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Genes with expression level regulated by genotype (N2 vs CB4856) at Late reproduction stage (96 hours at 24 centigrade). |
Authors permuted transcript values and used a genome-wide threshold of log10 P-value = 2, which resembles a false discovery rate (FDR) of 0.0118. |
WBPaper00040858:eQTL_regulated_reproductive
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Bacteria infection: Enterococcus faecalis OG1RF. 16 hours of exposure after L4 larva stage at 25C. |
Transcripts that showed significantly decreased expression in N2 animals fed by E. faecalis strain OG1RF for 16 hours after L4 larva stage at 25C. |
DESeq2, fold change > 2. |
WBPaper00061081:E.faecalis_downregulated_N2
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Transcripts that showed significantly increased expression in sftb-1(cer6) deletion homozygous comparing to to in N2 animals at L4 larva stage. |
DESeq2, fold change > 2 |
WBPaper00058725:sftb-1(cer6)_downregulated
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Transcripts that showed significantly increased expression in ilc-17.1(syb5296) comparing to in N2 animals at L4 larva stage. |
DESeq2, fold change > 2, FDR < 0.05. |
WBPaper00066594:ilc-17.1(syb5296)_upregulated
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Transcripts that showed significantly increased expression in nas-38(ok3407) comparing to in N2. |
A feature was classified upregulated if its FDR-corrected p-value was <= 0.05 and fold change was >= 2. Analogously, a gene was classified downregulated if its FDR-corrected p-value was <= 0.05 and fold change was <= -2. |
WBPaper00060703:nas-38(ok3407)_upregulated
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Genes found to be regulated by low-copy overexpression of sir-2.1 with p < 0.014. |
N.A. |
WBPaper00026929:sir-2.1_overexpression_regulated
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Transcripts that showed significantly altered expression after 24 hour exposure to nitroguanidine (NQ). |
Multivariate permutation tests with random variance model implemented in BRB-Array Tools version 4.5 were performed to infer differentially expressed genes (DEGs). One thousand random permutations were computed per chemical class (i.e., a group of 16 arrays or samples). The confidence level of false discovery rate assessment was set at 80%, and the maximum allowed portion of false-positive genes was 10%. |
WBPaper00055899:nitroguanidine_regulated
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Genome-wide analysis of developmental and sex-regulated gene expression profile. |
self-organizing map |
cgc4489_group_12
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Germline-enriched and sex-biased expression profile cluster A. |
hierarchical clustering |
[cgc6390]:Cluster_A
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Transcripts that showed significantly decreased expression in rrf-3(pk1426) comparing to in N2 at L3 larva stage. |
DESeq2v 1.18.1, fold change > 1.5, adjusted p-value < 0.01. |
WBPaper00056169:rrf-3(pk1426)_downregulated_L3
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Expression Pattern Group D, enriched for genes involved in catabolic processes. |
The significance (P 0.0001) of the relative age (time) was used to determine if a gene was differentially expressed between the three age (time) groups. The effect of this factor explaining gene expression differences was used to determine if the expression went up or down during the two age/time periods (t1 - t2 and t2 -t3). Authors used a permutation approach to determine the thresholds for the different mapping strategies. For each of the used models for eQTL mapping, authors used 23,000 permutations. For each permutation, authors randomly picked a spot; each spot could only be picked once. The gene expression and relative lifespan values were than randomly distributed over the RILs (and time points) and used for mapping. In this way, authors obtained a threshold for each of the explaining factors. For the single time points, authors used a FDR of 0.01 to adjust for multiple testing. The genome-wide threshold for this FDR is -log10 P = 3.8 for each of the three time points. For the combined models (t1 to t2 and t2 to t3), authors used a genome-wide threshold of -log10 P = 4, which resembles an FDR of 0.006, 0.001, and 0.006 for marker, age, and the interaction between marker and age, respectively. To determine the threshold for the single gene examples, authors used 1000 permutations as in the genome-wide threshold. The difference is that they use the gene under study in all of the permutations. The P-values for the gene specific thresholds were determined at FDR = 0.05. |
WBPaper00036286:Pattern_D
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Acidic Environment: PH 4.33 vs. PH 6.33. |
Transcripts that showed significantly increased expression after 3 hours of exposure to acidic environment (PH 4.33), comparing to control animals exposed to PH 6.33 environment. |
