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We are studying the molecular basis and evolution of life-cycle transitions in the flagellated green soil alga, Chlamydomonas reinhardtii. We have cloned genes in the mating-type (MT) locus and genes regulated by MT that control the transitions between vegetative growth, gametic differentiation, and zygote development. These include genes responsible for gametic differentiation, mate recognition, and uniparental inheritance of chloroplast DNA, allowing us to study their function and their evolution during speciation. Of particular current interest are the homeoproteins Gsm1 and Gsp1 that heterodimerize upon gametic cell fusion, migrate to the nucleus, and activate the early diploid genetic program. These proteins share genetic ancestry with the Knox and Bell homeoprotein families that play key roles in determining cell fate in the land plants.
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Oxford University Press eBookspp.211-218, (2023)
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The Chlamydomonas Sourcebookpp.17-40, (2023)
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The Chlamydomonas Sourcebookpp.211-254, (2023)
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