Abscisic Acid and transpiration in leaves in relation to osmotic root stress

Y Mizrahi, A Blumenfeld, A E Richmond

Research output: Contribution to journalArticlepeer-review


The adaptive response of plants to a decrease in osmotic
potential of the root medium involves adjustments that facilitate the maintenance of their water balance. Thus Bernstein (2, 3) showed that turgor pressure may be maintained under salinization through a decrease in the osmotic potential of the whole plant. However, actual turgor may also be maintained by a decrease in transpirational water loss. Indeed, the turgor of salinized cotton plants was even higher than the controls according to Gale et al. (4), who reported that, despite the high turgor, the stomata of the salinized plants were only partially open and transpiration was considerably reduced. They observed lower transpiration rates both in cotton and bean plants which had
undergone complete osmotic adjustment and in onion plants which exhibited only partial osmotic adjustment. They concluded that salinity affected
Original languageEnglish GB
Pages (from-to)169-71
Number of pages3
JournalPlant Physiology
Issue number1
StatePublished - Jul 1970
Externally publishedYes


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