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Microbiome convergence enables siderophore-secreting-rhizobacteria to improve iron nutrition and yield of peanut intercropped with maize.


ABSTRACT: Intercropping has the potential to improve plant nutrition as well as crop yield. However, the exact mechanism promoting improved nutrient acquisition and the role the rhizosphere microbiome may play in this process remains poorly understood. Here, we use a peanut/maize intercropping system to investigate the role of root-associated microbiota in iron nutrition in these crops, combining microbiome profiling, strain and substance isolation and functional validation. We find that intercropping increases iron nutrition in peanut but not in maize plants and that the microbiota composition changes and converges between the two plants tested in intercropping experiments. We identify a Pseudomonas secreted siderophore, pyoverdine, that improves iron nutrition in glasshouse and field experiments. Our results suggest that the presence of siderophore-secreting Pseudomonas in peanut and maize intercropped plays an important role in iron nutrition. These findings could be used to envision future intercropping practices aiming to improve plant nutrition.

SUBMITTER: Wang N 

PROVIDER: S-EPMC10825131 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

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Microbiome convergence enables siderophore-secreting-rhizobacteria to improve iron nutrition and yield of peanut intercropped with maize.

Wang Nanqi N   Wang Tianqi T   Chen Yu Y   Wang Ming M   Lu Qiaofang Q   Wang Kunguang K   Dou Zhechao Z   Chi Zhiguang Z   Qiu Wei W   Dai Jing J   Niu Lei L   Cui Jianyu J   Wei Zhong Z   Zhang Fusuo F   Kümmerli Rolf R   Zuo Yuanmei Y  

Nature communications 20240129 1


Intercropping has the potential to improve plant nutrition as well as crop yield. However, the exact mechanism promoting improved nutrient acquisition and the role the rhizosphere microbiome may play in this process remains poorly understood. Here, we use a peanut/maize intercropping system to investigate the role of root-associated microbiota in iron nutrition in these crops, combining microbiome profiling, strain and substance isolation and functional validation. We find that intercropping inc  ...[more]

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