Premium
Interconnections between meiotic recombination and sequence polymorphism in plant genomes
Author(s) -
Ziolkowski Piotr A.,
Henderson Ian R.
Publication year - 2017
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/nph.14265
Subject(s) - meiosis , homologous recombination , ectopic recombination , genetics , biology , recombination , genetic recombination , chromosomal crossover , meiotic drive , chiasma , homologous chromosome , synaptonemal complex , chromosome , non allelic homologous recombination , synapsis , mitotic crossover , sexual reproduction , gene
Summary Meiosis is fundamental to sexual reproduction and creates genetic variation in progeny. During meiosis paired homologous chromosomes undergo recombination, which can result in reciprocal crossovers. This process can recombine independently arising mutations onto the same chromosome. Recombination locations are highly variable between meioses, although total crossover numbers are tightly regulated. In addition to the effect of meiosis on genetic variation, sequence polymorphisms between homologous chromosomes can feedback onto the recombination pathways. Here we review the major crossover pathways in plants and some of the known homeostatic mechanisms that act during meiotic recombination. We then examine how sequence polymorphisms between homologous chromosomes, that is, heterozygosity, can influence meiotic recombination pathways in cis and trans . Finally, we provide a brief perspective on the relevance of these interconnections for natural selection and adaptation in plants.ContentsSummary 1022 I. Introduction 1022 II. Initiation and resolution of meiotic recombination 1023 III. Interference between meiotic recombination locations 1023 IV. Feedback of genetic variation onto meiotic recombination 1025 V. Perspectives 1026Acknowledgements 1027References 1027