Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses
Pressure-volume and transpiration curves were established in summer and autumn on leaves of <First Red> and <Twingo> rose plants grown at control and at elevated CO2 ([CO2]a = 35,5 and 70 Pa respectively). CO2 enrichment resulted in an increase in the non-osmotic water fraction in both summer and autumn. Osmoregulation, as evidenced by a decrease in osmotic potential at full turgor and at turgor loss, and a concomitant decrease in the relative water content at the point of turgor loss, were observed as a consequence of elevated CO2 in leaves of First Red, in autumn only, while the average elastic modulus was increased only in <Twingo> leaves. These adaptative mechanisms are known to improve the capacity of leaves to take up water by lowering their water potential. The water potential at complete stomatal closure, although negative, was higher under elevated CO2 conditions in <First Red> in both summer and autumn, and in <Twingo> in autumn, indicating a higher capacity of leaves to protect themselves against water losses through transpiration. The cuticular transpiration rate was decreased at high CO2 in the two cultivars, but in autumn only. Post-harvest trials showed that the number of days before the water balance started to become negative was delayed, while vase life was extended by two days, for the cut roses from the high CO2 treatment.
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Subjects: | F60 - Physiologie et biochimie végétale, F62 - Physiologie végétale - Croissance et développement, Rosa, fleur coupée, hybride, relation plante eau, dioxyde de carbone, bilan hydrique, sénescence, physiologie végétale, cuticule végétale, glucide, pression osmotique, http://aims.fao.org/aos/agrovoc/c_6655, http://aims.fao.org/aos/agrovoc/c_16485, http://aims.fao.org/aos/agrovoc/c_3707, http://aims.fao.org/aos/agrovoc/c_16147, http://aims.fao.org/aos/agrovoc/c_1302, http://aims.fao.org/aos/agrovoc/c_8311, http://aims.fao.org/aos/agrovoc/c_14200, http://aims.fao.org/aos/agrovoc/c_25189, http://aims.fao.org/aos/agrovoc/c_27982, http://aims.fao.org/aos/agrovoc/c_1300, http://aims.fao.org/aos/agrovoc/c_5443, |
Online Access: | http://agritrop.cirad.fr/508325/ http://agritrop.cirad.fr/508325/1/508325.pdf |
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dig-cirad-fr-5083252024-01-28T10:33:27Z http://agritrop.cirad.fr/508325/ http://agritrop.cirad.fr/508325/ Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses. Urban Laurent, Six Samuel, Barthélémy Loïc, Bearez Philippe. 2002. Journal of Plant Physiology, 159 (7) : 717-723.https://doi.org/10.1078/0176-1617-0602 <https://doi.org/10.1078/0176-1617-0602> Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses Urban, Laurent Six, Samuel Barthélémy, Loïc Bearez, Philippe eng 2002 Journal of Plant Physiology F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 Pressure-volume and transpiration curves were established in summer and autumn on leaves of <First Red> and <Twingo> rose plants grown at control and at elevated CO2 ([CO2]a = 35,5 and 70 Pa respectively). CO2 enrichment resulted in an increase in the non-osmotic water fraction in both summer and autumn. Osmoregulation, as evidenced by a decrease in osmotic potential at full turgor and at turgor loss, and a concomitant decrease in the relative water content at the point of turgor loss, were observed as a consequence of elevated CO2 in leaves of First Red, in autumn only, while the average elastic modulus was increased only in <Twingo> leaves. These adaptative mechanisms are known to improve the capacity of leaves to take up water by lowering their water potential. The water potential at complete stomatal closure, although negative, was higher under elevated CO2 conditions in <First Red> in both summer and autumn, and in <Twingo> in autumn, indicating a higher capacity of leaves to protect themselves against water losses through transpiration. The cuticular transpiration rate was decreased at high CO2 in the two cultivars, but in autumn only. Post-harvest trials showed that the number of days before the water balance started to become negative was delayed, while vase life was extended by two days, for the cut roses from the high CO2 treatment. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/508325/1/508325.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1078/0176-1617-0602 10.1078/0176-1617-0602 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=173751 info:eu-repo/semantics/altIdentifier/doi/10.1078/0176-1617-0602 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1078/0176-1617-0602 |
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F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 |
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F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 Urban, Laurent Six, Samuel Barthélémy, Loïc Bearez, Philippe Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
description |
Pressure-volume and transpiration curves were established in summer and autumn on leaves of <First Red> and <Twingo> rose plants grown at control and at elevated CO2 ([CO2]a = 35,5 and 70 Pa respectively). CO2 enrichment resulted in an increase in the non-osmotic water fraction in both summer and autumn. Osmoregulation, as evidenced by a decrease in osmotic potential at full turgor and at turgor loss, and a concomitant decrease in the relative water content at the point of turgor loss, were observed as a consequence of elevated CO2 in leaves of First Red, in autumn only, while the average elastic modulus was increased only in <Twingo> leaves. These adaptative mechanisms are known to improve the capacity of leaves to take up water by lowering their water potential. The water potential at complete stomatal closure, although negative, was higher under elevated CO2 conditions in <First Red> in both summer and autumn, and in <Twingo> in autumn, indicating a higher capacity of leaves to protect themselves against water losses through transpiration. The cuticular transpiration rate was decreased at high CO2 in the two cultivars, but in autumn only. Post-harvest trials showed that the number of days before the water balance started to become negative was delayed, while vase life was extended by two days, for the cut roses from the high CO2 treatment. |
format |
article |
topic_facet |
F60 - Physiologie et biochimie végétale F62 - Physiologie végétale - Croissance et développement Rosa fleur coupée hybride relation plante eau dioxyde de carbone bilan hydrique sénescence physiologie végétale cuticule végétale glucide pression osmotique http://aims.fao.org/aos/agrovoc/c_6655 http://aims.fao.org/aos/agrovoc/c_16485 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_16147 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8311 http://aims.fao.org/aos/agrovoc/c_14200 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_27982 http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_5443 |
author |
Urban, Laurent Six, Samuel Barthélémy, Loïc Bearez, Philippe |
author_facet |
Urban, Laurent Six, Samuel Barthélémy, Loïc Bearez, Philippe |
author_sort |
Urban, Laurent |
title |
Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
title_short |
Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
title_full |
Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
title_fullStr |
Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
title_full_unstemmed |
Effect of elevated CO2 on leaf water relations, water balance and senescence of cut roses |
title_sort |
effect of elevated co2 on leaf water relations, water balance and senescence of cut roses |
url |
http://agritrop.cirad.fr/508325/ http://agritrop.cirad.fr/508325/1/508325.pdf |
work_keys_str_mv |
AT urbanlaurent effectofelevatedco2onleafwaterrelationswaterbalanceandsenescenceofcutroses AT sixsamuel effectofelevatedco2onleafwaterrelationswaterbalanceandsenescenceofcutroses AT barthelemyloic effectofelevatedco2onleafwaterrelationswaterbalanceandsenescenceofcutroses AT bearezphilippe effectofelevatedco2onleafwaterrelationswaterbalanceandsenescenceofcutroses |
_version_ |
1792495307184930816 |