Journal
MOLECULAR BREEDING
Volume 40, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/s11032-020-01170-4
Keywords
Rice; Pollen; Anther; OsGELP34; Male sterile
Categories
Funding
- National Natural Science Foundation of China [31901482, 31971863]
- Open Research Fund of State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Centre) [2016KF10]
- Sichuan Science and Technology Support Project [2016NZ0103, 2017NZDZX0001]
- National Key Research and Development Program of China [2017YFD0100201]
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Male reproductive development is vital for crop seed production. However, the mechanism underlying remains largely unknown. Here, we isolated a male sterile mutantosgelp34-1in rice. Cytological analysis indicated that the mutant exhibited delayed degradation of anther wall layers and abnormal pollen development, which resulted in the production of shrunk and non-viable pollen grains. MutMap and CRISPR/Cas9 analysis confirmed that a point mutation inOsGELP34is responsible for the male sterile phenotype.OsGELP34is highly expressed in reproductive tissues and encodes a putative GDSL lipase. OsGELP34 protein is located to the endoplasmic reticulum (ER) and conserved in land plants. Collectively, our findings elaborated thatOsGELP34plays a vital role in rice male reproduction and has potential applications in rice hybrid breeding.
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