Energy dependant plant stress acclimation

Dobrotă, Cristina

doi:10.1007/s11157-006-0012-1

Cited by 32 publications

(12 citation statements)

References 32 publications

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“…It was noteworthy that both Gly and ATP up-regulated the genes encoding the pyridoxal-5\′-phosphate-dependent enzyme (PRPP) and haloacid dehalogenase-like hydrolase (HAD), which were repressed by DeOGlc + IAc ( Supplementary Table S3). PRPP is an essential participant in salvage pathways for ATP regeneration 21 ; and the HAD superfamily may increase inorganic phosphate (Pi) for pyruvate and ATP production 22 . These results agree with the 2-fold reduction in ATP decline induced by Gly after fruit detachment (Fig.…”

Section: Discussionmentioning

confidence: 99%

Insights into the regulation of molecular mechanisms involved in energy shortage in detached citrus fruit

Romero

Alférez

Establés-Ortíz

et al. 2020

Sci Rep

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Harvested fruit undergo carbon and energy deprivation. However, the events underlying this energy-related stress in detached fruit and their involvement in cell damage have not yet been elucidated. We showed that supplementing detached sweet oranges with additional carbon or energy sources reduced peel damage, while inhibitors of energy metabolism increased it. We investigated the effect of an exogenous source of carbon (glycerol), energy (ATP), and an inhibitor of energy metabolism 2-deoxy-D-glucose (DeOGlc) + sodium iodoacetate (IAc), on the transcriptome of harvested fruit flavedo (outer peel part). ATP and Gly induced common, but also specific, alternative modes of energy metabolism by reducing the stress caused by energy shortage. They also induced shifts in energy metabolism that led to the production of the intermediates required for plant defense secondary metabolites to form. ATP and Gly triggered changes in the expression of the genes involved in cell lesion containment through a defined pathway involving hormones and redox-mediated signaling. DeOGlc + IAc had a contrasting effect on some of these mechanisms. These chemicals altered the biological processes related to membrane integrity and molecular mechanisms involving reactive oxygen species (ROS) production, and lipid and protein degradation.

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Section: Discussionmentioning

confidence: 99%

Insights into the regulation of molecular mechanisms involved in energy shortage in detached citrus fruit

Romero

Alférez

Establés-Ortíz

et al. 2020

Sci Rep

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“…In plants subjected to CA, to enhance adaptability of plant to low temperature, high levels of sugars and ATP (and other energy carriers) must be timely used to synthase COR proteins, lipids and membrance compositons, and to further promote cell membrane transport and structural rearrangement (Dobrota, 2006; Fristedt et al, 2015). In this study, such marker reflecting ATP requirement in the energy homeostasis system was the up-regulation of a variety of energy carrier proteins such as 91.4-fold ATPUMP5 (c19814.graph_c0), 9-fold ATP/GTP-binding protein (emb1579, c38770.graph_c0), and 32.2-fold ATBT1 (c47416.graph_c0) during CA (Supplementary Table S3 in Supplementary Material), which were involved in energy transfer.…”

Section: Discussionmentioning

confidence: 99%

“…to offset the potential energy cirisis during CA (Huner et al, 1998; Dobrota, 2006). Of particular interest in the context of energy supplies is switching energy metabolism.…”

Section: Discussionmentioning

confidence: 99%

Insights from the Cold Transcriptome and Metabolome of Dendrobium officinale: Global Reprogramming of Metabolic and Gene Regulation Networks during Cold Acclimation

Chen

et al. 2016

Front. Plant Sci.

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Plant cold acclimation (CA) is a genetically complex phenomenon involving gene regulation and expression. Little is known about the cascading pattern of gene regulatroy network and the link between genes and metabolites during CA. Dendrobium officinale (DOKM) is an important medicinal and ornamental plant and hypersensitive to low temperature. Here, we used the large scale metabolomic and transcriptomic technologies to reveal the response to CA in DOKM seedlings based on the physiological profile analyses. Lowering temperature from 4 to –2°C resulted in significant increase (P < 0.01) in antioxidant activities and electrolyte leakage (EL) during 24 h. The fitness CA piont of 0°C and control (20°C) during 20 h were firstly obtained according to physiological analyses. Subsequently, massive transcriptome and metabolome reprogramming occurred during CA. The gene to metabolite network demonstrated that the CA associated processes are highly energy demanding through activating hydrolysis of sugars, amino acids catabolism and citrate cycle. The expression levels of 2,767 genes were significantly affected by CA, including 153-fold upregulation of CBF transcription factor, 56-fold upregulation of MAPKKK16 protein kinase. Moreover, the gene interaction and regulation network analysis revealed that the CA as an active process, was regulated at the transcriptional, post-transcriptional, translational and post-translational levels. Our findings highligted a comprehensive regulatory mechanism including cold signal transduction, transcriptional regulation, and gene expression, which contributes a deeper understanding of the highly complex regulatory program during CA in DOKM. Some marker genes identified in DOKM seedlings will allow us to understand the role of each individual during CA by further functional analyses.

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“…The reduction in water intake by plants results in a slowing down of their metabolism (Hsiao 1973) and a reorganization of their energy resources geared to survival (Dobrota 2006). In the Mediterranean region, periods of drought are accompanied by high temperatures and high irradiance in summer (Aschmann 1973; Gasith and Resh 1999;Tsakiris et al 2007;Gratani et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Photosynthesis, stomatal conductance and terpene emission response to water availability in dry and mesic Mediterranean forests

Llusià

Roahtyn

Yakir

et al. 2015

Trees

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Water stress results in a reduction of the metabolism of plants and in a reorganization of their use of resources geared to survival. In the Mediterranean region, periods of drought accompanied by high temperatures and high irradiance, occur in summer. Plants have developed various mechanisms to survive in these conditions by resisting, tolerating or preventing stress. We used three typical Mediterranean tree species in Israel, Pinus halepensis L., Quercus calliprinos and Quercus ithaburensis Webb, as models for studying some of these adaptive mechanisms. We measured their photosynthetic rates (A), stomatal conductance (gs), and terpene emission rates during spring and summer in a geophysical gradient from extremely dry to mesic from Yatir (south, arid) to Birya (north, moist) with intermediate conditions in Solelim. A and gs of P. halepensis were three fold higher in Birya than in Yatir where they remained very low both seasons. Quercus species presented 2-3 fold higher A and gs but with much more variability between seasons, especially for Q. ithaburensis with A and gs that decreased 10-30 fold from spring to summer. Terpene emission rates for pine were not different regionally in spring but they were 5-8 fold higher in Manuscript Click here to download Manuscript: Israel A gs Emiss spring summer 2013 rev 19 may 2015 Trees JP 10 aug 015-jp 13 aug.docx Click here to view linked References Birya than in Yatir in summer (P < 0.05). Higher emissions were also observed in Solelim for the drought resistant Q. ithaburensis (P < 0.001) but not for Q. calliprinos. -Pinene followed by limonene and 3carene were the dominant terpenes. Warmer summer conditions result in increased Terpene emission rates except under severe drought, in which case they strongly decrease.

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Energy dependant plant stress acclimation

Cited by 32 publications

References 32 publications

Insights into the regulation of molecular mechanisms involved in energy shortage in detached citrus fruit

Insights into the regulation of molecular mechanisms involved in energy shortage in detached citrus fruit

Insights from the Cold Transcriptome and Metabolome of Dendrobium officinale: Global Reprogramming of Metabolic and Gene Regulation Networks during Cold Acclimation

Photosynthesis, stomatal conductance and terpene emission response to water availability in dry and mesic Mediterranean forests

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