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Table 4 Biological processes with significant genes over-represented under mild or severe chromic N stress

From: Global transcription profiling reveals differential responses to chronic nitrogen stress and putative nitrogen regulatory components in Arabidopsis

Biological Process No. in Genome % in Genome Under mild N stress Under severe N stress
    No. in List % in List P-value No. in List % in List P-value
Up-regulated         
response to abiotic stimulus 1091 6.0 16 40 4.2E-10 39 19.3 7.3E-11
response to stress 945 5.2 14 35 6.4E-09 23 11.4 0.0004
secondary metabolism 249 1.4 6 15 1.6E-05 15 7.4 1.3E-07
response to oxidative stress 140 0.8 5 12.5 1.4E-05 8 4.0 0.0002
flavonoid biosynthesis 30 0.2 2 5 0.002 6 3.0 8.4E-07
anthocyanin biosynthesis 8 0.04 2 5 0.007 3 1.5 7.3E-05
phenylpropanoid biosynthesis 79 0.4     9 4.5 2.3E-07
response to abscisic acid stimulus 113 0.6     9 4.5 4.8E-06
organ senescence 12 0.07     3 1.5 0.0003
starch biosynthesis 7 0.04     2 1.0 0.002
Down-regulated         
primary metabolism 5170 28.5     58 43.0 0.0002
biosynthesis 1269 7.0     28 20.7 1.6E-07
protein biosynthesis 500 2.8     17 12.6 1.9E-07
response to auxin stimulus 191 1.1     10 7.4 1.7E-06
generation of precursor metabolites and energy 451 2.5     10 7.4 0.002
nitrogen compound metabolism 276 1.5     7 5.2 0.005
response to cytokinin stimulus 31 0.2     5 3.7 3.1E-06
main pathways of carbohydrate metabolism 95 0.5     4 3.0 0.006
photosynthesis 44 0.2     3 2.2 0.004
  1. The gene list was imported into GeneSpring. The number of genes in each biological process either in a whole genome (No. in Genome), or in the list (No. in list), as well as their corresponding percentage and p-value was generated by GeneSpring.