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Oryza rufipogon cultivar:Dongxiang wild rice

ABSTRACT: Oryza rufipogon cultivar:Dongxiang wild rice Raw sequence reads

PROVIDER: PRJNA641241 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	SRR12102351_1.fastq.gz	Fastqsanger.gz
	SRR12102351_2.fastq.gz	Fastqsanger.gz
	SRR12102354_1.fastq.gz	Fastqsanger.gz
	SRR12102354_2.fastq.gz	Fastqsanger.gz
	SRR12104676_1.fastq.gz	Fastqsanger.gz

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Project description:Dongxiang wild rice (Oryza rufipogon Griff.) is the progenitor of cultivated rice (Oryza sativa L.) and is well known for its superior level of tolerance against cold, drought and diseases. To date, however, little is known about the salt-tolerant character of Dongxiang wild rice. To elucidate the molecular genetic mechanisms of salt-stress tolerance in Dongxiang wild rice, the Illumina HiSeq 2000 platform was used to analyze the transcriptome profiles of the leaves and roots at the seedling stage under salt stress compared with those under normal conditions. The analysis results for the sequencing data showed that 6,867 transcripts were differentially expressed in the leaves (2,216 up-regulated and 4,651 down-regulated) and 4,988 transcripts in the roots (3,105 up-regulated and 1,883 down-regulated). Among these differentially expressed genes, the detection of many transcription factor genes demonstrated that multiple regulatory pathways were involved in salt stress tolerance. In addition, the differentially expressed genes were compared with the previous RNA-Seq analysis of salt-stress responses in cultivated rice Nipponbare, indicating the possible specific molecular mechanisms of salt-stress responses for Dongxiang wild rice. A large number of the salt-inducible genes identified in this study were co-localized onto fine-mapped salt-tolerance-related quantitative trait loci, providing candidates for gene cloning and elucidation of molecular mechanisms responsible for salt-stress tolerance in rice.

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Project description:Iron (Fe) is an essential micronutrient for almost all organisms. However, Fe is frequently inaccessible to plants. To acquire insoluble Fe from soil, rice (Oryza sativa L.) plants employ a Combined Strategy, which is composed by all features of Strategy II, common to all Poaceae species, and some features of the Strategy I from non-Poaceae. To understand the evolution of Fe uptake mechanisms, we analyzed the root transcriptomic response to Fe deficiency in two species from the Oryza genus: O. sativa and its wild progenitor O. rufipogon. A total of 622 and 2,017 genes were found to be differentially expressed in O. sativa and O. rufipogon, respectively. Among the genes regulated in both species, we found the Fe transporters associated with Strategy I, such as IRT1, IRT2 and NRAMP1; and genes associated with Strategy II, such as YSL15 and IRO2.

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