Jia Xiaoli, Lin Shaoxiong, Zhang Qi, Wang Yuhua, Hong Lei, Li Mingzhe, Zhang Shuqi, Wang Tingting, Jia Miao, Luo Yangxin, Ye Jianghua, Wang Haibin
College of Tea and Food, Wuyi University, Wuyishan 354300, China.
College of Life Science, Longyan University, Longyan 364012, China.
Plants (Basel). 2024 Jul 24;13(15):2029. doi: 10.3390/plants13152029.
It is generally recognized that the quality differences in plant germplasm resources are genetically determined, and that only a good "pedigree" can have good quality. Ecological memory of plants and rhizosphere soil fungi provides a new perspective to understand this phenomenon. Here, we selected 45 tea tree germplasm resources and analyzed the rhizosphere soil fungi, nutrient content and tea quality. We found that the ecological memory of tea trees for soil fungi led to the recruitment and aggregation of dominant fungal populations that were similar across tea tree varieties, differing only in the number of fungi. We performed continuous simulation and validation to identify four characteristic fungal genera that determined the quality differences. Further analysis showed that the greater the recruitment and aggregation of and by tea trees, the greater the rejection of and , the higher the available nutrient content in the soil and the better the tea quality. In summary, our study presents a new perspective, showing that ecological memory between tea trees and rhizosphere soil fungi leads to differences in plants' ability to recruit and aggregate characteristic fungi, which is one of the most important determinants of tea quality. The artificial inoculation of rhizosphere fungi may reconstruct the ecological memory of tea trees and substantially improve their quality.
人们普遍认为，植物种质资源的品质差异是由基因决定的，只有优良的“谱系”才能有好的品质。植物的生态记忆和根际土壤真菌为理解这一现象提供了新的视角。在此，我们选取了45份茶树种质资源，分析了其根际土壤真菌、养分含量和茶叶品质。我们发现，茶树对土壤真菌的生态记忆导致了优势真菌种群的招募和聚集，这些优势真菌种群在茶树品种间相似，只是真菌数量不同。我们进行了连续的模拟和验证，以确定决定品质差异的四个特征真菌属。进一步分析表明，茶树对[具体真菌属1]和[具体真菌属2]的招募和聚集越多，对[具体真菌属3]和[具体真菌属4]的排斥越大，土壤中有效养分含量越高，茶叶品质越好。总之，我们的研究提出了一个新的视角，表明茶树与根际土壤真菌之间的生态记忆导致了植物招募和聚集特征真菌能力的差异，这是茶叶品质最重要的决定因素之一。根际真菌的人工接种可能会重建茶树的生态记忆并大幅提高其品质。
