The response of Aster tripolium and Puccinellia maritima to atmospheric carbon dioxide enrichment and their interactions with flooding and salinity

Lenssen, G. M.; Duin, W.E. van; Jak, Patrick; Rozema, J.

doi:10.1016/0304-3770(95)00453-7

Cited by 26 publications

(13 citation statements)

References 17 publications

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“…Changes to P. maritima distribution could also be caused by climate change. Experimental work on P. maritima grown in pots suggests that the growth response of P. maritima to elevated CO 2 is small and that biomass allocation to shoots and roots remains similar under different CO 2 concentrations (Lenssen et al ., ). Our study also finds that the growth of this species is not likely to be affected by increases in atmospheric CO 2 concentrations.…”

Section: Discussionmentioning

confidence: 99%

The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh

Reef

Spencer

Möller

et al. 2016

Global Change Biology

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Salt marshes can play a vital role in mitigating the effects of global environmental change by dissipating incident storm wave energy and, through accretion, tracking increasing water depths consequent upon sea level rise. Atmospheric CO concentrations and nutrient availability are two key variables that can affect the biological processes that contribute to marsh surface elevation gain. We measured the effects of CO concentrations and nutrient availability on surface elevation change in intact mixed-species blocks of UK salt marsh using six open-top chambers receiving CO -enriched (800 ppm) or ambient (400 ppm) air. We found more rapid surface elevation gain in elevated CO conditions: an average increase of 3.4 mm over the growing season relative to ambient CO . Boosted regression analysis to determine the relative influence of different parameters on elevation change identified that a 10% reduction in microbial activity in elevated CO -grown blocks had a positive influence on elevation. The biomass of Puccinellia maritima also had a positive influence on elevation, while other salt marsh species (e.g. Suaeda maritima) had no influence or a negative impact on elevation. Reduced rates of water use by the vegetation in the high CO treatment could be contributing to elevation gain, either directly through reduced soil shrinkage or indirectly by decreasing microbial respiration rates due to lower redox levels in the soil. Eutrophication did not influence elevation change in either CO treatment despite doubling aboveground biomass. The role of belowground processes (transpiration, root growth and decomposition) in the vertical adjustment of European salt marshes, which are primarily minerogenic in composition, could increase as atmospheric CO concentrations rise and should be considered in future wetland models for the region. Elevated CO conditions could enhance resilience in vulnerable systems such as those with low mineral sediment supply or where migration upwards within the tidal frame is constrained.

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Section: Discussionmentioning

confidence: 99%

The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh

Reef

Spencer

Möller

et al. 2016

Global Change Biology

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“…This may also be the case for Aster tripolium, a C 3 halophyte which is likely to be a promising crop plant in future (Geissler et al 2009a, b). There have been some hints in literature that this species may benefit from rising CO 2 concentrations Rozema et al 1990;Lenssen et al 1995), but there has not yet been any detailed information about the interaction between elevated CO 2 and salinity tolerance of this plant available, especially regarding the molecular level. Hence, we studied how an increase in CO 2 concentration, i.e.…”

Section: Introductionmentioning

confidence: 97%

Elevated atmospheric CO2 concentration enhances salinity tolerance in Aster tripolium L.

Geißler

Hussin

Koyro

2009

Planta

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Our study aimed at investigating the influence of elevated atmospheric CO(2) concentration on the salinity tolerance of the cash crop halophyte Aster tripolium L., thereby focussing on protein expression and enzyme activities. The plants were grown in hydroponics using a nutrient solution with or without addition of NaCl (75% seawater salinity), under ambient (380 ppm) and elevated (520 ppm) CO(2). Under ambient CO(2) concentration enhanced expressions and activities of the antioxidant enzymes superoxide dismutase, ascorbate peroxidase, and glutathione-S-transferase in the salt-treatments were recorded as a reaction to oxidative stress. Elevated CO(2) led to significantly higher enzyme expressions and activities in the salt-treatments, so that reactive oxygen species could be detoxified more effectively. Furthermore, the expression of a protective heat shock protein (class 20) increased under salinity and was even further enhanced under elevated CO(2) concentration. Additional energy had to be provided for the mechanisms mentioned above, which was indicated by the increased expression of a beta ATPase subunit and higher v-, p- and f-ATPase activities under salinity. The higher ATPase expression and activities also enable a more efficient ion transport and compartmentation for the maintenance of ion homeostasis. We conclude that elevated CO(2) concentration is able to improve the survival of A. tripolium under salinity because more energy is provided for the synthesis and enhanced activity of enzymes and proteins which enable a more efficient ROS detoxification and ion compartmentation/transport.

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“…Nonetheless, drought stress can be ameliorated at elevated CO 2 concentration as a result of lower stomatal conductance and greater intercellular CO 2 concentration (Leakey, 2009). Furthermore, the effects of CO 2 enrichment on plants can be modified by other environmental factors, such as salinity (Lenssen et al , 1993, 1995; Rozema, 1993) and temperature.…”

Section: Introductionmentioning

confidence: 99%

Synergic effect of salinity and CO2 enrichment on growth and photosynthetic responses of the invasive cordgrass Spartina densiflora

Mateos‐Naranjo

Redondo‐Gómez

Álvarez

et al. 2010

Journal of Experimental Botany

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Spartina densiflora is a C4 halophytic species that has proved to have a high invasive potential which derives from its clonal growth and its physiological plasticity to environmental factors, such as salinity. A greenhouse experiment was designed to investigate the synergic effect of 380 and 700 ppm CO2 at 0, 171, and 510 mM NaCl on the growth and the photosynthetic apparatus of S. densiflora by measuring chlorophyll fluorescence parameters, gas exchange and photosynthetic pigment concentrations. PEPC activity and total ash, sodium, potassium, calcium, magnesium, and zinc concentrations were determined, as well as the C/N ratio. Elevated CO2 stimulated growth of S. densiflora at 0 and 171 mM NaCl external salinity after 90 d of treatment. This growth enhancement was associated with a greater leaf area and improved leaf water relations rather than with variations in net photosynthetic rate (A). Despite the fact that stomatal conductance decreased in response to 700 ppm CO2 after 30 d of treatment, A was not affected. This response of A to elevated CO2 concentration might be explained by an enhanced PEPC carboxylation capacity. On the whole, plant nutrient concentrations declined under elevated CO2, which can be ascribed to the dilution effect caused by an increase in biomass and the higher water content found at 700 ppm CO2. Finally, CO2 and salinity had a marked overall effect on the photochemical (PSII) apparatus and the synthesis of photosynthetic pigments.

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The response of Aster tripolium and Puccinellia maritima to atmospheric carbon dioxide enrichment and their interactions with flooding and salinity

Cited by 26 publications

References 17 publications

The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh

The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh

Elevated atmospheric CO2 concentration enhances salinity tolerance in Aster tripolium L.

Synergic effect of salinity and CO2 enrichment on growth and photosynthetic responses of the invasive cordgrass Spartina densiflora

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The response of Aster tripolium and Puccinellia maritima to atmospheric carbon dioxide enrichment and their interactions with flooding and salinity

Cited by 26 publications

References 17 publications

The effects of elevated CO2 and eutrophication on surface elevation gain in a European salt marsh

The effects of elevated CO2 and eutrophication on surface elevation gain in a European salt marsh

Elevated atmospheric CO2 concentration enhances salinity tolerance in Aster tripolium L.

Synergic effect of salinity and CO2 enrichment on growth and photosynthetic responses of the invasive cordgrass Spartina densiflora

Contact Info

Product

Resources

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The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh

The effects of elevated CO₂ and eutrophication on surface elevation gain in a European salt marsh