌名称1]和[具体细菌名称2]可能在茶树的抗病性和抗旱性中发挥不同作用。
总之，本研究揭示了茶树品种与其相关微生物群落之间的复杂关系，揭示了微生物和茶多酚含量较高的茶树品种的重要性，并为微生物与茶树的研究提供了有价值的见解。
