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当前位置: 首页 > 文章 > 超表达PpSnRK1不同亚基对番茄叶绿素荧光参数及光合特性的影响 山东农业大学学报(自然科学版) 2019,50 (3) 361-366
Position: Home > Articles > Effects of Different Subunits of PpSnRK1 Overexpression on Chlorophy II Fluorescence Parameters and Photosynthetic Characteristics of Tomato Journal of Shandong Agricultural University(Natural Science Edition) 2019,50 (3) 361-366

超表达PpSnRK1不同亚基对番茄叶绿素荧光参数及光合特性的影响

作  者：
陈晓璐;张淑辉;王文茹;于雯;罗静静;彭福田
单  位：
山东农业大学园艺科学与工程学院
关键词：
SnRK1;番茄;叶绿素荧光参数;光合作用
摘  要：
以超表达PpSnRK1α番茄株系(T41、T43、T44)、PpSnRK1β1株系(T21、T23)、PpSnRK1β2株系(T91、T92)及野生型番茄(Solanum lycopersicum)为试材,研究SnRK1对番茄叶绿素荧光参数及光合特性的影响.结果表明,植物的潜在最大光能转换效率(Fv/Fm)比野生型高5.13%-7.70%;PSII的实际光化学量子效率(ΦPSI)比野生型高44.44%~94.44%.同时与野生型番茄相比,超表达PpSnRK1各亚基的番茄功能叶片的净光合速率均有不同程度的提高,其中PpSnRK1β2超表达株系比野生型WT提高38.76%和42.18%;CO2饱和点比野生型番茄均有不同程度的提高,比野生型高3.6%~30.73%.各转基因株系的胞间CO2浓度和气孔导度均高于野生型,并且随着中午气温的升高,野生型番茄胞间CO2浓度明显下降,而转基因株系没有显著的下降.因此,说明SnRK1对植物光合作用有重要的调控作用.
译  名：
Effects of Different Subunits of PpSnRK1 Overexpression on Chlorophy II Fluorescence Parameters and Photosynthetic Characteristics of Tomato
作  者：
CHEN Xiao-lu;ZHANG Shu-hui;WANG Wen-ru;YU Wen;LUO Jing-jing;PENG Fu-tian;College of Horticultural Science and Engineering/Shandong Agricultural University;
关键词：
SnRK1;;tomato;;chlorophyll fluorescence parameters;;photosynthesis
摘  要：
Effects of SnRK1 on chlorophyll fluorescence parameters and photosynthetic characteristics of tomato were studied by overexpressing PpSnRK1 tomato lines(T41, T43, T44), PpSnRK1 1 lines(T21, T23), PpSnRK1 2 lines(T91, T92)and wild type tomato(Solanum lycopersicum). Results showed that the potential maximum light energy conversion efficiency(Fv/Fm) of plants is 5.13%-7.70% higher than that of wild type. PSⅡ actual photochemical quantum efficiency(Φ PSⅡ) is44.44%-94.44% higher than that of wild type. The net photosynthetic rate of the functional leaves of tomato overexpression of PpSnRK1 subunits increased to some extent, the overexpression lines of PpSnRK1β2 were 38.76% and 42.18% higher than the wild-type WT. The CO_2 saturation point of tomato was increased by 3.6% to 30.73% higher than that of wild-type tomato.The intercellular CO_2 concentration and stomatal conductance of all transgenic lines were all higher than those of wild type.With the increase of noon temperature, the concentration of intercellular CO_2 of wild type tomato decreased significantly,while that of transgenic lines did not decrease significantly, this indicated that SnRK1 plays an important role in regulating plant photosynthesis.

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