alexa bZIP transcription factor OsbZIP52 RISBZ5: a potential negative regulator of cold and drought stress response in rice.


Journal of Antivirals & Antiretrovirals

Author(s): Liu C, Wu Y, Wang X

Abstract Share this page

Abstract OsbZIP52/RISBZ5 is a member of the basic leucine zipper (bZIP) transcription factor (TF) family in rice (Oryza sativa) isolated from rice (Zhonghua11) panicles. Expression of the OsbZIP52 gene was strongly induced by low temperature (4°C) but not by drought, PEG, salt, or ABA. The subcellular localization of OsbZIP52-GFP in onion (Allium cepa) epidermis cells revealed that OsbZIP52 is a nuclear localized protein. A transactivation assay in yeast demonstrated that OsbZIP52 functions as a transcriptional activator and can specifically bind to the G-box promoter motif. In a yeast two-hybrid (Y-2-H) experiment, OsbZIP52 was able to form homodimeric complexes. Rice plants overexpressing OsbZIP52 showed significantly increased sensitivity to cold and drought stress. Real-time PCR analysis revealed that some abiotic stress-related genes, such as OsLEA3, OsTPP1, Rab25, gp1 precursor, β-gal, LOC_Os05g11910 and LOC_Os05g39250, were down-regulated in OsbZIP52 overexpression lines. These results suggest that OsbZIP52/RISBZ5 could function as a negative regulator in cold and drought stress environments. This article was published in Planta and referenced in Journal of Antivirals & Antiretrovirals

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version