The promoting effects of alginate oligosaccharides on root development in Oryza sativa L. mediated by auxin signaling

被引：73

作者：

Zhang, Yunhong ^{[1
,2
]}

Yin, Heng ^{[2
]}

Zhao, Xiaoming ^{[2
]}

Wang, Wenxia ^{[2
]}

Du, Yuguang ^{[2
]}

He, Ailing ^{[1
]}

Sun, Kegang ^{[1
]}

机构：

[1] Henan Acad Agr Sci, Inst Plant Nutr Agr Resources & Environm Sci, Zhengzhou 450002, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2014年 / 113卷

关键词：

Alginate oligosaccharides; Oryza sativa L; Root development; Promoting effects; Auxin; Calcium signaling; WHEAT TRITICUM-AESTIVUM; VAR. UTILIS TSEN; NITRIC-OXIDE; PLASMA-MEMBRANE; RICE; ARABIDOPSIS; TRANSPORT; PROTEIN; CALCIUM; CELLS;

D O I：

10.1016/j.carbpol.2014.06.079

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Alginate oligosaccharides (AOS), which are marine oligosaccharides, are involved in regulating plant root growth, but the promotion mechanism for AOS remains unclear. Here, AOS (10-80 mg/L) induced the expression of auxin-related gene (OsYUCCA1, OsYUCCA5, OsIAA11 and OsPIN1) in rice (Oryza sativa L.) tissues to accelerate auxin biosynthesis and transport, and reduced indole-3-acetic acid (IAA) oxidase activity in rice roots. These changes resulted in the increase of 37.8% in IAA concentration in rice roots, thereby inducing the expression of root development-related genes, promoting root growth in a dose-dependent manner, which were inhibited by auxin transport inhibitor 2,3,5-triiodo benzoic acid (TIBA) and calcium-chelating agent ethylene glycol bis (2-aminoethyl) tetraacetic acid (EGTA). AOS also induced calcium signaling generation in rice roots. Those results indicated that auxin mediated AOS regulation of root development, and calcium signaling may act mainly in the upstream of auxin in the regulation of AOS on rice root development. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：446 / 454

页数：9

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