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Genes with expression level regulated by genotype (N2 vs CB4856) and age at L3 larva and Late reproduction stage (96 hours at 24 centigrade). |
For model 2, authors used 100 permutations to estimate the FDR threshold. Per permutation, genotypes and ages were independently randomly distributed, keeping the among-gene structure intact. Then for each spot (23,232) on the array, model 2 was tested. The obtained P-values were used to estimate a threshold for each of the explanatory factors. Authors also used a genome-wide threshold of -log10 P-value = 2, which resembles an FDR of 0.072 and 0.060 for marker and the interaction age-marker for the developing worms and FDR of 0.050 and 0.065 for marker and age-marker for the aging worms. For the physiological age effect, authors used a log10 P-value = 8 in developing worms (0.012 FDR) and -log10 P-value = 6 (0.032 FDR). |
WBPaper00040858:eQTL_age_regulated_developing
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Genes with expression level regulated by genotype (N2 vs CB4856) at old adults stage (214 hours at 24 centigrade). |
For model 2, authors used 100 permutations to estimate the FDR threshold. Per permutation, genotypes and ages were independently randomly distributed, keeping the among-gene structure intact. Then for each spot (23,232) on the array, model 2 was tested. The obtained P-values were used to estimate a threshold for each of the explanatory factors. Authors also used a genome-wide threshold of -log10 P-value = 2, which resembles an FDR of 0.072 and 0.060 for marker and the interaction age-marker for the developing worms and FDR of 0.050 and 0.065 for marker and age-marker for the aging worms. For the physiological age effect, authors used a log10 P-value = 8 in developing worms (0.012 FDR) and -log10 P-value = 6 (0.032 FDR). |
WBPaper00040858:eQTL_regulated_aging
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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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Transcripts that showed significantly increased expression in eat-2(ad465);atfs-1(RNAi) animals comparing to eat-2(ad465) animals injected with empty vector. |
fold change > 2, FDR < 0.01 |
WBPaper00067391:atfs-1(RNAi)_upregulated_eat-2(ad465)
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Transcripts that showed significantly increased expression in eat-2(ad465);dve-1(RNAi) animals comparing to eat-2(ad465) animals injected with empty vector. |
fold change > 2, FDR < 0.01 |
WBPaper00067391:dve-1(RNAi)_upregulated_eat-2(ad465)
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heat-shock hlh-1 |
Genes enriched in HLH-1 heat shock dataset. |
A two-class unpaired analysis was performed to identify genes that are elevated 1.7-fold or greater when compared with the reference for each dataset, at a false discovery rate of 1.8% or less for M0 and 1.2% or less for the M24 datasets. |
WBPaper00031003:hlh_1_enriched
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Oxidative stress. |
Genes upregulated by oxidative stress. |
Assessed by SAM (Significance Analysis of Microarray) [false discovery rate (FDR) = 11%] |
WBPaper00034757:up_by_oxidative_stress
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4 hours of starvation. |
Genes with significantly increased expression in N2 animals after 4 hours of starvation. |
Differentially expressed genes were determined by ANOVA analysis using the Partek software package. |
WBPaper00047070:N2_starvation_upregulated
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Genes that showed significantly decreased expression after exposure to adsorbable organic bromine compounds (AOBr) contained in M. aeruginosa batch culture. |
Differentially expressed genes (DEGs) were identified with a random variance t-test and a significance analysis of microarrays (SAM) test. Genes were considered statistically significant if their p-value was less than 0.05, the false discovery rate less than 0.3, and the fold change compared to control at least <= 0.67 or >=1.5. |
WBPaper00046853:AOBr_M.aeruginosa-batch-culture_downregulated
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fasting |
Genes upregulated by fasting anytime between 9 hour to 12 hour time course in N2 worms. |
Hierarchical clustering analysis was done with squared Euclidean as the distance metric and average linkage as the cluster method by using GeneSpring GX. |
WBPaper00041960:N2_fasting_upregulated_9hto12h
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fasting |
Genes upregulated by fasting anytime during the 48 hour time course in N2 worms. |
Hierarchical clustering analysis was done with squared Euclidean as the distance metric and average linkage as the cluster method by using GeneSpring GX. |
WBPaper00041960:N2_fasting_upregulated_anytime
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Transcripts that showed significantly decreased 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)_downregulated_P.aeruginosa-infection
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Expression Pattern Group F, enriched for genes involved in embryonic development. These patterns have in common that they all have genes of which the expression goes up after the juvenile stage. The expression of the genes in these patterns remains high or even goes up after reproduction. |
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_F
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Genes predicted to be upregulated more than 2.0 fold in rde-3(r459) mutant worms as compared to wild-type animals (t-test P-value < 0.05). |
A t-test (5% confidence) was applied to the triplicate sample data for each transcript in each mutant to identify genes significantly elevated or decreased compared with the wild type. |
WBPaper00027111:rde-3(r459)_upregulated
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Bacteria infection: Photorhabdus luminescens |
Genes up-regulated in animals infected with Photorhabdus luminescens compared to the E. coli OP50 control after 24h of infection. |
MAANOVA and BRB-Array-Tools. |
WBPaper00030985:Photorhabdus_luminescens_upregulated
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Candidate daf-19 down regulated genes with a statistically significant signal variation of 1.5-fold or greater. These were identified using a class comparisons tool from BRB Array Tools. |
BRB Array Tools (version 3.3) was subsequently used to identify genes with a statistically significant variation in expression when comparing between the two classes defined in this study. The probability threshold was set at a maximum of 0.05 (p-value <= 0.05) for genes to be considered statistically different. Genes with a signal variation of 1.5-fold or greater were selectively identified for use in all subsequent experiments. To reduce the chances of false discoveries, a class comparison test was conducted using a multivariate permutation test with the confidence level of 97%. |
WBPaper00039866:ClassComp_daf-19_downregulated
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Genes that showed significantly decreased expression in daf-19(m86);daf-12(sa204) comparing to in daf-12(sa204), at 3-fold embryo stage. |
BRB Array Tools were used to identify genes with statistically significant variation in expression. The probability threshold was set at a maximum of 0.05 (p-value <= 0.05) for genes to be considered statistically differentially expressed in wild-type and mutant populations. Genes with a signal variation of 1.5-fold or greater were selected for subsequent experiments. To reduce false discoveries, a class comparison test was conducted using a multivariate per mutation test with a confidence level of 97% (L1 analysis) and 90% (adults). |
WBPaper00053550:daf-19(m86)_downregulated_3-fold-embryo
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