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Dendrobium officinale

ABSTRACT: Transcriptome analysis of Dendrobium officinale

PROVIDER: PRJNA277299 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1909493_1.fastq.gz	Fastqsanger.gz
	SRR1909493_2.fastq.gz	Fastqsanger.gz
	SRR1909494_1.fastq.gz	Fastqsanger.gz
	SRR1909494_2.fastq.gz	Fastqsanger.gz

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Project description:Dendrobium officinale is a traditional medicinal herb with a mount of bioactive components. Alkaloid is one of the major active ingredients of Dendrobium plants, and its immune regulatory effects have been well-studied. A total of 4857 DEGs, including 2943 up- and 1932 down-regulated genes, were identified between the control and MeJA-treated groups. Several shikimate and methylerythritol 4-phosphate pathway genes and a number of MeJA-induced P450 family genes, aminotransferase genes and methyltransferase genes were identified, providing several important candidates to further elucidate the alkaloid biosynthetic pathway of D. officinale. Furthermore, a large number of MeJA-induced transcript factor encoding genes were identified, suggesting a complex genetic network affecting the alkaloid metabolism in D. officinale.

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Project description:Mycorrhizal fungi colonize orchid seed and induce the germination. This so-called symbiotic germination is a critical developmental process in the lifecycle of all orchids. However, the molecular changes taking place during the orchid seed symbiotic germination still remains largely unknown. To better understand the molecular mechanism of orchid seed germination, we performed comparative transcriptomic and proteomic analysis on Chinese traditional medicinal orchid plants, Dendrobium officinale to explore protein expression change at the different developmental stages between asymbiotic and symbiotic germination and identify the key proteins regulated symbiotic germination of orchid seeds. iTRAQ analysis from 8 samples identified 2256 plant proteins, of which, 308 proteins were differentially expressed across three developmental stages within asymbiotic or symbiotic accession and 229 proteins are differentially expressed in the symbiotic germination compared to asymbiotic germination. 32 proteins are co-upregulated in both proteomic and transcriptomic level for symbiotic germination compared to asymbiotic germination. Our results revealed that symbiotic germination of D. officinale seeds probably shares the common signal pathway with asymbiotic germination during the early germination stage.

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