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Table 1 Functional evaluation of ItfWRKYs under abiotic stress

From: Genome-wide identification, characterisation and functional evaluation of WRKY genes in the sweet potato wild ancestor Ipomoea trifida (H.B.K.) G. Don. under abiotic stresses

Function known WRKYs related abiotic stressHomologous WRKYs in I. trifida
SpeciesProtein nameFunctionReferenceProtein nameProtein identify (%)Gene expression under abiotic stress
ArabidopsisAtWRKY25Overexpression enhanced heat resistance and confer salt tolerance[14]ItfWRKY28.150.59Under heat ↑
Under salt ↑
 AtWRKY26Overexpression enhanced heat resistance[14]ItfWRKY43.151.69Under heat ↑
 AtWRKY33High-temperature represses its expression and induces the expression of AtWRKY25 and AtWRKY26; and confer salt tolerance[14]ItfWRKY13.352.99Under heat ↓
Under salt ↑
 AtWRKY34Negative regulator in pollen specific cold response[16]ItfWRKY3849.34Under cold ↑
 AtWRKY39Overexpression enhanced heat stress resistance of transgenic plants[17]ItfWRKY44.251.30Under heat ↑
 AtWRKY57Induced by drought and its expression increase Arabidopsis drought tolerance[18]ItfWRKY484.93Under drought ↑
Triticum aestivumTaWRKY1Confer drought and/or heat resistance in Arabidopsis[18]ItfWRKY6564.00Under drought ↓
Under heat ↑
 TaWRKY2Confer transgenic plants tolerance to drought stress[69]ItfWRKY13.1
ItfWRKY13.3
49.49
49.49
Under drought ↓
Under drought ↓
 TaWRKY10Overexpression enhanced the tobacco drought and salt tolerance[21, 23]ItfWRKY4165.17Under salt ↑
Under drought ↑
 TaWRKY19Confer transgenic plants tolerance to drought stress[69]ItfWRKY7948.08Under drought ↑
 TaWRKY33Confer drought and/or heat resistance in Arabidopsis[18]ItfWRKY6741.43Under drought ↑
Under heat ↑
 TaWRKY44Confers transgenic tobacco multiple abiotic stress tolerances.[70]ItfWRKY7950.44Under salt ↑
Under drought ↑
Under heat ↑
Under cold ↑
Oryza.sativa LOsWRKY11Transgenic lines showed significant heat and drought tolerance[71]ItfWRKY6478.16Under heat ↓
Under drought ↑
 OsWRKY45Overexpression enhances salt and drought tolerance[19, 20]ItfWRKY7048.61Under salt ↓
Under drought ↓
 OsWRKY72Overexpression enhances salt and drought tolerance[19, 20]ItfWRKY7786.96Under salt ↑
Under drought ↑
Glycine maxGmWRKY13Transgenic plants increased sensitivity to salt and drought stress while decreased sensitivity to ABA[28]ItfWRKY4663.89Under salt ↑
Under drought ↑
 GmWRKY21Confer transgenic plant tolerance to cold stress[28]ItfWRKY4166.22Under cold ↑
 GmWRKY27Improved salt and drought tolerance by inhibiting expression of downstream gene GmNAC29[18, 72]ItfWRKY15.253.74Under salt ↑
Under drought ↓
 GmWRKY54Confer transgenic Arabidopsis plants tolerance to salt and drought[28]ItfWRKY6475.61Under salt ↑
Under drought ↑
Gossypium hirsutumGhWRKY17Overexpression increases Nicotiana tolerance to drought and salt stress[24]ItfWRKY3063.49Under drought ↓
Under salt ↓
 GhWRKY25Overexpression plants increased salt tolerance but reduced drought tolerance of A. thaliana[26]ItfWRKY1978.57Under salt ↑
Under drought ↓
 GhWRKY68Reduces resistance to salt and drought in transgenic Nicotiana benthamiana[75]ItfWRKY6475.58Under salt ↑
Under drought ↑
Dendranthma grandiflorumDgWRKY1Overexpression enhances salt tolerance[74]ItfWRKY7785.56Under salt ↑
 DgWRKY3Overexpression enhances salt tolerance[74]ItfWRKY7065.59Under salt ↓
Boea hygrometriaBhWRKY1Bind to BhGolS1 to activate the regulation of BhGolS1 under drought stress[27]ItfWRKY15.156.52Under drought ↑
Vitis viniferaVvWRKY24Be induced by cold treatment at all-time points[15]ItfWRKY4976.32Under cold ↑
Zea maysZmWRKY23Enhance tolerance to salt stress[25]ItfWRKY7250.00Under salt ↓
Brassica campestris sspBcWRKY46Overexpression increases A. thaliana tolerance to drought and salt stress[73]ItfWRKY3055.74Under salt ↓
Under drought ↓
  1. ↓ indicated decrease of gene expression level; ↑ indicated increase of gene expression level