Molecular Mechanisms of Self-incompatibility in Brassicaceae and Solanaceae

Overview

Journal Proc Jpn Acad Ser B Phys Biol Sci

Specialties Biology
Science

Date 2024 Apr 10

PMID 38599847

Authors

Kohji Murase

Seiji Takayama

Akira Isogai

Affiliations

Soon will be listed here.

Abstract

Self-incompatibility (SI) is a mechanism for preventing self-fertilization in flowering plants. SI is controlled by a single S-locus with multiple haplotypes (S-haplotypes). When the pistil and pollen share the same S-haplotype, the pollen is recognized as self and rejected by the pistil. This review introduces our research on Brassicaceae and Solanaceae SI systems to identify the S-determinants encoded at the S-locus and uncover the mechanisms of self/nonself-discrimination and pollen rejection. The recognition mechanisms of SI systems differ between these families. A self-recognition system is adopted by Brassicaceae, whereas a collaborative nonself-recognition system is used by Solanaceae. Work by our group and subsequent studies indicate that plants have evolved diverse SI systems.

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