Soluble sugars

Rosa, Mariana; Prado, Carolina; Podazza, Griselda; Interdonato, Roque; González, Juan Antonio Suarez; Hilal, Mirna; Prado, Fernando Eduardo

doi:10.4161/psb.4.5.8294

Cited by 682 publications

(173 citation statements)

References 96 publications

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“…In agreement with our results, many reports indicated that stress tolerant plants accumulate larger amounts of protective metabolites, such as soluble sugars and polyols, under adverse conditions [40, 44]. Rosa et al [49] also found that sucrose and hexoses upregulate growth-related genes, while downregulating stress-related genes. This dual response likely assures proper growth under unfavorable conditions in R. stricta .…”

Section: Resultssupporting

confidence: 93%

Analysis of transcriptional response to heat stress in Rhazya stricta

et al. 2016

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BackgroundClimate change is predicted to be a serious threat to agriculture due to the need for crops to be able to tolerate increased heat stress. Desert plants have already adapted to high levels of heat stress so they make excellent systems for identifying genes involved in thermotolerance. Rhazya stricta is an evergreen shrub that is native to extremely hot regions across Western and South Asia, making it an excellent system for examining plant responses to heat stress. Transcriptomes of apical and mature leaves of R. stricta were analyzed at different temperatures during several time points of the day to detect heat response mechanisms that might confer thermotolerance and protection of the plant photosynthetic apparatus.ResultsBiological pathways that were crosstalking during the day involved the biosynthesis of several heat stress-related compounds, including soluble sugars, polyols, secondary metabolites, phenolics and methionine. Highly downregulated leaf transcripts at the hottest time of the day (40–42.4 °C) included genes encoding cyclin, cytochrome p450/secologanin synthase and U-box containing proteins, while upregulated, abundant transcripts included genes encoding heat shock proteins (HSPs), chaperones, UDP-glycosyltransferase, aquaporins and protein transparent testa 12. The upregulation of transcripts encoding HSPs, chaperones and UDP-glucosyltransferase and downregulation of transcripts encoding U-box containing proteins likely contributed to thermotolerance in R. stricta leaf by correcting protein folding and preventing protein degradation. Transcription factors that may regulate expression of genes encoding HSPs and chaperones under heat stress included HSFA2 to 4, AP2-EREBP and WRKY27.ConclusionThis study contributed new insights into the regulatory mechanisms of thermotolerance in the wild plant species R. stricta, an arid land, perennial evergreen shrub common in the Arabian Peninsula and Indian subcontinent. Enzymes from several pathways are interacting in the biosynthesis of soluble sugars, polyols, secondary metabolites, phenolics and methionine and are the primary contributors to thermotolerance in this species.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-016-0938-6) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 93%

Analysis of transcriptional response to heat stress in Rhazya stricta

et al. 2016

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“…Moreover, one of the most common acclimation mechanisms related to freezing tolerance is the accumulation of osmo-active compounds, a mechanism that is induced by drought and cold exposure. Soluble sugars form an important part of these osmo-active molecules and are furthermore involved in various metabolic events and can act as signal molecules regulating gene expression and protein activity, especially those involved in photosynthesis, sucrose metabolism and osmolyte synthesis [9]. …”

Section: Introductionmentioning

confidence: 99%

Differential Protein Expression in Response to Abiotic Stress in Two Potato Species: Solanum commersonii Dun and Solanum tuberosum L.

Folgado

Panis

Sergeant³

et al. 2013

IJMS

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Better knowledge on responses to dehydration stress could help to improve the existing cryopreservation protocols for potato, since plant tissues processed for cryopreservation are often submitted to similar in vitro stress conditions. Cryopreservation (the best method of conservation for vegetatively propagated plants) of potato still needs to be standardized to make it available and to conserve the wide diversity of this crop. In the present work, the response to osmotic stress and chilling temperature was investigated in two potato species, Solanum tuberosum and its relative, frost-tolerant S. commersonii. After 14 days of exposure, different growth parameters, such as shoot length and number of leaves, were measured. Furthermore, differentially abundant proteins were identified after performing 2-fluorescence difference gel electrophoresis (2-DIGE) experiments, and soluble carbohydrates were analyzed by High Performance Anion Exchange Chromatography with Pulsed Amperometric Detection (HPAEC-PAD). The results show different responses in both species depending on the stress treatment. Focusing on the differences in growth parameters during the treatments, Solanum commersonii seems to be more affected than S. tuberosum cv. Désirée. At the molecular level, there are some differences and similarities between the two potato species studied that are dependent on the type of stressor.

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“…Suc, Fru and Glu are three main forms of soluble sugars in plants (Rosa et al, 2009). In the hypocotyls of radish sprouts, the concentration of Suc was the highest (approximate 13 mg/g FW), followed by Fru (approximate 10 mg/g FW), with relatively low concentration in Glu (approximate 5 mg/g FW) detected ( Figure 3A ).…”

Section: Resultsmentioning

confidence: 99%

Increased Sucrose in the Hypocotyls of Radish Sprouts Contributes to Nitrogen Deficiency-Induced Anthocyanin Accumulation

Chen

2016

Front. Plant Sci.

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Effects of nitrogen (N) deficiency and sucrose (Suc) addition on regulation of anthocyanin biosynthesis and their relationship were investigated in this study. Radish sprouts subjected to N deficiency had 50% higher anthocyanin accumulation than when grown in Hoagland solution (a nutrient medium with all macronutrients). The contents of endogenous soluble sugars (Suc, fructose, and glucose) in the hypocotyls were also markedly increased by N limitation, with Suc showing the highest increase. Inhibition of carbohydrate biosynthesis by addition of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) also eliminated N deficiency-induced anthocyanin accumulation. The latter was further supported by the expression of anthocyanin biosynthesis related genes and decreased activities of nitrate reductase in the presence of Suc. Together our results indicate that N deficiency-induced anthocyanin accumulation was, at least partly, dependent on the increase of the soluble sugar, especially Suc. This work is the first comprehensive study on relationship between N deficiency and sugar content on anthocyanin accumulation in the hypocotyls of radish sprouts.

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Soluble sugars

Cited by 682 publications

References 96 publications

Analysis of transcriptional response to heat stress in Rhazya stricta

Analysis of transcriptional response to heat stress in Rhazya stricta

Differential Protein Expression in Response to Abiotic Stress in Two Potato Species: Solanum commersonii Dun and Solanum tuberosum L.

Increased Sucrose in the Hypocotyls of Radish Sprouts Contributes to Nitrogen Deficiency-Induced Anthocyanin Accumulation

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