Dataset Information

Proteomic analysis of early salt stress response in root and shoot of rice seedlings

ABSTRACT: To elucidate early stress response signalling networks evolved in rice, we have demonstrated the comparative proteome analysis of 10-day-old IR-64 rice seedlings (Oryza sativa L. cv. IR-68) subjected to 200 mM NaCl stress for 6 hours and control condition

INSTRUMENT(S):

ORGANISM(S): Oryza Sativa (rice)

TISSUE(S): Root, Shoot

SUBMITTER: Keshava Prasad T. S.

LAB HEAD: Prof. T. S. Keshava Prasad

PROVIDER: PXD024902 | Pride | 2026-04-15

REPOSITORIES: Pride

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Publications

Susceptibility of Rice Crop to Salt Threat: Proteomic, Metabolomic, and Physiological Inspections.

Arefian Mohammad M Prasad Thottethodi Subrahmanya Keshava TSK

Journal of proteome research 20221123 1

Rice is a staple food crop worldwide; however, salinity stress is estimated to reduce its global production by 50%. Knowledge about initial molecular signaling and proteins associated with sensing salinity among crop plants is limited. We characterized early salt effects on the proteome and metabolome of rice tissues. Omics results were validated by western blotting and multiple reaction monitoring assays and integrated with physiological changes. We identified 8160 proteins and 2045 metabolites ...[more]

PMID: 36417662

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Project description:In the summer of 2012, one year after the 3.11 accident at Fukushima Daiichi nuclear power plant following the Great Tohoku Earthquake, a project was initiated to examine the effects of low-level gamma radiation on rice plants. The site of the experiment was the highly contaminated Iitate village in Fukushima prefecture of Japan. The basic experimental strategy was to expose healthy rice seedlings to continuous low-dose gamma radiation and examine the morphological and molecular genetic changes therien. Selected gene expression profiles of internal control, DNA replication/repair, oxidative stress, photosynthesis, and defense/stress functions were examined by semi-quantitative RT-PCR. Results revealed that low-level gamma radiation affects the expression of numerous genes, in particular showing the early (6 h) induction in DNA repair/damage-related genes and the late (72 h) induction of a previously described marker gene for defense/stress responses. Based on these results, which confirmed our data from preliminary experiments using detached rice leaves for radiation exposure, we proceeded for DNA microarray analysis. Using the established dye-swap approach, we analyzed the differentially expressed genes at 6 and 72 h time points using a whole rice genome 4 x 44 K custom chip. Obtained results showed that exposure to low-level gamma radiation differentially regulated 4481 (induced) and 3740 (suppressed) and 2291 (induced) and 1474 (suppressed) rice leaf genes at 6 and 72 h post-exposure, respectively, by at least two-fold changes. MapMan bioinformatics tool was also used to produce diagrams of the potential pathways, based on the input gene expression data of highly changed genes, operating downstream of the gamma radiation perception by rice plant.Inventory of a large number of gamma radiation-responsive genes in leaves provide new information and increased knowledge on novel regulatory processes in rice. The highly contaminated Iitate Farm (ITF), which is located 31 Km from the damaged nuclear power plant and having a background radiation level over 100 times (~ 5 microSv/h) than normal, was the designated place for the re-examination of low-level gamma radiation experiments using rice as a model system. As our group had a decade of experience and data on the effects of gamma radiation on leaf segments, the experimental was designed in such a way so as to expose whole rice plants to gamma radiation being emitted from the contaminated ground and examine the morphological and molecular genetic changes in the leaves under a dose-dependent manner.

			Action	DRS
	Rice_TP.msf	Msf
	Rice_TP_F1_R1.raw	Raw
	Rice_TP_F1_R2.raw	Raw
	Rice_TP_F1_R3.raw	Raw
	Rice_TP_F2_R1.raw	Raw