DOES TRANSPIRATION HAVE AN ESSENTIAL FUNCTION IN LONG-DISTANCE ION-TRANSPORT IN PLANTS

被引：68

作者：

TANNER, W ^{[1
]}

BEEVERS, H ^{[1
]}

机构：

[1] UNIV CALIF SANTA CRUZ,DEPT BIOL,SANTA CRUZ,CA 95064

来源：

PLANT CELL AND ENVIRONMENT | 1990年 / 13卷 / 08期

关键词：

ZEA-MAYS; GRAMINEAE; TRANSPIRATION; ION CONTENT; TOP PART OF SHOOT;

D O I：

10.1111/j.1365-3040.1990.tb01089.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Long-term effects of transpiration on growth and on long-distance ion transport were investigated in maize over a whole growth cycle. Maize plants were grown with nutrients supplied at adequate levels in hydroculture or in soil at 50-60% and at > 95% relative humidity. Although the amount of water lost by the plants under these conditions differed by a factor 2 to 3, there was neither a decrease in growth (fresh weight and dry weight) nor in ash content of the 'humid' plants. This was also found when the upper part of the shoot (70-150 cm) was tested separately. It is suggested that transpiration is not essential for long-distance transport of mineral elements in plants. Alternatives are discussed.

引用

页码：745 / 750

页数：6

共 21 条

[1] THE ROLE OF LONG-DISTANCE TRANSPORT IN INTRACELLULAR PH REGULATION IN PHASEOLUS-VULGARIS GROWN WITH AMMONIUM OR NITRATE AS NITROGEN-SOURCE, OR NODULATED [J].