Expression Analysis of Sugarcane Aquaporin Genes under Water Deficit

Table 2

Putative sugarcane aquaporin isoforms (42) based on unitags of root dehydration (24 h) observed in the two main contrasts of HT-SuperSAGE libraries.

Aquaporin isoform	SD24T versus SDTC			SD24S versus SDSC
	UR	DR	n.s.	UR	DR	n.s.
SsPIP1-1	1	—	2	—	1	1
SoPIP1-2	1	2	3	2	1	—
PvPIP1-2	—	—	1	—	—	1
SoPIP1-3/PIP1-4	3	24	26	7	7	25
OsPIP1-3/PIP1-4	1	—	2	—	1	—
SoPIP1-5	1	2	2	3	—	2
PvPIP1-5	—	—	2	—	—	1
SoPIP2-1	2	14	23	4	24	19
ZmPIP2-1	—	2	4	1	—	4
OsPIP2-1	1	—	2	—	1	2
PvPIP2-1	—	1	9	1	—	6
TaPIP2-1	—	2	4	1	—	2
OsPIP2-2	—	—	2	—	—	3
PvPIP2-2	—	2	6	1	—	4
OsPIP2-3	—	—	1	—	—	1
ZmPIP2-3	—	—	1	—	—	1
SoPIP2-4	3	4	6	2	3	6
OsPIP2-4	—	2	—	1	2	—
PvPIP2-4	—	4	2	1	—	5
FaPIP2-4	—	3	7	3	—	3
SoPIP2-5	1	1	—	—	—	2
TaPIP2-5	—	1	4	1	—	2
SoPIP2-6	2	—	2	2	—	2
TaPIP2-6	—	1	3	1	—	2
SsTIP1-1	4	9	14	6	5	18
SoTIP1-1	3	7	10	6	7	11
SbTIP1-1	1	—	1	—	1	1
ZmTIP1-1	—	—	1	—	—	—
HvTIP1-1	1	—	—	—	1	—
TaTIP1-1	—	1	4	—	1	4
TaTIP1-2	—	1	—	—	—	1
SoTIP2-2	2	9	9	1	8	11
HvTIP2-2	1	—	1	—	—	1
PvTIP2-2	—	—	2	—	—	2
SoTIP2-3	5	5	10	3	3	5
PvTIP2-3	—	—	3	—	—	3
SoTIP4-2	—	—	1	—	—	1
PvNIP1-1	—	1	—	—	1	1
SoNIP1-2	—	—	1	—	—	1
SoNIP3-1	1	2	12	—	1	10
SoSIP1-1	1	—	2	1	—	1
SoSIP1-2	3	5	2	2	1	10

Isoforms are preceded by the abbreviated species name (Fa: Festuca arundinacea; Hv: Hordeum vulgare; Os: Oryza sativa; Pv: Panicum virgatum; Sb: Sorghum bicolor; So: Saccharum officinarum; Ss: Saccharum spp.; Ta: Triticum aestivum; Zm: Zea mays). HT-SuperSAGE libraries: SD24T (bulk of tolerant genotypes under stress; SD24S (bulk of sensitive genotypes under stress); SDTC (control bulk of tolerant genotypes); SDSC (control bulk of sensitive genotypes). DR: down-regulated; UR: up-regulated. n.s.: not significant at P < 0.05.