Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants

Mikkelsen, Teis Nørgaard; Michelsen, Anders; Ro‐Poulsen, H.; Linden, Leon Gareth van der

doi:10.1016/j.jplph.2011.02.011

Cited by 111 publications

(63 citation statements)

References 77 publications

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“…Thus, reduced TR0/CSm and ET0/CSm indicates that active RCs are converted into inactive RCs, reducing the efficiency of trapping and a decline in PSII activity. Similar results have been reported in heath plants under drought stress (Albert et al, 2011), in spinach leaves under low pH (Tongra et al, 2011) and in tomato leaf under heat stress (Zushi et al, 2012). In contrast, in the specific fluxes RC, ABS/RC, TR0/RC, and DI0/RC were relatively higher under drought stress (Figures 5 and 6).…”

Section: Discussionsupporting

confidence: 88%

“…Water deficit affects cell turgidity and stomatal aperture of leaves resulting in decreases in both transpiration rates and CO2 assimilation, which inhibits leaf metabolism (Souza et al, 2004;Dos Santos et al, 2006;Waseem et al, 2011). Under reduced rate of CO2 assimilation, the equilibrium between photochemical activity at photosystem II (PSII) and electron requirement for photosynthesis is affected, generating an over excitation on photosynthetic system and photoinhibitory damages of PSII reaction centers, RCs (van Heerden et al, 2003;Albert et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Physiological and photosynthetic response of quinoa to drought stress

Fghire

Anaya

Ali

et al. 2015

Chilean J. Agric. Res.

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Water shortage is a critical problem touching plant growth and yield in semi-arid areas, for instance the Mediterranean region. For this reason was studied the physiological basis of drought tolerance of a new, drought tolerant crop quinoa (Chenopodium quinoa Willd.) tested in Morocco in two successive seasons, subject to four irrigation treatments (100, 50, and 33%ETc, and rainfed). The chlorophyll a fluorescence transients were analyzed by the JIP-test to translate stressinduced damage in these transients to changes in biophysical parameter's allowing quantification of the energy flow through the photosynthetic apparatus. Drought stress induced a significant decrease in the maximum quantum yield of primary photochemistry (φP0 = Fv/Fm), and the quantum yield of electron transport (φE0). The amount of active Photosystem II (PSII) reaction centers (RC) per excited cross section (RC/CS) also decreased when exposed to the highest drought stress. The effective antenna size of active RCs (ABS/RC) increased and the effective dissipation per active reaction centers (DIo/RC) increased by increasing drought stress during the growth season in comparison to the control. However the performance index (PI), was a very sensitive indicator of the physiological status of plants. Leaf area index, leaf water potential and stomatal conductance decreased as the drought increased. These results indicate that, in quinoa leaf, JIP-test can be used as a sensitive method for measuring drought stress effects.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Physiological and photosynthetic response of quinoa to drought stress

Fghire

Anaya

Ali

et al. 2015

Chilean J. Agric. Res.

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show abstract

“…Nevertheless, information about the effects of CC on grapevine photosynthesis is rather fragmentary (Salazar-Parra et al 2012a. Some studies have documented effects of elevated CO 2 concentration, water availability, and elevated temperature independently (see above), but not yet in combination because multifactorial studies are complex, difficult, and expensive to execute under field conditions (Bindi et al 2001;Salazar-Parra et al 2010, 2012aAlbert et al 2011). Today, advanced methodologies are available for using greenhouses to simulate CC scenarios , enabling comparison of current and future conditions.…”

Section: Introductionmentioning

confidence: 99%

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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“…changes in enzyme activities, [41] diminished coupling of above-and belowground C processes, [5,42] going along with negative effects on plant photosynthesis. [43] Our results obtained by isotopic manipulation of atmospheric CO 2 suggest that differences in water regimes will modulate the soil C turnover times.…”

Section: Soil-respired 13 Comentioning

confidence: 75%

In situ¹³CO₂ pulse‐labeling in a temperate heathland – development of a mobile multi‐plot field setup

Reinsch

2013

Rapid Comm Mass Spectrometry

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Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants

Cited by 111 publications

References 77 publications

Physiological and photosynthetic response of quinoa to drought stress

Physiological and photosynthetic response of quinoa to drought stress

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

In situ¹³CO₂ pulse‐labeling in a temperate heathland – development of a mobile multi‐plot field setup

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Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants

Cited by 111 publications

References 77 publications

Physiological and photosynthetic response of quinoa to drought stress

Physiological and photosynthetic response of quinoa to drought stress

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

In situ13CO2 pulse‐labeling in a temperate heathland – development of a mobile multi‐plot field setup

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In situ¹³CO₂ pulse‐labeling in a temperate heathland – development of a mobile multi‐plot field setup