GmMPK4 is a negative regulator of SA-mediated defense response
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ABSTRACT:
ORGANISM(S): Glycine max
PROVIDER: GSE29653 | GEO | 2011/06/02
SECONDARY ACCESSION(S): PRJNA141243
REPOSITORIES: GEO
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Project description:GmMPK4 silencing was performed in Glycine max (Williams 82) using virus-induced gene silencing (VIGS) mediated by Bean pod mottle virus (BPMV). Microarray analysis was performed to compare the transcriptional profile of GmMPK4-silenced plants vs vector control plants. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Jianzhong Liu. The equivalent experiment is GM25 at PLEXdb.] genotype: Williams 82(4-replications) genotype: GmMPK4-silenced Williams 82(4-replications)
2011-06-01 | E-GEOD-29653 | biostudies-arrayexpress
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2011-12-03 | E-GEOD-34102 | biostudies-arrayexpress
Project description:VIGS (virus-induced gene silencing) was used to silence a putative LRR-RLK, Affy ID Rbaal9i05_at, in barley. Expression patterns in leaves were compared between untreated control leaves, virus treated leaves, VIGS-Rbaal knockdown leaves and VIGS-Rbaal/PDS (phytoene desaturase) co-silenced leaves. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, David L Parrott. The equivalent experiment is BB108 at PLEXdb.]
2011-12-03 | GSE34102 | GEO
Project description:Barley stripe mosaic virus-induced gene silencing (BSMV-VIGS) was used to identify significant new genes in the regulation of host innate immunity. This experiment was designed to uncover significant changes in Bln1 (Contig12219_at)-silenced plants relative to empty vector and buffer treated controls. Five independent biological replications of a split-plot experimental design were conducted with replications as blocks, treatment with Blumeria graminis f. sp. hordei (Bgh) as the whole-plot factor, and all combinations of genotype (Mla13 and Mla9) and VIGS treatment [Buffer control (mock), BSMV:00 (empty vector), and BSMV:Bln1248] as the split-plot factor for a total of 60 GeneChip hybridizations. Ten seedlings were used as a split-plot experimental unit for each combination of replication, Bgh treatment, genotype, and VIGS treatment. Plants were grown in a controlled 20°C glasshouse prior to VIGS treatment. Twelve days after VIGS treatment, half of the plants in each replication were challenged with the compatible Bgh isolate 5874. Top halves of 5 of the 10 seedling third leaves (about 10 cm) from each split-plot experimental unit were harvested into liquid N2 at 32 hours after inoculation (HAI) - the timepoint with the highest differential Bln1 transcript accumulation (Meng et al. 2009), and after initial establishment of the perihaustorial interface (Caldo et al. 2004). The remaining 5 leaves were used to record infection phenotype 7 days later. RNA was isolated for GeneChip hybridization from the 32-HAI samples. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Yan Meng. The equivalent experiment is BB101 at PLEXdb.]
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Project description:Hypersensitive response-related programmed cell death (PCD) has been extensively analyzed in various plant–virus interactions. However, little is known about changes in gene expression associated with cell death caused by compatible viruses. The synergistic interaction of Potato virus X (PVX) with Plum pox virus (PPV) results in increased symptoms that lead to systemic necrosis (SN) in Nicotiana benthamiana. Here, we performed three transcriptome comparisons in response to i) a PVX recombinant virus expressing the helper component-proteinase (HC-Pro) gene from PPV that leads to SN, ii) a systemic incompatible interaction conferred by the Tobacco mosaic virus (TMV)-resistance gene N (SHR), and iii) the depletion of the PBE subunit of the proteasome that leads to PCD by virus induced gene silencing (VIGS Prot), at early and late stages of infection. Our analysis indicated that the SN response was clustered with SHR by the similarity of their overall gene expression profiles. However, the expression profiles of defence-related and hormone-responsive genes in response to SN were more closely related to the response to VIGS Prot than to that elicited by SHR. This suggests the potential contribution of proteasome dysfunction to the increase in pathogenicity observed in PVX-potyvirus infections We compare the gene expression profiles of Nicotiana benthamiana plants infected with either necrosis-inducing viruses or non-necrosis-inducing viruses, as follow: PVX/HCWT-infected plants versus plants infected with a PVX recombinant virus expressing a PPV HC-Pro mutant (PVX/HCLH) that was unable to induce the SN response (SN comparison), at 7 and 11 days postinoculation (dpi), (ii) TRV:NbPBE-silenced plants versus plants infected with the TRV empty vector (VIGS Prot comparison), at 4 and 8 days after infiltration (dpa), and (iii) TMV-GFP-infected, N-transgenic plants versus wild-type plants infected with TMV-GFP (SHR comparison), at 24 and 72 hours after temperature shift (hts). Per time and treatment, three independent biological replicates were used to monitor differences in gene expression between treatments
