Gene Details:

• MSU gene ID: LOC_Os10g32980
• RAPdb gene ID: Os10g0467800
• Gene Symbol: OsCesA7
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• We show here that the genes responsible for three distinct brittle mutations of rice, induced by the insertion of the endogenous retrotransposon Tos17, correspond to CesA (cellulose synthase catalytic subunit) genes, OsCesA4, OsCesA7 and OsCesA9.
• A rice MYB transcription factor, OsMYB58/63, was found to directly upregulate the expression of a rice secondary wall-specific cellulose synthase gene, cellulose synthase A7 ( OsCesA7 ); in contrast, the Arabidopsis putative orthologs AtMYB58 and AtMYB63 have been shown to specifically activate lignin biosynthesis.
• The OsCesA7 gene is expressed predominantly in the culm at the mature stage, particularly in mechanical tissues such as vascular bundles and sclerenchyma cells, consistent with the brittle phenotype in the culm.
• A Missense Mutation in the Zinc Finger Domain of OsCesA7 Deleteriously Affects Cellulose Biosynthesis and Plant Growth in Rice.
• These results indicate that OsCesA7 plays an important role in cellulose biosynthesis and plant growth.
• Map-based gene cloning and a complementation assay showed that phenotypes of the S1-24 mutant were caused by a recessive point mutation in the OsCesA7 gene, which encodes cellulose synthase A subunit 7.

Function-related keywords:

• cellulose ,  transcription-factor ,  lignin ,  lignin-biosynthesis ,  vascular-bundle ,  growth ,  culm ,  zinc ,  plant-growth

Literature:

• Three distinct rice cellulose synthase catalytic subunit genes required for cellulose synthesis in the secondary wall .  DOI:  10.1104/pp.103.022442 ;  PMID:  12970476
• The expression of a rice secondary wall-specific cellulose synthase gene, OsCesA7, is directly regulated by a rice transcription factor, OsMYB58/63 .  DOI:  10.1007/s00425-015-2343-z ;  PMID:  26070439
• A Missense Mutation in the Zinc Finger Domain of OsCESA7 Deleteriously Affects Cellulose Biosynthesis and Plant Growth in Rice .  DOI:  10.1371/journal.pone.0153993 ;  PMID:  27092937
• Two Complementary Mechanisms Underpin Cell Wall Patterning during Xylem Vessel Development .  DOI:  10.1105/tpc.17.00309 ;  PMID:  28947492
• Gene Expression Dynamics in Rice Peduncles at the Heading Stage .  DOI:  10.3389/fgene.2020.584678 ;  PMID:  33343630
• The OsmiRNA166b-OsHox32 pair regulates mechanical strength of rice plants by modulating cell wall biosynthesis .  DOI:  10.1111/pbi.13565 ;  PMID:  33560572
• A Semi-Dominant Mutation in OsCESA9 Improves Salt Tolerance and Favors Field Straw Decay Traits by Altering Cell Wall Properties in Rice .  DOI:  10.1186/s12284-021-00457-0 ;  PMID:  33595759

Related News:

Gene Resources:

• NCBI ID: AK072259
• UniProt accessions:

Sequences: