Molecular Biology Of S-Rnase-Based Self-Incompatibility

  • Y. Zhang
  • Y. Xue


Many Flowering Plants Have Developed Self-Incompatibility (Si) Systems To Avoid Inbreeding And To Promote Out-Crossing. Among The Various Si Systems, Gametophytic Si (Gsi) In The Solanaceae, Plantaginaceae And Rosaceae Is Believed To Be The Most Common Type, In Which The Specificity Of Si Response Is Controlled By A Single Polymorphic Locus, Termed The Self-Incompatibility S-Locus. It Has Been Shown That This Locus Is Organised In A Haplotype Fashion Carrying At Least Two Genes Determining The Self And Non-Self Pollen Recognition Specificity: S-Rnase (S-Ribonucleases) Expressed In Pistil (Pistil S) And Slf (S-Locus F-Box)/Sfb(Shaplotype- Specific F-Box) Genes In Pollen (Pollen S). In This Chapter, We Present And Discuss The Current Knowledge About Molecular Biology Of S-Rnase-Based Self-Incompatibility.


Pollen Tube Pollen Tube Growth Pollen Rejection Compatible Pollen Tube Primary Structural Feature 
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© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Y. Zhang
    • 1
  • Y. Xue
    • 1
  1. 1.Institute of Genetics and Developmental BiologyChinese Academy of Sciences and National Centre for Plant Gene ResearchChina

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