Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis

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	Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis
	Liu, Yangyang; Sun, Liangliang; Zhang, Ping; Wan, Jinpeng; Wang, Ruling; Xu, Jin; Xu, J (reprint author), Chinese Acad Sci, Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, Mengla, Peoples R China.
刊名	FRONTIERS IN PLANT SCIENCE
	2017
卷号	8 期号:x 页码:-
关键词	Lanthanum Auxin Accumulation Auxin Carriers Pinformed Protein Primary Root Growth
ISSN号	1664-462X
英文摘要	Lanthanum (La) is one of rare earth elements that was used as a crop growth stimulants; however, high concentration of La markedly inhibited plant growth. Our previous study indicated that, although La induced the expression of auxin biosynthesis-related genes, it markedly repressed primary root (PR) elongation by reducing auxin accumulation in PR tips. In this study, we exhibited that La reduces the abundances of auxin carriers. Treatment with La markedly inhibited the auxins IAA-, 2,4-D-, and NAA-induced elevation of DR5:GUS activity in the roots, suggesting that La inhibited auxin transport through both the influx and efflux transporters. Supplementation with auxin transport inhibitor naphthylphthalamic acid in La-treated seedlings did not further reduce PR growth compared with that of the La treatment alone, further confirmed that auxin transport is involved in La-induced inhibition of PR growth. Analysis of the protein abundances using the transgenic AUX1-YFP and PIN1/2/4/7-GFP marker lines indicated that La treatment reduced the abundances of all these auxin carriers in the PR tips. La also increased the stabilization of Aux/IAA protein AXR3. Taken together, these results indicated that La treatment inhibits PIN-mediated auxin transport and subsequently impairs auxin distribution and PR growth via reducing auxin carrier abundances.
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语种	英语
公开日期	2017-10-26
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/10674]
专题	西双版纳热带植物园_2012年后新成立研究组
通讯作者	Xu, J (reprint author), Chinese Acad Sci, Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, Mengla, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Yangyang,Sun, Liangliang,Zhang, Ping,et al. Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis[J]. FRONTIERS IN PLANT SCIENCE,2017,8(x):-.
APA	Liu, Yangyang.,Sun, Liangliang.,Zhang, Ping.,Wan, Jinpeng.,Wang, Ruling.,...&Xu, J .(2017).Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis.FRONTIERS IN PLANT SCIENCE,8(x),-.
MLA	Liu, Yangyang,et al."Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis".FRONTIERS IN PLANT SCIENCE 8.x(2017):-.