The Jatropha curcas KASIII gene alters fatty acid composition of seeds in Arabidopsis thaliana

文献类型： 外文期刊

第一作者： Yu, N.

作者： Yu, N.;Chen, X. Y.;Peng, C. C.;Yu, N.;Xiao, W. F.;Zhu, J.;Chen, X. Y.;Peng, C. C.;Yu, N.;Xiao, W. F.;Zhu, J.;Chen, X. Y.;Peng, C. C.;Xiao, W. F.

作者机构：

关键词： fatty acid synthase;mutants;transgenic plants

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

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年卷期：

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收录情况： SCI

摘要： Jatropha curcas L. is a perennial, drought-resistant, and non-food oilseed crop. The fatty acid composition of seed oil, especially the ratio of 16- to 18-carbon fatty acids, has a direct impact on the biodiesel quality. In plants, fatty acid chain lengths are mainly determined by the plastidial fatty acid synthase complex which includes three beta-ketoacyl-acyl carrier protein synthases (KASs), KASI, KASII, and KASIII. The KASIII is thought to play a rate-limiting role in fatty acid synthesis. Here, we report the functional characterization of a putative JcKASIII gene from Jatropha curcas using Arabidopsis thaliana L. as model system. The transcripts of JcKASIII were detected in all tissues examined and increased in seeds. Overexpression of JcKASIII in Arabidopsis led to an increased content of palmitic acid and a higher ratio of 16- to 18-carbon fatty acids. Moreover, functional analysis of JcAKSIII in kasI or kasII knock down Arabidopsis mutants revealed that the composition of seed oil changed. Taken together, these results suggest that heterologous JcKASIII could function as one of the major regulators of fatty acid composition.

分类号： Q94

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