【摘 要】
：
The palea and lemma are floral organ structures unique to grasses;these structures form the hull and directly affect grain size and quality.However,the molecular mechanisms controlling the development of the hull are not well understood.In this study,we c
【机 构】
：
State Key Laboratory of Rice Biology,China National Center for Rice Improvement,China National Rice
论文部分内容阅读
The palea and lemma are floral organ structures unique to grasses;these structures form the hull and directly affect grain size and quality.However,the molecular mechanisms controlling the development of the hull are not well understood.In this study,we characterized the rice(Oryza sativa)abnormal flower and grain1(afg1)mutant,a new allele of OsMADS6.Similar to previously characterized osmads6 alleles,in the afg1 floret,the palea lost its marginal region and acquired the lemma identity.However,in contrast to other osmads6 alleles,the afg1 mutant showed altered grain size and grain quality,with decreased total starch and amylose contents,and increased protein and soluble sugar contents.The analysis of transcriptional activity suggested that AFG1 is a transcriptional activator and may affect grain size by regulating the expression levels of several genes related to cell expansion and proliferation in the afg1 mutant.These results revealed that AFG1 plays an important role in determining palea identity and affecting grain yield and quality in rice.
其他文献
Limited benefit population of immune checkpoint inhibitors makes it urgent to screen predictive biomarkers for stratifying the patients.Herein,we have investigated peripheral CD4+T cell signatures in advanced non-small cell lung cancer(NSCLC)patients rece
Chimeric antigen receptor(CAR)T cell is a novel approach,which utilizes anti-tumor immunity for cancer treatment.As compared to the traditional cell-mediated immunity,CAR-T possesses the improved specificity of tumor antigens and in-dependent cytotoxicity
We aimed to assess the associations of large artery stenosis (LAS) and cerebral small vessel disease (CSVD) with the risk of ischemic stroke and to investigate their respective and combined contributions.In the prospective population-based Shunyi Study,1,
Mutations of the genes encoding aminoacyl-tRNA synthetases are highly associated with various central nervous system disorders.Recurrent mutations,including c.5A＞G,p.D2G;c.1367C＞T,p.S456L;c.1535G＞A,p.R512Q and c.1846_1847del,p.Y616Lfs*6 of RARS1 gene,whic
Lysine acetylation,one of the major types of post-translational modifications,plays critical roles in regulating gene expression and protein function.Histone deacetylases(HDACs)are responsible for removing acetyl groups from lysines of both histone and no
Viral diseases cause serious economic loss in farmed animals industry.However,the efficacy of remedies for viral infection in farmed animals is limited,and treatment strategies are generally lacking for aquatic animals.Interactions of commensal microbiota
Evolutionary developmental biology,or Evo-Devo for short,has become an established field that,broadly speaking,seeks to understand how changes in development drive major transitions and innovation in organismal evolution.It does so via in-tegrating the pr
Pursuing purely organic materials with high-efficiency near-infrared(NIR)emissions is fundamentally limited by the large non-radiative decay rates(knr)governed by the energy gap law.To date,reported endeavors to decelerate knr are mainly focused on reduci
The stability of Ikaros family zinc finger protein 1 (Ikaros),a critical hematopoietic transcription factor,can be regulated by cereblon (CRBN) ubiquitin ligase stimulated by immunomodulatory drugs in multiple myeloma.However,other stabilization mechanism
Genetic manipulation of mitochondrial DNA (mtDNA) could be harnessed for deciphering the gene function of mitochondria;it also acts as a promising approach for the therapeutic correction of pathogenic mutation in mtDNA.However,there is still a lack of dir