Citral dehydrogenase involved in geraniol oxidation pathway

purification, characterization and kinetic studies from Persicaria minor (Polygonum minus Huds.)

Nik Rashida Nik-Abdul-Ghani, Zeti Azura Mohamed Hussein, Maizom Hassan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Plants emit semiochemicals as alarm signals upon attack by herbivores or insect pests. Complex insect-plant interaction through alarm pheromones can be manipulated to improve crop protection. Geraniol, citral and geranic acid are monoterpenoid compounds from plants and they play a role as semiochemical alarm pheromones. In plants, the oxidation of geraniol into geranic acid is catalyzed by two oxidoreductases, geraniol dehydrogenase and citral dehydrogenase. In this study, citral dehydrogenase isoenzymes from Persicaria minor (Polygonum minus) leaves were purified to homogeneity and characterized. Enzyme purification through Toyopearl GigaCap Q-650 M column chromatography at pH 7.5 produced two activity peaks, suggesting the existence of two citral dehydrogenase isoenzymes. Both isoenzymes were different in isoelectric point and kinetic parameters but similar in pH and optimal temperature as well as in substrate specificity. Findings from this study will provide a basic understanding for the development of recombinant production of these particular enzymes. Further studies on molecular structure involved could be exploited in transgenic plant as an integrated pest management strategy.

Original languageEnglish
JournalJournal of Plant Biochemistry and Biotechnology
Volume27
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Polygonum
citral
geraniol
Pheromones
oxidation
Isoenzymes
alarm pheromones
kinetics
isozymes
semiochemicals
Insects
Oxidoreductases
plant-insect relations
Pest Control
Monoterpenes
Herbivory
Genetically Modified Plants
acids
oxidoreductases
Isoelectric Point

Keywords

  • Alarm pheromone
  • Citral dehydrogenase
  • Geranic acid
  • Isoenzymes
  • Persicaria minor (Polygonum minus Huds.)

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Plant Science

Cite this

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title = "Citral dehydrogenase involved in geraniol oxidation pathway: purification, characterization and kinetic studies from Persicaria minor (Polygonum minus Huds.)",
abstract = "Plants emit semiochemicals as alarm signals upon attack by herbivores or insect pests. Complex insect-plant interaction through alarm pheromones can be manipulated to improve crop protection. Geraniol, citral and geranic acid are monoterpenoid compounds from plants and they play a role as semiochemical alarm pheromones. In plants, the oxidation of geraniol into geranic acid is catalyzed by two oxidoreductases, geraniol dehydrogenase and citral dehydrogenase. In this study, citral dehydrogenase isoenzymes from Persicaria minor (Polygonum minus) leaves were purified to homogeneity and characterized. Enzyme purification through Toyopearl GigaCap Q-650 M column chromatography at pH 7.5 produced two activity peaks, suggesting the existence of two citral dehydrogenase isoenzymes. Both isoenzymes were different in isoelectric point and kinetic parameters but similar in pH and optimal temperature as well as in substrate specificity. Findings from this study will provide a basic understanding for the development of recombinant production of these particular enzymes. Further studies on molecular structure involved could be exploited in transgenic plant as an integrated pest management strategy.",
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AU - Mohamed Hussein, Zeti Azura

AU - Hassan, Maizom

PY - 2018/1/1

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N2 - Plants emit semiochemicals as alarm signals upon attack by herbivores or insect pests. Complex insect-plant interaction through alarm pheromones can be manipulated to improve crop protection. Geraniol, citral and geranic acid are monoterpenoid compounds from plants and they play a role as semiochemical alarm pheromones. In plants, the oxidation of geraniol into geranic acid is catalyzed by two oxidoreductases, geraniol dehydrogenase and citral dehydrogenase. In this study, citral dehydrogenase isoenzymes from Persicaria minor (Polygonum minus) leaves were purified to homogeneity and characterized. Enzyme purification through Toyopearl GigaCap Q-650 M column chromatography at pH 7.5 produced two activity peaks, suggesting the existence of two citral dehydrogenase isoenzymes. Both isoenzymes were different in isoelectric point and kinetic parameters but similar in pH and optimal temperature as well as in substrate specificity. Findings from this study will provide a basic understanding for the development of recombinant production of these particular enzymes. Further studies on molecular structure involved could be exploited in transgenic plant as an integrated pest management strategy.

AB - Plants emit semiochemicals as alarm signals upon attack by herbivores or insect pests. Complex insect-plant interaction through alarm pheromones can be manipulated to improve crop protection. Geraniol, citral and geranic acid are monoterpenoid compounds from plants and they play a role as semiochemical alarm pheromones. In plants, the oxidation of geraniol into geranic acid is catalyzed by two oxidoreductases, geraniol dehydrogenase and citral dehydrogenase. In this study, citral dehydrogenase isoenzymes from Persicaria minor (Polygonum minus) leaves were purified to homogeneity and characterized. Enzyme purification through Toyopearl GigaCap Q-650 M column chromatography at pH 7.5 produced two activity peaks, suggesting the existence of two citral dehydrogenase isoenzymes. Both isoenzymes were different in isoelectric point and kinetic parameters but similar in pH and optimal temperature as well as in substrate specificity. Findings from this study will provide a basic understanding for the development of recombinant production of these particular enzymes. Further studies on molecular structure involved could be exploited in transgenic plant as an integrated pest management strategy.

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