Isolation of NBS-LRR class resistant gene (I2 gene) from tomato cultivar Heamsona | Zendy

Pritesh Parmar | Zendy; B Subramanian R | Zendy

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Isolation of NBS-LRR class resistant gene (I2 gene) from tomato cultivar Heamsona

Author(s) -

Pritesh Parmar,

B Subramanian R

Publication year - 2013

Publication title -

african journal of biotechnology

Language(s) - English

Resource type - Journals

ISSN - 1684-5315

DOI - 10.5897/ajb2013.12194

Subject(s) - fusarium wilt , fusarium oxysporum , fusarium oxysporum f.sp. lycopersici , effector , gene , biology , pathogen , race (biology) , cultivar , r gene , plant disease resistance , microbiology and biotechnology , botany , genetics , immunology

Three races of Fusarium oxysporum f. sp. lycopersici race 1, 2 and 3 are identified depending on the avirulence protein or effector protein secreted by fungal pathogen during the host colonization in tomato. These effector proteins are recognized by the host innate immune system based on R gene expressions that are I1, I2 and I3 in tomato for each races. Amongst the three, I2 protein has been cloned and characterized for the incompatibility against race 2 type of the pathogens. In India race 1 type of F. oxysporum f. sp. lycopersici observed commonly which require presence of I1 gene in tomato plant for the incompatibility reactions but in the present study, I2 gene was partially isolated from the tomato cultivar Heamsona and observed to be resistance against race 1 type of pathogen. Keywords: Fusarium wilt, race, R-gene, resistance, tomato. African Journal of Biotechnology Vol. 12(42), pp. 6076-6078

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