FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection

Plants, as sessile organisms, are continuously threatened by multiple factors and therefore their profitable production depends on how they can defend themselves. We have previously reported on the characterization of fitness mutants which are more tolerant to environmental stresses due to the ac...

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Detalles Bibliográficos
Autores principales: Mengarelli, Diego Alberto, Tewes, Lara Roldán, Balazadeh, Salma, Zanor, María Inés
Formato: article artículo publishedVersion
Lenguaje:Inglés
Publicado: Frontiers Media 2021
Materias:
Pathogens
Arabidopsis
Salicylic Acid
NPR1
Acceso en línea:http://hdl.handle.net/2133/20485
http://hdl.handle.net/2133/20485
Aporte de:
Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR) de Universidad Nacional de Rosario
id I15-R121-2133-20485
record_format dspace
institution Universidad Nacional de Rosario
institution_str I-15
repository_str R-121
collection Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR)
language Inglés
orig_language_str_mv eng
topic Pathogens
Arabidopsis
Salicylic Acid
NPR1
spellingShingle Pathogens
Arabidopsis
Salicylic Acid
NPR1
Mengarelli, Diego Alberto
Tewes, Lara Roldán
Balazadeh, Salma
Zanor, María Inés
FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
topic_facet Pathogens
Arabidopsis
Salicylic Acid
NPR1
description Plants, as sessile organisms, are continuously threatened by multiple factors and therefore their profitable production depends on how they can defend themselves. We have previously reported on the characterization of fitness mutants which are more tolerant to environmental stresses due to the activation of defense mechanisms. Here, we demonstrate that in fitness mutants, which accumulate moderate levels of salicylic acid (SA) and have SA signaling activated, pathogen infection is restricted. Also, we demonstrate that NPR1 is essential in fitness mutants for SA storage and defense activation but not for SA synthesis after Pseudomonas syringae (Pst) infection. Additionally, these mutants do not appear to be metabolically impared, resulting in a higher seed set even after pathogen attack. The FITNESS transcriptional network includes defense-related transcription factors (TFs) such as ANAC072, ORA59, and ERF1 as well as jasmonic acid (JA) related genes including LIPOXYGENASE2 (LOX2), CORONATINE INSENSITIVE1 (COI1), JASMONATE ZIM-domain3 (JAZ3) and JAZ10. Induction of FITNESS expression leads to COI1 downregulation, and to JAZ3 and JAZ10 upregulation. As COI1 is an essential component of the bioactive JA perception apparatus and is required for most JA-signaling processes, elevated FITNESS expression leads to modulated JA-related responses. Taken together, FITNESS plays a crucial role during pathogen attack and allows a cost-efficient way to prevent undesirable developmental effects.
format article
artículo
publishedVersion
author Mengarelli, Diego Alberto
Tewes, Lara Roldán
Balazadeh, Salma
Zanor, María Inés
author_facet Mengarelli, Diego Alberto
Tewes, Lara Roldán
Balazadeh, Salma
Zanor, María Inés
author_sort Mengarelli, Diego Alberto
title FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
title_short FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
title_full FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
title_fullStr FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
title_full_unstemmed FITNESS acts as a negative regulator of immunity and influences the plant reproductive output after Pseudomonas syringae infection
title_sort fitness acts as a negative regulator of immunity and influences the plant reproductive output after pseudomonas syringae infection
publisher Frontiers Media
publishDate 2021
url http://hdl.handle.net/2133/20485
http://hdl.handle.net/2133/20485
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bdutipo_str Repositorios
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