Split-Splines with contrasts in Moanin (root, preflowering, BT642Year2)
This document has last been compiled on 2021-12-14 22:49:22.
Data Entry
## Reading in metadata from file: results/BT642Year2/data/root_meta.txt
## Reading in data from file: results/BT642Year2/data/root_normCounts.txt## Total number of root samples: 133
## Total number of genes in root samples: 23916
## No additional bad samples to remove (probably removed during normalization)
## Removing the 13 samples identified as not part of the main experiment, from the root samples
## After filtering root samples: 120 samples, 23916 genesIn this document, we find genes that are globally DE, meaning that we search for any difference between the expression of the gene. We do this via splines, where for each gene we fit a spline function to the expression levels within each condition and compare whether those splines are statistically different between the conditions.
Here we use “split-splines” meaning we fit a different spline function to before and after the watering change (first time point after Day 56 for Preflowering and first time point after Day 63 for post-flowering).
(Note that currently we are not expanding the postflowering condition points into control like Nelle did…)
Create Moanin Object
## Dimensions of data matrix restricting to designated timepoints: 23916 x 88
## The unique time points are:
## 21, 28, 35, 42, 49, 56, 58, 59, 61, 63, 70, 77, 84, 91, 105
## The conditions and number of samples are:
##
## Control.BT642 Preflowering.BT642
## 45 43## Moanin object on 88 samples containing the following information:
## Group variable given by 'Group' with the following levels:
## Control.BT642 Preflowering.BT642
## 45 43
## Time variable given by 'Time.Point'
## Basis matrix with 16 basis_matrix functions
## Basis matrix was constructed with the following spline_formula
## ~Group:discont_basis(Time.Point, dfPre = 3, dfPost = 3, discont = pre_watering_time, intercept = TRUE, type = "bs") + 0
##
## Information about the data (a SummarizedExperiment object):
## class: SummarizedExperiment
## dim: 23916 88
## metadata(0):
## assays(1): ''
## rownames(23916): SbiBTX642.01G000200.v1.1 SbiBTX642.01G000400.v1.1 ...
## SbiBTX642.K017900.v1.1 SbiBTX642.K018200.v1.1
## rowData names(0):
## colnames(88): 0705174R01 0705174R14 ... 0927173R05 0927173R12
## colData names(66): Barcode Genotype ... Group WeeklyGroupWe separate out the results into genotype-differences, RT430, and BT642 results.
We save results into comma-deliminated file in results/BT642Year2/DE_splitsplines in the following files:
## Saving matrix of results on 23916 genes to comma-deliminated file in results/BT642Year2/DE_splitsplines.## [1] "root_BT642_Preflowering_splitsplinesDE_all.csv"Summary of significant genes
## Number of significant genes:## BT642: 15882Visualization of BT642 Results
## Contrast matrix:
## Contrasts
## Levels Preflowering.BT642-Control.BT642
## Control.BT642 -1
## Preflowering.BT642 1Volcano plots
We will plot volcano plots of the genes based on the calculated log-fold-change (lfc) and the adjusted p-value (qval).
volcano_plot_moanin(moanin_results_all, target, lfc_thres=1, pval_thres=0.05)
Splines for top 20 genes
Here we plot the spline fits for the top 20 genes.
top_de_genes <- plot_top_de_genes(moaninObj = moaninObj, moanin_results = moanin_results_all, target = target, n_top = 20,lfc_thres=1, pval_thres=0.05,drought=condition)## 558 selected after filtering based on p-value and log fold change
