OsSPL is involved in the regulation of the initiation of female and male mother cell reduction division in rice.

Sexual reproduction is the most important form of reproduction of organisms and plays a very important role in maintaining the genetic and variation of species. The most important link of
sexual reproduction is the process of acquiring a subtractive division fate from a fission cell, that is, the initiation of a subtractive division.
there is a lack of understanding of the molecular mechanisms of plant reduction and division compared to yeast and animals.
, Cheng Zhuguang of the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences took rice as a model plant, screened infertile mutants that lacked the reduction of division process, and cloned the relevant mutant genes, and found that OsSPL was involved in the regulation of the initiation of female and male mother cell division in rice.
OsSPL has a conservative SPL domain, which has a loss of protein function caused by the loss or mutation of conservative amino acids.
Osspl mutant flower medicine can not observe the accumulation of pollen mother cell isomorphic, and the spore cell nucleus chromosome morphology and the assembly of silk granuleS CENH3 are maintained in a filament state, can specifically indicate the expression of the mel1 gene formed by the pollen mother cell only maintained at the cell-forming level, indicating that OssPL mutation makes spore cells unable to differentiate into normal pollen mother cells.
studies have for the first time proved that SPL homologous protein also has a conservative function in single-leaf plants, which provides an important basis for further elucidating the molecular mechanism of the initiation regulation of desorrated division in quilt plants. The paper was published online February 26,
in the journal New Phytologist.
Cheng Zhuguang Research Group Ph.D. ph.D. Ren Lijun and senior engineer Tang Ding are co-authors of the article, and researcher Cheng Zhuguang and assistant researcher Li Yafei are co-authors of the article.
research work is supported by the Ministry of Science and Technology, the National Natural Science Foundation of China, etc.
.