Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms
Press, M. C. Graves, J. D. and Stewart, G. R. 1988. Transpiration and carbon acquistion in root hemiparastic angiosperms.—J. exp. Bot. 39: 1009–1014. Field measurements of carbon dioxide and water vapour exchange were made on eight species of root hemiparasite at sites in southern England, Scotland...
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1988
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fthighwire:oai:open-archive.highwire.org:jexbot:39/8/1009 2023-05-15T17:44:37+02:00 Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms PRESS, M. C. GRAVES, J. D. STEWART, G. R. 1988-08-01 00:00:00.0 text/html http://jxb.oxfordjournals.org/cgi/content/short/39/8/1009 https://doi.org/10.1093/jxb/39.8.1009 en eng Oxford University Press http://jxb.oxfordjournals.org/cgi/content/short/39/8/1009 http://dx.doi.org/10.1093/jxb/39.8.1009 Copyright (C) 1988, Society for Experimental Biology Review Article TEXT 1988 fthighwire https://doi.org/10.1093/jxb/39.8.1009 2007-06-24T03:12:21Z Press, M. C. Graves, J. D. and Stewart, G. R. 1988. Transpiration and carbon acquistion in root hemiparastic angiosperms.—J. exp. Bot. 39: 1009–1014. Field measurements of carbon dioxide and water vapour exchange were made on eight species of root hemiparasite at sites in southern England, Scotland and northern Sweden. Rates of light-saturated photosynthesis and night-time respiration were of the same order of magnitude, ranging from 2.10 to 7.53 and − 2.76 to − 7.82 μmol m−2 s−1 respectively. We suggest that autotrophic carbon must be supplemented by a heterotrophic, host-derived supply. Day- and night-time transpiration rates were very high, ranging from 6.12 to 9.22 and 2.58 to 8.69 mmol m−25−1 respectively. High transpiration rates, day and night, will facilitate movement of water, inorganic and organic solutes from host to parasite. Whereas in autotrophic plants stomata function to minimize water loss and maximize carbon gain, in hemiparasites the reverse is the case, whereby water loss is maximized in order to maximize carbon gain. Text Northern Sweden HighWire Press (Stanford University) Journal of Experimental Botany 39 8 1009 1014 |
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HighWire Press (Stanford University) |
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English |
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Review Article |
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Review Article PRESS, M. C. GRAVES, J. D. STEWART, G. R. Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
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Review Article |
description |
Press, M. C. Graves, J. D. and Stewart, G. R. 1988. Transpiration and carbon acquistion in root hemiparastic angiosperms.—J. exp. Bot. 39: 1009–1014. Field measurements of carbon dioxide and water vapour exchange were made on eight species of root hemiparasite at sites in southern England, Scotland and northern Sweden. Rates of light-saturated photosynthesis and night-time respiration were of the same order of magnitude, ranging from 2.10 to 7.53 and − 2.76 to − 7.82 μmol m−2 s−1 respectively. We suggest that autotrophic carbon must be supplemented by a heterotrophic, host-derived supply. Day- and night-time transpiration rates were very high, ranging from 6.12 to 9.22 and 2.58 to 8.69 mmol m−25−1 respectively. High transpiration rates, day and night, will facilitate movement of water, inorganic and organic solutes from host to parasite. Whereas in autotrophic plants stomata function to minimize water loss and maximize carbon gain, in hemiparasites the reverse is the case, whereby water loss is maximized in order to maximize carbon gain. |
format |
Text |
author |
PRESS, M. C. GRAVES, J. D. STEWART, G. R. |
author_facet |
PRESS, M. C. GRAVES, J. D. STEWART, G. R. |
author_sort |
PRESS, M. C. |
title |
Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
title_short |
Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
title_full |
Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
title_fullStr |
Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
title_full_unstemmed |
Transpiration and Carbon Acquisition in Root Hemiparasitic Angiosperms |
title_sort |
transpiration and carbon acquisition in root hemiparasitic angiosperms |
publisher |
Oxford University Press |
publishDate |
1988 |
url |
http://jxb.oxfordjournals.org/cgi/content/short/39/8/1009 https://doi.org/10.1093/jxb/39.8.1009 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://jxb.oxfordjournals.org/cgi/content/short/39/8/1009 http://dx.doi.org/10.1093/jxb/39.8.1009 |
op_rights |
Copyright (C) 1988, Society for Experimental Biology |
op_doi |
https://doi.org/10.1093/jxb/39.8.1009 |
container_title |
Journal of Experimental Botany |
container_volume |
39 |
container_issue |
8 |
container_start_page |
1009 |
op_container_end_page |
1014 |
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1766146868974190592 |