The plasticity of the photosynthetic apparatus and antioxidant responses are critical for the dispersion of Rhizophora mangle along a salinity gradient

Lancaster Environment Centre

Electronic data

AQBOT-D-22-00075_R2
Rights statement: This is the author’s version of a work that was accepted for publication in Aquatic Botany. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Aquatic Botany, 185, 2022 DOI: 10.1016/j.aquabot.2022.103609
Accepted author manuscript, 4.63 MB, PDF document
Embargo ends: 9/12/24
Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

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https://doi.org/10.1016/j.aquabot.2022.103609
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Keywords

Antioxidant metabolism, Climate change, Mangroves, Photosynthetic yield

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Research output: Contribution to Journal/Magazine › Journal article › peer-review

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The plasticity of the photosynthetic apparatus and antioxidant responses are critical for the dispersion of Rhizophora mangle along a salinity gradient. / Pereira Silva, Bruno; Saballo, Heloisa Maria; Moreira Lobo, Ana et al.
In: Aquatic Botany, Vol. 185, 103609, 31.03.2023.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{16050c2372e3448182b43aa18fc92051,

title = "The plasticity of the photosynthetic apparatus and antioxidant responses are critical for the dispersion of Rhizophora mangle along a salinity gradient",

abstract = "The physiological mechanisms responsible for salinity tolerance in Rhizophora mangle remain unclear. Moreover, the effects of climate change on the distribution and abundance of mangrove forests are unknown. Thus, to elucidate the possible factors responsible for saline tolerance in this species, we investigated the growth and physiological parameters in young plants cultivated in a saline gradient (0, 10, 35, and 70 ppt). Biometric indicators, water status parameters, cell integrity, ions concentrations in leaves and roots, pigment concentrations, chlorophyll a fluorescence, oxidative stress indicators, and antioxidant enzyme activities were evaluated. The results showed that R. mangle could grow in the absence (0 ppt) or moderate salinity (10 ppt). However, byincreasing the salinity to sea level (35 ppt), the growth and development decreased compared to plants grown at ten ppt. In hypersalinity (70 ppt), plant growth and development are severely hampered. Under hypersalinity, the increased concentration of H2O2 promoted lipid peroxidation and membrane damage. The chlorophyll contents decreased, and accessory pigment concentrations increased. Moreover, the modulation of the quantum yield of PSII and the antioxidant system was crucial to avoiding photoinhibition and salinity tolerance in R. mangle.",

keywords = "Antioxidant metabolism, Climate change, Mangroves, Photosynthetic yield",

author = "{Pereira Silva}, Bruno and Saballo, {Heloisa Maria} and {Moreira Lobo}, Ana and {Costa Lima Neto}, Milton",

note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Aquatic Botany. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Aquatic Botany, 185, 2022 DOI: 10.1016/j.aquabot.2022.103609",

year = "2023",

month = mar,

day = "31",

doi = "10.1016/j.aquabot.2022.103609",

language = "English",

volume = "185",

journal = "Aquatic Botany",

issn = "0304-3770",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The plasticity of the photosynthetic apparatus and antioxidant responses are critical for the dispersion of Rhizophora mangle along a salinity gradient

AU - Pereira Silva, Bruno

AU - Saballo, Heloisa Maria

AU - Moreira Lobo, Ana

AU - Costa Lima Neto, Milton

N1 - This is the author’s version of a work that was accepted for publication in Aquatic Botany. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Aquatic Botany, 185, 2022 DOI: 10.1016/j.aquabot.2022.103609

PY - 2023/3/31

Y1 - 2023/3/31

N2 - The physiological mechanisms responsible for salinity tolerance in Rhizophora mangle remain unclear. Moreover, the effects of climate change on the distribution and abundance of mangrove forests are unknown. Thus, to elucidate the possible factors responsible for saline tolerance in this species, we investigated the growth and physiological parameters in young plants cultivated in a saline gradient (0, 10, 35, and 70 ppt). Biometric indicators, water status parameters, cell integrity, ions concentrations in leaves and roots, pigment concentrations, chlorophyll a fluorescence, oxidative stress indicators, and antioxidant enzyme activities were evaluated. The results showed that R. mangle could grow in the absence (0 ppt) or moderate salinity (10 ppt). However, byincreasing the salinity to sea level (35 ppt), the growth and development decreased compared to plants grown at ten ppt. In hypersalinity (70 ppt), plant growth and development are severely hampered. Under hypersalinity, the increased concentration of H2O2 promoted lipid peroxidation and membrane damage. The chlorophyll contents decreased, and accessory pigment concentrations increased. Moreover, the modulation of the quantum yield of PSII and the antioxidant system was crucial to avoiding photoinhibition and salinity tolerance in R. mangle.

AB - The physiological mechanisms responsible for salinity tolerance in Rhizophora mangle remain unclear. Moreover, the effects of climate change on the distribution and abundance of mangrove forests are unknown. Thus, to elucidate the possible factors responsible for saline tolerance in this species, we investigated the growth and physiological parameters in young plants cultivated in a saline gradient (0, 10, 35, and 70 ppt). Biometric indicators, water status parameters, cell integrity, ions concentrations in leaves and roots, pigment concentrations, chlorophyll a fluorescence, oxidative stress indicators, and antioxidant enzyme activities were evaluated. The results showed that R. mangle could grow in the absence (0 ppt) or moderate salinity (10 ppt). However, byincreasing the salinity to sea level (35 ppt), the growth and development decreased compared to plants grown at ten ppt. In hypersalinity (70 ppt), plant growth and development are severely hampered. Under hypersalinity, the increased concentration of H2O2 promoted lipid peroxidation and membrane damage. The chlorophyll contents decreased, and accessory pigment concentrations increased. Moreover, the modulation of the quantum yield of PSII and the antioxidant system was crucial to avoiding photoinhibition and salinity tolerance in R. mangle.

KW - Antioxidant metabolism

KW - Climate change

KW - Mangroves

KW - Photosynthetic yield

U2 - 10.1016/j.aquabot.2022.103609

DO - 10.1016/j.aquabot.2022.103609

M3 - Journal article

VL - 185

JO - Aquatic Botany

JF - Aquatic Botany

SN - 0304-3770

M1 - 103609

ER -

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