Plant immunity: Rice XA21-mediated resistance to bacterial infection.

María Florencia Ercoli, Dee Dee Luu, Ellen Youngsoo Rim, Alexandra Shigenaga, Artur Teixeira de Araujo, Mawsheng Chern, Rashmi Jain, Randy Ruan, Anna Joe, Valley Stewart, Pamela Ronald

Proceedings of the National Academy of Sciences of the United States of America 2022 Feb 22

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In this article, we describe the development of the plant immunity field, starting with efforts to understand the genetic basis for disease resistance, which ∼30 y ago led to the discovery of diverse classes of immune receptors that recognize and respond to infectious microbes. We focus on knowledge gained from studies of the rice XA21 immune receptor that recognizes RaxX (required for activation of XA21 mediated immunity X), a sulfated microbial peptide secreted by the gram-negative bacterium Xanthomonas oryzae pv. oryzae. XA21 is representative of a large class of plant and animal immune receptors that recognize and respond to conserved microbial molecules. We highlight the complexity of this large class of receptors in plants, discuss a possible role for RaxX in Xanthomonas biology, and draw attention to the important role of sulfotyrosine in mediating receptor-ligand interactions. Copyright © 2022 the Author(s). Published by PNAS.

Citation

María Florencia Ercoli, Dee Dee Luu, Ellen Youngsoo Rim, Alexandra Shigenaga, Artur Teixeira de Araujo, Mawsheng Chern, Rashmi Jain, Randy Ruan, Anna Joe, Valley Stewart, Pamela Ronald. Plant immunity: Rice XA21-mediated resistance to bacterial infection. Proceedings of the National Academy of Sciences of the United States of America. 2022 Feb 22;119(8)