STOMATAL RESPONSE TO DRYING SOIL IN RELATION TO CHANGES IN THE XYLEM SAP COMPOSITION OF HELIANTHUS-ANNUUS .2. STOMATAL SENSITIVITY TO ABSCISIC-ACID IMPORTED FROM THE XYLEM SAP

被引：157

作者：

SCHURR, U ^{[1
]}

GOLLAN, T ^{[1
]}

SCHULZE, ED ^{[1
]}

机构：

[1] UNIV BAYREUTH,LEHRSTUHL PFLANZENOKOL,W-8580 BAYREUTH,GERMANY

来源：

PLANT CELL AND ENVIRONMENT | 1992年 / 15卷 / 05期

关键词：

HELIANTHUS-ANNUUS L; COMPOSITAE; SUNFLOWER; ABSCISIC ACID; XYLEM SAP LEAF CONDUCTANCE; SENSITIVITY; NITRATE; CALCIUM; PH; ABSCISIC ACID IMPORT; ROOT-TO-SHOOT COMMUNICATION;

D O I：

10.1111/j.1365-3040.1992.tb01489.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Sunflower plants (Helianthus annuus L.) were subjected to soil drought. Leaf conductance declined with soil water content even when the shoot was kept turgid throughout the drying period. The concentration of abscisic acid in the xylem sap increased with decreasing soil water content. No general relation could be established between abscisic acid concentration in the xylem sap and leaf conductance due to marked differences in the sensitivity of leaf conductance of individual plants to abscisic acid from the xylem sap. The combination of these results with data from Gollan, Schurr & Schulze (1992, see pp. 551-559, this issue) reveals close connection of the effectiveness of abscisic acid as a root to shoot signal to the nutritional status of the plant.

引用

页码：561 / 567

页数：7

共 29 条

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