Ontology highlight
ABSTRACT:
PROVIDER: PRJNA894096 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR22049136_1.fastq.gz | Fastqsanger.gz | |||
| SRR22049136_2.fastq.gz | Fastqsanger.gz | |||
| SRR22049137_1.fastq.gz | Fastqsanger.gz | |||
| SRR22049137_2.fastq.gz | Fastqsanger.gz | |||
| SRR22049138_1.fastq.gz | Fastqsanger.gz |
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Project description:Andrographis paniculata Nees and its major compound andrographolide is known to exhibit a pleothera of activities. Active component enriched extracts are known to provide various beneficial effects, and therefore it was interesting to investigate whether increased amount of major compound alters gene expression. To acheive this, HePG2 cells treated with Andrographis paniculata extract (AP) and andrographolide enriched –extract (AP20) were subjected to microarray analysis to check their effect on global gene expression.
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Project description:Most blue color in flowers is due to anthocyanin, and considerable proportion of blue coloration can be attributed to metal-complexed anthocyanins. Recently, we reported vacuolar localized iron-transporter in blue petal cells of Tulipa gesneriana. However the mechanism of another metal ion transporters and subsequent flower color development has yet to be fully explored. In Hydrangea macrophylla, Al3+ is involved in blue coloration and the anthocyanin is formed Al3+-complex in vacuoles. To identify the molecular mechanism of blue coloration in hydrangea flowers, we tried to isolate the related genes transporting metal ion into vacuoles. From the sepal cDNA library we read the sequences of ca. 12000 genes, then a microarray analysis was carried out. From the sequences information, we chose several genes that might localize vacuolar membrane and transport Al3+. By using Al3+-sensitive yeast strain, we could identify the gene transporting Al3+ into vacuole. From the functional similarity and predicted localization, we could also identify the gene transporting Al3+ into cytosol. We will report the Al3+ mobilization from out of cell into vacuole in the sepal of Hydrangea macrophylla. Three sepal pigmentation stages were chosen: S1=no pigmentation-sepal closed; S2=started pigmentation-sepal opening; and S3=pigmentation complete-sepal opened. One pooled sepal sample per stage was prepared and gene expression pattern was analyzed by custom-designed Hydrangea oligo DNA microarray (CombiMatrix 12K). The genes that were expressed >2-fold or <0.5-fold in S3 compared with S1 and S2 were selected as potential players involved in sepal pigmentation due to aluminum accumulation.
2012-12-20 | E-GEOD-26665 | biostudies-arrayexpress
Project description:Most blue color in flowers is due to anthocyanin, and considerable proportion of blue coloration can be attributed to metal-complexed anthocyanins. Recently, we reported vacuolar localized iron-transporter in blue petal cells of Tulipa gesneriana. However the mechanism of another metal ion transporters and subsequent flower color development has yet to be fully explored. In Hydrangea macrophylla, Al3+ is involved in blue coloration and the anthocyanin is formed Al3+-complex in vacuoles. To identify the molecular mechanism of blue coloration in hydrangea flowers, we tried to isolate the related genes transporting metal ion into vacuoles. From the sepal cDNA library we read the sequences of ca. 12000 genes, then a microarray analysis was carried out. From the sequences information, we chose several genes that might localize vacuolar membrane and transport Al3+. By using Al3+-sensitive yeast strain, we could identify the gene transporting Al3+ into vacuole. From the functional similarity and predicted localization, we could also identify the gene transporting Al3+ into cytosol. We will report the Al3+ mobilization from out of cell into vacuole in the sepal of Hydrangea macrophylla.
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Project description:The Asian citrus psyllid (Diaphorina citri) is a pest of citrus and the primary insect vector of the bacterial pathogen, ‘Candidatus Liberibacter asiaticus’ (CLas), which is associated with citrus greening disease. Variability in CLas titer in insects collected from infected plants has been attributed in part to the host plant from which the insects were collected. CLas accumulates to high titers in infected Citrus macrophylla, and in D. citri feeding on the infected plants of this species. In contrast, in the citrus relative Murraya paniculata, CLas titers remain low in infected plants and in D. citri exposed to infected plants. In this study, top-down and bottom-up proteomics methods were used to investigate the impact of these different host plants on D. citri protein expression. Difference in gel electrophoresis (DIGE) was used to identify protein spots on two-dimensional gels that were larger in one of three insect sample classes compared to the other two: D. citri continuously reared on C. macrophylla, D. citri reared continuously on M. paniculata, and D. citri transferred to M. paniculata for five days feeding after continuous rearing on C. macrophylla. Peptide mass spectrometry was used to identify and quantify proteins in target spots upregulated in each sample class. Shotgun proteomics was used to identify and quantify proteins from analysis of tryptic peptide samples prepared from whole insects from four sample classes: the reciprocal host switch condition (D. citri transferred to C. macrophylla for five days feeding after continuous rearing on M. paniculata) in addition to the three sample classes used in DIGE analysis. Integration of the results of both analyses reveals proteins identified by separate experimental workflows to be upregulated in insects adapted to each host plant, and in insects adapting to a novel host plant. A peptidoglycan-degrading protein involved in the immune response to bacterial pathogens was found to be upregulated in M. paniculata-reared D. citri. In the absence of CLas infection, host plant factors specific to M. paniculata may prime the antibacterial immune response in D. citri. Understanding the insect proteins involved in the adaptation of D. citri to host plants with variation in their susceptibility to CLas will inform the development of control strategies aimed at stopping the spread of citrus greening disease.
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