Chloroplast Retrograde Signaling System

Yurina, N. P.; Odintsova, M. S.

doi:10.1134/s1021443719040149

Cited by 11 publications

(8 citation statements)

References 40 publications

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“…Under stress conditions, chloroplast retrograde signals play a role in the activation of genes related to the photosynthetic apparatus (Crawford et al, 2017). However, under the conditions reported in this work, there was not a strong activation of different TFs involved in this pathway in any genotype (Yurina & Odintsova, 2019; Table S9). These results suggest that the differences in the activation of genes of the photosynthetic apparatus between genotypes may be controlled by other pathways or signals (i.e., metabolic signals; Crawford et al, 2017;Yurina & Odintsova, 2019).…”

Section: Discussionmentioning

confidence: 59%

Reduction of heat stress pressure and activation of photosystem II repairing system are crucial for citrus tolerance to multiple abiotic stress combination

Balfagón

Zandalinas

Oliveira

et al. 2022

Physiologia Plantarum

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Drought, heat and high irradiance are abiotic stresses that negatively affect plant development and reduce crop productivity. The confluence of these three factors is common in nature, causing extreme situations for plants that compromise their viability. Drought and heat stresses increase the saturation of the photosystem reaction centers, increasing sensitivity to high irradiance. In addition, these stress conditions affect photosystem II (PSII) integrity, alter redox balance of the electron transport chain and decrease the photosynthetic rate. Here, we studied the effect of the stress combinations on the photosynthetic apparatus of two citrus genotypes, Carrizo citrange (Citrus sinensis × Poncirus trifoliata) and Cleopatra mandarin (Citrus reshni). Results obtained showed that physiological responses, such as modulation of stomatal aperture and transpiration rate, aimed to reduce leaf temperature, are key to diminishing heat impact on photosynthetic apparatus and increasing tolerance to double and triple combinations of drought, high irradiance and high temperatures. By using transcriptomic and proteomic analyses, we have demonstrated that under these abiotic stress combinations, Carrizo plants were able to increase expression of genes and proteins related to the photosystem repairing machinery (which better maintained the integrity of PSII) and other components of the photosynthetic apparatus. Our findings reveal crucial physiological and genetic responses in citrus to increase tolerance to the combination of multiple abiotic stresses that could be the basis for breeding programs that ensure a sustainable citrus production.

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Section: Discussionmentioning

confidence: 59%

Reduction of heat stress pressure and activation of photosystem II repairing system are crucial for citrus tolerance to multiple abiotic stress combination

Balfagón

Zandalinas

Oliveira

et al. 2022

Physiologia Plantarum

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“…Because most of the proteins needed for chloroplast function are nuclear‐encoded, tight regulation between the functional status of the chloroplast and nuclear gene transcription is needed. Signalling from the chloroplast to control nuclear transcription is referred to as retrograde signalling and is controlled by factors such as light, chloroplast gene expression, chloroplast protein import, tetrapyrrole biosynthesis, redox‐state and reactive oxygen species (Yurina & Odintsova, 2019). Biogenic retrograde signalling refers to signals from plastids during early steps of chloroplast biogenesis, to ensure the process is completed safely, whereas operational retrograde signals derive from fully active chloroplasts and adjust operation of the organelle in response to environmental conditions (Pogson et al ., 2008; Grübler et al ., 2021).…”

Section: Chloroplast Biogenesis and Division In Green Tissuesmentioning

confidence: 99%

Chloroplast development in green plant tissues: the interplay between light, hormone, and transcriptional regulation

et al. 2021

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Chloroplasts are best known for their role in photosynthesis, but they also allow nitrogen and sulphur assimilation, amino acid, fatty acid, nucleotide and hormone synthesis. How chloroplasts develop is therefore relevant to these diverse and fundamental biological processes, but also to attempts at their rational redesign. Light is strictly required for chloroplast formation in all angiosperms and directly regulates the expression of hundreds of chloroplast-related genes. Light also modulates the levels of several hormones including brassinosteriods, cytokinins, auxins and gibberellins, which themselves control chloroplast development particularly during early stages of plant development. Transcription factors such as GOLDENLIKE1&2 (GLK1&2), GATA NITRATE-INDUCIBLE CARBON METABOLISM-INVOLVED (GNC) and CYTOKININ-RESPONSIVE GATA FACTOR 1 (CGA1) act downstream of both light and phytohormone signalling to regulate chloroplast development. Thus, in green tissues transcription factors, light signalling and hormone signalling form a complex network regulating the transcription of chloroplast-and photosynthesis-related genes to control the development and number of chloroplasts per cell. We use this conceptual framework to identify points of regulation that could be harnessed to modulate chloroplast abundance and increase photosynthetic efficiency of crops, and to highlight future avenues to overcome gaps in current knowledge.

