Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress

Devkar, Vikas; Thirumalaikumar, Venkatesh P.; Gong, Xue; Vallarino, José G.; Turečková, Veronika; Strnad, Miroslav; Fernie, Alisdair R.; Hoefgen, Rainer; Mueller‐Roeber, Bernd; Balazadeh, Salma

doi:10.1111/nph.16247

Cited by 54 publications

(39 citation statements)

References 98 publications

(189 reference statements)

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“…In grapes, VvWRKY30 was shown to have a positive role in stress signaling [130]. Knockout plants of the NAC transcription factor (SlTAF) showed an increased sensitivity to salt stress, indicating a role of this NAC in signal transduction of salinity stress [131]. Overexpressing ABA-responsive element binding factors of sweet potato (IbABF4) in transgenic Arabidopsis seedlings enhanced salt and drought tolerance [132].…”

Section: Signal Transduction and Stress-induced Gene Expressionmentioning

confidence: 99%

Root Involvement in Plant Responses to Adverse Environmental Conditions

et al. 2020

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Climate change is altering the environment in which plants grow and survive. An increase in worldwide Earth surface temperatures has been already observed, together with an increase in the intensity of other abiotic stress conditions such as water deficit, high salinity, heavy metal intoxication, etc., generating harmful conditions that destabilize agricultural systems. Stress conditions deeply affect physiological, metabolic and morphological traits of plant roots, essential organs for plant survival as they provide physical anchorage to the soil, water and nutrient uptake, mechanisms for stress avoidance, specific signals to the aerial part and to the biome in the soil, etc. However, most of the work performed until now has been mainly focused on aerial organs and tissues. In this review, we summarize the current knowledge about the effects of different abiotic stress conditions on root molecular and physiological responses. First, we revise the methods used to study these responses (omics and phenotyping techniques). Then, we will outline how environmental stress conditions trigger various signals in roots for allowing plant cells to sense and activate the adaptative responses. Later, we discuss on some of the main regulatory mechanisms controlling root adaptation to stress conditions, the interplay between hormonal regulatory pathways and the global changes on gene expression and protein homeostasis. We will present recent advances on how the root system integrates all these signals to generate different physiological responses, including changes in morphology, long distance signaling and root exudation. Finally, we will discuss the new prospects and challenges in this field.

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Section: Signal Transduction and Stress-induced Gene Expressionmentioning

confidence: 99%

Root Involvement in Plant Responses to Adverse Environmental Conditions

et al. 2020

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“…Excess salt may activate a wide range of physiological and biochemical adjustments to support plant growth and cellular functions. These include the effective compartmentalization of Na + in vacuoles by specific transporters, long-distance ion transport from roots to leaves and stems, alterations in leaf or root morpho-anatomical structures, as well as the production of osmotically active compounds and the accumulation of plant hormones and other signaling molecules (Shabala, 2013;Mellidou et al, 2016;Devkar et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptomics and Metabolomics Reveal an Intricate Priming Mechanism Involved in PGPR-Mediated Salt Tolerance in Tomato

et al. 2021

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Plant-associated beneficial strains inhabiting plants grown under harsh ecosystems can help them cope with abiotic stress factors by positively influencing plant physiology, development, and environmental adaptation. Previously, we isolated a potential plant growth promoting strain (AXSa06) identified as Pseudomonas oryzihabitans, possessing 1-aminocyclopropane-1-carboxylate deaminase activity, producing indole-3-acetic acid and siderophores, as well as solubilizing inorganic phosphorus. In this study, we aimed to further evaluate the effects of AXSa06 seed inoculation on the growth of tomato seedlings under excess salt (200 mM NaCl) by deciphering their transcriptomic and metabolomic profiles. Differences in transcript levels and metabolites following AXSa06 inoculation seem likely to have contributed to the observed difference in salt adaptation of inoculated plants. In particular, inoculations exerted a positive effect on plant growth and photosynthetic parameters, imposing plants to a primed state, at which they were able to respond more robustly to salt stress probably by efficiently activating antioxidant metabolism, by dampening stress signals, by detoxifying Na+, as well as by effectively assimilating carbon and nitrogen. The primed state of AXSa06-inoculated plants is supported by the increased leaf lipid peroxidation, ascorbate content, as well as the enhanced activities of antioxidant enzymes, prior to stress treatment. The identified signatory molecules of AXSa06-mediated salt tolerance included the amino acids aspartate, threonine, serine, and glutamate, as well as key genes related to ethylene or abscisic acid homeostasis and perception, and ion antiporters. Our findings represent a promising sustainable solution to improve agricultural production under the forthcoming climate change conditions.

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“…Three to ten T 1 plants per line were cultivated under two types of semi-controlled conditions. (1) In "experiment 1", plants were grown in a glasshouse as previously reported 86 . Plants in the "experiment 1" were exposed to low light (< 450 µmol photons m −2 s −1 of Photosynthetically active radiation-PAR) and limited soil (i.e.…”

Section: Resultsmentioning

confidence: 99%

Multi-gene metabolic engineering of tomato plants results in increased fruit yield up to 23%

Vallarino

Kubiszewski-Jakubiak

Ruf

et al. 2020

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The capacity to assimilate carbon and nitrogen, to transport the resultant sugars and amino acids to sink tissues, and to convert the incoming sugars and amino acids into storage compounds in the sink tissues, are key determinants of crop yield. Given that all of these processes have the potential to co-limit growth, multiple genetic interventions in source and sink tissues, plus transport processes may be necessary to reach the full yield potential of a crop. We used biolistic combinatorial co-transformation (up to 20 transgenes) for increasing C and N flows with the purpose of increasing tomato fruit yield. We observed an increased fruit yield of up to 23%. To better explore the reconfiguration of metabolic networks in these transformants, we generated a dataset encompassing physiological parameters, gene expression and metabolite profiling on plants grown under glasshouse or polytunnel conditions. A Sparse Partial Least Squares regression model was able to explain the combination of genes that contributed to increased fruit yield. This combinatorial study of multiple transgenes targeting primary metabolism thus offers opportunities to probe the genetic basis of metabolic and phenotypic variation, providing insight into the difficulties in choosing the correct combination of targets for engineering increased fruit yield.

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Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress

Cited by 54 publications

References 98 publications

Root Involvement in Plant Responses to Adverse Environmental Conditions

Root Involvement in Plant Responses to Adverse Environmental Conditions

Comparative Transcriptomics and Metabolomics Reveal an Intricate Priming Mechanism Involved in PGPR-Mediated Salt Tolerance in Tomato

Multi-gene metabolic engineering of tomato plants results in increased fruit yield up to 23%

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