OsbZIP49

• Symbol: OsbZIP49
• MSU: LOC_Os06g41100
• RAPdb: Os06g0614100

• Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice., 2021, Plant J.

Genbank accession number

• Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice.
• Taken together, the present results reveal the role transcription factor OsbZIP49 plays in determining plant architecture, primarily due to its influence on local auxin homeostasis
• Follow-up studies indicated that the effects of OsbZIP49 on tiller angles are mediated through changes in shoot gravitropic responses
• Knockout of OsbZIP49 led to reduced expression of both OsGH3-2 and OsGH3-13 within the shoot base, and increased accumulation of IAA and increased OsIAA20 expression levels were observed in transformants following gravistimulation
• In contrast, CRISPR/Cas9 mediated knockout of OsbZIP49 resulted in a compact architecture
• Increased GH3-catalysed conjugation of IAA in rice transformants overexpressing OsbZIP49 resulted in the increased accumulation of IAA-Asp and IAA-Glu, and a reduction in local free auxin, tryptamine and IAA-Glc levels
• Transgenic rice plants overexpressing OsbZIP49 displayed a tiller-spreading phenotype with reduced plant height and internode lengths

• OsbZIP49, OsGH3-2~OsGH3.2, Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice., Additionally, we provide evidence that OsbZIP49 activates the expression of indole-3-acetic acid-amido synthetases OsGH3-2 and OsGH3-13 by directly binding to TGACG motifs located within the promoters of both genes
• OsbZIP49, OsGH3-2~OsGH3.2, Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice., Knockout of OsbZIP49 led to reduced expression of both OsGH3-2 and OsGH3-13 within the shoot base, and increased accumulation of IAA and increased OsIAA20 expression levels were observed in transformants following gravistimulation
• OsbZIP49, OsGH3.13~TLD1~OsGH3-13, Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice, Knockout of OsbZIP49 led to reduced expression of both OsGH3-2 and OsGH3-13 within the shoot base, and increased accumulation of IAA and increased OsIAA20 expression levels were observed in transformants following gravistimulation.
• OsbZIP49, OsIAA20, Transcription Factor OsbZIP49 Controls Tiller Angle and Plant Architecture through the Induction of Indole-3-acetic Acid-amido Synthetases in Rice, Knockout of OsbZIP49 led to reduced expression of both OsGH3-2 and OsGH3-13 within the shoot base, and increased accumulation of IAA and increased OsIAA20 expression levels were observed in transformants following gravistimulation.