Gamete formation without meiosis in Arabidopsis

Maruthachalam Ravi, Mohan P. A. Marimuthu and Imran Siddiqi ()
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Maruthachalam Ravi: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, India
Mohan P. A. Marimuthu: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, India
Imran Siddiqi: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, India

Nature, 2008, vol. 451, issue 7182, 1121-1124

Abstract: The opposite of sex Certain plant species produce seeds that are genetically identical by an asexual process called apomixis — a botanical equivalent to the parthenogenesis found in some animals. The first step in apomixis is 'apomeiosis', the formation of genetically identical female gametes. Now a study of the model sexual plant Arabidopsis shows that alteration of a single gene can bring about apomeiosis, resembling an early stage in the evolution of apomixis. This finding is important for understanding the basic mechanisms of plant reproduction and also has important implications for plant breeding because the development of crop plants capable of apomixis would be highly desirable for producing high-yielding hybrid seeds.

Date: 2008
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DOI: 10.1038/nature06557

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