Sex-specific interactions shape root phenolics and rhizosphere microbial communities in Populus cathayana
Sex-specific interactions shape root phenolics and rhizosphere microbial communities in Populus cathayana
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性别特异性相互作用塑造青杨根酚类物质和根际微生物群落
DOI：
10.1016/j.foreco.2021.119857
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发表时间：
2022-01
影响因子：
3.7
通讯作者：
Li Chunyang
中科院分区：
文献类型：
--
作者：
Xia Zhichao;He Yue;Korpelainen Helena;Niinemets Ülo;Li Chunyang
以30年生青杨纯雌林（PF）、纯雄林（PM）和雌雄混交林（MS）为研究对象，分析了青杨雌、雄林根系酚类物质和根际微生物群落特征，揭示了青杨根系酚类代谢产物与根际微生物之间的相关性以及性别和邻体效应。雌性的酚类成分之间的变化更intrasexual和intersexual的相互作用相比，男性。因此，性二态性存在于代谢组成和生化可塑性。MS种植园增强了女性和男性的细菌和真菌α多样性。MS人工林的雌、雄真菌群落组成与PF、PM不同，而细菌群落组成无明显差异。细菌和真菌的多样性与特定酚类代谢物的浓度相关，并且分别对根苯甲酸和松脂醇的产生最积极的反应。我们的研究结果表明，性别特异性相互作用影响植物性别-根酚-根际微生物系统，它们可能有助于性别特异性资源利用模式。这些机制的知识将有助于建立雌雄异株植物的人工林。
We assessed root phenolics and rhizosphere microbiomes ofPopulus cathayanafemales and males in the replicated 30-year-old plantations, including pure female plantations (PF), pure male plantations (PM), and mixed female and male plantations (MS) to reveal sex and neighbor effects, and associations between root phenolic metabolites and root-related microbes. The phenolic composition of females varied more between intrasexual and intersexual interactions compared to that of males. Thus, sexual dimorphism was present in the metabolic composition and biochemical plasticity. MS plantations enhanced the bacterial and fungal alpha diversity of both females and males. The composition of fungal communities of females and males in MS plantations was different from that in PF and PM, while such differences were not found in the composition of bacterial communities. Bacterial and fungal diversities were correlated with concentrations of specific phenolic metabolites and were most positively responsive to root benzoic acid and pinoresinol production, respectively. Our findings indicate that sex-specific interactions affect the system of plant sex - root phenolics - rhizosphere microbes, and they may contribute to sex-specific resource utilization patterns. Knowledge of such mechanisms would be helpful when establishing plantations of dioecious plants.
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