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“…They were probably biogenic signals whose main member was protein GUN1 (Genome UNco-pled1) located in the chloroplasts and responsible for homeostasis of plastid proteins. GUN1 is assumed to generate and transduce an unknown signal activating TF ABI4 that subsequently down-regulates expression of nuclear photosynthetic genes [81,82]. GUN1 is believed to integrate numerous plastid signals related to the state of tetrapyrroles, chlETC, and redox state of plastids as a whole.…”

Section: Lightmentioning

confidence: 99%

“…Together with other components of ETC, AOX is considered to participate in oxidation of the excess reducing agents transported by means of different shuttle mechanisms from chloroplasts to mitochondria [73,74]. ROS, redox status of ETC components (mainly, plastoquinones, PQ), and redox-active molecules of plastidal stroma (thioredoxin and glutathione), as well as intermediates of tetrapyrrole biosynthesis, act as signal molecules of plastid retrograde pathways controlling expression of nuclear target genes, including components of mitochondrial respiration [81,82,88].…”

Section: Lightmentioning

confidence: 99%

“…Recent results suggest that mitochondrial retrograde signal pathways are related to the network of cell signals' transduction and can integrate information from several sources, including chloroplast, and AOX actively participates in the maintenance of cell signaling and interaction between chloroplasts and mitochondria. Key TFs involved in regulation of AtАОХ1а expression (ABI4, ANAC013, ANAC017, WRKY40, and WRKY63) are components of plastid retrograde signaling [12,34,82]. The overexpression of ANAC017 improved the expression of АОХ but reduced the expression of the genes encoding chloroplast proteins, including LHCB [34].…”

Section: Lightmentioning

confidence: 99%

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Signal Pathways for Regulation of Plant Alternative Oxidase Genes’ Expression

Гармаш

2022

Russ J Plant Physiol

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This review deals with important issues in regulation of terminal alternative oxidase (AOX) of plant mitochondria, which are currently investigated and discussed. AOX ensures electron transport along the alternative nonphosphorylating cyanide-resistant pathway in mitochondrial ETC and plays an important role in the maintenance of redox balance in the cell and defense against stress. Principal results concerning AOX signaling were obtained in the works dealing with expression of the АОХ1а gene of Arabidopsis thaliana (AtAOX1a). Reports about АОХ expression in different plant species were analyzed. Mechanisms of transcriptional and posttranscriptional control over expression of АОХ genes were described. The role of some cis-regulatory elements of AtАОХ1а promoter and related transcription factors was considered. It was shown that transduction of the signal causing expression of АОХ genes may follow anterograde and retrograde pathways. Information about mitochondrial retrograde regulation of AOX and ROS-dependent and ROS-independent signal pathways of induction of АОХ expression is given. A hypothetic sequence of signal events of light induction of АОХ1а expression in wheat leaf cell in the course of greening was worked out. Interactions between AOX signaling and hormonal signal pathways, as well as induction of АОХ by the signals of plastid origin, were described. In conclusion, it was highlighted that AOX is integrated into the common signal pathway of the cell and acts as a target and a regulator of signal events.

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Chloroplast Retrograde Signaling System

Cited by 11 publications

References 40 publications

Reduction of heat stress pressure and activation of photosystem II repairing system are crucial for citrus tolerance to multiple abiotic stress combination

Reduction of heat stress pressure and activation of photosystem II repairing system are crucial for citrus tolerance to multiple abiotic stress combination

Chloroplast development in green plant tissues: the interplay between light, hormone, and transcriptional regulation

Signal Pathways for Regulation of Plant Alternative Oxidase Genes’ Expression

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