Relationship between endophytic microbial diversity and grain quality in wheat exposed to multi-generational CO2 elevation

文献类型： 外文期刊

第一作者： Jiang, Miao

作者： Jiang, Miao;Li, Xiangnan;Liu, Shengqun;Song, Fengbin;Wang, Zongshuai;Liu, Fulai;Jiang, Miao;Liu, Fulai

作者机构：

关键词： Elevated CO2; Transgenerational effect; Triticum aestivum; Grain quality; Microbial diversity

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：6.551； 五年影响因子：6.419 ）

ISSN： 0048-9697

年卷期： 2021 年 776 卷

页码：

收录情况： SCI

摘要： To explore the potential association between the diversity of endophytic microorganisms and modifications of grain quality in wheat exposed to multi-generational elevated CO2 concentration, the grain quality attributes and microbial diversity were tested after five generations successively grown in ambient CO2 concentration (F5_A, 400 mu mol L-1) and elevated CO2 concentration (F5_E, 800 mu mol L-1). Elevated CO2 concentration significantly increased the grain number and starch concentration, while decreased the grain protein concentration. Multi-generational exposure to elevated CO2 concentration also led to significant changes in grain amino acid concentration. In response to the elevated CO2 concentration, Pseudomonas, Rhodococcus, Ralstonia, and Klebsiella were the dominant bacterial genera, while Penicillium, Cutaneotrichosporon, Fusarium, Sarocladium, Acremonium and Aspergillus were the dominant fungal genera in wheat grain. A significantly positive correlation was found between Pseudomonas, Penicillium and ratio of starch to protein concentration, implying that the multigenerational CO2 elevation induced modifications in grain quality might be associated with the changes in grain microbial diversity. The results of this study suggest that the endophytic microbes may play an important role in modulating the grain nutritional quality in wheat undermulti-generational e[CO2] exposure, through regulating starch and N metabolism and production of secondary metabolites. (C) 2021 Elsevier B.V. All rights reserved.

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