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Avicennia officinalis

ABSTRACT: Avicennia officinalis Transcriptome or Gene expression

PROVIDER: PRJNA381534 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5412281_1.fastq.gz	Fastqsanger.gz
	SRR5412281_2.fastq.gz	Fastqsanger.gz

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Avicennia officinalis

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Project description:Salt-responsive differential gene expression analysis by RNA sequencing in the roots of a mangrove Avicennia officinalis

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Salt-responsive differential gene expression analysis by RNA sequencing in the roots of a mangrove Avicennia officinalis

Project description:The roots of halophytes such as mangroves provide the first line of defense against the constant salt stress they experience. Such adaptation should include major reprogramming of the gene expression profiles. Using RNA-sequencing approach we identified 101,446 ‘all-unigenes’ from the seedling roots of the mangrove tree Avicennia officinalis. From the data 6618 genes were identified to be differentially regulated by salt when two-month-old greenhouse-grown seedlings without prior exposure to sea water were subjected to 24 h of 500 mM NaCl treatment. About 1,404 genes were significantly up-regulated, while 5214 genes were down-regulated. Based on Gene Ontology analysis, they could be classified under various categories, including metabolic processes, stress and defense response, signal transduction, transcription-related and transporters. Our analysis provides the baseline information towards understanding salt balance in mangroves and hence mechanism of salt tolerance in plants.

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Proteomic analysis of plasma membrane and tonoplast from the leaves of a mangrove plant Avicennia officinalis

Project description:We used gel electrophoresis coupled with LC-MS based proteomics to identify key transport proteins in the plasma membrane (PM) and tonoplast fractions of Avicennia officinalis leaves. This was part of our attempts to understand salt tolerance and secretion in mangrove plant species. PM and tonoplast proteins were purified using two-aqueous phase partitioning and density gradient centrifugation, respectively. Thirty of the 154 PM proteins and 31 of the 118 tonoplast proteins identified were predicted to have transmembrane domains. About 90% of the identified proteins could be classified based on their functions. The major classes of proteins were predicted to be involved in transport, metabolic processes, signal transduction and defense /stress response, while a few of the proteins were predicted to be involved in membrane trafficking. The main classes of transporter proteins identified included H+-ATPases, ATP-binding cassette transporters (ABC) and aquaporins, all of which could play a role in salt secretion. These data will serve as the baseline membrane proteomic dataset for Avicennia species. Further, this information can contribute to future studies on understanding the mechanism of salt tolerance in halophytes in addition to salt secretion in mangroves.

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Proteomic characterisation of the salt gland-enriched tissues of the mangrove tree species Avicennia officinalis

Project description:Plant salt glands are nature’s desalination devices that harbour potentially useful information pertaining to salt and water transport during secretion. As part of the program toward deciphering secretion mechanisms in salt glands, we adopted a shotgun approach to look into the proteome of salt-gland enriched tissues of the mangrove tree species Avicennia officinalis. To achieve this, we isolated the adaxial epidermal peels (which harbour the salt glands), and separated them from the mesophyll tissues of the leaves. Three biological replicates were prepared and total proteins were extracted from these tissues. Proteins that were found to be unique in salt gland-enriched tissues were obtained by eliminating proteins found in the mesophyll tissues. The proteins that are uniquely present in salt gland-enriched tissues were then selected and categorized by GO analysis.

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Identification and Analysis of Red Sea Mangrove (Avicennia marina) microRNAs by High-Throughput Sequencing and their Association with Stress Responses

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