The PalERF109 transcription factor positively regulates salt tolerance via PalHKT1;2 in Populus alba var. pyramidalis

被引：30

作者：

Chen, Ningning ^{[1
]}

Tong, Shaofei ^{[1
]}

Tang, Hu ^{[1
]}

Zhang, Zhiyang ^{[1
]}

Liu, Bao ^{[1
]}

Lou, Shangling ^{[1
]}

Liu, Jianquan ^{[1
,2
]}

Liu, Huanhuan ^{[1
]}

Ma, Tao ^{[1
]}

Jiang, Yuanzhong ^{[1
]}

机构：

[1] Sichuan Univ, Coll Life Sci, Key Lab Bioresources & Ecoenvironm, Minist Educ, Chengdu 610065, Peoples R China

[2] Lanzhou Univ, Coll Life Sci, Inst Innovat Ecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China

来源：

TREE PHYSIOLOGY | 2020年 / 40卷 / 06期

基金：

中国国家自然科学基金;

关键词：

HKT; PalERF109; Populus alba var; pyramidalis; salt stress; NA+/H+ ANTIPORTER SOS1; GENOME-WIDE ANALYSIS; SALINITY TOLERANCE; GENE FAMILY; ARABIDOPSIS; TRANSPORT; SODIUM; STRESS; NACL; COMPARTMENTATION;

D O I：

10.1093/treephys/tpaa018

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Salinity restricts the growth of trees to varying extents, but the regulatory mechanisms involved in their varying salt tolerance are largely unknown. In an effort to elucidate these mechanisms, we identified a total of 99 genes in the Ethylene Responsive Factor (ERF) family of transcription factors and examined their expression patterns under salt stress in Populus alba var. pyramidalis. We found that a B4 group gene, PalERF109, was rapidly induced by salt treatment and preferentially expressed in stems and petioles, where it is probably involved in transport of ions and water in xylem. Overexpression of PalERF109 enhanced the salt tolerance of the poplar, and further analysis showed that it directly upregulated a high-affinity K+ transporter (HKT) gene, PalHKT1;2. The results clearly indicate that PalERF109 enhances salt tolerance at least partially through direct activation of PalHKT1;2 and extends understanding of the roles of ERF genes in tree stress responses.

引用

页码：717 / 730

页数：14

共 62 条

[31] Genome-wide analysis of the ERF gene family in Arabidopsis and rice [J].