Integrated omics analysis reveals the norisoprenoid responses in Vitis vinifera L. cv. Cabernet Sauvignon berries to abscisic acid and synthetic auxin
Ontology highlight
ABSTRACT:
ORGANISM(S): Vitis vinifera
PROVIDER: GSE150343 | GEO | 2020/05/12
REPOSITORIES: GEO
Similar Datasets
Project description:Auxin treatment of grape (Vitis vinifera L.) berries delays ripening by inducing changes in gene expression and cell wall metabolism and could combat some deleterious climate change effects. Auxins are inhibitors of grape berry ripening and their application may be useful to delay harvest to counter effects of climate change. However, little is known about how this delay occurs. The expression of 1892 genes was significantly changed compared to the control during a 48 h time-course where the auxin 1-naphthaleneacetic acid (NAA) was applied to pre-veraison grape berries. Principal component analysis showed that the control and auxin-treated samples were most different at 3 h post-treatment when approximately three times more genes were induced than repressed by NAA. There was considerable cross-talk between hormone pathways, particularly between those of auxin and ethylene. Decreased expression of genes encoding putative cell wall catabolic enzymes (including those involved with pectin) and increased expression of putative cellulose synthases indicated that auxins may preserve cell wall structure. This was confirmed by immunochemical labelling of berry sections using antibodies that detect homogalacturonan (LM19) and methyl-esterified homogalacturonan (LM20) and by labelling with the CMB3a cellulose-binding module. Comparison of the auxin-induced changes in gene expression with the pattern of these genes during berry ripening showed that the effect on transcription is a mix of changes that may specifically alter the progress of berry development in a targeted manner and others that could be considered as non-specific changes. Several lines of evidence suggest that cell wall changes and associated berry softening are the first steps in ripening and that delaying cell expansion can delay ripening providing a possible mechanism for the observed auxin effects.
2020-05-22 | GSE132262 | GEO
Project description:Primary and secondary metabolism in grape berries is under the control of complex interactions among environmental conditions, genotypes, and management practices. To obtain an interpretation from the view of transcriptome on distinct metabolite accumulation between ecologically different regions in China, next-generation sequencing technology was performed on E-L 31, 35, and 38 stages of Cabernet Sauvignon grape berries from Changli (CL, eastern) and Gaotai (GT, western). The transcript abundance of epoxycarotenoid dioxygenase and xanthoxin dehydrogenase required for ABA biosynthesis was significantly higher in the GT berries at E-L 35 and 38 stages compared with the CL berries, which may explain the relatively short maturation period of berries in the western region. Some genes required for carbohydrate metabolism, such as hexose transporter, L-idonate dehydrogenase, and phosphoenolpyruvate carboxylase, were significantly up-regulated in the CL berries in relation to the GT berries, which positively correlated with the sugar and organic acid accumulations. Pathway enrichment analysis of differentially expressed genes revealed that the CL berries had higher levels of phenylpropanoid biosynthesis at E-L 38 stage than the GT berries, which may relate to the quick fading of the GT wines because of weak co-pigmentation. This observation lays a foundation for further study concerning the molecular basis for environmental effects on berry quality formation.
2014-11-21 | GSE63512 | GEO
Project description:To obtain an interpretation from the view of transcriptome on distinct metabolite accumulation between ecologically different regions in China, next-generation sequencing technology was performed on E-L 31, 35 and 38 stages of Cabernet Sauvignon grape berries from Changli (CL, eastern) and Gaotai (GT, western). The transcript abundance of epoxycarotenoid dioxygenase and xanthoxin dehydrogenase required for ABA biosynthesis was significantly higher in the GT berries at E-L 35 and 38 stages compared with the CL berries, which may explain the relatively short maturation period of berries in the western region. Some genes required for carbohydrate metabolism, such as hexose transporter, L-idonate dehydrogenase and phosphoenolpyruvate carboxylase, were significantly up-regulated in the CL berries in relative to the GT berries, which positively correlated with the sugar and organic acid accumulations. Pathway enrichment analysis of differentially expressed genes revealed that the CL berries had higher levels of phenylpropanoid biosynthesis at E-L 38 stage than the GT berries, which may relate to the quick fading of the GT wines because of weak co-pigmentation. cDNA libraries generated from three developmental stages (E-L 31, 35 and 38) of Cabernet Sauvignon grape berries from Changli (CL, eastern) and Gaotai (GT, western) in China were sequenced using Illumina HiSeq 2000.
