Plant defense: ARR11 response regulator as a potential player in Arabidopsis
Plant growth and response to environmental cues are largely driven by hormones. Salicylic acid (SA)- and jasmonic acid (JA)-mediated defenses have been shown to be effective against different types of attackers. SA-mediated defense is mainly effective against biotrophic pathogens and phloem-feeding...
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Published in | Frontiers in plant science Vol. 13; p. 995178 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
21.09.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Plant growth and response to environmental cues are largely driven by hormones. Salicylic acid (SA)- and jasmonic acid (JA)-mediated defenses have been shown to be effective against different types of attackers. SA-mediated defense is mainly effective against biotrophic pathogens and phloem-feeding insects, whereas JA-mediated defense is effective against necrotrophic pathogens and tissue-damaging insects. Cytokinins (CKs) are classic growth hormones that have also emerged as plant immunity modulators. Evidence pointed out that CKs contribute to the defense responses mediated by SA and JA, acting as hormone modulators of the SA/JA signaling backbone. Recently, we identified in Arabidopsis a type-B response regulator 11 (ARR 11) involved in cytokinin-mediated responses as a novel regulator of the SA/JA cross-talk. Here we investigated plant fitness and resistance against the fungal necrotrophic pathogen
Botrytis cinerea
in Arabidopsis wild-type Col-8 and defective
arr11
mutant following SA, JA, CK single or combined treatment. Our results demonstrated that the CK and SA/JA/CK combination has a positive outcome on plant fitness in both Arabidopsis Col-8 and
arr11
mutant,. The triple hormone treatment is efficient in increasing resistance to
B. cinerea
in Col-8 and this effect is stronger in
arr11
mutant. The results will provide not only new background knowledge, corroborating the role of ARR11 in plant-defense related processes, but also new potential opportunities for alternative ways of protecting plants from fungal diseases. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 These authors share senior authorship Reviewed by: Jenn To, Bayer Crop Science, United States; Mario Serrano, Center for Genomic Sciences, National Autonomous University of Mexico, Mexico Edited by: Giulia Malacarne, Fondazione Edmund Mach, Italy These authors share first authorship This article was submitted to Plant Pathogen Interactions, a section of the journal Frontiers in Plant Science |
ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2022.995178 |