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Editorial: Meiosis in plants: sexual reproduction, genetic variation and crop improvement
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Editorial: Meiosis in plants: sexual reproduction, genetic variation and crop improvement
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Journal Article
Editorial: Meiosis in plants: sexual reproduction, genetic variation and crop improvement
2023
Overview
The phenotypic diversity that results from genetic variation is also used to develop new elite traits during commercial plant and animal breeding practices. [...]understanding the molecular mechanisms drive and regulate plant meiosis can accelerate crop improvement, and provide a theoretical foundation for the development and maintenance of new agricultural varieties. Molecular mechanism of meiotic recombination Our Research Focus includes two papers that advance our understanding of the mechanisms that govern double-strand-break (DSB) and crossover (CO) formation. Arabidopsis has a single copy of FIGL1 that acts as an anti-crossover factor that limits class II CO formation, likely by influencing DMC1-mediated single strand invasion (Fernandes et al., 2018).Yang et al.identified the rice homolog FIGNL1 and demonstrated that, in addition to limiting class II CO formation, FIGNL1 is also required for limiting non-homologous chromosome associations during meiotic DSB repair. [...]FIGNL1 interacts with MEICA1 (meiotic chromosome association 1), which has a domain of unknown function (DUF4487). [...]E. nutans individuals that are heterozygous for chromosomal rearrangements often have meiotic defects.Liu et al.performed sequential fluorescence in situ hybridization (FISH) and genomic in situ hybridization (GISH) to examine the intra- and inter-genome chromosomal variations in E. nutans heterozytous plants.
