The roles of chloroplast membrane lipids in abiotic stress responses

Li, Jinlu; Liu, Luning; Meng, Qingwei; Hai, Fan; Sui, Na

doi:10.1080/15592324.2020.1807152

Cited by 29 publications

(18 citation statements)

References 137 publications

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“…Photosynthesis is an important physical and chemical process responsible for the production of higher energy plants, which may be influenced by ROS, leading to a loss in plant production [ 11 ]. Chloroplasts in mesophyll cells are the organelles most sensitive to salt stress [ 12 ]. With the increase of salt concentration, the structure of chloroplast begins to be damaged to varying degrees [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organs

Jiang

Liu

et al. 2021

BMC Plant Biol

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Background As damage to the ecological environment continues to increase amid unreasonable amounts of irrigation, soil salinization has become a major challenge to agricultural development. Melatonin (MT) is a pleiotropic signal molecule and indole hormone, which alleviates the damage of abiotic stress to plants. MT has been confirmed to eliminate reactive oxygen species (ROS) by improving the antioxidant system and reducing oxidative damage under adversity. However, the mechanism by which exogenous MT mediates salt tolerance by regulating the photosynthetic capacity and ion balance of cotton seedlings still remains unknown. In this study, the regulatory effects of MT on the photosynthetic system, osmotic modulators, chloroplast, and anatomical structure of cotton seedlings were determined under 0–500 μM MT treatments with salt stress induced by treatment with 150 mM NaCl. Results Salt stress reduces the chlorophyll content, net photosynthetic rate, stomatal conductance, intercellular CO2 concentration, transpiration rate, PSII photochemical efficiency, PSII actual photochemical quantum yield, the apparent electron transfer efficiency, stomata opening, and biomass. In addition, it increases non-photochemical quenching. All of these responses were effectively alleviated by exogenous treatment with MT. Exogenous MT reduces oxidative damage and lipid peroxidation by reducing salt-induced ROS and protects the plasma membrane from oxidative toxicity. MT also reduces the osmotic pressure by reducing the salt-induced accumulation of Na+ and increasing the contents of K+ and proline. Exogenous MT can facilitate stomatal opening and protect the integrity of cotton chloroplast grana lamella structure and mitochondria under salt stress, protect the photosynthetic system of plants, and improve their biomass. An anatomical analysis of leaves and stems showed that MT can improve xylem and phloem and other properties and aides in the transportation of water, inorganic salts, and organic substances. Therefore, the application of MT attenuates salt-induced stress damage to plants. Treatment with exogenous MT positively increased the salt tolerance of cotton seedlings by improving their photosynthetic capacity, stomatal characteristics, ion balance, osmotic substance biosynthetic pathways, and chloroplast and anatomical structures (xylem vessels and phloem vessels). Conclusions Our study attributes help to protect the structural stability of photosynthetic organs and increase the amount of material accumulation, thereby reducing salt-induced secondary stress. The mechanisms of MT-induced plant tolerance to salt stress provide a theoretical basis for the use of MT to alleviate salt stress caused by unreasonable irrigation, fertilization, and climate change.

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Section: Introductionmentioning

confidence: 99%

Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organs

Jiang

Liu

et al. 2021

BMC Plant Biol

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“…Research studies have established the presence of chloroplast lipids in photosynthetic membranes, however, few studies have evaluated the response of chloroplast lipids to light stress and how this may influence photosynthesis. When there are changes in content of chloroplast membrane lipids and unsaturated fatty acids, chloroplast and thylakoid membrane structure will be impacted (Li et al, 2020). Chloroplast damage tends to decrease net photosynthetic rate and delay plant growth.…”

Section: Relationship Of Plant Membrane Lipids To Light Stress and Ph...mentioning

confidence: 99%

“…Chloroplast damage tends to decrease net photosynthetic rate and delay plant growth. Under unfavorable conditions, maintaining chloroplast structural stability and minimizing damage of chloroplasts may contribute significantly to plant resistance to environmental stress (Li et al, 2020). Plants may resist abiotic stress and maintain membrane stability and function through changes in lipid composition.…”