## Splines for the top 20 genes in BT642Year2, BT642 Preflowering:top_de_genes## pval qval lfc
## SbiBTX642.09G124700.v1.1 2.611317e-22 2.518236e-20 4.084262
## SbiBTX642.01G444400.v1.1 1.765253e-21 1.379666e-19 3.629043
## SbiBTX642.09G234300.v1.1 1.464325e-18 5.630353e-17 3.301943
## SbiBTX642.06G102900.v1.1 1.947938e-20 1.150228e-18 3.108730
## SbiBTX642.03G394000.v1.1 2.398980e-31 5.215819e-28 3.067468
## SbiBTX642.03G088500.v1.1 6.355971e-23 7.005042e-21 3.035866
## SbiBTX642.03G138200.v1.1 7.942314e-27 2.435236e-24 3.001222
## SbiBTX642.03G042800.v1.1 2.664512e-10 1.844413e-09 2.974222
## SbiBTX642.07G120400.v1.1 1.429211e-20 8.764363e-19 2.969370
## SbiBTX642.01G012200.v1.1 2.379083e-23 2.948091e-21 2.938066
## SbiBTX642.01G465400.v1.1 1.305759e-17 4.103617e-16 2.863950
## SbiBTX642.03G087800.v1.1 4.333098e-13 5.314378e-12 2.837441
## SbiBTX642.08G106500.v1.1 6.359936e-20 3.209948e-18 2.825390
## SbiBTX642.09G183600.v1.1 3.120118e-16 7.301442e-15 2.601132
## SbiBTX642.03G313100.v1.1 1.957445e-20 1.150228e-18 2.577886
## SbiBTX642.03G012600.v1.1 6.687234e-32 1.999149e-28 2.514252
## SbiBTX642.02G327400.v1.1 1.058397e-24 1.947126e-22 2.485653
## SbiBTX642.06G144300.v1.1 7.684953e-17 2.028624e-15 2.456056
## SbiBTX642.06G006800.v1.1 5.386514e-10 3.537174e-09 2.427347
## SbiBTX642.08G086000.v1.1 4.076959e-17 1.153900e-15 2.415387
Visualization of RT430 Results
Visualization of Differences between genotypes
Session Info
## [1] "2021-12-14 22:50:07 PST"## R version 4.1.2 (2021-11-01)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Ubuntu 20.04.3 LTS
##
## Matrix products: default
## BLAS: /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3
## LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/liblapack.so.3
##
## locale:
## [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
## [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
## [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
## [7] LC_PAPER=en_US.UTF-8 LC_NAME=C
## [9] LC_ADDRESS=C LC_TELEPHONE=C
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
##
## attached base packages:
## [1] stats4 splines stats graphics grDevices utils datasets
## [8] methods base
##
## other attached packages:
## [1] moanin_1.1.2 topGO_2.44.0
## [3] SparseM_1.81 GO.db_3.13.0
## [5] AnnotationDbi_1.56.1 graph_1.72.0
## [7] SummarizedExperiment_1.24.0 Biobase_2.54.0
## [9] GenomicRanges_1.46.0 GenomeInfoDb_1.30.0
## [11] IRanges_2.28.0 S4Vectors_0.32.2
## [13] BiocGenerics_0.40.0 MatrixGenerics_1.6.0
## [15] matrixStats_0.61.0 MASS_7.3-54
## [17] reshape2_1.4.4 forcats_0.5.1
## [19] stringr_1.4.0 purrr_0.3.4
## [21] readr_2.0.2 tidyr_1.1.4
## [23] tibble_3.1.6 tidyverse_1.3.1
## [25] dplyr_1.0.7 ggplot2_3.3.5
## [27] knitr_1.36 rmarkdown_2.11
## [29] SCF_4.1.0
##
## loaded via a namespace (and not attached):
## [1] bitops_1.0-7 fs_1.5.0 bit64_4.0.5
## [4] lubridate_1.8.0 httr_1.4.2 tools_4.1.2
## [7] backports_1.3.0 bslib_0.3.1 utf8_1.2.2
## [10] R6_2.5.1 DBI_1.1.1 colorspace_2.0-2
## [13] withr_2.4.2 gridExtra_2.3 tidyselect_1.1.1
## [16] bit_4.0.4 compiler_4.1.2 cli_3.1.0
## [19] rvest_1.0.2 xml2_1.3.2 DelayedArray_0.20.0
## [22] sass_0.4.0 scales_1.1.1 digest_0.6.28
## [25] XVector_0.34.0 pkgconfig_2.0.3 htmltools_0.5.2
## [28] highr_0.9 limma_3.50.0 dbplyr_2.1.1
## [31] fastmap_1.1.0 rlang_0.4.12 readxl_1.3.1
## [34] rstudioapi_0.13 RSQLite_2.2.8 jquerylib_0.1.4
## [37] generics_0.1.1 jsonlite_1.7.2 gtools_3.9.2
## [40] RCurl_1.98-1.5 magrittr_2.0.1 GenomeInfoDbData_1.2.7
## [43] Matrix_1.3-4 Rcpp_1.0.7 munsell_0.5.0
## [46] fansi_0.5.0 viridis_0.6.2 lifecycle_1.0.1
## [49] edgeR_3.36.0 stringi_1.7.5 yaml_2.2.1
## [52] ClusterR_1.2.5 zlibbioc_1.40.0 plyr_1.8.6
## [55] blob_1.2.2 grid_4.1.2 crayon_1.4.2
## [58] lattice_0.20-45 Biostrings_2.60.2 haven_2.4.3
## [61] KEGGREST_1.34.0 hms_1.1.1 locfit_1.5-9.4
## [64] pillar_1.6.4 reprex_2.0.1 glue_1.5.0
## [67] evaluate_0.14 modelr_0.1.8 png_0.1-7
## [70] vctrs_0.3.8 tzdb_0.2.0 cellranger_1.1.0
## [73] gtable_0.3.0 assertthat_0.2.1 cachem_1.0.6
## [76] xfun_0.28 broom_0.7.10 viridisLite_0.4.0
## [79] memoise_2.0.0 gmp_0.6-2.1 ellipsis_0.3.2