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http://purl.uniprot.org/citations/19825649http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/19825649http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/19825649http://www.w3.org/2000/01/rdf-schema#comment"Chromatin remodeling is thought to have crucial roles in plant adaptive response to environmental stimulus. Here, we report that, in Arabidopsis, the evolutionarily conserved histone chaperone, NUCLEOSOME ASSEMBLY PROTEIN 1 (NAP1), is involved in plant response to abscisic acid (ABA), a phytohormone important in stress adaptation. We show that simultaneous loss-of-function of AtNAP1;1, AtNAP1;2, and AtNAP1;3 (the triple mutant m123-1) caused a slight hypersensitive response to ABA in seedling growth. Strikingly, the other triple mutant m123-2 containing a different mutant allele of AtNAP1;3, the Atnap1;3-2 allele, showed a hyposensitive response to ABA and a decreased tolerance to salt stress. This ABA-hyposensitive and salt response phenotype specifically associated with the Atnap1;3-2 mutant allele. We show that this mutant allele produced a truncated protein, AtNAP1;3T, which lacks 34 amino acids at the C-terminus compared to the wild-type protein AtNAP1;3. We further show that the heterozygous plants containing the Atnap1;3-2 mutant allele as well as transgenic plants overexpressing AtNAP1;3T exhibit ABA-hyposensitive phenotype. It thus indicates that AtNAP1;3T functions as a dominant negative factor in ABA response. The expression of some ABA-responsive genes, including genes encoding protein kinases and transcription regulators, was found perturbed in the mutant and in the AtNAP1;3T transgenic plants. Taken together, our study uncovered AtNAP1 proteins as positive regulators and AtNAP1;3T as a negative regulator in ABA signaling pathways, providing a novel link of chromatin remodeling to hormonal and stress responses."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.org/dc/terms/identifier"doi:10.1093/mp/ssp026"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.org/dc/terms/identifier"doi:10.1093/mp/ssp026"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Gao J."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Gao J."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Shen W.H."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Shen W.H."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Liu Z.Q."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Liu Z.Q."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Dong A.W."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/author"Dong A.W."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/date"2009"xsd:gYear
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/date"2009"xsd:gYear
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/name"Mol. Plant"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/name"Mol. Plant"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/pages"688-699"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/pages"688-699"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/title"A truncated Arabidopsis NUCLEOSOME ASSEMBLY PROTEIN 1, AtNAP1;3T, alters plant growth responses to abscisic acid and salt in the Atnap1;3-2 mutant."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/title"A truncated Arabidopsis NUCLEOSOME ASSEMBLY PROTEIN 1, AtNAP1;3T, alters plant growth responses to abscisic acid and salt in the Atnap1;3-2 mutant."xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/volume"2"xsd:string
http://purl.uniprot.org/citations/19825649http://purl.uniprot.org/core/volume"2"xsd:string
http://purl.uniprot.org/citations/19825649http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/19825649
http://purl.uniprot.org/citations/19825649http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/19825649