Table 2.

Transcriptional Regulators Implicated in ABA Signaling

Binding Site/Factor ClassGenusFactorReferences
ABA response elements (ABREs)/bZIPsArabidopsisABI5/AtDPBF1
 AtDPBF2
 AtDPBF3/AREB3
 AtDPBF4
 AtDPBF5/ABF3
 ABF1
 ABF2/AREB1
 ABF4/AREB2Choi et al., 2000; Finkelstein and Lynch, 2000a; Lopez-Molina and Chua, 2000; Uno et al., 2000
GBF3Lu et al., 1996
HelianthusDPBF1, -2 and -3Kim et al., 1997; Kim and Thomas, 1998
OryzaTRAB1Hobo et al., 1999
PhaseolusPvZIP6AF369792a
ROM2 (repressor)Chern et al., 1996
TriticumEmBP-1Guiltinan et al., 1990
RY/Sph elements/B3 domain proteinsArabidopsisABI3Giraudat et al., 1992
AvenaAfVP1Jones et al., 1997
CraterostigmaCpVP1Chandler and Bartels, 1997
DaucusC-ABI3Shiota et al., 1998
PhaseolusPvALFBobb et al., 1995
PopulusPtABI3Rohde et al., 1998
OryzaOsVP1Hattori et al., 1994
TriticumTaVP1Bailey et al., 1999
Zea maysVP1McCarty et al., 1991
MYBArabidopsisAtMYB2Abe et al., 1997
MYCArabidopsisAtMYCAbe et al., 1997
Unknown/HD-ZipArabidopsisATHB6
 ATHB7
 ATHB12Söderman et al., 1996; Lee and Chun, 1998; Söderman et al., 1999
Unknown/AP2ArabidopsisABI4Finkelstein et al., 1998; Söderman et al., 2000
  • a Member of the ABI5 homologous subfamily, but no direct evidence for a role in ABA signaling; isolated from ethylene-treated leaf abscission zones of bean.