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The B-type response regulator GmRR11d mediates systemic inhibition of symbiotic nodulation
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The B-type response regulator GmRR11d mediates systemic inhibition of symbiotic nodulation
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Journal Article
The B-type response regulator GmRR11d mediates systemic inhibition of symbiotic nodulation
2022
Overview
Key to the success of legumes is the ability to form and maintain optimal symbiotic nodules that enable them to balance the trade-off between symbiosis and plant growth. Cytokinin is essential for homeostatic regulation of nodulation, but the mechanism remains incompletely understood. Here, we show that a B-type response regulator GmRR11d mediates systemic inhibition of nodulation.
GmRR11d
is induced by rhizobia and low level cytokinin, and GmRR11d can suppress the transcriptional activity of GmNSP1 on
GmNIN1a
to inhibit soybean nodulation. GmRR11d positively regulates cytokinin response and its binding on the
GmNIN1a
promoter is enhanced by cytokinin. Intriguingly, rhizobial induction of
GmRR11d
and its function are dependent upon GmNARK that is a CLV1-like receptor kinase and inhibits nodule number in shoots. Thus, GmRR11d governs a transcriptional program associated with nodulation attenuation and cytokinin response activation essential for systemic regulation of nodulation.
Cytokinin is essential for regulation of nodulation. Here, the authors identified a B-type response regulator GmRR11d that governs a transcriptional program associated with nodulation and cytokinin activation essential for systemic regulation of nodulation.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 38/39
/ 38/89
/ 38/90
/ 82/83
/ 96/21
/ 96/95
/ Enzymes
/ Gene Expression Regulation, Plant
/ Genes
/ Humanities and Social Sciences
/ Kinases
/ Legumes
/ Mutation
/ Nodules
/ Plant Root Nodulation - genetics
/ Proteins
/ Root Nodules, Plant - physiology
/ Science
/ Shoots
/ Soybeans
