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ABSTRACT: Transcriptome analysis of developing embryo reveal the mechanisms of high oil of Chinese hickory (Carya cathayensis Sarg.)

PROVIDER: PRJNA687050 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13284119.fastq.gz	Fastqsanger.gz
	SRR13284120.fastq.gz	Fastqsanger.gz
	SRR13284121.fastq.gz	Fastqsanger.gz
	SRR13284122.fastq.gz	Fastqsanger.gz
	SRR13284123.fastq.gz	Fastqsanger.gz

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Oil body proteome reveals dynamic changes of oil body protein during embryonic development of Carya cathayensis nuts

Project description:Oil body (OB) is an important intracellular organelle for triacylglycerols (TAGs) storage. In present study, OB fractions from three developmental stages of Chinese hickory (Carya cathayensis) seed were purified and the OB fraction accumulated proteins were then isolated and analyzed by liquid chromatography-tandem massspectrometry (LC-MS/MS). Protein compositions throughout the various developmental phases were calculated using label-free intensity-based absolute quantification (iBAQ) algorithm.

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hickory LC-MS/MS - Comparative Proteomic Analysis of the Graft Unions in Hickory (Carya cathayensis) Provides Insights into Response Mechanisms to Grafting Process

Project description:Hickory (Carya cathayensis) is a woody plant with high nutritional and economic value, and is widely cultivated in China. It is different from herbaceous plants and undergoes a long vegetative stage before reaching floral transition. Hickory can be cultivated on a large scale using grafting. To reveal the response mechanisms to grafting, we employed a proteomics-based approach to identify differentially expressed proteins during the hickory grafting process. In our study, 3723 proteins were identified and 2518 proteins were quantified. A total of 710 differentially quantified proteins (DQPs) were identified and these were involved in various molecular functional and biological processes. Among these DQPs, 341 were up-regulated and 369 were down-regulated at 7 days after grafting compared to the control. The protein interaction networks of the DQPs indicated that there were two enriched interaction clusters. These were „ribosome‟ and „starch and sucrose metabolism‟. Four auxin-related proteins were down-regulated, which was in agreement with the transcription levels of their encoding genes. The Kyoto Encyclopedia of Genes and Genomes analysis showed that the „Flavonoid biosynthesis‟ pathway was significantly up-regulated. Further experiments verified a significant increase in the total flavonoid contents in scions, which suggested that graft union formation may activate flavonoid biosynthesis to increase the contents of a series of downstream secondary metabolites. This comprehensive analysis provides fundamental information on the candidate proteins and the secondary metabolism pathways involved in the grafting process for hickory.

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Quantitative succinyl-proteome profiling of hickory (Carya cathayensis) during grafting process

Project description:Hickory (Carya cathayensis) is an poplar nut-producing tree with high economic value. To overcome its long juvenile phase, grafting was applied to accelerate the transition from vegetative phase to reproductive phase. Lysine succinylation, a newly identified post-translational modification (PTM), is associated with various cellular processes. However, the regulatory mechanism underlying grafting process of hickory has not been studied at the level of PTM. Here, 259 succinylation sites in 202 proteins were identified, representing the first comprehensive lysine succinylome in hickory. The succinylation is biased to occur on the cytosolic proteins of hickory, indicating an effect of succinylation on the activities of enzymes associated with cellular metabolism. Moreover, four conserved succinylation motifs were identified in the succinylated peptides. Comparison of two grafting stages of hickory revealed that the differential expressed succinylated proteins were mainly involved in sugar metabolism, carbon fixation, amino acid metabolism and plant-pathogen interaction. In total, seven heat shock proteins (HSPs) with 11 succinylation sites were identified, and all these HSPs were up-regulated during the grafting process of hickory. Our data suggested that succinylated HSPs might play a role in the tolerance of grafted hickory plants. Our data are basic resources for the functional validation of succinylated proteins and a starting point for investigations into the molecular basis of lysine succinylation in the grafting process of hickory.

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