Some Effects of Gas Concentrations on Metabolism of the Rhizome of Iris pseudacorus (L.)

Some Effects of Gas Concentrations on Metabolism of the Rhizome of Iris pseudacorus (L.) D. BOULTER, D . A. COULT and G. G. HENSHAW rtu" Hartley Bolanicnl Laboratories, L'niversily f)f I,.iverpooi. ICnglancI (Received December 1st, H V) Hi The submerged organs of aquatic and marsh plants are often expo.sed to almost if not (juite anaerobic conditions, and. furlberiiiore. Ibe rate of gaseous exchange between plant and water, as limited by diffusion aud gas sobibility. is smaller than tbe comparahle rate of exchange in air by a tact()r of lu-tweeu 10"* aud to •\ Thus, adaptaticjn to au atiuatic euvironmcnt may recpiire Ihat a species develops a ti>lerauie towards low oxygen and raised carbon dioxide levels. Conlinuily of tbe internal tissues witb tbe atmospbere via an airspace system may indeed make oxygen much more readily available iu inarsb plants (C'-onwiiy 1937) and may facilitate Ihe escape of carbon dioxide and ethaiu)! vapour hut whenever Ihe plant is wholly covered wilh water, it may have to face seriously adverse conditions. Moreover, whilst tbe provision of ade({uale air-spaces in Ihe tissues of submerged organs may belp physically to improve ventilation aud oxy(.feu storage, Williams and Harber (liHil) have suggested thai the main advantage of aereucbyuia is to give a miuinutm of protoplasm consistent with supplying http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiologia Plantarum Wiley

Some Effects of Gas Concentrations on Metabolism of the Rhizome of Iris pseudacorus (L.)

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Publisher
Wiley
Copyright
Copyright © 1963 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0031-9317
eISSN
1399-3054
DOI
10.1111/j.1399-3054.1963.tb08331.x
Publisher site
See Article on Publisher Site

Abstract

D. BOULTER, D . A. COULT and G. G. HENSHAW rtu" Hartley Bolanicnl Laboratories, L'niversily f)f I,.iverpooi. ICnglancI (Received December 1st, H V) Hi The submerged organs of aquatic and marsh plants are often expo.sed to almost if not (juite anaerobic conditions, and. furlberiiiore. Ibe rate of gaseous exchange between plant and water, as limited by diffusion aud gas sobibility. is smaller than tbe comparahle rate of exchange in air by a tact()r of lu-tweeu 10"* aud to •\ Thus, adaptaticjn to au atiuatic euvironmcnt may recpiire Ihat a species develops a ti>lerauie towards low oxygen and raised carbon dioxide levels. Conlinuily of tbe internal tissues witb tbe atmospbere via an airspace system may indeed make oxygen much more readily available iu inarsb plants (C'-onwiiy 1937) and may facilitate Ihe escape of carbon dioxide and ethaiu)! vapour hut whenever Ihe plant is wholly covered wilh water, it may have to face seriously adverse conditions. Moreover, whilst tbe provision of ade({uale air-spaces in Ihe tissues of submerged organs may belp physically to improve ventilation aud oxy(.feu storage, Williams and Harber (liHil) have suggested thai the main advantage of aereucbyuia is to give a miuinutm of protoplasm consistent with supplying

Journal

Physiologia PlantarumWiley

Published: Jul 1, 1963

References

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