RRC ID 48700
Author Sekimoto H.
Title Sexual reproduction and sex determination in green algae.
Journal J Plant Res
Abstract The sexual reproductive processes of some representative freshwater green algae are reviewed. Chlamydomonas reinhardtii is a unicellular volvocine alga having two mating types: mating type plus (mt+) and mating type minus (mt-), which are controlled by a single, complex mating-type locus. Sexual adhesion between the gametes is mediated by sex-specific agglutinin molecules on their flagellar membranes. Cell fusion is initiated by an adhesive interaction between the mt+ and mt- mating structures, followed by localized membrane fusion. The loci of sex-limited genes and the conformation of sex-determining regions have been rearranged during the evolution of volvocine algae; however, the essential function of the sex-determining genes of the isogamous unicellular Chlamydomonas reinhardtii is conserved in the multicellular oogamous Volvox carteri. The sexual reproduction of the unicellular charophycean alga, Closterium peracerosum-strigosum-littorale complex, is also focused on here. The sexual reproductive processes of heterothallic strains are controlled by two multifunctional sex pheromones, PR-IP and PR-IP Inducer, which independently promote multiple steps in conjugation at the appropriate times through different induction mechanisms. The molecules involved in sexual reproduction and sex determination have also been characterized.
Volume 130(3)
Pages 423-431
Published 2017-5
DOI 10.1007/s10265-017-0908-6
PII 10.1007/s10265-017-0908-6
PMID 28188480
MeSH Biological Evolution Cell Adhesion / physiology Cell Fusion Chlamydomonas reinhardtii / genetics Chlamydomonas reinhardtii / growth & development Chlorophyta / genetics* Chlorophyta / growth & development Chlorophyta / physiology* Closterium / genetics Closterium / growth & development Fresh Water Life Cycle Stages / genetics Life Cycle Stages / physiology Membrane Fusion / physiology Reproduction / genetics* Reproduction / physiology* Sex Determination Processes / genetics* Sex Determination Processes / physiology* Volvox / genetics Volvox / growth & development
IF 2.082
Times Cited 10
Algae NIES-67 NIES-68