P1BS, a conserved motif involved in tolerance to phosphate starvation in soybean

被引：13

作者：

Li, L. H. ^{[1
]}

Guo, N. ^{[1
]}

Wu, Z. Y. ^{[1
]}

Zhao, J. M. ^{[1
]}

Sun, J. T. ^{[1
]}

Wang, X. T. ^{[1
]}

Xing, H. ^{[1
]}

机构：

[1] Nanjing Agr Univ, Natl Ctr Soybean Improvement, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing, Jiangsu, Peoples R China

来源：

GENETICS AND MOLECULAR RESEARCH | 2015年 / 14卷 / 03期

关键词：

Cis-regulatory motif; Soybean; GmPHR1; GmSPX1; Phosphate starvation; TRANSCRIPTION FACTOR; ARABIDOPSIS-THALIANA; INCREASED EXPRESSION; FREEZING TOLERANCE; ROOT DEVELOPMENT; HOMEOSTASIS; PLANTS; ACQUISITION; RESPONSES; SEQUENCE;

D O I：

10.4238/2015.August.14.2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Available phosphate (Pi) is a major limiting factor for plant growth, development, and productivity. Phosphate starvation response 1 (PHR1) is a binding dimer that binds to an imperfect palindromic sequence. PHR1-binding sequences (GnATATnC) exist in the promoter of Pi starvation-responsive structural genes, indicating an effect occurring downstream in the Pi starvation signaling pathway. These sequences are referred to as PHR1-binding site (P1BS) structures. In this study, the sequences of GmPHR1 and GmSPX1 from Glycine max (L.) Merr. soybean were determined and analyzed. We found that GmPHR1 is an MYB-related transcription factor. In addition, GmSPX1 contained a P1BS structure, which is an important cis-regulatory motif in the phosphate signaling pathway. We found that GmPHR1 can physically interact with GmSPX1 through the cis-element, which may be a major pathway for the GmPHR1-mediated Pi starvation stress response. Thus, the P1BS structure in the Pi starvation signaling pathway is an important cis-regulatory motif that improves the tolerance to low phosphorus conditions in soybean.

引用

页码：9384 / 9394

页数：11

共 36 条

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