Salinity is a prevailing factor for amelioration of wheat blast by biocontrol agents

Catalina Cabot; Rafael Bosch; Soledad Martos; Charlotte Poschenrieder; Analia Perelló

doi:10.1016/j.biocontrol.2018.07.003

Salinity is a prevailing factor for amelioration of wheat blast by biocontrol agents

Catalina Cabot, Rafael Bosch, Soledad Martos, Charlotte Poschenrieder, Analia Perelló

Department of Animal Biology, Plant Biology and Ecology

Research output: Contribution to journal › Article › Research

8 Citations (Scopus)

Abstract

© 2018 Elsevier Inc. Plants exposed to combined abiotic and biotic stress conditions may show enhanced pathogen resistance. Biocontrol agents (BCAs) can further contribute to ameliorate plant responses to these complex situations. In recent years, wheat production has been challenged by the expansion of salt-affected soils as well as by severe outbreaks of emerging diseases such as wheat blast. Here, the role of two BCAs, Pseudomonas stutzeri AN10 and Trichoderma harzianum Th56, was examined in salt-stressed seedlings infected with two Pyricularia oryzae isolates of contrasting aggressiveness. BCAs did not enhance plant tolerance to high salt stress. However, BCAs improved performance of salt-stressed wheat plants infected with the less aggressive Pyricularia isolate. The lower infection in salt-stressed BCAs-treated plants could be due to a salt-induced priming state required to trigger an early expression of plant defence genes.

Original language	English
Pages (from-to)	81-89
Journal	Biological Control
Volume	125
DOIs	https://doi.org/10.1016/j.biocontrol.2018.07.003
Publication status	Published - 1 Oct 2018

Keywords

Biocontrol
Defence gene expression
Pseudomonas stutzeri
Salinity
Trichoderma harzianum
Wheat blast

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10.1016/j.biocontrol.2018.07.003

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title = "Salinity is a prevailing factor for amelioration of wheat blast by biocontrol agents",

abstract = "{\textcopyright} 2018 Elsevier Inc. Plants exposed to combined abiotic and biotic stress conditions may show enhanced pathogen resistance. Biocontrol agents (BCAs) can further contribute to ameliorate plant responses to these complex situations. In recent years, wheat production has been challenged by the expansion of salt-affected soils as well as by severe outbreaks of emerging diseases such as wheat blast. Here, the role of two BCAs, Pseudomonas stutzeri AN10 and Trichoderma harzianum Th56, was examined in salt-stressed seedlings infected with two Pyricularia oryzae isolates of contrasting aggressiveness. BCAs did not enhance plant tolerance to high salt stress. However, BCAs improved performance of salt-stressed wheat plants infected with the less aggressive Pyricularia isolate. The lower infection in salt-stressed BCAs-treated plants could be due to a salt-induced priming state required to trigger an early expression of plant defence genes.",

keywords = "Biocontrol, Defence gene expression, Pseudomonas stutzeri, Salinity, Trichoderma harzianum, Wheat blast",

author = "Catalina Cabot and Rafael Bosch and Soledad Martos and Charlotte Poschenrieder and Analia Perell{\'o}",

year = "2018",

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doi = "10.1016/j.biocontrol.2018.07.003",

language = "English",

volume = "125",

pages = "81--89",

journal = "Biological Control",

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T1 - Salinity is a prevailing factor for amelioration of wheat blast by biocontrol agents

AU - Cabot, Catalina

AU - Bosch, Rafael

AU - Martos, Soledad

AU - Poschenrieder, Charlotte

AU - Perelló, Analia

PY - 2018/10/1

Y1 - 2018/10/1

N2 - © 2018 Elsevier Inc. Plants exposed to combined abiotic and biotic stress conditions may show enhanced pathogen resistance. Biocontrol agents (BCAs) can further contribute to ameliorate plant responses to these complex situations. In recent years, wheat production has been challenged by the expansion of salt-affected soils as well as by severe outbreaks of emerging diseases such as wheat blast. Here, the role of two BCAs, Pseudomonas stutzeri AN10 and Trichoderma harzianum Th56, was examined in salt-stressed seedlings infected with two Pyricularia oryzae isolates of contrasting aggressiveness. BCAs did not enhance plant tolerance to high salt stress. However, BCAs improved performance of salt-stressed wheat plants infected with the less aggressive Pyricularia isolate. The lower infection in salt-stressed BCAs-treated plants could be due to a salt-induced priming state required to trigger an early expression of plant defence genes.

AB - © 2018 Elsevier Inc. Plants exposed to combined abiotic and biotic stress conditions may show enhanced pathogen resistance. Biocontrol agents (BCAs) can further contribute to ameliorate plant responses to these complex situations. In recent years, wheat production has been challenged by the expansion of salt-affected soils as well as by severe outbreaks of emerging diseases such as wheat blast. Here, the role of two BCAs, Pseudomonas stutzeri AN10 and Trichoderma harzianum Th56, was examined in salt-stressed seedlings infected with two Pyricularia oryzae isolates of contrasting aggressiveness. BCAs did not enhance plant tolerance to high salt stress. However, BCAs improved performance of salt-stressed wheat plants infected with the less aggressive Pyricularia isolate. The lower infection in salt-stressed BCAs-treated plants could be due to a salt-induced priming state required to trigger an early expression of plant defence genes.

KW - Biocontrol

KW - Defence gene expression

KW - Pseudomonas stutzeri

KW - Salinity

KW - Trichoderma harzianum

KW - Wheat blast

U2 - 10.1016/j.biocontrol.2018.07.003

DO - 10.1016/j.biocontrol.2018.07.003

M3 - Article

SN - 1049-9644

VL - 125

SP - 81

EP - 89

JO - Biological Control

JF - Biological Control

ER -

Salinity is a prevailing factor for amelioration of wheat blast by biocontrol agents

Abstract

Keywords

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