title: S-RNase-mediated self-incompatibility.
abstract: The Solanaceae, Rosaceae, and Scrophulariaceae families all possess an RNase-mediated self-incompatibility mechanism through which their pistils can recognize and reject self-pollen to prevent inbreeding. The highly polymorphic S-locus controls the self-incompatibility interaction, and the S-locus of the Solanaceae has been shown to be a multi-gene complex in excess of 1.3 Mb. To date, the function of only one of the S-locus genes, the S-RNase gene, has been determined. This article reviews the current status of the search for the pollen S-gene and the current models for how S-haplotype specific inhibition of pollen tubes can be accomplished by S-RNases.
authors.affiliation: Intercollege Graduate Degree Program in Plant Physiology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Xi
authors.initials: X
authors.lastname: Wang
authors.forename: Andrea L
authors.initials: AL
authors.lastname: Skirpan
authors.forename: Teh-Hui
authors.initials: TH
authors.lastname: Kao
mesh_terms: D005298:Fertility / Q000235:genetics / Q000502:physiology; D035264:Flowers / Q000235:genetics / Q000502:physiology*; D023281:Genomics / Q000379:methods; D006023:Glycoproteins / Q000235:genetics / Q000378:metabolism; D009154:Mutation; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D011058:Pollen / Q000502:physiology; D012260:Ribonucleases / Q000378:metabolism*; D027824:Rosaceae / Q000201:enzymology / Q000235:genetics / Q000502:physiology; D028083:Scrophulariaceae / Q000201:enzymology / Q000235:genetics / Q000502:physiology; D019657:Solanaceae / Q000201:enzymology / Q000235:genetics / Q000502:physiology
chemical_list: D006023:Glycoproteins; D010940:Plant Proteins; C076697:self-incompatibility glycoprotein, Nicotiana; D012260:Ribonucleases; C022542:ribonuclease S