Membrane fluidity controls redox-regulated cold stress responses in cyanobacteria

Maksimov, Eugene G.; Mironov, Kirill S.; Trofimova, M. S.; Nechaeva, Natalia L.; Todorenko, D. A.; Klementiev, Konstantin E.; Tsoraev, Georgy V.; Tyutyaev, E. V.; Zorina, Anna; Feduraev, Pavel; Allakhverdiev, Suleyman I.; Paschenko, V.Z.

doi:10.1007/s11120-017-0337-3

Cited by 48 publications

(8 citation statements)

References 44 publications

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“…However, under extreme conditions plants may not be able to adapt to environmental disturbances, which results in severe damage to cell structures and also to proteins involved in the physiological metabolism ( DaMatta et al, 2018 ). In addition, antioxidant enzymes are highly dependent on protein functions and low temperatures can lead the proteins to reduce their activity and lower cellular fluidity ( Maksimov et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Selenium enhances chilling stress tolerance in coffee species by modulating nutrient, carbohydrates, and amino acids content

et al. 2022

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The effects of selenium (Se) on plant metabolism have been reported in several studies triggering plant tolerance to abiotic stresses, yet, the effects of Se on coffee plants under chilling stress are unclear. This study aimed to evaluate the effects of foliar Se application on coffee seedlings submitted to chilling stress and subsequent plant recovery. Two Coffea species, Coffea arabica cv. Arara, and Coffea canephora clone 31, were submitted to foliar application of sodium selenate solution (0.4 mg plant–1) or a control foliar solution, then on day 2 plants were submitted to low temperature (10°C day/4°C night) for 2 days. After that, the temperature was restored to optimal (25°C day/20°C night) for 2 days. Leaf samples were collected three times (before, during, and after the chilling stress) to perform analyses. After the chilling stress, visual leaf injury was observed in both species; however, the damage was twofold higher in C. canephora. The lower effect of cold on C. arabica was correlated to the increase in ascorbate peroxidase and higher content of starch, sucrose, and total soluble sugars compared with C. canephora, as well as a reduction in reducing sugars and proline content during the stress and rewarming. Se increased the nitrogen and sulfur content before stress but reduced their content during low temperature. The reduced content of nitrogen and sulfur during stress indicates that they were remobilized to stem and roots. Se supply reduced the damage in C. canephora leaves by 24% compared with the control. However, there was no evidence of the Se effects on antioxidant enzymatic pathways or ROS activity during stress as previously reported in the literature. Se increased the content of catalase during the rewarming. Se foliar supply also increased starch, amino acids, and proline, which may have reduced symptom expression in C. canephora in response to low temperature. In conclusion, Se foliar application can be used as a strategy to improve coffee tolerance under low-temperature changing nutrient remobilization, carbohydrate metabolism, and catalase activity in response to rewarming stress, but C. arabica and C. canephora respond differently to chilling stress and Se supply.

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Section: Discussionmentioning

confidence: 99%

Selenium enhances chilling stress tolerance in coffee species by modulating nutrient, carbohydrates, and amino acids content

et al. 2022

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“…3d; Dataset S4). We speculate here that this latter adaptation may be related to adaptation to lowesttemperature stress of SH_LA4330 (Dataset S5) (Maksimov et al, 2017;Jiang et al, 2018). Adaptation to high altitude involves the regulation of the flowering, including photoperiod and vernalization pathways, but through different genes in different populations, while cold stress and its consequence (adaptation in lipidation pathway) may be relevant for adaptation to the highest altitudes (SH_LA4330).…”

Section: Gene Regulatory Network Underlying Local Adaptation In S Chi...mentioning

confidence: 89%

Local adaptation to novel habitats and climatic changes in a wild tomato species via selective sweeps

Wei

Silva‐Arias

Tellier

2021

Preprint

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Positive Darwinian selection is the driving force underpinning local (in space) and temporal (in time) adaptation, and leaves footprints of selective sweeps at the underlying major genes. These two adaptive processes are classically considered independently, so that most genomic selection scans uncover only recent sweeps underpinning spatial adaptation. However, understanding if these adaptive processes are intermingled and share common genetic bases is crucial to predict a species evolutionary potential, for example in response to changing environmental conditions. We use whole genome data from six populations across three different habitats of the wild tomato species Solanum chilense, to 1) infer the past demographic history, and 2) search for genes under strong positive selection. We then correlate the demographic history, allele frequencies in space and time, the age of selection events and the reconstructed historical ecological distribution of the species over five main climatic periods spanning 150,000 years. We find evidence for several selective sweeps targeting regulatory networks involved in root hair development in low altitude, and response to photoperiod and vernalization in high altitude populations. These sweeps occur in a concerted fashion in a given regulatory gene network and only at particular time periods, thereby underpinning temporal local adaptation. These genes under positive selection provide subsequently the basis for spatial local adaptation to novel habitats when new ecological niches become available. Our results reveal the importance of jointly studying spatial and temporal adaptations in species during habitat colonization.

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“…Photosynthetic redox stress can be assumed to be the actual signal that is perceived by Hik33/NblS/(DspA) kinase during exposure to various stresses. As mentioned above, the redox state of the quinone pool reflects the fluidity status of the membrane [94]. The redox-sensitive transcriptional regulator PedR has been found to be reduced by thioredoxin and to be inactivated under HL conditions, which shows the existence of a relationship between gene expression and photosynthetic activity [161].…”

Section: Multiple Stresses Sharing Common Sensors And/or Transducersmentioning

confidence: 89%

“…Hik33 kinase also controls the responses to oxidative, osmotic and salt stress (see below), which suggests the possible existence of a common signal triggering gene induction in response to various stresses. It has been suggested that the oxidation status of the quinone pool, which was found to vary depending on the membrane fluidity during cold stress exposure, may be the common response signal to stressors affecting the membrane fluidity [94]. Under optimal growth conditions, the transcription of the hsp genes is repressed by HrcA, which binds to a conserved sequence called CIRCE.…”

Section: Heat Shockmentioning

confidence: 99%

Stress Signaling in Cyanobacteria: A Mechanistic Overview

Rachedi

Foglino

Latifi

2020

Life

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Cyanobacteria are highly diverse, widely distributed photosynthetic bacteria inhabiting various environments ranging from deserts to the cryosphere. Throughout this range of niches, they have to cope with various stresses and kinds of deprivation which threaten their growth and viability. In order to adapt to these stresses and survive, they have developed several global adaptive responses which modulate the patterns of gene expression and the cellular functions at work. Sigma factors, two-component systems, transcriptional regulators and small regulatory RNAs acting either separately or collectively, for example, induce appropriate cyanobacterial stress responses. The aim of this review is to summarize our current knowledge about the diversity of the sensors and regulators involved in the perception and transduction of light, oxidative and thermal stresses, and nutrient starvation responses. The studies discussed here point to the fact that various stresses affecting the photosynthetic capacity are transduced by common mechanisms.

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Membrane fluidity controls redox-regulated cold stress responses in cyanobacteria

Cited by 48 publications

References 44 publications

Selenium enhances chilling stress tolerance in coffee species by modulating nutrient, carbohydrates, and amino acids content

Selenium enhances chilling stress tolerance in coffee species by modulating nutrient, carbohydrates, and amino acids content

Local adaptation to novel habitats and climatic changes in a wild tomato species via selective sweeps

Stress Signaling in Cyanobacteria: A Mechanistic Overview

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