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Overexpression of a Monocot Acyl‐CoA‐Binding Protein Confers Broad‐Spectrum Pathogen Protection in a Dicot
Author(s) -
Panthapulakkal Narayanan Saritha,
Liao Pan,
Taylor Paul W. J.,
Lo Clive,
Chye MeeLen
Publication year - 2019
Publication title -
proteomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.26
H-Index - 167
eISSN - 1615-9861
pISSN - 1615-9853
DOI - 10.1002/pmic.201800368
Subject(s) - arabidopsis , pseudomonas syringae , rhizoctonia solani , botrytis cinerea , jasmonate , biology , alternaria brassicicola , alternaria solani , plant defense against herbivory , microbiology and biotechnology , coronatine , genetically modified rice , biochemistry , pathogen , botany , transgene , mutant , genetically modified crops , gene , fungicide
Plants are continuously infected by various pathogens throughout their lifecycle. Previous studies have reported that the expression of Class III acyl‐CoA‐binding proteins (ACBPs) such as the Arabidopsis ACBP3 and rice ACBP5 were induced by pathogen infection. Transgenic Arabidopsis AtACBP3‐overexpressors (AtACBP3‐OEs) displayed enhanced protection against the bacterial biotroph, Pseudomonas syringae , although they became susceptible to the fungal necrotroph Botrytis cinerea . A Class III ACBP from a monocot, rice ( Oryza sativa ) OsACBP5 was overexpressed in the dicot Arabidopsis. The resultant transgenic Arabidopsis lines conferred resistance not only to the bacterial biotroph P. syringae but to fungal necrotrophs ( Rhizoctonia solani, B. cinerea , Alternaria brassicicola ) and a hemibiotroph ( Colletotrichum siamense ). Changes in protein expression in R. solani‐ infected Arabidopsis OsACBP5‐overexpressors (OsACBP5‐OEs) were demonstrated using proteomic analysis. Biotic stress‐related proteins including cell wall‐related proteins such as FASCILIN‐LIKE ARABINOGALACTAN‐PROTEIN10, LEUCINE‐RICH REPEAT EXTENSIN‐LIKE PROTEINS, XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE PROTEIN4, and PECTINESTERASE INHIBITOR18; proteins associated with glucosinolate degradation including GDSL‐LIKE LIPASE23, EPITHIOSPECIFIER MODIFIER1, MYROSINASE1, MYROSINASE2, and NITRILASE1; as well as a protein involved in jasmonate biosynthesis, ALLENE OXIDE CYCLASE2, were induced in OsACBP5‐OEs upon R. solani infection. These results indicated that upregulation of these proteins in OsACBP5‐OEs conferred protection against various plant pathogens.