期刊
ANNUAL REVIEW OF GENETICS, VOL 55
卷 55, 期 -, 页码 427-452出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-genet-112618-043553
关键词
sexual reproduction; gamete; small RNAs; stem cell; differentiation; cell signaling
资金
- Friedrich Ebert Foundation
- University of Hamburg
The mechanism of meiotic entry control in plants is fundamentally different from yeast and animals, and further studies are needed to understand the diversity of this process in flowering plants.
One of the major cell fate transitions in eukaryotes is entry into meiosis. While in single-celled yeast this decision is triggered by nutrient starvation, in multicellular eukaryotes, such as plants, it is under developmental control. In contrast to animals, plants have only a short germline and instruct cells to become meiocytes in reproductive organs late in development. This situation argues for a fundamentally different mechanism of how plants recruit meiocytes, and consistently, none of the regulators known to control meiotic entry in yeast and animals are present in plants. In recent years, several factors involved in meiotic entry have been identified, especially in the model plant Arabidopsis, and pieces of a regulatory network of germline control in plants are emerging. However, the corresponding studies also show that the mechanisms of meiotic entry control are diversified in flowering plants, calling for further analyses in different plant species.
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