Idioma:

Fluxes of atmospheric hydrogen sulphide to plant shoots

Kok, L.J. de (University of Groningen, Haren, The Netherlands) ; Stahl, K ; Rennenberg, H

The New phytologist, 1989-08, Vol.112 (4), p.533-542 [Revista revisada por pares]

Oxford, UK: Cambridge University Press

Texto completo disponible

Citas Citado por

Acciones

Título:
Fluxes of atmospheric hydrogen sulphide to plant shoots
Autor: Kok, L.J. de (University of Groningen, Haren, The Netherlands) ; Stahl, K ; Rennenberg, H
Materias: Air flow ; AIR POLLUTION ; Animal, plant and microbial ecology ; Applied ecology ; Atmospherics ; Biological and medical sciences ; CONTAMINACION DEL AIRE ; Corn ; CUCURBITA PEPO ; Ecotoxicology, biological effects of pollution ; Effects of pollution and side effects of pesticides on plants and fungi ; FITOTOXICIDAD ; FUMIGACION ; FUMIGATION ; Fundamental and applied biological sciences. Psychology ; H2S flux ; H2S fumigation ; Hydrogen ; HYDROGEN SULPHIDE ; hydrogen sulphide deposition ; METABOLISM ; METABOLISME ; METABOLISMO ; PHYTOTOXICITE ; PHYTOTOXICITY ; PICEA ABIES ; Plant growth ; Plants ; POLLUTION ATMOSPHERIQUE ; Spinach ; SPINACIA OLERACEA ; STEMS ; Sulfur ; SULFURE D'HYDROGENE ; SULFURO DE HIDROGENO ; sulphydryl ; TALLO ; TIGE ; TRANSLOCACION ; TRANSLOCATION ; TRANSPIRACION ; TRANSPIRATION ; Water vapor ; ZEA MAYS
Es parte de: The New phytologist, 1989-08, Vol.112 (4), p.533-542
Notas: F60
H50
T01
9011956
Permanent address and towhom correspondence should be addressed: Department of Plant Physiology, University of Groningen, P.O. Box 14,9750 AA Haren, The Netherlands.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descripción: Short-term exposure of maize, pumpkin, spinach and spruce to various atmospheric H2S concentrations resulted in high H2S fluxes to the shoots. In all species an almost linear relation was observed between flux and H2S concentration up to around 0.3 μl l-1. At higher H2S concentrations the flux reached a maximum, which was about 0.08, 0.04, 0.1 and 0.03 μmol g f. wt-1h-1for maize, pumpkin, spinach and spruce, respectively. The transpiration rate was not affected during H2S exposure. Up to a level of 0.3 μl l-1, the shoot conductance for H2S influx of the various species varied between 61 and 92% of that predicted from shoot conductance for aqueous vapour efflux. There was no relation between the H2S flux to the shoots and the sensitivity of the species towards H2S. A 12 days' exposure of maize, pumpkin and spinach to 0.75 μl l-1H2S resulted in a reduction of shoot yield of 1, 36 and 69%, respectively. H2S flux to the shoots of pumpkin, spinach and spruce remained rather constant during exposure for three or four days to about 0.22 μl l-1H2S. Even at a concentration of about 0.8 μl l-1H2S, which reduced the growth of pumpkin and spinach, the fluxes remained nearly constant. Fluxes of H2S to the shoots did, however, vary diurnally, being high during the light and low during the dark period. The H2S flux to transpiration ratio was constant during both light and dark periods, indicating that uptake was predominantly via the stomata. Only part of the total flux of H2S to the shoots of pumpkin and spinach could be recovered in the water-soluble non-protein sulphydryl fraction of the shoots (maximum 34%). It is proposed that cysteine synthase is directly involved in the fixation and metabolism of atmospheric H2S by the plant.
Editor: Oxford, UK: Cambridge University Press
Idioma: Inglés

Enlaces

Volver a la lista de resultados

Anterior Resultado 6 Siguiente Ir a la siguiente página

Realización: Logos de Redes Sociales:

Fluxes of atmospheric hydrogen sulphide to plant shoots

Kok, L.J. de (University of Groningen, Haren, The Netherlands) ; Stahl, K ; Rennenberg, H

Oxford, UK: Cambridge University Press

Buscando en bases de datos remotas, por favor espere