| a genetic mechanism for emergence of races in fusarium oxysporum f. sp. lycopersici: inactivation of avirulence gene avr1 by transposon insertion. | compatible/incompatible interactions between the tomato wilt fungus fusarium oxysporum f. sp. lycopersici (fol) and tomato solanum lycopersicum are controlled by three avirulence genes (avr1-3) in fol and the corresponding resistance genes (i-i3) in tomato. the three known races (1, 2 and 3) of fol carry avr genes in different combinations. the current model to explain the proposed order of mutations in avr genes is: i) fol race 2 emerged from race 1 by losing the avr1 and thus avoiding host res ... | 2012 | 22952887 |