Male Sterility and Fertility Restoration in Crops

作者: Letian Chen , Yao-Guang Liu

DOI: 10.1146/ANNUREV-ARPLANT-050213-040119

关键词: GeneticsBiotechnologyHeterosisNuclear geneBiologySterilityMitochondrial DNAHybrid seedCytoplasmic male sterilityFertilityEpigeneticsPlant scienceCell biologyPhysiologyMolecular biologyGeneral Medicine

摘要: In plants, male sterility can be caused either by mitochondrial genes with coupled nuclear or alone; the resulting conditions are known as cytoplasmic (CMS) and genic (GMS), respectively. CMS GMS facilitate hybrid seed production for many crops thus allow breeders to harness yield gains associated vigor (heterosis). CMS, layers of interaction between control its specificity, occurrence, restoration fertility. Environment-sensitive (EGMS) mutants may involve epigenetic noncoding RNAs revert fertility under different growth conditions, making them useful breeding materials in industry. Here, we review recent research on EGMS systems crops, summarize general models restoration, discuss evolutionary significance these reproductive systems.

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