Photosynthetic down-regulation under elevated CO2 exposure can be prevented by nitrogen supply in nodulated alfalfa

Sanz‐Sáez, Álvaro; Erice, Gorka; Aranjuelo, Íker; Nogués, Salvador; Irigoyen, Juan José; Sánchez‐Díaz, Manuel

doi:10.1016/j.jplph.2010.06.015

Cited by 74 publications

(49 citation statements)

References 45 publications

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“…In contrast, Greer and Sicard (2009) did not find any significant effects of temperature increases from 24 to 28°C on grapevine photosynthesis. In agreement with the latter study, the impact of a 4°C increase in temperature was negligible compared with the effect of an increase of CO 2 levels up to 700 ppm in alfalfa (Sanz-Sáez et al 2010) and grapevine (Salazar-Parra et al 2015) plants. Therefore, although elevated temperature in the CC treatment may have partially contributed to the enhanced A N values, it is likely that the increase in CO 2 concentration was the main factor affecting photosynthetic rates under the present experimental conditions.…”

Section: Discussionsupporting

confidence: 89%

How will climate change influence grapevine cv. Tempranillo photosynthesis under different soil textures?

et al. 2015

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While photosynthetic responses to elevated CO2, elevated temperature, or water availability have previously been reported for grapevine as responses to single stress factors, reports on the combined effect of multiple stress factors are scarce. In the present work, we evaluated effects of simulated climate change [CC; 700 ppm CO2, 28/18 °C, and 33/53% relative humidity (RH), day/night] versus current conditions (375 ppm CO2, 24/14 °C, and 45/65% RH), water availability (well-irrigated vs. water deficit), and different types of soil textures (41, 19, and 8% of soil clay contents) on grapevine (Vitis vinifera L. cv. Tempranillo) photosynthesis. Plants were grown using the fruit-bearing cutting model. CC increased the photosynthetic activity of grapevine plants grown under well-watered conditions, but such beneficial effects of elevated CO2, elevated temperature, and low RH were abolished by water deficit. Under water-deficit conditions, plants subjected to CC conditions had similar photosynthetic rates as those grown under current conditions, despite their higher sub-stomatal CO2 concentrations. As expected, water deficit reduced photosynthetic activity in association with inducing stomatal closure that prevents water loss. Evidence for photosynthetic downregulation under elevated CO2 was observed, with decreases in photosynthetic capacity and leaf N content and increases in the C/N ratio in plants subjected to CC conditions. Soil texture had no marked effects on photosynthesis and did not modify the photosynthetic response to CC and water-deficit conditions. However, in mature well-irrigated plants grown in the soils with the highest sand content, an important decrease in stomatal conductance was observed as well as a slight decrease in the utilization of absorbed light in photosynthetic electron transport (measured as photochemical quenching), possibly related to a low water-retention capacity of these soils even under well-watered conditions.

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Section: Discussionsupporting

confidence: 89%

How will climate change influence grapevine cv. Tempranillo photosynthesis under different soil textures?

et al. 2015

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“…In this respect, increases in nodule C availability under elevated CO 2 may enhance nodule activity, providing more N for plant growth and thus avoiding photosynthetic acclimation (Vance and Heichel, 1991). In previous studies, the application of N compounds avoided acclimation and increased the yield of alfalfa (Sanz-Sáez et al, 2010). Furthermore, inoculation with a highly efficient N 2 -fixing strain of Sinorhizobium may lead to avoidance of photosynthetic acclimation and enhancement of potential production (Bertrand et al, 2007b).…”

Section: Introductionmentioning

confidence: 96%

“…At elevated CO 2 concentrations, a low supply of soil N could limit photosynthesis (Luo et al, 2004;Peterson et al, 1999;Sanz-Sáez et al, 2010). Decreased leaf N content could be the consequence of accumulation of carbohydrates, leaf structural material and an increase in plant internal demands for N (Ellsworth et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Decreased leaf N content could be the consequence of accumulation of carbohydrates, leaf structural material and an increase in plant internal demands for N (Ellsworth et al, 2004). Furthermore, low leaf N availability in elevated CO 2 conditions causes the immobilisation of C, leading to carbohydrate accumulation and thus enhancement of photosynthetic down-regulation and yield limitation (Sanz-Sáez et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Alfalfa forage digestibility, quality and yield under future climate change scenarios vary with Sinorhizobium meliloti strain

Sanz‐Sáez

Erice

Aguirreolea

et al. 2012

Journal of Plant Physiology

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“…This reduction in photosynthetic rate is induced by decrease in leaf nitrogen [N] and phosphorus [P] concentrations and stomatal conductance in response to high [CO2] (SANZ-SÁEZ et al, 2010;LEE et al, 2011). The drought stress reduce the stomatal conductance too, besides the leaf [N] and [P], due the lower mineral absorbing.…”

Section: Introductionmentioning

confidence: 99%

Leaf concentrations of nitrogen and phosphorus in phaseolus vulgaris l. Plants under high CO2 concentration and drought stress

Silva

Ferreira²,

Justino³

et al. 2014

Eng. Agríc.

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This study aims to evaluate the leaf concentration of nitrogen and phosphorus correlated to the production of photoassimilates in beans plants (Phaseolus vulgaris L.) under high [CO2] and drought stress. The experiment was conducted in Viçosa (Brazil), during the period from April to July 2009, by using open-top chambers equipped with CO2 injection system. The drought stress was applied, through the irrigation suspension, during the period from flowering to maturation.

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Photosynthetic down-regulation under elevated CO2 exposure can be prevented by nitrogen supply in nodulated alfalfa

Cited by 74 publications

References 45 publications

How will climate change influence grapevine cv. Tempranillo photosynthesis under different soil textures?

How will climate change influence grapevine cv. Tempranillo photosynthesis under different soil textures?

Alfalfa forage digestibility, quality and yield under future climate change scenarios vary with Sinorhizobium meliloti strain

Leaf concentrations of nitrogen and phosphorus in phaseolus vulgaris l. Plants under high CO2 concentration and drought stress

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