SAMN35978948
External Id
Guangdong Academy of Agricultural Sciences
INSDC center name
2023-07-06T00:00:00Z
INSDC first public
2023-07-12T05:18:21.537Z
INSDC last update
SRS18263340
INSDC secondary accession
live
INSDC status
Plant
NCBI submission model
Plant.1.0
NCBI submission package
SRS18263340
SRA accession
2023-01-30
collection_date
japonica
cultivar
Seed vigour, which determines germination and seedling growth, is an important agronomic trait. However, the regulation mechanism and molecular network of crop seed vigour are unclear, especially the mechanism of epigenetic regulation. Histone lysine demethylase (KDM) plays an important role in plant growth and development, seed germination and stress response, but little is known about their regulatory mechanisms. Here, we discussed the function of rice jmjC gene OsJMJ718 of JHDM2 family in rice seed germination and stress tolerance. OsJMJ718 is located in the cytoplasm and nucleus, and this enzyme is specialized in demethylation of H3K9 methylation. Histochemical GUS staining analysis showed that OsJMJ718 was highly expressed in seed embryos. Abiotic stress (including cold and NaCl) strongly induced OsJMJ718 transcriptional accumulation level. The OsJMJ718 mutant germinated slower than the wild type (WT). OsJMJ718-OE enhanced sensitivity to abscisic acid (ABA) during germination and in early seedling growth. The content of ABA in the OsJMJ718 mutant was higher than that in the WT seed. Transcriptome analysis showed that ABA signal transduction gene OsPP2C1 was differentially expressed in OsJMJ718-overexpressing plants, suggesting that OsJMJ718 may regulate rice seed germination by ABA signal transduction pathway. In conclusion, our findings suggest that OsJMJ718 may play an important role in regulating rice seed germination.
description
seed
dev_stage
China
geo_loc_name
Oryza sativa Japonica Group
http://purl.obolibrary.org/obo/NCBITaxon_39947
organism
seedling
tissue
OsJMJ718, a histone demethylase gene, positively regulates seed germination in rice
title