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Literature summary for 2.1.1.278 extracted from

  • Abbas, M.; Hernandez-Garcia, J.; Blanco-Tourinan, N.; Aliaga, N.; Minguet, E.G.; Alabadi, D.; Blazquez, M.A.
    Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis (2018), Plant Biotechnol. J., 16, 272-279 .
    View publication on PubMedView publication on EuropePMC
Search for more literature for 2.1.1.278

Application

Application Comment Organism
biotechnology potential use of reducing IAA methyltransferase activity as a method to enhance reproductive success in plants Arabidopsis thaliana

Cloned(Commentary)

Cloned (Comment) Organism
gene IAMT1 Arabidopsis thaliana

Protein Variants

Protein Variants Comment Organism
additional information construction of the T-DNA insertion mutant iamt1-1. Increasing indole-3-acetic acid (IAA) in ovaries by reducing IAA methyltransferase1 (IAMT1) activity in Arabidopsis thaliana, phenotype, overview. Loss of IAMT1 activity is also associated with the production of more nodes after flowering and higher tolerance of the shoot apical meristem to higher temperatures. As a consequence, the productivity of the iamt1 mutant under higher temperatures is more than double of that of the wild-type, with almost no apparent trade-off Arabidopsis thaliana

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
S-adenosyl-L-methionine + indole-3-acetate Arabidopsis thaliana
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 methyl indole-3-acetate + S-adenosyl-L-homocysteine
-
 ?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana Q9FLN8
-
-

Source Tissue

Source Tissue Comment Organism Textmining
carpel
-
 Arabidopsis thaliana
-
carpel gene IAMT1 is expressed during pistil development Arabidopsis thaliana
-
flower expression profile of IAMT1 in flower tissues, overview Arabidopsis thaliana
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additional information the IAMT1 gene is widely expressed in all Arabidopsis thaliana organs Arabidopsis thaliana
-
petal
-
 Arabidopsis thaliana
-
plant ovary
-
 Arabidopsis thaliana
-
sepal
-
 Arabidopsis thaliana
-
stamen
-
 Arabidopsis thaliana
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methionine + indole-3-acetate
-
 Arabidopsis thaliana methyl indole-3-acetate + S-adenosyl-L-homocysteine
-
 ?

Synonyms

Synonyms Comment Organism
IAA methyltransferase1
-
 Arabidopsis thaliana
IAMT1
-
 Arabidopsis thaliana
indole-3-acetic acid methyltransferase
-
 Arabidopsis thaliana

Cofactor

Cofactor Comment Organism Structure
S-adenosyl-L-methionine
-
 Arabidopsis thaliana

General Information

General Information Comment Organism
malfunction overexpression of IAMT1 causes a decrease in auxin signalling. Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis thaliana. Attenuation of IAMT1 activity promotes fertilization and enhances thermotolerance. The iamt1 mutant shows increased auxin signalling in funiculi, which correlated with a higher growth rate of wild-type pollen in contact with mutant ovaries and premature ovule fertilization. While the production of seeds per fruit is similar in the wild-type and the mutant at 20°C, exposure to 29°C causes a more severe decrease in fertility in the wild-type than in the mutant. Loss of IAMT1 activity is also associated with the production of more nodes after flowering and higher tolerance of the shoot apical meristem to higher temperatures. As a consequence, the productivity of the iamt1 mutant under higher temperatures is more than double of that of the wild-type, with almost no apparent trade-off Arabidopsis thaliana
physiological function plant hormone auxin induces temperature tolerance to pollen. Methylation of indole-3-acetic acid (IAA) by indole-3-acetic acid methyltransferase has been shown to participate in auxin homeostasis. Methyl-IAA (Me-IAA) is an inactive form of IAA Arabidopsis thaliana