DESeq2 (1.16.1). The Benjamini and Hochberg's approach was used to adjust the resulting P-values to control the false discovery rate. Corrected value of P < 0.05 and fold change > 2 were set as the threshold for significantly differential expression. |
WBPaper00060434:pH4.33_vs_pH6.33_uprgulated
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male soma-enriched |
Comparisons were made between genotypes by subtracting the mean log value of one ratio from another, and the significance of the difference was evaluated using Student t-test for two populations. For the fem-3(gf) versus fem-1(lf) direct comparison, authors performed the same analysis, except they used a Students t-test for one population. Author chose a combination of a twofold difference with a t value exceeding 99% confidence (P < 0.01), because these criteria allowed the inclusion of essentially all genes that had previously been identified as germline-enriched in a wt/glp-4 hermaphrodite comparison. Additionally, requiring a twofold difference reduced false positives, as the number of genes with two-fold difference and a P<0.01 only included ~100 genes more than with P < 0.001, and almost all genes showed germline expression by in situ hybridization. |
[cgc6390]:male_soma-enriched
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Transcripts that showed significantly increased expression in smn-1(ok355) heterozygots using balancer hT2 comparing to in N2. |
DESeq v1.14.0, log2FC > 1, q <= 0.05. |
WBPaper00056809:smn-1(ok355)_upregulated
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Up-regulated genes under 0.5mg/l CPF treatment at 16 centigrade. |
The Rank Product package was used to identify the differentially expressed genes between controls and treatment in each experiment. Briefly, genes were ranked based on up- or downregulation by the treatment in each experiment. Then, for each gene a combined probability was calculated as a rank product (RP). The RP values were used to rank the genes based on how likely it was to observe them by chance at that particular position on the list of differentially expressed genes. The RP can be interpreted as a p-value. To determine significance levels, the RP method uses a permutation-based estimation procedure to transform the p-value into an e-value that addresses the multiple testing problem derived from testing many genes simultaneously. Genes with a percentage of false-positives (PFP) < 0.05 were considered differentially expressed between treatments and control in each experiment. This method has the advantage to identify genes with a response to the toxicants even when the absolute effect of the response was low. Because authors used sub-lethal concentrations of the toxicants, methods that use thresholds based on absolute fold change would not identify small changes in gene expression. Moreover, RP has proved to be a robust method for comparing microarray data from different sources and experiments. |
WBPaper00037113:CPF_16C_up-regulated
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Transcripts that showed significantly increased expression in unc-30(ok613) animals at L4 larva stage after 4 hours of Pseudomonas aeruginosa infection, comparing to infected N2 animals. |
Genes exhibiting at least two-fold change were considered differentially expressed. |
WBPaper00061439:unc-30(ok613)_upregulated_P.aeruginosa-infection
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Genes found to be regulated in daf-16(mgDf50) by resveratrol treatment with p < 0.01. |
N.A. |
WBPaper00026929:Resveratrol_regulated_daf-16
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Genes with differential expression under 0.5mg/l Chlorpyrifos (CPF) and 0.5mg/l Diazinon (DZN) treatment at 24 centigrade. |
To identify the differentially expressed genes in each treatment authors used linear models per toxicant and temperature (gene expression = Toxicant (effect) + error). The lm function in R stats package was used to implement the linear models analysis with recommended default options. For threshold determination authors used a permutation approach. For each of the 23,232 permutations used authors randomly picked a transcript (array spot), which could only be picked once. Authors combined all the expression values of this transcript and randomly distributed them over the replicates and used them in the linear model. In this way authors obtained a threshold for each of the toxicants. Authors used a -log10 p-value 2 as common threshold for the analysis, which resembles to the following FDR per toxicant: 0.0155 for CPF at 24 centigrade, 0.0148 for DZN at 24 centigrade, 0.0168 for CPF+DZN at 24 centigrade, 0.0142 for CPF at 16 centigrade, 0.0151 for DZN at 16 centigrade, and 0.0148 for CPF+DZN, at 16 centigrade. |
WBPaper00040210:Chlorpyrifos_Diazinon_24C_regulated
