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OsMADS26 Negatively Regulates Resistance to Pathogens and Drought Tolerance in Rice
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OsMADS26 Negatively Regulates Resistance to Pathogens and Drought Tolerance in Rice
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Journal Article
OsMADS26 Negatively Regulates Resistance to Pathogens and Drought Tolerance in Rice
2015
Overview
Functional analyses of MADS-box transcription factors in plants have unraveled their role in major developmental programs (e.g. flowering and floral organ identity) as well as stress-related developmental processes, such as abscission, fruit ripening, and senescence. Overexpression of the rice (Oryza sativa)MADS26gene in rice has revealed a possible function related to stress response. Here, we show thatOsMADS26-down-regulated plants exhibit enhanced resistance against two major rice pathogens:Magnaporthe oryzaeandXanthomonas oryzae. Despite this enhanced resistance to biotic stresses,OsMADS26-down-regulated plants also displayed enhanced tolerance to water deficit. These phenotypes were observed in both controlled and field conditions. Interestingly, alteration ofOsMADS26expression does not have a strong impact on plant development. Gene expression profiling revealed that a majority of genes misregulated in overexpresser and down-regulatedOsMADS26lines compared with control plants are associated to biotic or abiotic stress response. Altogether, our data indicate thatOsMADS26acts as an upstream regulator of stress-associated genes and thereby, a hub to modulate the response to various stresses in the rice plant.
Publisher
American Society of Plant Biologists,Oxford University Press ; American Society of Plant Biologists
Subject
Adaptation, Physiological - genetics
/ Biology
/ Disease Resistance - genetics
/ Drought
/ Droughts
/ Gene Expression Profiling - methods
/ Gene Expression Regulation, Plant
/ Genes
/ MADS Domain Proteins - genetics
/ Mutation
/ Oligonucleotide Array Sequence Analysis
/ Phytopathology and phytopharmacy
/ Plant Diseases - microbiology
/ Plants
/ Plants, Genetically Modified
/ Reverse Transcriptase Polymerase Chain Reaction
/ Rice
