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题名: Phytochrome interacting factors (PIFs) are essential regulators for sucrose-induced hypocotyl elongation in Arabidopsis
作者: Liu, ZJ; Zhang, YQ; Liu, RZ; Hao, HL; Wang, Z; Bi, YR(毕玉蓉)
收录类别: SCIE ; PubMed ; MEDLINE ; BIOSIS
出版日期: 2011-10-15
刊名: JOURNAL OF PLANT PHYSIOLOGY
卷号: 168, 期号:15, 页码:1771-1779
出版者: ELSEVIER
出版地: JENA
英文摘要: Phytochrome interacting factors (PIFs) are members of a subfamily of basic helix-loop-helix transcript factors and have been proposed to act as positive regulators of hypocotyl elongation under normal condition. Here, we show that PIF1, 3,4, 5 together play a central role in sucrose-induced hypocotyl elongation. When seedlings grown in light were transferred to darkness, exogenously applied sucrose significantly induced hypocotyl elongation in wild type Col-0, but this effect was impaired in all tested Of mutants, especially in the quadruple mutant pif1pif3pif4pif5 (pifq). Subsequent experiments showed that under various light/dark (L/D) cycle conditions sucrose still markedly induced hypocotyl elongation in Col-0, but exhibited little effects in pifq. Phytohormone gibberellins (GAs) have been proven to be required for sucrose-induced hypocotyl elongation, but application of GA(3) (an active form of GAs) was not able to rescue the impairment observed in pifq, suggesting that impairment of sucrose-induced hypocotyl elongation in pifq is not due to the reduced endogenous GAs. Interestingly, through RT-PCR assay, we found that sucrose up-regulated the transcript level of PIF1, 3, 4, 5 in darkness. Furthermore, this effect was dependent on the presence of GAs. Additionally, under continuous light condition, sucrose markedly inhibited the hypocotyl elongation in Col-0 but not in pifq, whereas exogenous GA(3) could recover the repression in Col-0 but only showed slight effect in pifq. These results collectively indicate that PIFs together with GAs control the effect of sucrose on hypocotyl elongation in Arabidopsis seedlings. (C) 2011 Elsevier GmbH. All rights reserved.
关键词: Arabidopsis ; Gibberellins ; Hypocotyl elongation ; PIFs ; Sucrose
作者部门: [Liu, Zhongjuan ; Zhang, Yongqiang ; Liu, Rongzhi ; Hao, Hualing ; Wang, Zhi ; Bi, Yurong] Lanzhou Univ, Sch Life Sci, Minist Educ, Key Lab Arid & Grassland Agroecol, Lanzhou 730000, Gansu, Peoples R China
通讯作者: Bi, YR (reprint author), Lanzhou Univ, Sch Life Sci, Minist Educ, Key Lab Arid & Grassland Agroecol, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Plant Sciences
文章类型: Article
所属项目编号: Specialized Research Fund for the Doctoral Program of Higher Education of China [20100211110009] ; Major Project of Cultivating New Varieties of Transgenic Organisms [2009ZX08009-029B] ; National High Technology Research and Development Program (863 Program) [2007AA021401] ; National Natural Science Foundation of China [90917019]
所属项目名称: 国家自然科学基金项目 ; 国家高技术研究发展计划(863计划) ; 国家科技重大专项 ; 高等学校博士学科点专项科研基金 ; 转基因生物新品种培育科技重大专项
项目资助者: NSFC ; MOST ; MOE ; MOA
语种: 英语
DOI: 10.1016/j.jplph.2011.04.009
ISSN号: 0176-1617
WOS记录号: WOS:000295703100008
PM记录号: 21684034
BIOSIS记录号: BIOSIS:PREV201100691184
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/115085
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Liu, ZJ,Zhang, YQ,Liu, RZ,et al. Phytochrome interacting factors (PIFs) are essential regulators for sucrose-induced hypocotyl elongation in Arabidopsis[J]. JOURNAL OF PLANT PHYSIOLOGY,2011,168(15):1771-1779.
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