2014-11-21 | E-GEOD-63512 | biostudies-arrayexpress
Project description:Basal leaf removal has been widely practiced to increase cluster sunlight exposure, control berry rot and eventually improve grape berry quality. Early leaf removal performed in cool region appeared to benefit the accumulation of norisoprenoids and monoterpenes. However, effects of this canopy management and leaf moving on volatile profiles and transcriptome of grape berry in warm region characterized with strong sunshine and arid climate were paid less attention. To cope with multiple possible effects caused by global warming, researches in warm region are urgently needed to provide a guide for adjusting the sunlight exposure treatment to adapt the climate change.In Manas county of Xinjiang province, sunlight exposure treatments performed in this study resulted in decreased β-carotene and lutein, which mainly responsible for the reduced norisoprenoids in ripening grapes. Substrate competition due to the up-regulation of VvTPS-a and VvNCED3 may contribute to the decreased concentration of monoterpenes in exposed berries. The notable increased C6 alcohols in the grape berries treated by leaf removal applied at veraison (LR-V), was mainly attribute to the enhanced substrate availability of linoleic acid and linolenic acid together with the higher expression of VvLOXO and VvADH1. Free C6 aldehyde was reduced by half leaf removal applied at veraison (HLR-V), leaf moving at veraison (LM-V) and leaf removal applied at berry pepper-corn size (LR-PS). Moreover, transcriptomic analysis indicated that both LR-V and LM-V treated grape berry implemented multiple stress-mitigation strategies to acclimate the improved sunlight exposure. Interestingly, photosynthesis-related genes in grape berry were primarily up-regulated by LR-V as a consequence of carbohydrate source removal rather than improved sunlight exposure. Weighted gene co-expression network analysis (WGCNA) suggested that the genes encoding malate synthase and 3-oxoacyl-(acyl carrier protein) reductase show a significant correlation with the accumulation of C6 alcohol.
2018-10-14 | GSE121146 | GEO
Project description:Studying the effect of varying durations (1, 7 and 14 days) of locally applied heat stress on grape berries at three developmental stages (middle green, veraison and middle ripening). Among various environmental factors, temperature is a major regulator affecting plant growth, development and fruit composition. Reproductive development of grapevine and berry composition, are both highly influenced by temperature. To date, the molecular mechanisms involved in grapevine berries tolerance to high temperatures (HS) are poorly understood. Although recent data addressed the consequences on berry development of elevated temperatures applied at the whole plant level, the present work particularly focuses on the fruit responses triggered by direct exposure to heat stress. In the context of climate change, this work focused on microclimate effect is of particular interest to better understand the consequences of leaf removal (a common viticultural practice) on berry development. HS (+ 8°C) was locally applied to clusters from Cabernet Sauvignon fruiting cuttings at three different developmental stages (middle green, véraison and middle ripening). Samples were collected 1, 7 and 14 days after treatment and used for metabolic and transcriptomic analyses. The results showed dramatic and specific biochemical and transcriptomic changes in heat exposed berries, depending on the developmental stage and the stress duration. When applied at the herbaceous stage, HS delayed the onset of véraison. Heating also strongly altered the berry concentration of amino acids and organic acids (e.g. PHE, GABA, and malate) and decreased the anthocyanin content at maturity. These physiological alterations could be partly explained by the deep remodelling of transcriptome in heated berries. More than 7000 genes were deregulated in at least one of the nine experimental conditions. The most affected processes belong to the categories “stress responses”, “protein metabolism” and “secondary metabolisms”, highlighting the intrinsic capacity of grape berries to perceive heat stress and to build adaptive responses. Additionally, important changes in processes related to “transport”, “hormone” and “transcription” might contribute to the postponing of véraison. Finally, opposite effects depending on heating duration were observed for genes encoding enzymes of the general phenylpropanoid pathway, suggesting that the HS-induced decrease in anthocyanin content may result from a combination of transcript abundance and product degradation.
