Category | Locus (AGI) | Gene | Description | Mutant allele used | References |
---|---|---|---|---|---|
SA synthesis Defective | AT4G39030 | EDS5 | member of the MATE-transporter family; mutants do not accumulate SA after pathogen inoculation and are hypersusceptible to pathogen infection. | eds5-1 | |
SA-insensitive | AT1G64280 | NPR1 | similar to the transcription factor inhibitor I kappa B, and contains ankyrin repeats; key regulator of SA-mediated systemic acquired resistance (SAR) pathway; mutants are SA-insensitive and hypersusceptible to pathogen infection. | npr1-1 | |
High SA levels | AT5G64930 | CPR5 | regulator of expression of pathogenesis-related (PR) genes; participates in signal transduction pathways involved in plant defense; mutants exhibit increased SA levels and constitutive expression of PR genes. | cpr5-2 | [63] |
ET-insensitive | AT5G03280 | EIN2 | NRAMP metal transporter family; involved in ET signal transduction; mutants are ET-insensitive. | ein2 | [77] |
High ET levels | AT3G51770 | ETO1 | encodes a negative regulator of 1-aminocyclopropane-1-carboxylic acid synthase5(ACS5), which catalyzes the rate-limiting step in ET biosynthesis; mutations elevate ET biosynthesis by affecting the posttranscriptional regulation of ACS. | eto1-1 | [77] |
JA-deficient | AT5G42650 | AOS | encodes a member of the cytochrome p450 CYP74 gene family that functions as an allene oxide synthase; catalyzes dehydration of the hydroperoxide to an unstable allene oxide in the JA biosynthetic pathway; mutants are JA-deficient. | aos | [78] |
JA-insensitive | AT2G46370 | JAR1 | encodes cytoplasmic localized phytochrome A signaling component protein similar to the GH3 family of proteins; loss of function mutants are defective in a variety of responses to JA. | jar1-1 | [79] |
ABA-deficient | AT5G67030 | ABA1 | encodes zeaxanthin epoxidase gene that functions in first step of ABA biosynthesis; mutants are ABA-deficient. | aba1-1 | [80] |
ABA-insensitive | AT4G26080 | ABI1 | Protein phosphatase 2C; involved in ABA signal transduction; mutants are ABA-insensitive. | abi1-1 | [81] |