Metabolic changes of peanut (Arachis hypogaea L.) buds in response to low temperature (LT)

文献类型： 外文期刊

第一作者： Wang, X. J.

作者： Wang, X. J.;Sun, D. L.;Bian, N. F.;Zhang, Z. M.;Wang, X.;Xu, Z. J.;Qi, Y. J.;Shen, Y.

作者机构：

关键词： Peanut (Arachis hypogaea L.);Metabolic;Low temperature;Gas chromatography;Mass spectrometry

期刊名称：SOUTH AFRICAN JOURNAL OF BOTANY （ 影响因子：2.315； 五年影响因子：2.71 ）

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收录情况： SCI

摘要： In the present study, we report a metabolomics analysis on peanut buds to delineate metabolic changes at LT using gas chromatography time-of-flight mass spectrometry (GC-TOF/MS). Principle component analysis (PCA) determined overall metabolite alterations. It was found that more metabolites were up-regulated (78.1%) than down-regulated (21.9%). Enrichment of the KEGG pathway indicated that 18 metabolic pathways were significantly changed in peanut buds in response to LT. Compared with the metabolites of peanut buds before LT, there were 73 differentially expressed metabolites detected in peanut buds grown at 25 degrees C for 12 h, and those metabolites that were up-regulated (50.7%) were similar to those that were down-regulated (49.3%). There were 90 differentially expressed metabolites detected in peanut buds grown at 25 degrees C for 24 h, the types of up-regulated metabolite (60%) exceeded those that were decreased (40%). The result indicated that with peanut buds to restore growth, most of metabolites which accumulated in response to LT decreased quicldy. However, some metabolites (e.g., phytosphingosine, proline, putrescine, and turanose) remained elevated as compared to those before LT, which may contribute to cold tolerance of plants. Observations provide a basis for further elucidation of the molecular physiological mechanism in peanut buds in response to LT. (C) 2017 SAAB. Published by Elsevier B.V. All rights reserved.

分类号： Q94

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