2012-02-02 | E-GEOD-34841 | biostudies-arrayexpress
Project description:The pod is the main edible part of Phaseolus vulgaris L. (common bean). The commercial use of the pods is mainly affected by their color. Consumers seem to prefer golden pods. However, planters suffer economic losses because of pod color instability. The aim of the present study was to identify the gene responsible for the golden pod trait in the common bean. ‘A18-1’ (a golden bean line) and ‘Renaya’ (a green bean line) were chosen as the experimental materials. Genetic analysis indicated that a single recessive gene, pv-ye, controls the golden pod trait. A candidate region of 4.24-Mb was mapped to chromosome A02 using bulked-segregant analysis coupled to whole genome sequencing. In this region, linkage analysis in an F2 population localized the pv-ye gene to an interval of 182.9-kb between the simple sequence repeat markers SSR77 and SSR93. This region comprised 16 genes in this region, comprising 12 annotated genes from the P. vulgaris database, and 4 functionally unknown genes. Combined with transcriptome sequencing, we identified Phvul.002G006200 as the potential candidate gene for pv-ye. Sequencing of Phvul.002G006200 identified a single nucleotide polymorphism (SNP) in pv-ye. This SNP is located in the coding region and is responsible for substituting a glutamic acid with an glutamine at position 416 of the pv-ye protein (E416Q). A pair of primers covering the SNP was designed and the fragment was sequenced to screen 316 F2 plants with the ‘A18-1’ phenotype, based on the different site. Our findings showed that the among the 316 mapped individuals, the SNP cosegregated with the ‘A18-1’ phenotype. The findings presented here could form the basis to reveal the mechanism of the golden pod trait in the common bean at the molecular level.
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Project description:P. syringae pv. phaseolicola is the causal agent of the halo blight disease of beans (Phaseolus vulgaris L). The disease attacks both foliage and pods of plant host. Many genes involve in pathogenicity and virulence are induced only in plant or in the presence of host components. In this work we investigated the effect of bean pod extract on the transcriptomic profile of the bacterium, when grown at low temperature in minimal medium with or without bean pod extract. Two RNA samples were compared, one prepared from cells grown in minimal medium M9 and the other from cells grown in minimal medium supplemented with bean pod extract.To control de biological variation that might interfere with data interpretation, a minimum of three biological replicates and two technical replicates (swap) were prepared.
2010-05-22 | E-GEOD-14625 | biostudies-arrayexpress
Project description:P. syringae pv. phaseolicola is the causal agent of the halo blight disease of beans (Phaseolus vulgaris L). The disease attacks both foliage and pods of plant host. Many genes involve in pathogenicity and virulence are induced only in plant or in the presence of host components. In this work we investigated the effect of bean pod extract on the transcriptomic profile of the bacterium, when grown at low temperature in minimal medium with or without bean pod extract.
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Project description:Experimental design: 1 genotypes: PI- (resistant USDA Plant Introduction (PI459025B) line containing SBR Rpp4 resistance gene) 2 treatments: Rub inoculation with BPMV-VIGS construct targeting the LRR region of Rpp4 candidate gene. This BPMV construct and the plant tissue used for microarray was described in Meyer et al. (2009) Plant Physiol. 150:295-307. Control plants were inoculated with empty BPMV vector. At three weeks after BPMV inoculation, all plants were inoculated with Soybean rust (Phakopsora pachyrhizi) isolate LA04-1. LA04-1 is a single spore isolate maintained at the Foreign Disease Weed Science Research Unit. 3 replications 1 time point: 14 days after inoculation TOTAL: 5 Affymetrix GeneChip(R) Soybean Genome Arrays LA04-1 treatment: 500,000 spores per ml in 0.01% Tween 20 ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Michelle Graham. The equivalent experiment is GM51 at PLEXdb.]
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