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Gene-for-gene relationship : ウィキペディア英語版
Gene-for-gene relationship

The gene-for-gene relationship was discovered by the late Harold Henry Flor who was working with rust (''Melampsora lini'') of flax (''Linum usitatissimum''). Flor was the first scientist to study the genetics of both the host and parasite and to integrate them into one genetic system.〔Robinson, Raoul A. (1987) Host Management in Crop Pathosystems, Macmillan Publishing Company〕 Gene-for-gene relationships are a widespread and very important aspect of plant disease resistance.
Flor showed that the inheritance of both resistance in the host and parasite ability to cause disease is controlled by pairs of matching genes. One is a plant gene called the resistance (''R'') gene. The other is a parasite gene called the avirulence (''Avr'') gene. Plants producing a specific R gene product are resistant towards a pathogen that produces the corresponding ''Avr'' gene product.
Clayton Oscar Person was the first scientist to study plant pathosystem ratios rather than genetics ratios in host-parasite systems. In doing so, he discovered the differential interaction that is common to all gene-for-gene relationships and that is now known as the Person differential interaction.〔
==Resistance genes==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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