Plant flavones enrich rhizosphere Oxalobacteraceae to improve maize performance under nitrogen deprivation

Autor: Xuechen Zhang, Verena Bresgen, Xiaoming He, Marcel Baer, Felix P. Frey, Tian Tian, Nicolaus von Wirén, Kenichi Tsuda, Sofie Goormachtig, Xinping Chen, Marcel Bucher, Peng Yu, Marion Deichmann, Zhen Su, Chunjian Li, Stien Beirinckx, Gabriel Schaaf, Frank Hochholdinger, Yudelsy Antonia Tandron Moya, Bahar S. Razavi
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: NATURE PLANTS
ISSN: 2055-026X
2055-0278
Popis: Beneficial interactions between plant roots and rhizosphere microorganisms are pivotal for plant fitness. Nevertheless, the molecular mechanisms controlling the feedback between root architecture and microbial community structure remain elusive in maize. Here, we demonstrate that transcriptomic gradients along the longitudinal root axis associate with specific shifts in rhizosphere microbial diversity. Moreover, we have established that root-derived flavones predominantly promote the enrichment of bacteria of the taxa Oxalobacteraceae in the rhizosphere, which in turn promote maize growth and nitrogen acquisition. Genetic experiments demonstrate that LRT1-mediated lateral root development coordinates the interactions of the root system with flavone-dependent Oxalobacteraceae under nitrogen deprivation. In summary, these experiments reveal the genetic basis of the reciprocal interactions between root architecture and the composition and diversity of specific microbial taxa in the rhizosphere resulting in improved plant performance. These findings may open new avenues towards the breeding of high-yielding and nutrient-efficient crops by exploiting their interaction with beneficial soil microorganisms.
Databáze: OpenAIRE
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