ArticlePlant physiology2010
The lesion-mimic mutant cpr22 shows alterations in abscisic acid signaling and abscisic acid insensitivity in a salicylic acid-dependent manner.
Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.
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Who cites it
53 citing papers in PubMed, 119 citations in OpenAlex.
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- Function and Mechanism of Jasmonic Acid in Plant Responses to Abiotic and Biotic Stresses.International journal of molecular sciences · 2021Review
- OsLMP1, Encoding a Deubiquitinase, Regulates the Immune Response in Rice.Frontiers in plant science · 2021Article
- Hormones as go-betweens in plant microbiome assembly.The Plant journal : for cell and molecular biology · 2021Review
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- Identification of salicylic acid-independent responses in an Arabidopsis phosphatidylinositol 4-kinase beta double mutant.Annals of botany · 2020Article
- Chemical genetic identification of a lectin receptor kinase that transduces immune responses and interferes with abscisic acid signaling.The Plant journal : for cell and molecular biology · 2019Article
- Proteomics Analysis to Identify Proteins and Pathways Associated with the Novel Lesion Mimic Mutant E40 in Rice Using iTRAQ-Based Strategy.International journal of molecular sciences · 2019Article
- Identification of a Novel Semi-Dominant Spotted-Leaf Mutant with Enhanced Resistance toInternational journal of molecular sciences · 2018Article
- Arabidopsis ETHYLENE RESPONSE FACTOR 8 (ERF8) has dual functions in ABA signaling and immunity.BMC plant biology · 2018Article
- The role of water in plant-microbe interactions.The Plant journal : for cell and molecular biology · 2018Review
- Phytochrome and Phytohormones: Working in Tandem for Plant Growth and Development.Frontiers in plant science · 2018Review
- Identification of aFrontiers in plant science · 2018Article
- Genome-Wide Identification of Cyclic Nucleotide-Gated Ion Channel Gene Family in Wheat and Functional Analyses ofFrontiers in plant science · 2018Article
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Authors and funding
10 authors at 5 institutions in 4 countries.
Funding
Abstract
A number of Arabidopsis (Arabidopsis thaliana) lesion-mimic mutants exhibit alterations in both abiotic stress responses and pathogen resistance. One of these mutants, constitutive expresser of PR genes22 (cpr22), which has a mutation in two cyclic nucleotide-gated ion channels, is a typical lesion-mimic mutant exhibiting elevated levels of salicylic acid (SA), spontaneous cell death, constitutive expression of defense-related genes, and enhanced resistance to various pathogens; the majority of its phenotypes are SA dependent. These defense responses in cpr22 are suppressed under high-humidity conditions and enhanced by low humidity. After shifting plants from high to low humidity, the cpr22 mutant, but not the wild type, showed a rapid increase in SA levels followed by an increase in abscisic acid (ABA) levels. Concomitantly, genes for ABA metabolism were up-regulated in the mutant. The expression of a subset of ABA-inducible genes, such as RD29A and KIN1/2, was down-regulated, but that of other genes, like ABI1 and HAB1, was up-regulated in cpr22 after the humidity shift. cpr22 showed reduced responsiveness to ABA not only in abiotic stress responses but also in germination and stomatal closure. Double mutant analysis with nahG plants that degrade SA indicated that these alterations in ABA signaling were attributable to elevated SA levels. Furthermore, cpr22 displayed suppressed drought responses by long-term drought stress. Taken together, these results suggest an effect of SA on ABA signaling/abiotic stress responses during the activation of defense responses in cpr22.
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