Ontology highlight
ABSTRACT:
PROVIDER: PRJNA687913 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13355357.fastq.gz | Fastqsanger.gz | |||
| SRR13355358.fastq.gz | Fastqsanger.gz | |||
| SRR13355359.fastq.gz | Fastqsanger.gz | |||
| SRR13355360.fastq.gz | Fastqsanger.gz | |||
| SRR13355361.fastq.gz | Fastqsanger.gz |
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Project description:To explore the molecular mechanism of low-K tolerance in sugarcane, we have employed whole genome microarray expression profiling to identify sugarcane genes in response to low-K stress. seeldings were transplanted to low-K hydroponic (containing 0.1 mmol.L-1 K+) and the roots were collected at 0 (CK), 8, 24 and 72 h after exposure to low-K condition. The expressions of genes in sugarcane roots were detected by microarray analysis. Totally 1545 genes at 8 h, 1053 genes at 24 h and 3155 at 72 h differentially expressed under low-K stress, when the 2-fold change was adopted as the threshold for determining differentially expressed genes. Among these genes, a certain amount of transcription factors, transporters, kinases, oxidative stress-related genes and genes in Ca+ and ethylene signaling pathway were detected to differentially express. Seeldings were treated with low-K hydroponic (containing 0.1 mmol.L-1 K+) and after 0 (CK), 8, 24 and 72 h exposure to low -K stress, the roots of sugarcane were collected. Four independent experiments were performed using roots collected at different time points
2014-10-02 | E-GEOD-61935 | biostudies-arrayexpress
Project description:To explore the molecular mechanism of low-K tolerance in sugarcane, we have employed whole genome microarray expression profiling to identify sugarcane genes in response to low-K stress. seeldings were transplanted to low-K hydroponic (containing 0.1 mmol.L-1 K+) and the roots were collected at 0 (CK), 8, 24 and 72 h after exposure to low-K condition. The expressions of genes in sugarcane roots were detected by microarray analysis. Totally 1545 genes at 8 h, 1053 genes at 24 h and 3155 at 72 h differentially expressed under low-K stress, when the 2-fold change was adopted as the threshold for determining differentially expressed genes. Among these genes, a certain amount of transcription factors, transporters, kinases, oxidative stress-related genes and genes in Ca+ and ethylene signaling pathway were detected to differentially express.
2014-10-02 | GSE61935 | GEO
Project description:In order to increase our understanding on the epigenetic regulation in response to abiotic stresses in plants, sRNA regulation in sugarcane plants submitted to drought stress was analyzed. Deep sequencing analysis was carried out to identify the sRNA regulated in leaves and roots of sugarcane cultivars with different drought sensitivities. An enrichment of 22-nt sRNA species was observed in leaf libraries. The pool of sRNA selected allowed the analysis of different sRNA classes (miRNA and siRNA). Twenty eight and 36 families of conserved miRNA were identified in leaf and root libraries, respectively. Dynamic regulation of miRNA was observed and the expression profile of eight miRNA was verified in leaf samples by stem-loop qRT-PCR assay. Altered miRNA regulation was correlated with changes in mRNA levels of specific targets. 22-nt miRNA triggered siRNA-candidates production by cleavage of their targets in response to drought stress. Some genes of sRNA biogenesis were down-regulated in tolerant genotypes and up-regulated in sensitive in response to drought stress. Our analysis contributes to increase the knowledge on the roles of sRNA in epigenetic-regulatory pathways in sugarcane submitted to drought stress.
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Project description:In order to increase our understanding on the epigenetic regulation in response to abiotic stresses in plants, sRNA regulation in sugarcane plants submitted to drought stress was analyzed. Deep sequencing analysis was carried out to identify the sRNA regulated in leaves and roots of sugarcane cultivars with different drought sensitivities. An enrichment of 22-nt sRNA species was observed in leaf libraries. The pool of sRNA selected allowed the analysis of different sRNA classes (miRNA and siRNA). Twenty eight and 36 families of conserved miRNA were identified in leaf and root libraries, respectively. Dynamic regulation of miRNA was observed and the expression profile of eight miRNA was verified in leaf samples by stem-loop qRT-PCR assay. Altered miRNA regulation was correlated with changes in mRNA levels of specific targets. 22-nt miRNA triggered siRNA-candidates production by cleavage of their targets in response to drought stress. Some genes of sRNA biogenesis were down-regulated in tolerant genotypes and up-regulated in sensitive in response to drought stress. Our analysis contributes to increase the knowledge on the roles of sRNA in epigenetic-regulatory pathways in sugarcane submitted to drought stress. Screenning of sRNA transcriptome of sugarcane plants under drougth stress
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Project description:Sugarcane is a very efficient crop to produce ethanol. In recent years, extensive efforts have been made in order to increase sugarcane yields. To reach this goal, molecular biology tools have been used comprehensively, identifying genes, pathways and genetic polymorphisms. However, some important molecular components, like microRNAs, have not been deeply investigated. MicroRNAs are an important class of endogenous small, noncoding RNAs that regulate gene expression at the post-transcription level and play fundamental roles in diverse aspects of animal and plant biology. Plant genomes harbor numerous miRNA genes that regulate many protein-coding genes to influence key processes ranging from development, metabolism, and responses to abiotic and biotic stresses. There is wide range of pests and diseases that affect sugarcane, yet the mechanisms that regulate pathogen interactions with sugarcane have not been thoroughly investigated. To gain knowledge on the physiological responses to pathogens mediated by microRNAs in sugarcane, we screened the transcriptoma of sugarcane plants infected with Acidovorax avenae subsp avenae, the causal agent of red stripe disease in sugarcane, and detected several microRNAs modulated in the presence of the pathogen. Furthermore, we validated with qPCR a number of microRNA expression patterns observed by bioinformatics analysis. In addition, we observed high expression levels of several star microRNAs, in numbers larger than the mature microRNAs in some cases. Interestingly, sof-miR408 was consistently down-regulated in the presence of several pathogens, but not in the presence beneficial microbes. This result indicates that the sugarcane senses pathogenic or beneficial microorganisms differentially and triggers specific epigenetic regulatory mechanisms accordingly
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