Chilling stress and hydrogen peroxide accumulation in Chrysanthemum morifolium and Spathiphyllum lanceifolium . Involvement of chlororespiration

Paredes, Miriam; Quiles, Marı́a José

doi:10.1016/j.jplph.2016.11.015

Cited by 13 publications

(7 citation statements)

References 39 publications

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“…Any excess light during photosynthesis would lead to photo-oxidative damage and reducing carbon fixation ( Paredes and Quiles, 2017 ). The non-photochemical quenching mechanism (NPQ) plays an essential role in the photoprotection mechanism ( Erickson et al, 2015 ).…”

Section: The Function Of Pgr5/pgrl1-mediated Cet In Plantsmentioning

confidence: 99%

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

Liu

Bai

et al. 2021

Front. Plant Sci.

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The cyclic electron transport (CET), after the linear electron transport (LET), is another important electron transport pathway during the light reactions of photosynthesis. The proton gradient regulation 5 (PGR5)/PRG5-like photosynthetic phenotype 1 (PGRL1) and the NADH dehydrogenase-like complex pathways are linked to the CET. Recently, the regulation of CET around photosystem I (PSI) has been recognized as crucial for photosynthesis and plant growth. Here, we summarized the main biochemical processes of the PGR5/PGRL1-dependent CET pathway and its physiological significance in protecting the photosystem II and PSI, ATP/NADPH ratio maintenance, and regulating the transitions between LET and CET in order to optimize photosynthesis when encountering unfavorable conditions. A better understanding of the PGR5/PGRL1-mediated CET during photosynthesis might provide novel strategies for improving crop yield in a world facing more extreme weather events with multiple stresses affecting the plants.

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Section: The Function Of Pgr5/pgrl1-mediated Cet In Plantsmentioning

confidence: 99%

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

Liu

Bai

et al. 2021

Front. Plant Sci.

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“…A NAD(P)H dehydrogenase (Ndh) complex also seems to be involved in the chlororespiratory pathway and is associated with the transfer of protons to the lumen (Peltier and Cournac, ). The potential role of chlororespiration in photosynthetic organisms has been questioned over the last 2two decades, but there is increasing evidence that it is related to photoprotective responses against abiotic stressors (Cornic, ; Streb and Cornic, ; Paredes and Quiles, ; Nawrocki et al , ). Streb et al () first proposed chlororespiration as a photoprotective strategy in alpine plants.…”

Section: Photobiochemistrymentioning

confidence: 99%

How do vascular plants perform photosynthesis in extreme environments? An integrative ecophysiological and biochemical story

et al. 2020

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Summary In this work, we review the physiological and molecular mechanisms that allow vascular plants to perform photosynthesis in extreme environments, such as deserts, polar and alpine ecosystems. Specifically, we discuss the morpho/anatomical, photochemical and metabolic adaptive processes that enable a positive carbon balance in photosynthetic tissues under extreme temperatures and/or severe water‐limiting conditions in C3 species. Nevertheless, only a few studies have described the in situ functioning of photoprotection in plants from extreme environments, given the intrinsic difficulties of fieldwork in remote places. However, they cover a substantial geographical and functional range, which allowed us to describe some general trends. In general, photoprotection relies on the same mechanisms as those operating in the remaining plant species, ranging from enhanced morphological photoprotection to increased scavenging of oxidative products such as reactive oxygen species. Much less information is available about the main physiological and biochemical drivers of photosynthesis: stomatal conductance (gs), mesophyll conductance (gm) and carbon fixation, mostly driven by RuBisCO carboxylation. Extreme environments shape adaptations in structures, such as cell wall and membrane composition, the concentration and activation state of Calvin–Benson cycle enzymes, and RuBisCO evolution, optimizing kinetic traits to ensure functionality. Altogether, these species display a combination of rearrangements, from the whole‐plant level to the molecular scale, to sustain a positive carbon balance in some of the most hostile environments on Earth.

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“…High temperature leads to enhanced ROS generation in plants (Königshofer et al, 2008). Frost and chilling conditions challenge the survival of plants and result in an outburst of ROS and enhanced lipid peroxidation (Paredes and Quiles, 2017). However, the Quetta adapted population and its counterpart in Faisalabad showed higher contents of MDA and H2O2 during winter months (Fig.…”

Section: Discussionmentioning

confidence: 98%

ALTERATIONS IN OXIDANTS AND PHOTOSYNTHETIC PIGMENTS AS POSSIBLE DETERMINANTS OF CROSS-LOCATIONAL ADAPTABILITY POTENTIAL IN TWO LEMONGRASS (Cymbopogon citratus) POPULATIONS

Shaukat¹

2018

PAKJAS

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Lemongrass [Cymbopogon citrates (DC) Stapf] is a cosmopolitan economically important grass with a natural potential to adapt to different climates. However, the mechanisms of cross-locational adaptability are not studied in this grass species. To explore some physiological basis of cross-locational adaptability potential of lemongrass, experiments were performed on one population each from Faisalabad and Quetta, Pakistan. Both the population were planted at both the locations in a reciprocal swap arrangement using randomized complete block design with three replicates. The data were recorded on monthly basis from June to December over two consecutive years (2015 and 2016). The swap reciprocated lemongrass populations from Quetta and Faisalabad exhibited differential growth patterns from their native counterparts thus showing flexibility among the populations. Enhanced tillering, root proliferation and increased dry shoot and root weight was observed in the Quetta population adapted in Faisalabad. However, Faisalabad population adapted in Quetta produced taller plants with longer roots, while tillering and number of leaves were greatly reduced in the Quetta adapted population as compared to its counterpart in Faisalabad. Tissue analysis for hydrogen peroxide (H2O2) and malondialdehyde (MDA) data revealed that both the native and adapted populations in Faisalabad accumulated greater H2O2 and MDA in summer months while Quetta population did so in the winter months, thus showing that summer months in Faisalabad and winter months in Quetta to be stressful for the populations in the respective locations. Both native and adapted populations in Quetta displayed dark green leaf color, which was accompanied by increased chlorophyll a and b contents in summer months in Quetta and winter months in Faisalabad, while carotenoids accumulation was greater in the season with high temperature in Faisalabad and chilling temperature in Quetta. Fitting regression equation and finding correlation between maximum and minimum temperatures and relative humidity (RH) revealed negative correlations of temperatures with growth, H2O2 and MDA at both the locations in native and adapted population, while positive correlation of chlorophylls and carotenoids at Quetta and negative ones at Faisalabad, while RH was regressed with none of these attributes (data not shown). This implied that temperature was a major determining factor in the adaptation of populations at either location based on flexibility in physiological adjustments at both the locations.

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Chilling stress and hydrogen peroxide accumulation in Chrysanthemum morifolium and Spathiphyllum lanceifolium . Involvement of chlororespiration

Cited by 13 publications

References 39 publications

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

How do vascular plants perform photosynthesis in extreme environments? An integrative ecophysiological and biochemical story

ALTERATIONS IN OXIDANTS AND PHOTOSYNTHETIC PIGMENTS AS POSSIBLE DETERMINANTS OF CROSS-LOCATIONAL ADAPTABILITY POTENTIAL IN TWO LEMONGRASS (Cymbopogon citratus) POPULATIONS

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