Journal article

RECENT DEVELOPMENTS IN THE MOLECULAR-GENETICS AND BIOLOGY OF SELF-INCOMPATIBILITY

AE CLARKE, MA ANDERSON, A ATKINSON, A BACIC, PR EBERT, W JAHNEN, WM LUSH, SL MAU, JR WOODWARD

PLANT MOLECULAR BIOLOGY | KLUWER ACADEMIC PUBL | Published : 1989

Abstract

A summary of recent work on molecular aspects of self-incompatibility in Nicotiana alata is presented. The amino acid sequences of style proteins corresponding to different S-alleles of N. alata have a high level of homology in some regions and are variable in other regions. The regions of homology include N-terminal sequences as well as most of the glycosylation sites and cysteine residues. The glycosyl substituents may consist of a number of 'glycoforms'. The isolated style S-glycoproteins inhibit in vitro growth of pollen tubes. The S-glycoproteins tested inhibited the growth of pollen of several S-genotypes, and there was some specificity in the interaction. Heat treatment of the isolate..

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