Overexpression of OsMYB4P, an R2R3-type MYB transcriptional activator, increases phosphate acquisition in rice

Overexpression of OsMYB4P, an R2R3-type MYB transcriptional activator, increases phosphate acquisition in rice

Copyright © 2014 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 80(2014) vom: 08. Juli, Seite 259-67
1. Verfasser: Yang, Won Tae (VerfasserIn)
Weitere Verfasser: Baek, Dongwon, Yun, Dae-Jin, Hwang, Woon Ha, Park, Dong Soo, Nam, Min Hee, Chung, Eun Sook, Chung, Young Soo, Yi, Young Byung, Kim, Doh Hoon
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Phosphate acquisition Phosphate transporter Pi accumulation Pi response R2R3 MYB transcription factor Root system architecture Phosphates Plant Proteins Transcription Factors
Beschreibung
Zusammenfassung:Copyright © 2014 Elsevier Masson SAS. All rights reserved.
R2R3 MYB transcription factors play regulatory roles in plant responses to various environmental stresses and nutrient deficiency. In this study, we isolated and designated OsMYB4P, an R2R3 MYB transcription factor, from rice (Oryza sativa L. 'Dongjin') under phosphate-deficient conditions. OsMYB4P was localized in the nucleus and acted as a transcriptional activator. Transcriptional levels of OsMYB4P in cell suspension, shoots, and roots of rice increased under phosphate-deficient conditions. Shoots and roots of OsMYB4P-overexpressing plants grew well in high- and phosphate-deficient conditions. In addition, root system architecture was altered considerably as a result of OsMYB4P overexpression. Under both phosphate-sufficient and -deficient conditions, more Pi accumulated in shoots and roots of OsMYB4P-overexpressing plants than in the wild type. Overexpression of OsMYB4P led to greater expression of Pi transporter-family proteins OsPT1, OsPT2, OsPT4, OsPT7, and OsPT8 in shoots, and to decreased or unchanged expression of these proteins in roots, with the exception of OsPT8. These results demonstrate that OsMYB4P may be associated with efficient utilization of Pi in rice through transcriptional activation of Pi homeostasis-related genes
Beschreibung:Date Completed 15.01.2015
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1873-2690
DOI:10.1016/j.plaphy.2014.02.024