Photosynthetic activity of ripening tomato fruit

被引：62

作者：

Carrara, S ^{[1
]}

Pardossi, A

Soldatini, GF

Tognoni, F

Guidi, L

机构：

[1] Univ Pisa, Dipartimento Chim & Biotecnol Agr, Pisa, Italy

[2] Univ Pisa, Dipartimento Biol Piante Agr, Pisa, Italy

[3] Univ Milan, Dipartimento Prod Vegetale, Milan, Italy

来源：

PHOTOSYNTHETICA | 2001年 / 39卷 / 01期

关键词：

chlorophyll fluorescence; fruit photosynthesis; gas exchanges; Lycopersicon esculentum; phosphoenolpyruvate carboxylase; ribulose-1,5-bisphosphate carboxylase/oxygenase; transpiration;

D O I：

10.1023/A:1012495903093

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Gas exchanges, chlorophyll (Chl) a fluorescence and carboxylation activities of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) and phosphoenolpyruvate carboxylase (PEPC) were determined in tomato (Lycopersicon esculentum Mill.) fruits picked at different developmental stages (immature, red-turning, mature, and over-ripe). The fruits did not show signs Of CO2 fixation. However, photochemical activity was detectable and an effective electron transport was observed, the values of Chl fluorescence parameters in green fruits being similar to those determined in the leaves. The RuBPCO activity, which was similar to those recorded in the leaves at the immature stage of the fruit, decreased as the fruit ripened. PEPC activity was always higher than RuBPCO activity.

引用

页码：75 / 78

页数：4

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