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[null,"Additional Table 2.  Functional categories and patterns of differential expression.  Columns are titled according to the pattern of differential expression, where “U” means up-regulated, “D” means “down-regulated”, “N” means “not differentially expressed”.  The patterns are separated into 3 groups according to their relevance to response of root elongation to stress.  For example, in the first column of numbers the pattern is UNN, indicating up-regulated in C1 but not in C2 or C2/3. (C1 and C2 are the comparisons of genes expressed in water-stressed and well-watered in region 1 and region 2, respectively.  C2/3 is the comparison of  genes expressed in region 2 of stressed roots with region 3 of well-watered roots.)  These genes are candidates for the response to stress that may determine growth patterns. Maturation-related genes are defined as differentially expressed in region 2 alone. The third group of genes are differentially expressed in C2/3 alone and are not considered further in this study.  Empty cells have zero genes."]
[null,null,"Candidates for primary response to stress in maintenance of root elongation",{"$nulls":12},"Root maturation related",null,null,"Ambiguous role in stress"]
[null,null,"Differential expression found in either C1, or C2 and C2/3, or both.",{"$nulls":12},"Differential expression found in C2 only",null,null,"Differential expression found in C2/3 only"]
[null,"pattern of expression:","UNN","NUU","DNN","UUN","UUU","NDD","UNU","DND","DDN","DDD","NUD","NDU","Sum 1","NUN","NDN"," Sum 2","NND","NNU","Sum 3","Total"]
[null,"membrane transport",3,1,"",4,2,1,"","","","","","",11,25,0,25,6,4,10,46]
[null,"intracellular signalling",4,4,3,"","",1,"","","","","","",12,16,6,22,4,6,10,44]
[null,"carbon metabolism",7,"","",1,4,3,1,"","","","","",16,9,5,14,5,3,8,38]
[null,"transcription factor",3,4,2,"","","","",1,"","","","",10,15,1,16,4,2,6,32]
[null,"miscellaneous",3,3,1,1,"",1,"","","","",1,"",10,13,3,16,4,1,5,31]
[null,"ROS",6,2,"",6,2,1,"","","","","","",17,6,1,7,3,3,6,31]
[null,"nitrogen metabolism","",6,1,"",2,"",1,1,"",1,"","",12,11,2,13,2,"",2,27]
[null,"lipid metabolism",1,2,"","",1,1,"","","","","","",5,5,9,14,4,1,5,24]
[null,"DNA-binding",1,1,"","","","",1,"","","","","",3,7,9,16,1,1,2,21]
[null,"proteolysis",2,"",3,"","","","","","","","","",5,9,1,10,4,1,5,20]
[null,"pathogenesis",2,1,1,1,1,"","","","","","","",6,5,1,6,3,3,6,18]
[null,"protein synthesis",2,2,1,"","","","","","","","","",5,6,2,8,1,4,5,18]
[null,"cell wall",1,1,"",1,"","","","","","","","",3,4,0,4,4,5,9,16]
[null,"hormones",2,1,1,"","","","","","","","","",4,8,2,10,1,1,2,16]
[null,"wall loosening",2,2,"",1,"","",1,"","","","","",6,4,0,4,2,4,6,16]
[null,"lignin-flavonoids",1,"",1,"","",1,"",1,"","","","",4,5,0,5,2,"",2,10]
[null,"cytoskeleton",1,"","","","","","","","","","","",1,2,4,6,1,1,2,9]
[null,"toxic metals",1,"",2,"","","","","",2,"","","",5,4,0,4,"","",null,9]
[null,"heat shock proteins",2,"",1,1,"","","","","","","","",4,1,2,3,"",1,1,8]
[null,"mineral nutrition","","","","","","","","","","","","",null,4,0,4,2,2,4,8]
[null,"copper-containing",1,"",2,"","","","","","","","","",3,0,3,3,1,"",1,7]
[null,"cytochromeP450",1,"","","","","","","","","","","",1,2,0,2,1,1,2,5]
[null,"dehydrin","",1,"","","","",1,"","","","","",2,2,0,2,"","",null,4]
[null,"electron transport","","","","","","","","","","","","",null,2,0,2,2,"",2,4]
[null,"cell division","","","","","","","","","","","","",null,"","",null,1,2,3,3]
[null,"unknown",23,15,6,4,2,5,"",1,2,1,"",1,60,71,31,102,33,18,51,212]
[]
[null,"sum",69,46,25,20,14,14,5,4,4,2,1,1,205,236,82,318,91,64,155,678]