Abstract

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Author(s):: CHENG Peng1; JIANG Liang-yu2; JIN Li-mei2; WU Jun-jiang3; WANG Jin-sheng3; XU Peng-fei2; ZHANG Shu-zhen2; (1.Heilongjiang Agricultural Technology Extension Station,Harbin 150036,China;2.Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Ministry of Education,Harbin 150030,China;3.Soybean Research Institute of Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)

Abstract:: Pathogenesis-related(PR)proteins were originally discovered to accumulate in plants that were infected by pathogens,but were later found to accumulate in plants in response to a variety of biotic and abiotic stresses.PR proteins were the most crucial component of plant defense responses.Currently,PR proteins have been classified into 17 families on the basis of structural differences,serological relationships and biological activity.PR10 proteins are typically described as small,acidic,intracellular proteins of 15-19 kDa.Many PR10 proteins including CaPR10,LaPR10,SPE16,AhPR10,pea PR10.1,and maize ZmPR10 exhibit ribonuclease activity.The RNase activity of PR10 proteins suggests a potential role in defenses against pathogenic infections.Some studies showed PR10 proteins played important roles in plant defense system,having widespread applied prospect.The genetic structures of PR10s,expression patterns,ribonuclease activities,resistance mechanism and the application in transgenic plants were reviewed to provide a basis for disease resistant breeding.