4.6 Article

The genetic interaction of REVOLUTA and WRKY53 links plant development, senescence, and immune responses

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PLOS ONE
卷 17, 期 3, 页码 -

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PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0254741

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  1. Institutional Strategy of the University of Tuebingen (Deutsche Forschungsgemeinschaft) [ZUK 63]
  2. Alexander von Humboldt Foundation
  3. Deutsche Forschungsgemeinschaft [CRC1101]

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This study uncovers the genetic interaction between two key genes, WRKY53 and REVOLUTA, in drought-resistant plants, revealing how late and early developmental events are connected. The results also highlight the crucial roles of these genes in plant development and immunity.
In annual plants, tight coordination of successive developmental events is of primary importance to optimize performance under fluctuating environmental conditions. The recent finding of the genetic interaction of WRKY53, a key senescence-related gene with REVOLUTA, a master regulator of early leaf patterning, raises the question of how early and late developmental events are connected. Here, we investigated the developmental and metabolic consequences of an alteration of the REVOLUTA and WRKY53 gene expression, from seedling to fruiting. Our results show that REVOLUTA critically controls late developmental phases and reproduction while inversely WRKY53 determines vegetative growth at early developmental stages. We further show that these regulators of distinct developmental phases frequently, but not continuously, interact throughout ontogeny and demonstrated that their genetic interaction is mediated by the salicylic acid (SA). Moreover, we showed that REVOLUTA and WRKY53 are keys regulatory nodes of development and plant immunity thought their role in SA metabolic pathways, which also highlights the role of REV in pathogen defence. Together, our findings demonstrate how late and early developmental events are tightly intertwined by molecular hubs. These hubs interact with each other throughout ontogeny, and participate in the interplay between plant development and immunity.

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