Ontology highlight
ABSTRACT:
PROVIDER: PRJNA927134 | ENA |
REPOSITORIES: ENA
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Project description:Resequencing of broomcorn millet
| PRJNA916977 | ENA
Project description:Purpose: The goals of this study was to provide genome-wide data to investigate the molecular mechanism of ABA regulation in many ripening related biological processes, including fruit color variation, antioxidant capacity, flavonoids biosynthesis and photosynthesis. Methods:By applying the next generation sequencing technology, we conducted a comparative analysis of exogenous ABA and NDGA effects on tomato fruit maturation. Results:The high throughput sequencing results showed that 25728 genes expressed across all three samples, and 10388 of them were identified as significantly differently expressed genes (DEGs). Exogenous ABA was found to enhance the transcription of genes in pigments metabolism, including carotenoids biosynthesis and chlorophyll degradation, whereas NDGA treatment inhibited these progresses. The results also revealed the crucial role of ABA in flavonoids synthesis and regulation of antioxidant system. Intriguingly, we also found that an inhibition of endogenous ABA significantly enhanced the transcriptional abundance of genes involved in fruit photosynthesis. Conclusions:next-generation sequencing enabled us to characterize the transcriptomes of tomato fruit treated with ABA and NDGA. By comparing these transcriptomes with control respectively, we observed that ABA could accelerate fruit maturation by positively regulating many genes related to ripening processes. Our study have turned spotlight on the pathways of fruit pigmentation, including carotenoid biosynthesis and chlorophyll metabolism. Exogenous ABA was able to up-regulate many genes in relation to the carotenoids accumulation and chlorophyll breakdown, thus promoting the color transition of tomato fruit. In addition, ABA has the potential to improve the genes related to antioxidant capacity, such as SODs, CATs, APXs, GSTs, GPXs, TrXs and PrxRs. Besides, the expression changes of genes involved in flavonoids biosynthesis after ABA exposure was striking, suggesting ABA could enhance the defense response by producing more secondary metabolite in tomato fruit. Moreover, the sequencing results also implied high level of ABA could negatively affect photosynthesis of tomato fruit, which needs more investigations to explore the interaction between ABA and photosynthesis in the future.
2017-02-09 | GSE63521 | GEO
Project description:In present study we compared transcriptional response to salinity stress between susceptible CO 12 and tolerant genotype trichy 1 of finger millet. We found out that several functional group of genes like transporters, transcription factors, genes involved in cell signalling, osmotic homeostasis, compatible solutes biosynthesis were upregulated more in tolerant genotype as compared to susceptible genotype in response to salinity stress. Salnity inhibited photosynthetic capacity and photosynthesis related genes more in susceptible genotype as compared to tolerant genotype. Identified genes are excellent targets for further functional studies in order to understand more specific molecular mechanisms of salt tolerance in two genotypes of finger millet and can be further used for developing salinity tolerant crops through genetic engineering.
2014-08-15 | GSE55462 | GEO