Citrate exudation induced by aluminum is independent of plasma membrane H+-ATPase activity and coupled with potassium efflux from cluster roots of phosphorus-deficient white lupin

doi:10.1007/s11104-012-1445-7

	Citrate exudation induced by aluminum is independent of plasma membrane H+-ATPase activity and coupled with potassium efflux from cluster roots of phosphorus-deficient white lupin
	Zeng, Houqing 1; Feng, Xumeng ; Wang, Baolan 2; Zhu, Yiyong ; Shen, Qirong ; Xu, Guohua
	2013
发表期刊	PLANT AND SOIL
ISSN	0032-079X
卷号	366 期号:1-2 页码:389-400
摘要	Exudation of organic acid anions is one of the mechanisms responsible for aluminum (Al) tolerance. The plasma membrane (PM) H+-ATPase is involved in the exudation of organic acid anions. However, the relationship between organic acid exudation and PM H+-ATPase under Al toxicity remains unclear. This study aims to investigate the correlation among Al-induced citrate exudation, PM H+-ATPase activity and counterions for citrate release from cluster roots of phosphorus-deficient (-P) white lupin. Al and various pharmacological agents were applied to incubate the cluster roots of P-deficient white lupin; the citrate exudation rate, PM H+-ATPase activity and ion exudation of cluster roots were examined. Citrate exudation from cluster roots of P-deficient white lupin was induced by 50 mu M Al treatment within 1.5 h, but no extra increase was found when the duration of Al treatment increased. The PM H+-ATPase activity of cluster roots was insensitive to Al treatment, irrespective of Al concentration and duration of Al treatment. Al treatment increased K+ efflux but not H+ efflux from cluster roots. After application of pharmacological agents to P-deficient cluster roots under Al treatment or not, vanadate decreased H+ efflux and increased K+ efflux, but had no inhibitory effect on citrate exudation; fusicoccin increased H+ efflux and citrate exudation, but decreased K+ efflux; tetraethylammonium (TEA) chloride, a K+-channel inhibitor, inhibited K+ efflux and increased H+ efflux. These results indicate that citrate exudation induced by combined treatment with P-deficiency and Al is independent of PM H+-ATPase activity, and is coupled with K+ efflux, which may compensate H+ efflux for keeping the charge balance for Al-induced citrate exudation from cluster roots of P-deficient white lupin.
关键词	Al tolerance Citrate exudation Plasma membrane H+-ATPase K+ efflux Cluster root White lupin (Lupinus albus)
学科领域	Agronomy ; Plant Sciences ; Soil Science
DOI	10.1007/s11104-012-1445-7
收录类别	SCI
语种	英语
WOS关键词	VIGNA-UMBELLATA ; PROTEOID ROOTS ; ION-TRANSPORT ; CITRIC-ACID ; RICE ROOTS ; LOW PH ; RESISTANCE ; TOLERANCE ; AL ; SECRETION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000317988600028
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-5036
资助机构	Program of New Century Excellent Talent in Universities ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作者邮箱	Xu, Guohua/J-1840-2012 ; Zeng, Houqing/D-7141-2012 ; Shen, Qirong/AAB-6531-2020
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28018
专题	植被与环境变化国家重点实验室
作者单位	1.Nanjing Agr Univ, Key Lab Plant Nutr & Fertilizat Low Middle Reache, Coll Resource & Environm Sci, Minist Agr, Nanjing 210095, Jiangsu, Peoples R China 2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China 3.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Houqing,Feng, Xumeng,Wang, Baolan,et al. Citrate exudation induced by aluminum is independent of plasma membrane H+-ATPase activity and coupled with potassium efflux from cluster roots of phosphorus-deficient white lupin[J]. PLANT AND SOIL,2013,366(1-2):389-400.
APA	Zeng, Houqing,Feng, Xumeng,Wang, Baolan,Zhu, Yiyong,Shen, Qirong,&Xu, Guohua.(2013).Citrate exudation induced by aluminum is independent of plasma membrane H+-ATPase activity and coupled with potassium efflux from cluster roots of phosphorus-deficient white lupin.PLANT AND SOIL,366(1-2),389-400.
MLA	Zeng, Houqing,et al."Citrate exudation induced by aluminum is independent of plasma membrane H+-ATPase activity and coupled with potassium efflux from cluster roots of phosphorus-deficient white lupin".PLANT AND SOIL 366.1-2(2013):389-400.

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