TY - JOUR
AU - Takayama, Seiji
AB - Self-incompatibility in flowering plants prevents inbreeding and promotes outcrossing to generate genetic diversity. In Solanaceae, a multiallelic gene, S-locus F-box (SLF), was previously shown to encode the pollen determinant in self-incompatibility. It was postulated that an SLF allelic product specifically detoxifies its non-self S-ribonucleases (S-RNases), allelic products of the pistil determinant, inside pollen tubes via the ubiquitin-26S-proteasome system, thereby allowing compatible pollinations. However, it remained puzzling how SLF, with much lower allelic sequence diversity than S-RNase, might have the capacity to recognize a large repertoire of non-self S-RNases. We used in vivo functional assays and protein interaction assays to show that in Petunia, at least three types of divergent SLF proteins function as the pollen determinant, each recognizing a subset of non-self S-RNases. Our findings reveal a collaborative non-self recognition system in plants.
TI - Collaborative non-self recognition system in S-RNase-based self-incompatibility.
JF - Science (New York, N.Y.)
DO - 10.1126/science.1195243
DA - 2010-12-06
UR - https://www.deepdyve.com/lp/pubmed/collaborative-non-self-recognition-system-in-s-rnase-based-self-tdxaAC22vL
SP - 796
EP - 9
VL - 330
IS - 6005
DP - DeepDyve
ER -