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Genes with expression level regulated by genotype (N2 vs CB4856) at Old adults stage (214 hours at 24 centigrade). |
Authors permuted transcript values and used a genome-wide threshold of log10 P-value = 2, which resembles a false discovery rate (FDR) of 0.0136. |
WBPaper00040858:eQTL_regulated_old
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Genes that showed decreased expression in ahr-1(hu145) comparing with in N2 in L1 larva. |
Over- and under-expressed genes were determined by > 2 fold change threshold and a subsequent t-test (p < 0.05) |
WBPaper00035560:ahr-1_downregulated
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Transcripts that showed significantly decreased expression in ash-2(RNAi) comparing to in wild type animals injected with vector. |
Differential mRNA expression using DESeq2. mRNAs with a FDR < 0.05 and fold change > 2 considered differentially expressed. |
WBPaper00066232:ash-2(RNAi)_downregulated_WT
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Transcripts that showed significantly increased expression in diploid N2 animals after exposure to 5 uM doxorubicin for 72 hours at 15C from L1 to L4 larve stage. |
DESeq2 R package (1.20.0), fold change > 2, and FDR < 0.05. |
WBPaper00066110:Doxorubicin_upregulated_diploid
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Transcripts that showed significantly increased expression in tetraploid N2 comparing to diploid N2 animals at L4 larva stage. |
DESeq2 R package (1.20.0), fold change > 2, and FDR < 0.05. |
WBPaper00066110:tetraploid_vs_diploid_upregulated
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Genes up-regulated following nhr-25(RNAi). |
Pair-wise significance testing (mutant/RNAi vs. wild-type/vector) was performed using the Bioconductor package limma and p-values were initially corrected for multiple testing using the false discovery rate (FDR) method of Benjamini and Hochberg. Authors defined differential expression as log2(ratio) >= 0.848 with the FDR set to 5%, and p-value <= 0.001. |
WBPaper00045015:nhr-25(RNAi)_upregulated
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Transcripts that showed significantly increased expression in ogt-1(ok1474) comparing to in wild type. |
DESeq2, fold change > 2, FDR < 0.05. |
WBPaper00066485:ogt-1(ok1474)_upregulated_WholeAnimal
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Expression Pattern Group I, enriched for genes involved in transport. |
The significance (P 0.0001) of the relative age (time) was used to determine if a gene was differentially expressed between the three age (time) groups. The effect of this factor explaining gene expression differences was used to determine if the expression went up or down during the two age/time periods (t1 - t2 and t2 -t3). Authors used a permutation approach to determine the thresholds for the different mapping strategies. For each of the used models for eQTL mapping, authors used 23,000 permutations. For each permutation, authors randomly picked a spot; each spot could only be picked once. The gene expression and relative lifespan values were than randomly distributed over the RILs (and time points) and used for mapping. In this way, authors obtained a threshold for each of the explaining factors. For the single time points, authors used a FDR of 0.01 to adjust for multiple testing. The genome-wide threshold for this FDR is -log10 P = 3.8 for each of the three time points. For the combined models (t1 to t2 and t2 to t3), authors used a genome-wide threshold of -log10 P = 4, which resembles an FDR of 0.006, 0.001, and 0.006 for marker, age, and the interaction between marker and age, respectively. To determine the threshold for the single gene examples, authors used 1000 permutations as in the genome-wide threshold. The difference is that they use the gene under study in all of the permutations. The P-values for the gene specific thresholds were determined at FDR = 0.05. |
WBPaper00036286:Pattern_I
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Transcripts that showed significantly increased expression in ceh-37(ok642) comparing to in N2 |
Fold change > 2, FDR < 0.05 |
WBPaper00067667:ceh-37(ok642)_upregulated
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Transcripts that showed significantly increased expression in nhr-8(hd117) comparing to in N2. |
Differentially expressed genes were identified using Sleuth (version 0.30.0). |
WBPaper00062446:nhr-8(hd117)_upregulated
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Transcripts that showed significantly increased expression in animals exposed to Camptothecin for 3 hours at 2C. |
p < 0.01, logFC > 1 or p < 0.01, logFC < -1. |
WBPaper00066610:Camptothecin_upregulated_2C_3h
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Transcripts that showed significantly increased expression by somatic RAGA-1 degradation. |
DESeq2_1.34.0, FDR < 0.01, fold change > 2. |
WBPaper00066005:RAGA-1_degradation_somatic_upregulated
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