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Author Tang D., Miao C., Li Y., Wang H., Liu X., Yu H., Cheng Z.
Title OsRAD51C is essential for double-strand break repair in rice meiosis.
Abstract:
RAD51C is one of the RAD51 paralogs that plays an important role in DNA double-strand break repair by homologous recombination. Here, we identified and characterized OsRAD51C, the rice homolog of human RAD51C. The OsRAD51C mutant plant is normal in vegetative growth but exhibits complete male and female sterility. Cytological investigation revealed that homologous pairing and synapsis were severely disrupted. Massive chromosome fragmentation occurred during metaphase I in OsRAD51C meiocytes, and was fully suppressed by the CRC1 mutation. Immunofluorescence analysis showed that OsRAD51C localized onto the chromosomes from leptotene to early pachytene during prophase I, and that normal loading of OsRAD51C was dependent on OsREC8, PAIR2, and PAIR3. Additionally, ZEP1 did not localize properly in OsRAD51C, indicating that OsRAD51C is required for synaptonemal complex assembly. Our study also provided evidence in support of a functional divergence in RAD51C among organisms.
Journal Front Plant Sci
Country China
Volume 5
Pages 167
Year 2014
PubMed ID 24847337
PubMed Central ID 4019848
DOI 10.3389/fpls.2014.00167
URL -
Relation
Gene PAIR2 PAIR3 RAD21-4 RAD51C ZEP1 _
INSD -
Strain Wild Core Collection -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase