剛毛檉柳ThγGCS基因克隆及表達分析
[Abstract]:緯-glutamyl cysteine synthase (緯 GCS) is a rate-limiting enzyme for glutathione (GSH) biosynthesis in plant cells and plays an important role in many physiological processes in plants. A full-length c DNA sequence of Tamarix chinensis 緯 GCS gene was obtained from Tamarix chinensis transcriptome database and named Th 緯 GCS.. The full-length 2 121 bp, open reading frame encodes 511 amino acids for 1 536 bp,. The results of bioinformatics analysis showed that the deduced amino acid sequences of Th 緯 GCS were highly homologous to alfalfa, soybean and Hevea, respectively, and the evolutionary analysis showed that Th 緯 GCS was a dicotyledonous plant 緯 GCS subclass, which was divided into the same group as Hevea, mustard and other 緯 GCS. The phylogenetic relationship with monocotyledonous plants is far away. The protein has no transmembrane domain, but has a conserved GCS2 domain and is located in chloroplast, indicating that the Th 緯 GCS protein is stable and belongs to the glutamyl cysteine ligase family. In order to study the response of the gene to different abiotic stresses, the expression of Th 緯 GCS in different tissues at different time after NaCl and PEG stress was analyzed by real-time quantitative RT-PCR. The results showed that the expression of Th 緯 GCS was up-regulated by NaCl,PEG, which suggested that Th 緯 GCS might play an important role in the process of drought and salt tolerance of Tamarix chinensis.
【作者單位】: 東北林業(yè)大學(xué)林木遺傳育種國家重點實驗室;
【基金】:中央高;究蒲袠I(yè)務(wù)費專項資金項目(2572014CA12) 東北林業(yè)大學(xué)大學(xué)生創(chuàng)新訓(xùn)練項目(2015102251-81)共同資助
【分類號】:S793.5;Q943.2
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