The Inhibition of Brassinosteroid-Induced Ethylene Biosynthesis in Etiolated Mung Bean Hypocotyl Segments by 2,3,5-Triiodobenzoic Acid and 2-(p-Chlorophenoxy)-2-methylpropionic Acid

Richard N. Arteca, De Sheng Tsai, N. Bushan Mandava

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The effect of two auxin antagonists, 2,3,5-triiodobenzoic acid (TIBA) and 2-(p-chlorophenoxy)-2-methyl propionic acid (CMPA) on brassinosteroid (BR)-induced ethylene biosynthesis in etiolated mung bean hypocotyl (Vigna radiata L. Rwilcz cv. Berken) segments was studied. The maximum inhibition of both ethylene and 1-aminocyclopropane-1-carboxylic acid (ACC) biosynthesis by TIBA and CMPA was achieved at concentrations of 50 μM and 10 μM, respectively. With increasing concentrations of BR, there were significant increases in both ethylene and ACC production. When varying concentrations of BR were used in combination with 50 μM TIBA or 10 μM CMPA, there was a decrease in ethylene and ACC production at all BR concentrations tested, with the exception of the lowest. After 18 h, mung bean hypocotyl segments pre-incubated for 8 h with either 50 μM TIBA or 10 μM CMPA showed a maximum inhibition of BR-induced ethylene and ACC production. The results of treatment sequences showed that both TIBA and CMP A caused the same inhibitory effect whether applied before or after BR-treatment.

Original languageEnglish (US)
Pages (from-to)52-56
Number of pages5
JournalJournal of Plant Physiology
Volume139
Issue number1
DOIs
StatePublished - Jan 1 1991

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2,3,5-triiodobenzoic acid
Brassinosteroids
Isobutyrates
Hypocotyl
brassinosteroids
Triiodobenzoic Acids
mung beans
ethylene production
hypocotyls
1-aminocyclopropane-1-carboxylic acid
propionic acid
ethylene
acids
Cytidine Monophosphate
Indoleacetic Acids
Vigna radiata
Vigna
antagonists
auxins

All Science Journal Classification (ASJC) codes

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

Cite this

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title = "The Inhibition of Brassinosteroid-Induced Ethylene Biosynthesis in Etiolated Mung Bean Hypocotyl Segments by 2,3,5-Triiodobenzoic Acid and 2-(p-Chlorophenoxy)-2-methylpropionic Acid",
abstract = "The effect of two auxin antagonists, 2,3,5-triiodobenzoic acid (TIBA) and 2-(p-chlorophenoxy)-2-methyl propionic acid (CMPA) on brassinosteroid (BR)-induced ethylene biosynthesis in etiolated mung bean hypocotyl (Vigna radiata L. Rwilcz cv. Berken) segments was studied. The maximum inhibition of both ethylene and 1-aminocyclopropane-1-carboxylic acid (ACC) biosynthesis by TIBA and CMPA was achieved at concentrations of 50 μM and 10 μM, respectively. With increasing concentrations of BR, there were significant increases in both ethylene and ACC production. When varying concentrations of BR were used in combination with 50 μM TIBA or 10 μM CMPA, there was a decrease in ethylene and ACC production at all BR concentrations tested, with the exception of the lowest. After 18 h, mung bean hypocotyl segments pre-incubated for 8 h with either 50 μM TIBA or 10 μM CMPA showed a maximum inhibition of BR-induced ethylene and ACC production. The results of treatment sequences showed that both TIBA and CMP A caused the same inhibitory effect whether applied before or after BR-treatment.",
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The Inhibition of Brassinosteroid-Induced Ethylene Biosynthesis in Etiolated Mung Bean Hypocotyl Segments by 2,3,5-Triiodobenzoic Acid and 2-(p-Chlorophenoxy)-2-methylpropionic Acid. / Arteca, Richard N.; Tsai, De Sheng; Bushan Mandava, N.

In: Journal of Plant Physiology, Vol. 139, No. 1, 01.01.1991, p. 52-56.

Research output: Contribution to journalArticle

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T1 - The Inhibition of Brassinosteroid-Induced Ethylene Biosynthesis in Etiolated Mung Bean Hypocotyl Segments by 2,3,5-Triiodobenzoic Acid and 2-(p-Chlorophenoxy)-2-methylpropionic Acid

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