gene-for-gene concept

gene-for-gene concept

the theory that genes for PATHOGEN resistance in a host plant are matched by corresponding virulence genes in the attacking pathogen.
References in periodicals archive ?
By means of gene postulation and pedigree analysis, the resistant genes to stripe rust in eighty-two wheat cultivars from the Gansu province in China were identified in 30 wheat genotypes with the known Yr gene and 26 Pst pathotypes at the seedling stage under controlled greenhouse conditions in the Institute of Plant Protection, Chinese Academy of Agricultural Sciences (IPP CAAS), based on the gene-for-gene concept. The adult plant resistance of the 82 cultivars were tested at two locations in Longnan region of Gansu province during the growing seasons of 2009-2010, 2010-2011 and 2014-2015.
Gene postulation is based on Flor's gene-for-gene concept. It is necessary to develop a set of known gene cultivars as differential hosts suitable to China and to consider the pedigree of the test cultivars.
Current status of the gene-for-gene concept. Annual Review of Phytopathology., 1971; 9:275-296.
Based on the gene-for-gene concept, genes can be postulated from the correlation of the responses of selected resistance sources with those of controls.