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auxin_embryo_k9_chip_deseq2.R
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auxin_embryo_k9_chip_deseq2.R
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### Analysis of eMF73 auxin treated embryos
library("ggplot2", lib.loc="~/Library/R/3.6/library")
library("DESeq2")
library("pheatmap")
library(ggrepel)
library(stringr)
library(svglite)
library("ggpubr", lib.loc="~/Library/R/3.6/library")
directory <- "~/Dropbox (hannonlab)/Sequencing Data/Roo/chipseq/emf97/individual/count/"
sampleFiles <- grep("emf97_k9_.",list.files(directory),value=TRUE)
sampleFiles <- sampleFiles[-c(1:2)]
sampleCondition <- as.character(replicate(3,c("ctrl", "auxin")))
sampleBatch <- as.character(c("a","a","b","b", "c", "c"))
sampleName <- gsub(".comb.txt*", "", sampleFiles)
sampleTable <- data.frame(sampleName = sampleName,
fileName = sampleFiles,
condition = sampleCondition,
batch = sampleBatch)
ddsHTSeq <- DESeqDataSetFromHTSeqCount(sampleTable = sampleTable,
directory = directory,
design= ~ batch + condition)
ddsHTSeq$condition <- factor(ddsHTSeq$condition, levels = c("ctrl","auxin"))
dds <- DESeq(ddsHTSeq)
res <- results(dds)
resLFC <- lfcShrink(dds, coef="condition_auxin_vs_ctrl", type="apeglm")
#write.table(resLFC, "~/Dropbox (hannonlab)/Sequencing Data/Roo/rnaseq/emf91/emf91_3_rep_resLFC.txt", quote = F, sep = "\t")
#write.table(res, "~/Dropbox (hannonlab)/Sequencing Data/Roo/rnaseq/emf91/emf91_3_rep_res.txt", quote = F, sep = "\t")
resOrdered <- res[order(res$pvalue),]
plotMA(res, ylim=c(-4,4))
plotMA(resLFC, ylim=c(-2,2))
results <- as.data.frame(resLFC)
results$te <- grepl("FBgn", rownames(results))
results$gene <- str_split_fixed(rownames(results), "_", 2)[,2]
results[,1] <- log10(results[,1])
rld <- rlog(dds, blind=FALSE)
plotPCA(rld, intgroup=c("condition"))
ggplot(results, aes(x=baseMean, y=log2FoldChange)) +
geom_point(data=results[which(results[,6]=='TRUE'& results[,5] > 0.05),], aes(x=baseMean, y=log2FoldChange), colour="darkgreen", size=2, shape=16) +
geom_point(data=results[which(results[,6]=='TRUE'& is.na(results[,5])),], aes(x=baseMean, y=log2FoldChange), colour="darkgreen", size=2, shape=16) +
geom_point(data=results[which(results[,6]=='TRUE'& results[,5] < 0.05 & results[,2] < 1 & results[,2] > -1),], aes(x=baseMean, y=log2FoldChange), colour="purple", size=2, shape=16) +
#geom_point(data=results[which(results[,6]=='TRUE'& results[,5] < 0.05 & results[,2] > 1),], aes(x=baseMean, y=log2FoldChange), colour="red", size=2) +
geom_point(data=results[which(results[,6]=='TRUE'& results[,5] < 0.05 & results[,2] < -1),], aes(x=baseMean, y=log2FoldChange), colour="blue", size=2) +
geom_text_repel(data=results[which(results[,6]=='TRUE'& results[,5] < 0.05),], aes(label=gene,hjust=0, vjust=0)) +
geom_abline(intercept = 1, slope = 0, linetype="dotted", colour="red") +
geom_abline(intercept = 0, slope = 0, linetype="dotted", colour="black") +
geom_abline(intercept = -1, slope = 0, linetype="dotted", colour="blue") +
scale_x_continuous(expand = c(0, 0)) +
scale_y_continuous(expand = c(0, 0)) +
coord_cartesian(ylim = c(-1.6,1.6),xlim = c(1,6)) +
ylab("log2 Fold Change auxin vs ctrl") +
xlab("log10 mean signal") +
theme_classic() +
theme(axis.text.x = element_text(size = 15, angle = 0, hjust = .5, vjust = .5, face = "plain"),
axis.text.y = element_text(size = 15, angle = 0, hjust = .5, vjust = .5, face = "plain"),
axis.title.x = element_text(size = 15, angle = 0, hjust = .5, vjust = .5, face = "plain"),
axis.title.y = element_text(size = 15, angle = 90, hjust = .5, vjust = .5, face = "plain"))
ggsave(filename="~/Dropbox (hannonlab)/Fabry_2020/updated_figures_feb21/figure4/update_fig4_f.pdf", plot = last_plot(), width=5, height=5)
#ggsave(filename="~/Dropbox (hannonlab)/Sequencing Data/Roo/chipseq/emf97/individual/count/emf97_deseq_chip_analysis_te.svg", plot = last_plot(), width=5, height=5)