Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Jan 24;9(1):659.
doi: 10.1038/s41598-018-37346-4.

Impact of short-term extreme temperature events on physiological performance of Salicornia ramosissima J. Woods under optimal and sub-optimal saline conditions

Jesús Alberto Pérez-Romero  1 , Jose-Maria Barcia-Piedras  2 , Susana Redondo-Gómez  3 , Enrique Mateos-Naranjo  3
Affiliations

Impact of short-term extreme temperature events on physiological performance of Salicornia ramosissima J. Woods under optimal and sub-optimal saline conditions

Jesús Alberto Pérez-Romero et al. Sci Rep. .

Abstract

Increasing extreme temperature climatic events could exert an important effect on plant photosynthetic performance, which could be modulated by the co-occurrence with other environmental factors, such as salinity, in estuarine ecosystems. Therefore, a mesocosm experiment was designed to assess the impact of temperature events for three days (13/5 °C, 25/13 °C and 40/28 °C) in combination with two NaCl concentrations (171 and 1050 mM NaCl) on the physiological performance of Salicornia ramosissima. Extreme temperature events had a negative impact on S. ramosissima photosynthetic efficiency, this effect being more marked with cold wave at both salinities, compared with heat wave, even in presence of NaCl excess. This differential thermotolerance in the photosynthetic apparatus was ascribed to the greater integrity and functioning of its photosynthetic pathway at high temperature, as indicated by constant gs, Vc,max values at optimal salinity and the higher values of those parameters and gm recorded in combination with NaCl excess. Moreover, S. ramosissima was able to upregulate the energy sink capacity of its photochemical apparatus at elevated temperature and salinity by a greater energy excess dissipation capacity. This could have contributed to reducing the risk of oxidative stress, along with the recorded higher capacity for antioxidant enzyme activity modulation under these conditions.

PubMed Disclaimer

Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Osmotic potential, Ψo (A) and relative water content, RWC (B), in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13/5 °C, 22/15 °C and 40/28 °C) and two NaCl concentrations (171 and 1050 mM) after 3 days. Values represent mean ± SE, n = 10. Different letters indicate means that are significantly different from each other.
Figure 2
Figure 2
Net photosynthetic rate, AN (A), stomatal conductance, gs (B), intercellular CO2 concentration, Ci (C), mesophyll conductance, gm (D), maximum carboxylation rate, Vc,max (E) and intrinsic water use efficiency (iWUE) (F) in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13/5 °C, 22/15 °C and 40/28 °C) and two NaCl concentrations (171 and 1050 mM) after 3 days. Values represent mean ± SE, n = 10 for AN, gs, Ci and iWUE and n = 4 for gm and Vc,max. Different letters indicate means that are significantly different from each other.
Figure 3
Figure 3
Quantitative limitation of photosynthesis in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13/5 °C, 22/15 °C and 40/28 °C) and with 171 mM NaCl (A) and 1050 mM NaCl (B) after 3 days. SL, MCL and BL denote for stomatal, mesophyll and biochemical limitations, respectively. Values represent mean ± SE, n = 4.
Figure 4
Figure 4
Maximum quantum efficiency of PSII photochemistry, Fv/Fm (A), maximum ETR after which photo-inhibition can be observed, ETRmax (B) and ETRmax/AN (C) in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13–5 °C, 22–15 °C and 40–28 °C) and two NaCl concentrations (171 and 1050 mM) after 3 days. Values represent mean ± SE, n = 7. Different letters indicate means that are significantly different from each other.
Figure 5
Figure 5
Absorbed energy flux, ABS/CS (A), trapped energy flux, TR/CS (B), transport energy flux ET/CS (C) and dissipated energy fluxes, DI/CS (D) per cross section in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13/5 °C, 22/15 °C and 40/28 °C) and two NaCl concentrations (171 and 1050 mM) after 3 days. Values represent mean ± SE, n = 7. Different letters indicate means that are significantly different from each other.
Figure 6
Figure 6
Catalase, CAT (A), ascorbate peroxidase, APx (B) and guaiacol peroxidase, GPx (C) activity in randomly selected, primary branches of Salicornia ramosissima in response to treatment with three temperature ranges (13/5 °C, 22/15 °C and 40/28 °C) and two NaCl concentrations (171 and 1050 mM) after 3 days. Values represent mean ± SE, n = 3. Different letters indicate means that are significantly different from each other.
See this image and copyright information in PMC

References

    1. IPCC. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds)]. IPCC, Geneva, Switzerland, 151 pp (2014).
    1. Allen DJ, Ort DR. Impacts of chilling temperatures on photosynthesis in warm-climate plants. Trends Plant Sci. 2001;6:36–42. doi: 10.1016/S1360-1385(00)01808-2. - DOI - PubMed
    1. Orsenigo S, Mondoni A, Rossi G, Abeli T. Some like it hot and some like it cold, but not too much: plant responses to climate extremes. Plant Ecology. 2014;215(7):677–688. doi: 10.1007/s11258-014-0363-6. - DOI
    1. Huckle JM, Potter JA, Marrs RH. Influence of environmental factors on the growth and interactions between salt marsh plants: effects of salinity, sediment and waterlogging. Journal of Ecology. 2000;88(3):492–505. doi: 10.1046/j.1365-2745.2000.00464.x. - DOI
    1. Lu, D, et al. Nutritional Characterization and Changes in Quality of Salicornia Bigelovii Torr. during Storage. LWT - Food Science and Technology, 10.1016/j.lwt.2009.09.021 (2010).

Publication types

LinkOut - more resources