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Article Abstract
The REproductive Meristem (REM) gene family encodes for transcription factors belonging to the B3 DNA binding domain superfamily. In , the gene family is composed of 45 members, preferentially expressed during flower, ovule, and seed developments. Only a few members of this family have been functionally characterized: () and, most recently, () regulate flowering time and (), together with () that control the death of the receptive synergid cell in the female gametophyte. We investigated the role of , , and , three closely related and linked genes similarly expressed in both female and male gametophytes. Simultaneous silencing by RNA interference (RNAi) caused about 50% of the ovules to remain unfertilized. Careful evaluation of both ovule and pollen developments showed that this partial sterility of the transgenic RNAi lines was due to a postmeiotic block in both female and male gametophytes. Furthermore, protein interaction assays revealed that REM34 and REM35 interact, which suggests that they work together during the first stages of gametogenesis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821719 | PMC |
| http://dx.doi.org/10.3389/fpls.2019.01351 | DOI Listing |
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