Starch and soluble carbohydrates in leaves of water-stressed oak saplings

被引：46

作者：

Epron, D ^{[1
]}

Dreyer, E ^{[1
]}

机构：

[1] INRA, CTR NANCY, ECOPHYSIOL FORESTIERE, F-54280 CHAMPENOUX, FRANCE

来源：

ANNALES DES SCIENCES FORESTIERES | 1996年 / 53卷 / 2-3期

关键词：

oak; Quercus; soluble carbohydrate; starch; sucrose; water;

D O I：

10.1051/forest:19960209

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Four-year-old potted saplings of Quercus petraea (Matt) Liebl were exposed to water shortage by withholding irrigation. After 10 days, predawn leaf water potential was decreased to -2.0 MPa and leaf photosynthesis was reduced by 55%. At this stage, starch and sucrose concentrations were decreased by 47 and 48%, respectively. A five-fold increase was observed in glucose and fructose concentrations of water-stressed saplings compared with well-watered plants. These results suggested that drought-induced changes in sugar composition contribute to osmotic adjustment in this species.

引用

页码：263 / 268

页数：6

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