Gene Details:

• MSU gene ID: LOC_Os12g10540
• RAPdb gene ID: Os12g0207000
• Gene Symbol: OsMADS13
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Furthermore, making carpels inside carpels, the OsMADS13 flower is indeterminate, showing that OsMADS13 also has a function in floral meristem determinacy.
• Here, we report the interactions of rice (Oryza sativa) floral homeotic genes, OsMADS3 (a C-class gene), OsMADS13 (a D-class gene), and DROOPING LEAF (DL), in specifying floral organ identities and floral meristem determinacy.
• OsMADS13-3 osmads3-4 displayed a loss of floral meristem determinacy and generated abundant carpelloid structures containing severe defective ovules in the flower center, which were not detectable in the single mutant.
• This indicates that OsMADS3 plays a synergistic role with OsMADS13 in both ovule development and floral meristem termination.
• These observations suggest that DL and OsMADS13 may function in the same pathway specifying the identity of carpel/ovule and floral meristem.
• Genetic interaction of OsMADS3, DROOPING LEAF, and OsMADS13 in specifying rice floral organ identities and meristem determinacy.
• Furthermore, the defects of OsMADS13-3 dl-sup6 flowers appeared identical to those of dl-sup6, and the OsMADS13 expression was undetectable in dl-sup6 flowers.
• Collectively, we propose a model to illustrate the role of OsMADS3, DL, and OsMADS13 in the specification of flower organ identity and meristem determinacy in rice.
• Our results suggest that OsMADS13 is the ortholog of ZAG2 and ZMM1 and might play a role in rice ovule and seed development.
• We show that the OsMADS13 mutant is female sterile and that ovules are converted into carpelloid structures.
• Expression studies and preliminary analyses of two upregulated Zinc-finger transcription factor encoding genes indicate that our dataset represents a valuable resource for the identification of both OsMADS13 target genes and novel players in rice ovule development.
• Transcriptome analysis reveals rice OsMADS13 as an important repressor of the carpel development pathway in ovules.
• Taken together, our study suggests that OsMADS13 is an important repressor of the carpel pathway during ovule development.
• In rice, the AG subfamily gene OsMADS13 is intimately involved in the determination of ovule identity, since knock-out mutant plants develop carpel-like structures in place of ovules resulting in female sterility.

Function-related keywords:

• floral ,  leaf ,  flower ,  seed-development ,  meristem ,  seed ,  floral-meristem ,  sterile ,  transcription-factor ,  development ,  sterility ,  male-sterility ,  ovule ,  ovule-identity

Literature:

• OsMADS13, a novel rice MADS-box gene expressed during ovule development .  DOI:  10.1002/(SICI)1520-6408(1999)25:3<237::AID-DVG6>3.0.CO;2-L ;  PMID:  10528264
• MADS-box gene family in rice: genome-wide identification, organization and expression profiling during reproductive development and stress .  DOI:  10.1186/1471-2164-8-242 ;  PMID:  17640358
• Genetic interaction of OsMADS3, DROOPING LEAF, and OsMADS13 in specifying rice floral organ identities and meristem determinacy .  DOI:  10.1104/pp.111.172080 ;  PMID:  21444646
• Functional analysis of all AGAMOUS subfamily members in rice reveals their roles in reproductive organ identity determination and meristem determinacy .  DOI:  10.1105/tpc.111.087007 ;  PMID:  21810995
• The D-lineage MADS-box gene OsMADS13 controls ovule identity in rice .  DOI:  10.1111/j.1365-313X.2007.03272.x ;  PMID:  17877710
• Rice MADS6 interacts with the floral homeotic genes SUPERWOMAN1, MADS3, MADS58, MADS13, and DROOPING LEAF in specifying floral organ identities and meristem fate .  DOI:  10.1105/tpc.111.087262 ;  PMID:  21784949
• Transcriptome analysis reveals rice MADS13 as an important repressor of the carpel development pathway in ovules .  DOI:  10.1093/jxb/eraa460 ;  PMID:  33035313
• Rice transcription factor MADS32 regulates floral patterning through interactions with multiple floral homeotic genes .  DOI:  10.1093/jxb/eraa588 ;  PMID:  33337484
• Conserved Imprinted Genes between Intra-Subspecies and Inter-Subspecies Are Involved in Energy Metabolism and Seed Development in Rice .  DOI:  10.3390/ijms21249618 ;  PMID:  33348666
• Characterization of a new rice OsMADS1 null mutant generated by homologous recombination-mediated gene targeting .  DOI:  10.1007/s00425-020-03547-3 ;  PMID:  33474591

Related News:

Gene Resources:

• NCBI ID: AF151693  , AK070425
• UniProt accessions:

Sequences: