Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g17550	Key component and repressor of the abscisic acid (ABA) signaling pathway that regulates numerous ABA responses, such as stomatal closure, seed germination and inhibition of vegetative growth.	No verified direct reference in this release
Arabidopsis	At1g72770	Key component and repressor of the abscisic acid (ABA) signaling pathway that regulates numerous ABA responses, such as stomatal closure, seed germination and inhibition of vegetative growth.	Gain-of-function and loss-of-function phenotypes of the protein phosphatase 2C HAB1 reveal its role as a negative regulator of abscisic acid signalling.; 2004; DOI: 10.1046/j.1365-313x.2003.01966.x; PMID: 14731256; https://pubmed.ncbi.nlm.nih.gov/14731256/ | Enhancement of abscisic acid sensitivity and reduction of water consumption in Arabidopsis by combined inactivation of the protein phosphatases type 2C ABI1 and HAB1.; 2006; DOI: 10.1104/pp.106.081018; PMID: 16798945; https://pubmed.ncbi.nlm.nih.gov/16798945/ | A hypermorphic mutation in the protein phosphatase 2C HAB1 strongly affects ABA signaling in Arabidopsis.; 2006; DOI: 10.1016/j.febslet.2006.07.047; PMID: 16876791; https://pubmed.ncbi.nlm.nih.gov/16876791/
Arabidopsis	At5g57050	Repressor of the abscisic acid (ABA) signaling pathway that regulates numerous ABA responses, such as stomatal closure, osmotic water permeability of the plasma membrane (Pos), high light stress, response to glucose, seed germination and inhibition of vegetative growth.	Arabidopsis abi1-1 and abi2-1 phosphatase mutations reduce abscisic acid-induced cytoplasmic calcium rises in guard cells.; 1999; DOI: 10.1105/tpc.11.9.1785; PMID: 10488243; https://pubmed.ncbi.nlm.nih.gov/10488243/ | The genes ABI1 and ABI2 are involved in abscisic acid- and drought-inducible expression of the Daucus carota L. Dc3 promoter in guard cells of transgenic Arabidopsis thaliana (L.) Heynh.; 2000; DOI: 10.1007/s004250050692; PMID: 10872217; https://pubmed.ncbi.nlm.nih.gov/10872217/ | Analysis of Arabidopsis glucose insensitive mutants, gin5 and gin6, reveals a central role of the plant hormone ABA in the regulation of plant vegetative development by sugar.; 2000; PMID: 10950871; https://pubmed.ncbi.nlm.nih.gov/10950871/ | The ABI1 and ABI2 protein phosphatases 2C act in a negative feedback regulatory loop of the abscisic acid signalling pathway.; 2001; DOI: 10.1046/j.1365-313x.2001.00965.x; PMID: 11208021; https://pubmed.ncbi.nlm.nih.gov/11208021/ | Abscisic acid activation of plasma membrane Ca(2+) channels in guard cells requires cytosolic NAD(P)H and is differentially disrupted upstream and downstream of reactive oxygen species production in abi1-1 and abi2-1 protein phosphatase 2C mutants.; 2001; DOI: 10.1105/tpc.010210; PMID: 11701885; https://pubmed.ncbi.nlm.nih.gov/11701885/ | The role of ABA and the transpiration stream in the regulation of the osmotic water permeability of leaf cells.; 2001; DOI: 10.1073/pnas.231471998; PMID: 11707572; https://pubmed.ncbi.nlm.nih.gov/11707572/ | Hypersensitivity of abscisic acid-induced cytosolic calcium increases in the Arabidopsis farnesyltransferase mutant era1-2.; 2002; DOI: 10.1105/tpc.010448; PMID: 12119381; https://pubmed.ncbi.nlm.nih.gov/12119381/ | A calcium sensor and its interacting protein kinase are global regulators of abscisic acid signaling in Arabidopsis.; 2002; DOI: 10.1016/s1534-5807(02)00229-0; PMID: 12194854; https://pubmed.ncbi.nlm.nih.gov/12194854/ | Maternal Effects Govern Variable Dominance of Two Abscisic Acid Response Mutations in Arabidopsis thaliana.; 1994; DOI: 10.1104/pp.105.4.1203; PMID: 12232276; https://pubmed.ncbi.nlm.nih.gov/12232276/ | Hydrotropism in abscisic acid, wavy, and gravitropic mutants of Arabidopsis thaliana.; 2002; DOI: 10.1007/s00425-002-0840-3; PMID: 12447533; https://pubmed.ncbi.nlm.nih.gov/12447533/ | Control of Ascorbate Peroxidase 2 expression by hydrogen peroxide and leaf water status during excess light stress reveals a functional organisation of Arabidopsis leaves.; 2003; DOI: 10.1046/j.1365-313x.2003.01656.x; PMID: 12609042; https://pubmed.ncbi.nlm.nih.gov/12609042/ | Synthesis of the Arabidopsis bifunctional lysine-ketoglutarate reductase/saccharopine dehydrogenase enzyme of lysine catabolism is concertedly regulated by metabolic and stress-associated signals.; 2003; DOI: 10.1104/pp.103.026294; PMID: 14576281; https://pubmed.ncbi.nlm.nih.gov/14576281/ | Regulation of the ABA-sensitive Arabidopsis potassium channel gene GORK in response to water stress.; 2003; DOI: 10.1016/s0014-5793(03)01118-9; PMID: 14596925; https://pubmed.ncbi.nlm.nih.gov/14596925/ | The ABI2-dependent abscisic acid signalling controls HrpN-induced drought tolerance in Arabidopsis.; 2005; DOI: 10.1007/s00425-004-1444-x; PMID: 15599761; https://pubmed.ncbi.nlm.nih.gov/15599761/ | Heat stress phenotypes of Arabidopsis mutants implicate multiple signaling pathways in the acquisition of thermotolerance.; 2005; DOI: 10.1104/pp.105.062257; PMID: 15923322; https://pubmed.ncbi.nlm.nih.gov/15923322/ | Role of abscisic acid (ABA) and Arabidopsis thaliana ABA-insensitive loci in low water potential-induced ABA and proline accumulation.; 2006; DOI: 10.1093/jxb/erj026; PMID: 16339784; https://pubmed.ncbi.nlm.nih.gov/16339784/ | Fibrillin expression is regulated by abscisic acid response regulators and is involved in abscisic acid-mediated photoprotection.; 2006; DOI: 10.1073/pnas.0501720103; PMID: 16571665; https://pubmed.ncbi.nlm.nih.gov/16571665/ | Interaction between sugar and abscisic acid signalling during early seedling development in Arabidopsis.; 2008; DOI: 10.1007/s11103-008-9308-6; PMID: 18278579; https://pubmed.ncbi.nlm.nih.gov/18278579/ | A plasma membrane receptor kinase, GHR1, mediates abscisic acid- and hydrogen peroxide-regulated stomatal movement in Arabidopsis.; 2012; DOI: 10.1105/tpc.112.100107; PMID: 22730405; https://pubmed.ncbi.nlm.nih.gov/22730405/ | Abscisic acid induces the alcohol dehydrogenase gene in Arabidopsis.; 1996; DOI: 10.1104/pp.111.2.381; PMID: 8787023; https://pubmed.ncbi.nlm.nih.gov/8787023/ | Differential abscisic acid regulation of guard cell slow anion channels in Arabidopsis wild-type and abi1 and abi2 mutants.; 1997; DOI: 10.1105/tpc.9.3.409; PMID: 9090884; https://pubmed.ncbi.nlm.nih.gov/9090884/ | Abscisic acid-independent and abscisic acid-dependent regulation of proline biosynthesis following cold and osmotic stresses in Arabidopsis thaliana.; 1997; DOI: 10.1007/s004380050397; PMID: 9108297; https://pubmed.ncbi.nlm.nih.gov/9108297/ | The Arabidopsis ABSCISIC ACID-INSENSITIVE2 (ABI2) and ABI1 genes encode homologous protein phosphatases 2C involved in abscisic acid signal transduction.; 1997; DOI: 10.1105/tpc.9.5.759; PMID: 9165752; https://pubmed.ncbi.nlm.nih.gov/9165752/ | Convergence of the abscisic acid, CO2, and extracellular calcium signal transduction pathways in stomatal guard cells.; 1997; DOI: 10.1104/pp.114.4.1557; PMID: 9276963; https://pubmed.ncbi.nlm.nih.gov/9276963/
Rice	Os01g0583100	Probable protein phosphatase that may function in abscisic acid (ABA) signaling.	No verified direct reference in this release
Rice	Os05g0592800	Protein phosphatase that acts as a negative regulator of abscisic acid (ABA) signaling.	ABA Regulates Subcellular Redistribution of OsABI-LIKE2, a Negative Regulator in ABA Signaling, to Control Root Architecture and Drought Resistance in Oryza sativa.; 2015; DOI: 10.1093/pcp/pcv154; PMID: 26491145; https://pubmed.ncbi.nlm.nih.gov/26491145/