2017-03-08 | GSE86551 | GEO
Project description:Light environments have long been known to influence grape (Vitis vinifera L.) berry development and biosynthesis of phenolic compounds, and ultimately affect wine quality. Here, the accumulation and compositional changes of hydroxycinnamic acids (HCAs) and flavonoids, as well as global gene expression were analyzed in Cabernet Sauvignon grape berries under sunlight exposure treatments at different phenological stages. Sunlight exposure did not consistently affect the accumulation of berry skin flavan-3-ol or anthocyanin among different seasons due to climatic variations, but increased HCA content significantly at véraison and harvest, and enhanced flavonol accumulation dramatically with its timing and severity degree trend. As in sunlight exposed berries, a highly significant correlation was observed between the expression of genes coding phenylalanine ammonia-lyase, 4-coumarate: CoA ligase, flavanone 3-hydroxylase and flavonol synthase family members and corresponding metabolite accumulation in the phenolic biosynthesis pathway, which may positively or negatively be regulated by MYB, bHLH, WRKY, AP2/EREBP, C2C2, NAC, and C2H2 transcription factors (TFs). Furthermore, some candidate genes required for auxin, ethylene and abscisic acid signal transductions were also identified which are probably involved in berry development and flavonoid biosynthesis in response to enhanced sunlight irradiation. Taken together, this study provides a valuable overview of the light-induced phenolic metabolism and transcriptome changes, especially the dynamic responses of TFs and signaling components of phytohormones, and contributes to the further understanding of sunlight-responsive phenolic biosynthesis regulation in grape berries.
2020-09-02 | GSE157347 | GEO
Project description:Transcriptional profiling comparing untreated berries (control) with berries treated with NAA (1-Naphthalene acetic acid, an auxin) at the preveraison stage. Two-condition experiment: control vs. treated. Comparisons were as follows: NAA-treated berries at 60 (days after full bloom (DAFB)) versus untreated berries at 60 DAFB (2 biological replicates, both dye-swapped), NAA-treated berries at 60 DAFB versus NAA-treated berries at 110 DAFB (2 biological replicates, only one dye-swapped), NAA-treated berries at 110 DAFB versus untreated berries at 110 DAFB (2 biological replicates, only one dye-swapped), and NAA-treated berries at 148 DAFB versus untreated berries at 110 DAFB (2 biological replicates, only one dye-swapped).
2012-11-21 | E-GEOD-37341 | biostudies-arrayexpress
Project description:Transcriptional profiling comparing untreated berries (control) with berries treated with NAA (1-Naphthalene acetic acid, an auxin) at the preveraison stage.
