gamma-glutamyl transpeptidase 1 specifically suppresses green-light avoidance via GABA(A) receptors in Drosophila

	gamma-glutamyl transpeptidase 1 specifically suppresses green-light avoidance via GABA(A) receptors in Drosophila
	Liu, Jiangqu 1,2; Gong, Zhefeng 1; Liu, Li1,3
摘要	Drosophila larvae innately show light avoidance behavior. Compared with robust blue-light avoidance, larvae exhibit relatively weaker green-light responses. In our previous screening for genes involved in larval light avoidance, compared with control w(1118) larvae, larvae with gamma-glutamyl transpeptidase 1 (Ggt-1) knockdown or Ggt-1 mutation were found to exhibit higher percentage of green-light avoidance which was mediated by Rhodopsin6 (Rh6) photoreceptors. However, their responses to blue light did not change significantly. By adjusting the expression level of Ggt-1 in different tissues, we found that Ggt-1 in malpighian tubules was both necessary and sufficient for green-light avoidance. Our results showed that glutamate levels were lower in Ggt-1 null mutants compared with controls. Feeding Ggt-1 null mutants glutamate can normalize green-light avoidance, indicating that high glutamate concentrations suppressed larval green-light avoidance. However, rather than directly, glutamate affected green-light avoidance indirectly through GABA, the level of which was also lower in Ggt-1 mutants compared with controls. Mutants in glutamate decarboxylase 1, which encodes GABA synthase, and knockdown lines of the GABA(A) receptor, both exhibit elevated levels of green-light avoidance. Thus, our results elucidate the neurobiological mechanisms mediating green-light avoidance, which was inhibited in wild-type larvae.
关键词	Gaba Gaba(a) Receptor Ggt-1 Glutamate Green-light Avoidance
	2014-08-01
语种	英语
发表期刊	JOURNAL OF NEUROCHEMISTRY
ISSN	0022-3042
卷号	130 期号:3 页码:408-418
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000339479200008
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/13740
专题	中国科学院心理健康重点实验室
作者单位	1.Chinese Acad Sci, Inst Biophys, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Mental Hlth, Beijing 100101, Peoples R China
第一作者单位	脑与认知科学国家重点实验室
推荐引用方式 GB/T 7714	Liu, Jiangqu,Gong, Zhefeng,Liu, Li. gamma-glutamyl transpeptidase 1 specifically suppresses green-light avoidance via GABA(A) receptors in Drosophila[J]. JOURNAL OF NEUROCHEMISTRY,2014,130(3):408-418.
APA	Liu, Jiangqu,Gong, Zhefeng,&Liu, Li.(2014).gamma-glutamyl transpeptidase 1 specifically suppresses green-light avoidance via GABA(A) receptors in Drosophila.JOURNAL OF NEUROCHEMISTRY,130(3),408-418.
MLA	Liu, Jiangqu,et al."gamma-glutamyl transpeptidase 1 specifically suppresses green-light avoidance via GABA(A) receptors in Drosophila".JOURNAL OF NEUROCHEMISTRY 130.3(2014):408-418.

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