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题名: Nitric oxide mediates alginate oligosaccharides-induced root development in wheat (Triticum aestivum L.)
作者: Zhang, Yunhong1;  Liu, Hang1;  Yin, Heng1;  Wang, Wenxia1;  Zhao, Xiaoming1;  Du, Yuguang1
关键词: Alginate oligosaccharides ;  Triticum aestivum L. ;  Root development ;  Nitric oxide
刊名: PLANT PHYSIOLOGY AND BIOCHEMISTRY
发表日期: 2013-10-01
DOI: 10.1016/j.plaphy.2013.06.023
卷: 71, 页:49-56
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
英文摘要: 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-1) were found to induce the generation of nitric oxide (NO) in the root system of wheat (Triticum aestivum L.), which promoted the formation and elongation of wheat roots in a dose-dependent manner. NO inhibitors suggested that nitrate reductase (NR), rather than nitric oxide synthase (NOS), was essential for AOS-induced root development. Further studies confirmed that AOS-induced NO generation in wheat roots by up-regulating the gene expression and enzyme activity of NR at the post-transcriptional level. The anatomy and RT-PCR results showed that AOS accelerated the division and growth of stele cells, leading to an increase in the ratio of stele area to root transverse area. This could be inhibited by the NR inhibitor, sodium tungstate, which indicated that NO catalyzed by the NR was involved in AOS regulation of root development. Taken together, in the early stage of AOS-induced root development, NO generation was a novel mechanism by which AOS regulated plant growth. The results also showed that this marine resource could be widely used for crop development. (C) 2013 Elsevier Masson SAS. All rights reserved.
关键词[WOS]: ARABIDOPSIS NITRATE REDUCTASE ;  GROWTH-PROMOTING ACTIVITY ;  HINGE 1 REGION ;  IN-VITRO ;  AUXIN TRANSPORT ;  ACTIVATION ;  ACCUMULATION ;  INHIBITION ;  RHIZOBIUM ;  RESPONSES
语种: 英语
WOS记录号: WOS:000325836600006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137506
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Liaoning Prov Key Lab Carbohydrates, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Zhang, Yunhong,Liu, Hang,Yin, Heng,et al. Nitric oxide mediates alginate oligosaccharides-induced root development in wheat (Triticum aestivum L.)[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2013,71:49-56.
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