Dataset Information

ITRAQ-based proteomic analysis of style proteins and S-RNase-related proteins in Huanghua and its homozygous S-genotype offspring

ABSTRACT: We used iTRAQ technology to investigate the protein expression characteristics of S-RNases in S-gene homozygous germplasm. By using MaxQuant to search the raw mass spectrometry data files against the protein database, a total of 30,503 identified spectra, 13,568 peptides, and 4,472 proteins were identified in the styles of Huanghua (S1S2) and its homozygous S-genotype offspring (S1S1 and S2S2). These identified proteins were predicted to be located in extracellular regions, cytoplasm, nucleus, mitochondria, Golgi apparatus, endoplasmic reticulum, peroxisomes, vacuoles, nucleoplasm, and other cellular compartments. The number of DEPs among the three varieties was calculated. According to the overall distribution of these proteins, the highest number of DEPs was between S2S2 and S1S2, while the lowest number of DEPs was between S2S2 and S1S1. This indicated that the protein expression patterns of S2S2 and S1S1 were more similar to each other, while both offspring samples showed significant differences in protein expression when compared with the parent S1S2. In this study, we conducted DEP analyses focusing on S-RNases and the proteins that interact with them in the styles of the three pear varieties. Figure 6 shows the heat-map of the expression levels of the 13 identified S-RNase-related proteins, which reflects their differences in expression levels across the three samples. In terms of the overall expression trend, using the offspring sample S1S1 as a normal expression standard, most of the S-RNase-related proteins were down-regulated in the parent S1S2. In contrast, in the offspring sample S2S2, most of the S-RNase-related proteins were up-regulated relative to their levels in the other offspring sample S1S1, with only a few exceptions. Compared with the parent S1S2, both offspring samples, S1S1 and S2S2, showed up-regulated expression of 12 out of the 13 S-RNase-related proteins, except for S1-RNase. Comparing S1S1 and S2S2, the expression levels of F-box/WD-repeat_TBL1XR1, SKP1-like_1A_2, and S2-RNase were higher in S1S1 than in S2S2, while the expression levels of the other 10 S-RNase-related proteins were higher in S2S2 than in S1S1.

INSTRUMENT(S): TripleTOF 5600

ORGANISM(S): Pyrus Pyrifolia

TISSUE(S): Style

SUBMITTER: Yongjie Qi

LAB HEAD: Yongjie Qi

PROVIDER: PXD043543 | Pride | 2024-01-26

REPOSITORIES: Pride

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Publications

Specific functions of single pistil S-RNases in S-gene homozygous Pyrus germplasm.

Qi Yongjie Y Gao Zhenghui Z Ma Na N Lu Liqing L Ke Fanjun F Zhang Shaoling S Xu Yiliu Y

BMC plant biology 20231120 1

Gametophytic self-incompatibility (SI) is regulated by S-allele recognition; that is, pollen in a style with the same S-genotype will undergo programmed cell death and stop growing so that it is unable to complete double fertilization, ultimately resulting in the SI response. S-RNase is the female determinant of SI in pear (Pyrus). In the Pyrus genome, there are two different S-RNase alleles at the S-locus, which generate two different S-RNase products in the pistil. The extracted S-glycoprotein ...[more]

PMID: 37981705

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Project description:Biological CO2 mitigation by photosynthetic microorganisms has emerged as a promising approach for generating biomass-based energy during the course of CO2 fixation. Additionally, cyanobacteria-based biofuels have also garnered immense attention lately because of the depleting fossil fuel reserves and the growing energy demands. Synechococcus elongatus PCC 11801, a fast-growing, high CO2 tolerant, novel isolate of cyanobacteria, is an interesting candidate for metabolic engineering applications. Since under laboratory conditions, it exhibited a high level of tolerance to different environmental stresses (CO2, light, temperature, salts and butanol), it seemed like an encouraging prospect for the production of fuels and other industrially relevant chemicals. This is the first-ever functional global proteomics investigation of Synechococcus elongatus PCC 11801 isolate grown at elevated CO2 levels using high-throughput iTRAQ approach. Three independent biological replicates were analyzed and a total of 861 proteins were identified, out of which 492 proteins were found to be present in all the three replicates. Of these, 248 proteins showing the same trend across the three replicates (≥1.5 fold up-regulation or ≤0.66 fold down-regulation) were chosen for pathway analysis. The metabolic responses were marked with a down-regulation of inorganic carbon transporters alongside an induction of nitrogen transport and absorption proteins in order to uphold the apposite carbon-nitrogen equilibrium. Further acclimation progression exposed an increased expression of proteins taking part in photosynthesis and generation of light harvesting pigments such as chlorophyll. Similarly, a downshift of proteins involved in photoprotection and defense against ROS (reactive oxygen species) was observed. Another principal discovery was the perturbation in expression of proteins belonging to central metabolic pathways like glycolysis, TCA cycle, pentose phosphate pathway as a coping mechanism to high CO2 stress. Further, validation studies were carried out using MRM assays and western blotting of key altered proteins.

Dataset Information

ITRAQ-based proteomic analysis of style proteins and S-RNase-related proteins in Huanghua and its homozygous S-genotype offspring

Publications

Specific functions of single pistil S-RNases in S-gene homozygous Pyrus germplasm.

Similar Datasets

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