Combined effects of CO2 concentration and enhanced UV-B radiation on faba bean

Tosserams, M.; Visser, A. J.; Groen, M. W.; Kalis, G.; Magendans, Erwin; Rozema, J.

doi:10.1007/978-94-017-2892-8_19

Cited by 15 publications

(14 citation statements)

References 7 publications

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“…However, the transgenic plants exhibited increased tolerance to sublethal UV-B stress in comparison with wild-type plants. Typical symptoms of UV-B stress include inhibition of growth (Day et al, 2001), decreased biomass (Tosserams et al, 2001), and loss of photosynthetic capability (Bassman et al, 2001). For wild-type plants, the conditions of UV-B stress used in this study resulted in decreased growth, a reduction in biomass and seed yield, reduced levels of leaf chlorophyll, and formation of leaf anthocyanin.…”

Section: Discussionmentioning

confidence: 99%

Characterization of an Ultraviolet B-Induced Lipase in Arabidopsis

Taylor

Wang

et al. 2004

Plant Physiology

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An Arabidopsis expressed sequence tag clone, 221D24, encoding a lipase has been characterized using an antisense approach. The lipase gene is expressed during normal growth and development of Arabidopsis rosette leaves but is down-regulated as the leaves senesce. When plants are exposed to sublethal levels of UV-B radiation, expression of the lipase is strongly upregulated. The lipase protein is localized in the cell cytosol and is present in all organs of Arabidopsis plants. Recombinant lipase protein produced in Escherichia coli preferentially hydrolyzed phospholipids, indicating that the gene encodes a phospholipase. Transgenic plants in which lipase expression is suppressed showed enhanced tolerance to UV-B stress but not osmotic stress and were unable to up-regulate PR-1 expression when irradiated with UV-B. The observations collectively indicate that the lipase is capable of deesterifying membrane phospholipids and is up-regulated in response to UV-B irradiation.

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Section: Discussionmentioning

confidence: 99%

Characterization of an Ultraviolet B-Induced Lipase in Arabidopsis

Taylor

Wang

et al. 2004

Plant Physiology

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“…The evidence in faba bean is rather equivocal. While enriched CO 2 (700 μmol/mol) resulted in higher photosynthetic water-use efficiency over that at ambient levels (350 μmol/mol), with differences among cultivars (Avola et al 2008), the improvement was significant only in the presence of sufficient water supply (Wu and Wang 2000) and without increases in solar UV-B irradiance (Tosserams et al 2001). In the absence of limiting drought or UV-B, doubled CO 2 concentration resulted in yield increases of 37% (Tosserams et al 2001) to 86% (Wu and Wang 2000).…”

Section: Adaptation To Elevated Carbon Dioxide Concentration In the Airmentioning

confidence: 95%

Genetic Adjustment to Changing Climates: faba bean

Duc¹,

Link²,

Marget³

et al. 2011

Crop Adaptation to Climate Change

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“…Th e estimated parameters were R D (dark respiration), P Nsat (photosynthesis rate at saturating light and elevated CO 2 ), α (the apparent effi ciency of light energy conversion on an incident light basis, quantum effi ciency) (Saroussi, Beer 2007;Le Roux et al 1999). A light compensation point (LCP) parameter was deduced from the Mitscherlich function (Tosserams et al 2001;Heschel et al 2004). Net photosynthesis rate presented in the analysis was derived from at least four single leaf measurements at each measurement date.…”

Section: Gas Exchange Measurementsmentioning

confidence: 99%

Non-linear mixed-effects modeling for photosynthetic response of Rosa hybrida L. under elevated CO<sub>2 </sub>in greenhouses - Short communication

Öztürk¹,

Ottosen²,

Ritz

et al. 2011

Hort. Sci. (Prague)

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Ozturk I., Ottosen C.O., Ritz C., Streibig J.C., 2011. Non-linear mixed-eff ects modeling for photosynthetic response of Rosa hybrida L. under elevated CO 2 in greenhouses. Hort. Sci. (Prague), 38: 43-47.Photosynthetic response to light was measured on the leaves of two cultivars of Rosa hybrida L. (Escimo and Mercedes) in the greenhouse to obtain light-response curves and their parameters. Th e aim was to use a model to simulate leaf photosynthetic carbon gain with respect to environmental conditions. Leaf gas exchanges were measured at 11 light intensities from 0 to 1,400 μmol/m 2 s, at 800 ppm CO 2 , 25°C, and 65 ± 5% relative humidity. In order to describe the data corresponding to diff erent measurement dates, the non-linear mixed-eff ects regression analysis was used. Th e model successfully described the photosynthetic responses. Th e analysis indicated signifi cant diff erences in light saturated photosynthetic rates and in light compensation points. Th e cultivar with the lower light compensation points (Escimo) maintained a higher carbon gain despite its lower (but not-signifi cant) quantum effi ciency. Th e results suggested acclimation response, as carbon assimilation rates and stomatal conductance at each measurement date were higher for Escimo than Mercedes. Diff erences in photosynthesis rates were attributed to the adaptive capacity of the cultivars to light conditions at a specifi c day when the experiments were undertaken.Keywords: miniature rose; irradiance; response curve; carbon assimilation Hort. Sci. (Prague)Vol. 38, 2011, No. 1: 43-47 Exploring the diff erences in effi ciency in energy conversion, and photosynthetic capacity in diff erent cultivars and/or species under various abiotic conditions is an important strategy to investigate the underlying mechanisms in carbon assimilation. Even though pot-grown plants in greenhouses are supplied with standardized nutrients, water, and light levels, these plants still experience strong variation in light and temperature over the day and across seasons (Poorter et al. 2010). Studies shown that there is evidence for inter-and intra-specifi c variability in net photosynthesis rate of plants (Ottosen, Mentz 2000; Barman et al. 2008). Th is suggests that individual responses exhibit random deviations.Studies of gas exchange provide a tool for evaluating the impact of abiotic conditions on crop produc-

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Combined effects of CO2 concentration and enhanced UV-B radiation on faba bean

Cited by 15 publications

References 7 publications

Characterization of an Ultraviolet B-Induced Lipase in Arabidopsis

Characterization of an Ultraviolet B-Induced Lipase in Arabidopsis

Genetic Adjustment to Changing Climates: faba bean

Non-linear mixed-effects modeling for photosynthetic response of Rosa hybrida L. under elevated CO<sub>2 </sub>in greenhouses - Short communication

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