2024-03-28T11:18:19Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1422622017-01-10T01:53:00Zcom_10261_118com_10261_6com_10261_75col_10261_497col_10261_454
Carbon balance, partitioning and photosynthetic acclimation in fruiting gravepine (Vitis Vinifera L. CV. Tempranillo) grown under simulated climate change (elevated CO2, elevated temperature and mode rate drought) scenarios in temperature gradient greenhouses
Salazar-Parra, Carolina
Aranjuelo, Iker
Pascual Elizalde, Inmaculada
Aguirreolea, Jone
Sánchez-Díaz, Manuel
Irigoyen, Juan José
Araus, José Luis
Morales Iribas, Fermín
Ministerio de Economía y Competitividad (España)
Fundación Universitaria de Navarra
Caja Navarra
Gobierno de Aragón
Asociación de Amigos de la Universidad de Navarra
Trabajo presentado en el XIII Congresso Luso-Espanhol de Fisiologia Vegetal, celebrado en Lisboa del 24 al 28 de julio de 2013.
Experiments were conducted in grapevine (Vitis vinifera L. cv. Tempranillo) fruit-bearing cuttings, using temperature gradient greenhouses (TGG), to investigate the
possible effects of future climate scenarios: elevated CO2
(700 ppm) vs. ambient (ca.375 ppm), elevated temperature (+4ºC) vs. ambient and partia
l vs. full irrigation, on C balance, partitioning
and grape quality.
Carbon balance was followed monitoring net
photosynthesis (AN, C gain), respiration (RD) and photorespiration (RL) (C losses). For
C partitioning characterization, 13 C isotopic composition (δ13C) was modified (-24.93 ‰)
in the elevated CO2
TGGs, with respect to that of the ambient TGGs (-10.30 ‰).
Elevated CO2
increased transiently (after 10 days of treatment) AN
irrespective of water
availability and temperature, but effects disappeared 10 days later.
In most cases, no differences in RL
were found. When grown under ambient temperature (regardless of
water status), leaves respired more under elevated than under current CO2
concentrations at both sampling dates, whereas all leaves respired similarly to controls
when grown under elevated temperature. Carbon and N isotopic composition (δ13C and δ15N respectively) was characterized in roots, cuttings, shoots, petioles, leaves, rachides and berries. Data revealed a low C-sink strength of cuttings and rachides, whereas leaf N decreased as a response to elevated CO2
. Plants exposed to elevated CO2 did acclimate. Such acclimation was reflected in lower AN rates measured at elevated CO2 and a higher C/N ratio in plants grown at elevated CO2. After 20
days of treatment, no oxidative damage to chlorophylls or carotenoids was observed,
suggesting a protective role of CO2 either at current or elevated temperatures against
the adverse effect of water stress. Treatments simulating climate change influenced g
rapevine maturation. Climate change (elevated CO2 in interaction with water deficit,
but irrespective of temperature) shortened maturation time. pH and extractable
anthocyanins were not affected, whereas acidity, malic acid, total and potential
anthocyanins, phenolic richness, colour intensity and tonality index were only slightly
altered under some particular circumstances.
2017-01-09T10:26:04Z
2017-01-09T10:26:04Z
2013-07
comunicación de congreso
XIII Congresso Luso-Espanhol de Fisiologia Vegetal (2013)
http://hdl.handle.net/10261/142262
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100010293
http://dx.doi.org/10.13039/501100010067
eng
Sí
closedAccess