Harnessing root-foraging capacity to improve nutrient-use efficiency for sustainable maize production

文献类型： 外文期刊

第一作者： Jing, Jingying

作者： Jing, Jingying;Gao, Wei;Cheng, Lingyun;Wang, Xin;Yuan, Lixing;Zhang, Fusuo;Li, Haigang;Shen, Jianbo;Gao, Wei;Duan, Fengying;Rengel, Zed;Rengel, Zed;Cahill, James F.

作者机构：

关键词： Maize; Heterogeneous nutrient supply; Rhizosphere processes; Root management; Root proliferation

期刊名称：FIELD CROPS RESEARCH （ 影响因子：6.145； 五年影响因子：7.234 ）

ISSN： 0378-4290

年卷期： 2022 年 279 卷

页码：

收录情况： SCI

摘要： Producing more food with less input is imperative in feeding the increasing world population. Here, for the first time we characterize the multipartite responses of maize to nutrient-rich patches and demonstrate significant synergistic effects between root morphological and physiological responses on improving nutrient-use efficiency and yield. Our results showed that maize root length, lateral root formation, acid phosphatase (APase) secretion, and expression of ammonium transporter genes increased in the ammonium-containing patches; moreover, ammonium-induced rhizosphere acidification enhanced activity of APase. These root responses were associated with improved maize nutrition and growth even with reduced fertilizer input, suggesting an adaptive benefit of synergistic root foraging strategies. These new findings improve our understanding of root-foraging responses to nutrient-specific cues and are crucial for engineering root and rhizosphere properties to improve nutrient-use efficiency for sustainable crop production.

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