Skip to main content

Table 1 Mutant alleles used in the study with the description of corresponding genes and mutant phenotypes

From: Brassinosteroid-mediated stress tolerance in Arabidopsis shows interactions with abscisic acid, ethylene and salicylic acid pathways

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

[73, 74]

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

[43, 75, 76]

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]