Table 3: List of genes confirmed to function in drought by transgenic studies in last three years.

Type of transgenic studySource of the geneGeneFunctionRelated mechanism/stressReference

Overexpression in A. thaliana From T. Aestivum WRKY2, WRKY19Transcription factor: WRKY type TFDrought[39]
Overexpression in A. thaliana From T. Aestivum MYB33 transcription factor: R2R3 type MYB TFDrought[38]
Overexpression in N. tabacum From T. Aestivum PIMP1Transcription factor: R2R3 type MYB TFDrought[34]
Overexpression in N. tabacum From T. Aestivum NAC (NAM/ATAF /CUC)Transcription factor: plant-specific NAC (NAM/ATAF/CUC) TFDrought[37]
Overexpression in A. thaliana From T. Aestivum ABC1Kinase: protein kinase ABC1 (activity of bc(1) complex)Drought[40]
Overexpression in A. thaliana From T. Aestivum SnRK2.4Kinase: SNF1-type serine/threonine protein kinaseDrought[41]
Overexpression in A. thaliana From T. Aestivum SnRK2.7Kinase: SNF1-type serine/threonine protein kinaseDrought[42]
Overexpression in A. thaliana From T. Aestivum CPProtein degradation: cysteine proteaseDrought[45]
Overexpression in A. thaliana From T. Aestivum CHPCHP rich zinc finger protein with unknown functionABA-dependent and -independent pathways[44]
Overexpression in N. tabacum From T. Aestivum EXPR23Cell wall expansion: expansinWater retention ability and osmotic potential[46]
Overexpression in A. thaliana From T. Aestivum TaSIPSalt induced protein with unknown functionDrought and salinity[61]
Overexpression in N. tabacum From T. Durum PIP1;1, PIP1;2Protective protein: aquaporinDrought [48]
Overexpression in T. aestivum From H. Vulgare HVAIProtective protein: LEADrought [62]
Transgenic ubiquitin: TaCHPCHPCHP rich zinc finger protein with unknown functionABA-dependent and -independent pathways[44]
TaABA08′OF1 deletion lineABA08ABA catabolism:
ABA 8′-hydroxylase
Drought [63]
VIGS silencing in T. dicoccoides ATG8Autophagy: autophagy related gene 8Drought [33]
VIGS silencing in T. aestivum Era1, Sal1 Enhanced response to ABA, inositol polyphosphate 1-phosphataseDrought [49]

ABA: abscisic acid; CHP: cysteine histidine proline; SNF: sucrose nonfermenting; PIMP: pathogen induced membrane protein; CP: cysteine protease; EXPR: expansin; PIP: plasma membrane intrinsic proteins; LEA: late embryogenesis abundant; HVA: Hordeum vulgare aleurone; TaSIP: Triticum aestivum salt induced protein; VIGS: virus induced gene silencing.