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首页> 外文期刊>Genetic Resources and Crop Evolution >Comparative differential expression of CURS genes and determination of curcumin content at different growth stages ofCurcuma longaL. and its wild relativeC. zanthorrhizaRoxb.
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Comparative differential expression of CURS genes and determination of curcumin content at different growth stages ofCurcuma longaL. and its wild relativeC. zanthorrhizaRoxb.

机译：Curcuma Longal不同生长阶段姜黄素基因的比较差异表达。 及其野生relativec。 Zanthorrhizaroxb。

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摘要

Curcuma zanthorrhizaRoxb. produces significant quantity of curcumin and essential oil in its rhizomes, hence can be used as an alternate source of curcumin. The differential expression of curcumin synthase (CURS) genes and subsequent curcumin production varied at the different developmental stages of the plant. The present study focused on the relative quantification of putative CURS (CURS1, CURS2 and CURS3) genes using qRT-PCR from the rhizomes ofC. zanthorrhizain comparison withC. longaL. and ultra fast liquid chromatography assisted curcumin quantification in both the species. The curcumin content in the rhizomes ofC. zanthorrhizawere 111.6 mu g/g, 352.6 mu g/g, 776.2 mu g/g and inC. longawere 72.5 mu g/g, 140.1 mu g/g and 1705.7 mu g/g at the 3rd, 6th and 9th month growth stages respectively. The relative expression of putative CURS1 was 2.39 +/- 0.03-6.54 +/- 0.06 fold, CURS2 was 1.74 +/- 0.01-3.24 +/- 0.18 fold and CURS3 was 1.61 +/- 0.23-3.48 +/- 0.13 fold inC. zanthorrhizaand 3.58 +/- 0.13-10.4 6 +/- 0.11 fold for CURS1, 1.51 +/- 0.06-4.92 +/- 0.10 fold for CURS2 and 1.80 +/- 0.03-7.01 +/- 0.14 fold for CURS3 inC. longa,during the 3rd-9th month with the highest relative expression in the six-month old rhizomes ofC. zanthorrhizaandC. longa.The CURS expression was positively correlated with the curcumin content in both the species during the 3rd and 6th month, however, during the 9th month the curcumin content increased and the putative CURS gene was down-regulated. The levels of expression of CURS genes are in the order with the highest expression for the CURS1, followed by CURS3 and CURS2. Thus, it can be suggested thatC. zanthorrhizacan be pertinently supersede as an alternate forC. longa.
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