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Temperature regulates fatty acid desaturases at a transcriptional level and modulates the fatty acid profile in the Antarctic microalga Chlamydomonas sp ICE-L

文献类型： 外文期刊

作者： An, Meiling 1 ; Mou, Shanli 2 ; Zhang, Xiaowen 2 ; Ye, Naihao 2 ; Zheng, Zhou 1 ; Cao, Shaona 2 ; Xu, Dong 2 ; Fan, Xiao; 1 ;

作者机构： 1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Bioact Subst, Qingdao, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China

关键词： Chlamydomonas sp ICE-L;FADs;PUFAs;Temperature stress

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2013 年 134 卷

页码：

收录情况： SCI

摘要： Chlamydomonas sp. ICE-L which can thrive in extreme environments of the Antarctic is a major biomass producer. The FAD genes in Chlamydomonas sp. ICE-L were obtained and sequence alignment showed that these genes are homologous to known FADs with conserved histidine motifs. In this study, we analyzed the transcription of five FADs and FA compositions at different temperatures. The results showed that the expressions of Delta 9CiFAD, omega 3CiFAD1 and omega 3CiFAD2 were apparently up-regulated at 0 degrees C, however, the up-regulation of Delta 6CiFAD intensified with rising temperature. Meanwhile, analysis of the FA compositions showed that PUFAs were dominant compositions, accounting for more than 75% TFA in Chlamydomonas sp. ICE-L Furthermore, PUFAs were significantly increased at 0 and 5 degrees C, which may be attributed to higher proportions of C18:3 and C20:3. Moreover, PUFAs were significantly decreased at 15 degrees C whereas SFAs were significantly increased. (C) 2013 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Expression of fatty acid desaturase genes and fatty acid accumulation in Chlamydomonas sp ICE-L under salt stress. An, Meiling,Zheng, Zhou,Miao, Jinlai,Mou, Shanli,Zhang, Xiaowen,Ye, Naihao,Wang, Dongsheng,Zhang, Wei. 2013

[2]Cloning and expression analysis of two different LhcSR genes involved in stress adaptation in an Antarctic microalga, Chlamydomonas sp ICE-L. Mou, Shanli,Liang, Qiang,Miao, Jinlai,Zheng, Zhou,Zhang, Xiaowen,Ye, Naihao,Xu, Dong,Dong, Meitao,Liang, Chengwei. 2012

[3]Analysis of Delta pH and the xanthophyll cycle in NPQ of the Antarctic sea ice alga Chlamydomonas sp ICE-L. Mou, Shanli,Zhang, Xiaowen,Ye, Naihao,Xu, Dong,Fan, Xiao,Miao, Jinlai,An, Meiling,Cao, Shaona. 2013

[4]Adaptation involved in nitrogen metabolism in sea ice alga Chlamydomonas sp ICE-L to Antarctic extreme environments. Wang, Dong S.,Wang, Yi T.,Wang, Wen Q.,Xu, Dong,Fan, Xiao,Ye, Nai H.,Zhang, Xiao W.,Mou, Shan L.,Guan, Zheng.

[5]Reference genes for gene expression normalization in Chlamydomonas sp ICE-L by quantitative real-time RT-PCR. Mou, Shanli,Zhang, Xiaowen,Xu, Dong,Ye, Naihao,Miao, Jinlai,Zheng, Zhou.

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