Section: Relationship Of Plant Membrane Lipids To Light Stress and Ph...mentioning

confidence: 99%

“…Plants may resist abiotic stress and maintain membrane stability and function through changes in lipid composition. Specifically, alterations in the DGDG to MGDG ratio could modify chloroplast membrane stability (Li et al, 2020). Therefore, changes in lipid content in response to abiotic stress, such as light stress, could provide an adaptation strategy for plants under adverse conditions.…”

Section: Relationship Of Plant Membrane Lipids To Light Stress and Ph...mentioning

confidence: 99%

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Current Perspective Concerning the Potential Value of Chloroplast Lipidome in Assessing Moss Response to Abiotic Stress During Boreal Forest Regeneration

Callahan

Zhu

Thomas

2022

Front. For. Glob. Change

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Mosses play important roles in the regulation of environmental or metabolic conditions in boreal forest ecosystems. Sphagnum and feathermoss are the two main bryophytes found in boreal forest understory. Clearcut harvesting (common method of boreal forest regeneration) can expose understory vegetation to water and light stress. Water and light stress can significantly impact moss growth during boreal forest regeneration. Analysis of the membrane lipidome, photosynthetic parameters and pigments can be very effective in assessing moss response to abiotic stress following clearcut harvesting. Although lipidomics is commonly used in environmental stress assessment of plants, application to assess moss lipidome and stress response is very limited. Bryophytes may alter or remodel their membrane lipid composition to acclimate or adapt to environmental stressors. Thus, this perspective provides insights into how moss lipids may serve as useful biomarkers of moss stress response or adaptation to environmental stress during boreal forest regeneration following clearcut harvesting.

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“…Thus, the photoinhibition process begins to be observed [18,24,25]. Additionally, the accompanying burst of PSI production of reactive oxygen species damages proteins, membrane lipids, and thylakoids [26]. Attempts are made to increase the efficiency and stability of the photosynthesis process in plants and algae.…”

Section: Introductionmentioning

confidence: 99%

The Arabidopsis Accessions Selection Is Crucial: Insight from Photosynthetic Studies

Wójtowicz

Gieczewska

2021

IJMS

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Natural genetic variation in photosynthesis is strictly associated with the remarkable adaptive plasticity observed amongst Arabidopsis thaliana accessions derived from environmentally distinct regions. Exploration of the characteristic features of the photosynthetic machinery could reveal the regulatory mechanisms underlying those traits. In this study, we performed a detailed characterisation and comparison of photosynthesis performance and spectral properties of the photosynthetic apparatus in the following selected Arabidopsis thaliana accessions commonly used in laboratories as background lines: Col-0, Col-1, Col-2, Col-8, Ler-0, and Ws-2. The main focus was to distinguish the characteristic disparities for every accession in photosynthetic efficiency that could be accountable for their remarkable plasticity to adapt. The biophysical and biochemical analysis of the thylakoid membranes in control conditions revealed differences in lipid-to-protein contribution, Chlorophyll-to-Carotenoid ratio (Chl/Car), and xanthophyll cycle pigment distribution among accessions. We presented that such changes led to disparities in the arrangement of the Chlorophyll-Protein complexes, the PSI/PSII ratio, and the lateral mobility of the thylakoid membrane, with the most significant aberrations detected in the Ler-0 and Ws-2 accessions. We concluded that selecting an accession suitable for specific research on the photosynthetic process is essential for optimising the experiment.

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The roles of chloroplast membrane lipids in abiotic stress responses

Cited by 29 publications

References 137 publications

Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organs

Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organs

Current Perspective Concerning the Potential Value of Chloroplast Lipidome in Assessing Moss Response to Abiotic Stress During Boreal Forest Regeneration

The Arabidopsis Accessions Selection Is Crucial: Insight from Photosynthetic Studies

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