2012-11-21 | GSE37341 | GEO
Project description:Background: Grapevine berry, a nonclimacteric fruit, goes through three developmental stages, the last one called the ripening stage, when the berry changes color and dramatically increases in sugar. Flavors derived from terpenoid and fatty acid metabolism develop at the very end of this ripening stage. Whole-genome microarray analysis was used to assess the transcriptomic response of pulp and skin of Cabernet Sauvignon berries in the latter stages of ripening between 22 and 37 M-BM-0Brix. Grapevine berry, a nonclimacteric fruit, goes through three developmental stages, the last one called the ripening stage, when the berry changes color and dramatically increases in sugar. Flavors derived from terpenoid and fatty acid metabolism develop at the very end of this ripening stage. Whole-genome microarray analysis was used to assess the transcriptomic response of pulp and skin of Cabernet Sauvignon berries in the latter stages of ripening between 22 and 37 M-BM-0Brix. Results: There were approximatedly 18,000 transcripts whose abundance changed with M-BM-0Brix level and tissue type. There were very broad changes in many gene ontology (GO) categories involving metabolism, signaling and abiotic stress. GO categories reflecting tissue differences were overrepresentation in photoysynthesis, isoprenoid metabolism and pigment biosynthesis. A more detailed analysis of the interaction of the skin and pulp with M-BM-0Brix levels revealed that there were significantly higher abundances of transcripts changing with M-BM-0Brix level in the skin that were involved in ethylene signaling, isoprenoid and fatty acid metabolism. Many of these transcripts were peaking around the optimal fruit stage for flavor production. The transcript abundance of approximately two-thirds of the AP2/ERF Superfamily of transcription factors changed during these developmental stages. The transcript abundance of a unique clade of ERF6-type transcription factors had the largest changes and clustered with other genes involved in ethylene, senescence, and fruit flavor production including ACC oxidase, terpene synthases, and lipoxygenases. The transcript abundance of other important transcription factors (i.e. SPL, RIN, etc.) involved in the regulation of fruit ripening was also higher in the skin. Conclusions: A detailed analysis of the transcriptomic response of grapevine berries revealed that these berries went through massive changes in chemical signaling and metabolism in both the pulp and skin, particularly in the skin. The ethylene signaling pathway of this nonclimacteric fruit was significantly stimulated in the late stages of ripening when the production of transcripts for important flavor and aroma compounds were at their highest. Ethylene transcription factors known to play a role in leaf senescence also appear to play a role in fruit senescence. Ethylene may play a bigger role than previously thought in this non-climacteric fruit. Vitis vinifera L. cv. Cabernet Sauvignon (clone 8 scion on 1130 Paulsen rootstock) berries were harvested from J. Lohr Vineyards & Wines, Paso Robles, CA, USA. Whole-genome microarray analysis was used to assess the transcriptomic response of pulp and skin of berries in the latter stages of ripening between 22 and 37 M-BM-0Brix (2008 vintage).
2014-11-01 | E-GEOD-55302 | biostudies-arrayexpress
Project description:Light conditions significantly influence grape berry ripening and the accumulation of phenolic compounds, but the underlying molecular basis remains partially understood. Here, we applied integrated transcriptomics and pathway-level metabolomics analyses to investigate the effect of cluster bagging during various developmental stages on phenolic metabolism in Cabernet Sauvignon grapes. Bagging treatments had limited effects on berry quality attributes at harvest and did not consistently affect phenolic acid biosynthesis between seasons. Significantly elevated flavan-3-ol and flavonol contents were detected in re-exposed berries after bagging during early-developmental stages, while bagging after véraison markedly inhibited skin anthocyanin accumulation. Several anthocyanin derivatives and flavonol glycosides were identified as marker phenolic metabolites for distinguishing bagged and non-bagged grapes. Coordinated transcriptional changes in the light signaling components CRY2 and HY5/HYHs, transcription regulator MYBA1, and enzymes LAR, ANR, UFGT and FLS4, coincided well with light-responsive biosynthesis of the corresponding flavonoids. The activation of multiple hormone signaling pathways after both light exclusion and re-exposure treatments was inconsistent with the changes in phenolic accumulation, indicating a limited role of plant hormones in mediating light/darkness-regulated phenolic biosynthesis processes. Furthermore, gene-gene and gene-metabolite network analyses discovered that the light-responsive expression of genes encoding bHLH, MYB, WRKY, NAC, and MADS-box transcription factors, and proteins involved in genetic information processing and epigenetic regulation such as nucleosome assembly and histone acetylation, showed a high positive correlation with grape berry phenolic accumulation in response to different light regimes. Altogether, our findings provide novel insights into the understanding of berry phenolic biosynthesis under light/darkness and practical guidance for improving grape features.
2019-11-25 | GSE129916 | GEO