Advances in research of mechanism of self-incompatibility in fruit trees of subfamily Prunoideae
Most fruit trees in the Rosaceae family are characterized by self-incompatibility,a regulatory mechanism that prevents inbreeding through specific recognition of pistils and pollen.Self-incompatibility helps to maintain genetic diversity in fruit tree populations and is an important trait in studying the genet-ics and evolution of fruit tree populations.The fruit trees of Prunoideae are an important branch of the fruit trees of the family Rosaceae,containing species such as peach(Prunus persica),plum(P.salicina),apricot(P.armeniaca),lentil(P.dulcis),fruit plum(P.mume)and Chinese cherry(P.pseudocerasus).Fruit trees of Plumiaceae are taxonomically classified as S-RNase-mediated gametophytic self-incompatibility,with the S locus comprising at least the S-RNase specifically expressed on the style side and the F-box gene de-scribed explicitly on the pollen side.This paper reviewed the discovery of S-determinants,the molecular recognition mechanism of pollen and style,and the progress of self-compatible mutants in Plumiaceae,with a view to elucidating the molecular mechanism of pollination in prunus and providing a theoretical ba-sis for the molecular breeding of Plumiaceae.
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