Mobile genetic elements in plant sex evolution |
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Authors: | G A Gerashchenkov N A Rozhnova |
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Institution: | 1.Institute of Biochemistry and Genetics, Ufa Research Center,Russian Academy of Sciences,Ufa,Russia |
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Abstract: | The most significant theories of the appearance and maintenance of sex are presented. However, in the overwhelming majority
of existing theories, the problem of sex, which is the central problem of evolutionary biology, is considered primarily through
the prism of reproductive features of living organisms, whereas the issue of molecular driving forces of sexual reproduction
is restricted to the possible role of mobile genetic elements (MGEs) in the appearance of sexual reproduction. The structural
and functional significance of MGEs in the genomic organization of plants is illustrated. It is shown that MGEs could act
as important molecular drivers of sex evolution in plants. The involvement of MGEs in the formation of sex chromosomes and
possible participation in seeds-without-sex reproduction (apomixis) is discussed. Thus, the hypothesis on the active MGE participation
in sex evolution is in good agreement with the modern views on pathways and directions of sex evolution in plants. |
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