Ontology highlight
ABSTRACT:
PROVIDER: PRJNA541205 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9016430_1.fastq.gz | Fastqsanger.gz | |||
| SRR9016430_2.fastq.gz | Fastqsanger.gz | |||
| SRR9016431_1.fastq.gz | Fastqsanger.gz | |||
| SRR9016431_2.fastq.gz | Fastqsanger.gz | |||
| SRR9016426_1.fastq.gz | Fastqsanger.gz |
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Project description:Abstract: In order to understand the expression patterns of miRNAs in alfalfa under alkali stress, small RNA sequencing was performed on alfalfa roots at different time points under alkali stress, and miRNAs were identified and analyzed.
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Project description:Real-time quantitative PCR (RT–qPCR) is the favoured method for gene expression analysis in molecular biology due to its sensitivity, specificity, cost-effectiveness, and reproducibility. To obtain the accuracy and reliability of RT-qPCR, the use of reliable reference genes is inevitable. There were many reports about the physiological response of giant reed (Arundo donax L.) to abiotic stresses. However, there is little use in the validation of reference genes under different treatments. It still belongs to the blank that the research about selecting reference genes under salt and alkali. In this study, the expression stability of twenty-three candidate reference genes in leaves and roots were assessed under salt, drought, and alkali stresses using geNorm, NormFinder, BestKeeper, and Delta Ct algorithms. Our results showed that no one gene had an invariant expression under different conditions. For example, under drought stress, UPL3, UBC2, and APT1 were better reference genes in leaves, RPL5 and FPS2 were better in roots. Under alkali stress, GAPDH, APT1, and RPS5 were better reference genes in leaves; UPL3, ACT2, and SAMDC2 were better in roots. In addition, the expression of MSD1 was used to further confirm the validated reference genes under salt, drought, and alkali stresses. It was proved that the use of inappropriate reference genes in giant reed significantly altered the relative expression of target genes and even reversed the results. Consequently, our results provided guidelines for reference gene selection under salt, drought, and alkali stresses and a foundation for more accurate and widespread use of RT-qPCR in the giant reed.
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Project description:Drought has become an increasingly important constraint on grapevine sustainability due to global climate change. Vitis riparia, the only grapevine native to the upper Midwest region of the United States, is widely used in scion and rootstock breeding; however, it is not considered drought tolerant. In this study, RNA-Seq data were generated from grapevine root/shoot under WD and well-watered (control (C)) conditions to compare root signaling and shoot responses to water deficit.
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Project description:Abstract: In order to clarify the response mechanism of alfalfa under alkali stress, the transcriptome of roots was sequenced at different time points after stress and the expression patterns of all genes were analyzed.
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Project description:Soil salination and alkalization are global problems impairing plant survival by disrupting REDOX homeostasis. Whether melatonin regulates REDOX homeostasis at nitrosative level, and thus affects plant saline-alkali tolerance remains unknown. In saline-alkali stress, excess nitric oxide (NO) causes nitrosative damage in tomato roots. This NO can be degraded by S-nitrosoglutathione reductase (GSNOR), or stimulates caffeic acid O-methyltransferase (COMT) transcript for melatonin synthesis. Melatonin further feedback scavenges excess NO to alleviate nitrosative damage at the whole protein level, indicating by proteome S-nitrosylation. We target plasma membrane H+-ATPase 2 (HA2) and highlight that HA2 is S-nitrosylated at Cys206 in saline-alkali stress, reducing HA activity, H+ efflux, and tolerance by impairing its interaction with 14-3-3 protein 1 (TFT1). In agreement with these observations, COMT-mediated melatonin relieves the HA2 S-nitrosylation to recover its function and saline-alkali tolerance. Therefore, we propose NO and melatonin as a pair of REDOX switches to control HA2 S-nitrosylation and saline-alkali tolerance. Under natural saline-alkali conditions, tomato productivity can be improved by grafting with COMT-, GSNOR-, HA2-overexpression rootstocks or by genetic engineering non-nitrosylated HA2C206S mutants. Using melatonin-NO-HA2 module as a case, this study illuminates a novel molecular function of melatonin and relevant genetic engineering strategies in future agriculture.
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Project description:Hydrogen cyanamide (HC) is an agrochemical compound frequently used to break bud dormancy in grapevine grown under mild winter conditions all over the world. The present study was carried out to get a better understanding of the molecular mechanism associated with HC to release bud dormancy in grapevine using RNA-seq based transcriptomic and tandem mass tag (TMT) based proteomic analysis.
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Project description:we characterized the rice alkaline tolerant mutant, alt1. Map-based cloning revealed that alt1 harbors a mutation in a putative chromatin remodeling ATPase gene. ALT1-RNAi transgenic plants mimicked the alt1 phenotype, exhibiting tolerance to alkali stress in a transcript dosage-dependent manner. We found that the predicted ALT1 protein belonged to the Ris1 subgroup of the Snf2 family and was localized in the nucleus. qRT-PCR analysis showed that ALT1 was predominantly expressed in leaf blades and sheaths, and that ALT1 transcription was rapidly suppressed after alkaline treatment. These results support the notion that ALT1 is a negative regulator of alkaline tolerance. Roots of two-leaf stage alt1 and WT seedlings grown under normal conditions were sampled for microarray analysis. The transcriptomic profiles were investigated using an Agilent-015241 Rice Gene Expression 4×44 K Microarray (Agilent Technology) containing 32,325 probes corresponding to cDNA, 6,934 probes corresponding to expressed sequence tags (ESTs), and 2,612 probes corresponding to gene predicted loci, respectively, with three independent biological replicates. Roots of two-leaf stage alt1 and WT seedlings grown under normal conditions were sampled for microarray analysis
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Project description:Soil alkalinity greatly affects plant growth and crop productivity. Although RNA-Seq analyses have been conducted to investigate genome-wide gene expression in response to alkaline stress in many plants, the expression of alkali-responsive genes in rice has not previously investigated. In this study, the transcriptomic data were compared between an alkaline-tolerant [WD20342 (WD)] and an alkaline-sensitive [Caidao (CD)] rice cultivar under control and alkaline stress conditions. A total of 962 important alkali-responsive (IAR) genes from highly differentially expressed genes (DEGs) were identified, including 28 alkaline-resistant cultivar-related genes, 771 alkaline-sensitive cultivar-related genes and 163 cultivar-non-specific genes. Gene ontology (GO) analysis suggested the enrichment of IAR genes involved in response to various stimuli or stresses. According to KEGG pathway analysis, the IAR genes were related primarily to plant hormone signal transduction and biosynthesis of secondary metabolites. Additionally, among these 962 IAR genes, 74 were transcription factors and 15 occurred with differential alternative splicing between the different samples after alkaline treatment. Our results provide a valuable resource on alkali-responsive genes and should benefit the improvement of alkaline stress tolerance in rice.
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