Highly divergent sequences of the pollen self-incompatibility (S) gene in class-I S haplotypes of Brassica campestris (syn. rapa) L.

Masao Watanabe, Akiko Ito, Yoshinobu Takada, Chie Ninomiya, Tomohiro Kakizaki, Yoshihito Takahata, Katsunori Hatakeyama, Kokichi Hinata, Go Suzuki, Takeshi Takasaki, Yoko Satta, Hiroshi Shiba, Seiji Takayama, Akira Isogai

Research output: Contribution to journalArticlepeer-review

94 Citations (Scopus)

Abstract

Self-incompatibility (SI) enables flowering plants to discriminate between self- and non-self-pollen. In Brassica, SI is controlled by the highly polymorphic S locus. The recently identified male determinant, termed SP11 or SCR, is thought to be the ligand of S receptor kinase, the female determinant. To examine functional and evolutionary properties of SP11, we cloned 14 alleles from class-I S haplotypes of Brassica campestris and carried out sequence analyses. The sequences of mature SP11 proteins are highly divergent, except for the presence of conserved cysteines. The phylogenetic trees suggest possible co-evolution of the genes encoding the male and female determinants. (C) 2000 Federation of European Biochemical Societies.

Original languageEnglish
Pages (from-to)139-144
Number of pages6
JournalFEBS Letters
Volume473
Issue number2
DOIs
Publication statusPublished - 2000 May 12
Externally publishedYes

Keywords

  • Brassica
  • Co-evolution
  • Phylogenetic analysis
  • SP11/SCR
  • SRK
  • Self- incompatibility

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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