数字农科院2.0

Chinese chestnut did not induce negative plant soil feedback during centuries of growth

文献类型： 外文期刊

作者： Xu Cheng;Zhichun Yan;Qian Li;Lucas Schmitz;Jundi Yan;Yueyang Ge;Yanping Lan;Yaceng Zhao;Yiyang Wang;Guangdong Li;Yang Liu;Martinus Schneijderberg;Liu Yang;Huihui Bian;Aalt D.J. van Dijk;Ling Qin;Qingqin Cao;Ton Bisseling

作者机构：

关键词： （1-0-4）Chinese chestnut;Chrono-series;Ming orchard;Plant-soil feedback;Pseudomonas;Root-associated microbiome;Tree longevity

期刊名称： Science of the Total Environment

ISSN： 0048-9697

年卷期： 2025 年 970 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Certain tree species can reach ages of centuries, whereas lifespan of species like apple are markedly shorter. The latter is caused by negative plant-soil feedback that results in microbiome changes. We hypothesized that tree species with a long lifespan will be able to avoid such negative feedback and their root-associated microbiomes will be similar in trees of different ages. To test this, we used Chinese chestnut (Castanea mollissima) trees, ranging from 8 to 830 years old from a Ming orchard at the Great Wall. Their root-associated microbiomes were analysed by using meta-amplicon sequencing analysis. Their root-associated bacterial microbiomes were rather similar although based on linear regression models we cannot exclude that age has a weak correlation with microbiome compositions. When chestnut seedlings were grown for 3 months in soil associated with young or old trees, the plants were healthy and their growth was similar. This strongly supported that negative feedback had not occurred. Pseudomonas OTU1, a member of the core microbiome and representing >50 % of the rhizosphere community, strongly inhibited growth of chestnut pathogens and stimulated plant growth. Such properties of the microbiome, in combination with a high number of resistance genes can contribute to longevity of chestnut.

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