Differential aluminum resistance and organic acid anions secretion in triticale

doi:10.1080/00103620701548589

CORC > 中国农业科学院 > 作物科学研究所

	Differential aluminum resistance and organic acid anions secretion in triticale
	Liu, Qiang; He, Li Sheng; Wang, Zheng Yuan; Cheng, Xie Zheng; Zheng, Shao Jian
刊名	COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
	2007
卷号	38 期号:15-16 页码:1991-2004
关键词	aluminum resistance anion channel low temperature organic acid anions triticale
ISSN号	0010-3624
DOI	10.1080/00103620701548589
通讯作者	Liu, Qiang
英文摘要	Triticale (X Triticosecale Wittmack), a hybrid of wheat and rye, shows a high degree of aluminum (Al) tolerance, but variation in Al resistance between cultivars does exist. The mechanisms responsible for differential Al resistance in 10 triticale cultivars were investigated in this study. Triticale roots secreted both malate and citrate in response to Al stress. The amount of organic acid anions secreted was correlated positively to the relative root elongation (an index for Al resistance) and negatively to the Al content in root apices under Al stress, suggesting that the secretion of malate and citrate seems to be involved in the exclusion of Al from root tip. The Al-induced secretion of malate and citrate was characterized using an Al-resistant cultivar (ZC 237) and an M-sensitive cultivar (OH 1621). Root elongation was significantly inhibited in both ZC 237 and OH 1621 after 24 h of exposure to 30, 50, or 100 mu M Al but was more strongly in OH 1621 than in ZC 237 at all Al concentrations tested. A marked lag phase (3 h) between the addition of Al and the secretion of organic acid anions was observed in both triticale cultivars, and the secretion increased with increasing external Al concentration. The two anion-channel inhibitors, phenylglyoxal and niflumic acid, significantly inhibited the secretion of malate and citrate in ZC 237, with the degree of the inhibition of niflumic acid greater than that of phenylglyoxal. The Al-induced secretion of malate and citrate decreased to a very low level at low temperature (4 degrees C) in both cultivars. These results indicate that Al-induced malate and citrate secretion from roots play important roles in excluding Al and thereby detoxifying Al in trificale. The Al-induced organic acid anions were inhibited by anion-channel inhibitors and were dependent on temperature.
学科主题	Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science ; AGRONOMY ; CHEMISTRY, ANALYTICAL ; PLANT SCIENCES ; SOIL SCIENCE
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000250049200003
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5696]
专题	作物科学研究所
作者单位	(1)Zhejiang Univ, Coll Life Sci, State Key Lab Plant Physiol & Biochem, Hangzhou 310058, Peoples R China;(2)Zhejiang Univ, Coll Environm & Resources Sci, Hangzhou, Peoples R China;(3)Jinggangshan Univ, Coll Life Sci, Jian Jiangxi, Peoples R China;(4)Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qiang,He, Li Sheng,Wang, Zheng Yuan,et al. Differential aluminum resistance and organic acid anions secretion in triticale[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2007,38(15-16):1991-2004.
APA	Liu, Qiang,He, Li Sheng,Wang, Zheng Yuan,Cheng, Xie Zheng,&Zheng, Shao Jian.(2007).Differential aluminum resistance and organic acid anions secretion in triticale.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,38(15-16),1991-2004.
MLA	Liu, Qiang,et al."Differential aluminum resistance and organic acid anions secretion in triticale".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 38.15-16(2007):1991-2004.