Effects of different photorespiration inhibitors on photosynthetic characteristics and berry quality of Vitis amurensis Rupr.

文献类型： 外文期刊

第一作者： Liu, Liyuan

作者： Liu, Liyuan;Wang, Shan;Li, Hua;Wang, Zhenxing;Zhao, Xianhua;Nan, Lijun;Nan, Hailong

作者机构：

关键词： Grape;photorespiration inhibitor;photosynthetic characteristics;fluorescent characteristics;Vitis amurensis Rupr.

期刊名称：CANADIAN JOURNAL OF PLANT SCIENCE （ 影响因子：1.018； 五年影响因子：1.242 ）

ISSN： 0008-4220

年卷期： 2015 年 95 卷 2 期

页码：

收录情况： SCI

摘要： The effects of two photorespiration inhibitors on photosynthetic characteristics and berry quality of Vitis amurensis Rupr. were studied. The experiments used V. amurensis variety ` Shuang hong' as the experimental grape, NaHSO3 (sodium bisulfite) and isoniazide (INH) as the photorespiration inhibitors with three different spray concentrations, respectively. Results show that both photorespiration inhibitors improved the soluble solids (SS) contents and SS/total acid (TA) ratios (except the 350 mg L-1 INH treatment) in V. amurensis berries; two inhibitors can also improve the concentrations of glucose, sucrose, arabinose, lactose as well as monosaccharides (MS) and MS+disaccharides (DS) ontents, and at the same time decrease the TA contents in V. amurensis berries. Meanwhile, all NaHSO3 treatments had higher SS, SS/TA, glucose, and sucrose than treatments with the same concentrations of INH. However, the arabinose contents in all the INH treatments were higher than those in NaHSO3 treatments at the same concentrations. Compared with INH treatments, NaHSO3 were better at increasing net photosythesis rate (Pn), Rubisco carboxylation efficiency (CE), intercellular CO2 concentration (Ci) and decreasing photorespiration rate (Pr). However, the effects of NaHSO3 and INH on fluorescent characteristics of V. amurensis leaves were not significant. The fact that maximal values for photochemical efficiency of photosystem II complex (PSII) in the dark (F-v/F-m) in this study were large indicate that both NaHSO3 and INH had positive effects on chlorophyll fluorescence of V. amurensis leaves, which meant they had the ability to release surplus light energy and mitigate photoinhibition by inhibiting photorespiration at all three concentrations. Comprehensive analysis clearly indicates that NaHSO3 had better effects on photorespiration inhibition and fluorescent characteristics, and improved photosynthesis and the quality of V. amurensis grape berries, especially at 250 mg L-1.

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