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OsMYB103 is essential for tapetum degradation in rice

Theor Appl Genet. 2022-01; 
Ting Lei, Lisha Zhang, Ping Feng, Yang Liu, Wuzhong Yin, Lina Shang, Guanghua He, Nan Wang
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Proteins, Expression, Isolation and Analysis 0.5 mg TDR-GST protein was incubated with glutathione resin (L00206, GenScript, Piscataway, NJ, USA) at 4 °C overnight Get A Quote

摘要

OsMYB103 positively regulates tapetum degradation, and functions downstream of TDR and upstream of EAT1 and PTC1. The precise regulation of programmed cell death (PCD) of the tapetum is crucial for the development of anthers and pollen in rice. In this study, we isolated and identified a male-sterile mutant of rice, osmyb103, which exhibited delayed tapetum degradation and defective mature pollen. Map-based cloning and genetic complementation revealed that OsMYB103 corresponded to the gene LOC_Os04g39470 and encoded a R2R3 MYB transcription factor. OsMYB103 was localized in the nucleus and was expressed preferentially in the tapetal cells and microspores of the anther. OsMYB103 regulated the expression of two t... More

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