PXD010923

PXD010923 is an original dataset announced via ProteomeXchange.

Title	Proteogenomic analysis of rice hypoxic germination
Description	Post-transcriptional mechanisms, including alternative splicing (AS) and alternative translation initiation (ATI), have been used to explain the protein diversity involved in plant developmental processes and stress responses. Rice germination under hypoxia conditions is a classical model system for the study of low oxygen stress. It is known that there is transcriptional regulation during rice hypoxic germination, but the potential roles of AS and ATI in this process are not well understood. In this study, a proteogenomic approach was used to integrate the data from RNA sequencing, qualitative and quantitative proteomics to discover new players or pathways in the response to hypoxia stress. The improved analytical pipeline of proteogenomics led to the identification of 10,253 intron-containing genes, 1,729 of which were not present in the current annotation. Approximately 1,741 differentially expressed AS (DAS) events from 811 genes were identified in hypoxia-treated seeds in comparison to controls. Over 95% of these were not present in the list of differentially expressed genes (DEG). In particular, regulatory pathways such as spliceosome, ribosome, ER protein processing and export, proteasome, phagosome, oxidative phosphorylation and mRNA surveillance showed substantial AS changes under hypoxia, suggesting that AS responses are largely independent of traditional transcriptional regulation. Massive AS changes were identified, including the preference usage of certain non-conventional splice sites and enrichment of splicing factors in the DAS datasets. In addition, using self-constructed protein libraries by 6-frame translation, thousands of novel proteins/peptides contributed by ATI were identified. In summary, these results provide deeper insights towards understanding the underlying mechanisms of AS and ATI during rice hypoxic germination.
HostingRepository	PRIDE
AnnounceDate	2019-11-12
AnnouncementXML	Submission_2019-11-12_13:47:52.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Moxian Chen
SpeciesList	scientific name: Rice(O. sativa); NCBI TaxID: 4530;
ModificationList	No PTMs are included in the dataset
Instrument	TripleTOF 5600

Revision	Datetime	Status	ChangeLog Entry
0	2018-08-29 04:02:08	ID requested
⏵ 1	2019-11-12 13:47:54	announced

Chen MX, Zhu FY, Wang FZ, Ye NH, Gao B, Chen X, Zhao SS, Fan T, Cao YY, Liu TY, Su ZZ, Xie LJ, Hu QJ, Wu HJ, Xiao S, Zhang J, Liu YG, Alternative splicing and translation play important roles in hypoxic germination in rice. J Exp Bot, 70(3):817-833(2019) [pubmed]

curator keyword: Biological

submitter keyword: alternative splicing, hypoxia, Oryza sativa, proteogenomics, seed germination, splicing factor, translation initiation

Jianhua Zhang
contact affiliation	Hong Kong Baptist University
contact email	jzhang@hkbu.edu.hk
lab head
Moxian Chen
contact affiliation	The Chinese University of Hong Kong
contact email	47194220@qq.com
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2019/11/PXD010923

PRIDE project URI

• PRIDE
  1. PXD010923
     1. Label: PRIDE project
     2. Name: Proteogenomic analysis of rice hypoxic germination