Gene Details:

• MSU gene ID: LOC_Os06g43090
• RAPdb gene ID: Os06g0637500
• Gene Symbol: OsMYB102
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The rice transcription factor OsMYB102 delays leaf senescence by downregulating abscisic acid accumulation and signaling.
• Moreover, an OsMYB102 knockout mutant showed an accelerated senescence phenotype under dark-induced and ABA-induced leaf senescence conditions.
• Collectively, these results demonstrate that OsMYB102 plays a critical role in leaf senescence by downregulating ABA accumulation and ABA signaling responses.
• Here, we examined the rice MYB TF gene OsMYB102 and found that an OsMYB102 T-DNA activation-tagged line (termed OsMYB102-D), which constitutively expresses OsMYB102 under the control of four tandem repeats of the 35S promoter, and OsMYB102-overexpressing transgenic lines (35S:OsMYB102 and 35S:GFP-OsMYB102) maintain green leaves much longer than the wild type under natural, dark-induced, and abscisic acid (ABA)-induced senescence conditions.
• Further studies demonstrated that overexpression of OsMYB102 regulates the expression of SAGs, including genes associated with ABA degradation and ABA signaling (OsABF4, OsNAP, and OsCYP707A6), under dark-induced senescence conditions.
• OsMYB102 inhibits ABA accumulation by directly activating the transcription of OsCYP707A6, which encodes the ABA catabolic enzyme ABSCISIC ACID 8’-HYDROXYLASE.

Function-related keywords:

• leaf ,  leaf-senescence ,  transcription-factor ,  senescence ,  ABA ,  abscisic-acid

Literature:

• Rice transcription factor OsMYB102 delays leaf senescence by down-regulating abscisic acid accumulation and signaling .  DOI:  10.1093/jxb/erz095 ;  PMID:  30825376
• Transgenic expression of rice MYB102 (OsMYB102) delays leaf senescence and decreases abiotic stress tolerance in Arabidopsis thaliana .  DOI:  10.5483/BMBRep.2019.52.11.071 ;  PMID:  31072449

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: