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Title of Journal: J Chem Ecol

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Abbravation: Journal of Chemical Ecology

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Springer-Verlag

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DOI

10.1007/bf02118842

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1573-1561

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Mechanism of Selective Phytotoxicity of Emphasis

Authors: Mayumi Hachinohe Hiroshi Matsumoto
Publish Date: 2007/09/26
Volume: 33, Issue: 10, Pages: 1919-1926
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Abstract

l34Dihydroxyphenylalanine ldopa is one of the few allelochemicals in which the phytotoxic action mechanism has been studied Excess exogenous ldopa suppresses root elongation in some plant species and the inhibitory action is speciesselective The main factor of phytotoxicity of ldopa is considered to be oxidative damage by reactive oxygen species ROS and/or free radical species FRS This study was performed to elucidate the mechanism of speciesselective phytotoxicity The involvement of ROS/FRS and polyphenol oxidase PPO in speciesselective phytotoxicity was examined with barnyardgrass Echinochloa crusgalli L and lettuce Lactuca sativa L tolerant and susceptible species respectively Lipid peroxidation and melanin accumulation correlated with growth inhibition by Ldopa Antioxidants ascorbic acid and αtocopherol decreased lipid peroxidation and melanin accumulation and rescued lettuce root from growth inhibition The oxidation of Ldopa by PPO was much greater in lettuce than in barnyardgrass From these results the phytotoxicity of Ldopa is considered due to the oxidative damage caused by ROS/FRS generated from the melanin synthesis pathway PPO activity might be involved in the mechanism of speciesselective phytotoxicity between barnyardgrass and lettuce


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  1. Electrophysiological and Behavioral Responses of a Cuban Population of the Sweet Potato Weevil to its Sex Pheromone
  2. Plant Secondary Metabolites as Rodent Repellents: a Systematic Review
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  4. High Conservatism in the Composition of Scent Gland Secretions in Cyphophthalmid Harvestmen: Evidence from Pettalidae
  5. Secondary Metabolites Released by The Burying Beetle Nicrophorus vespilloides : Chemical Analyses and Possible Ecological Functions
  6. Role of (3 Z ,6 Z ,8 E )-Dodecatrien-1-ol in Trail Following, Feeding, and Mating Behavior of Reticulitermes hesperus
  7. Queen Sex Pheromone of the Slave-making Ant, Polyergus breviceps
  8. Identification, Synthesis, and Field Evaluation of the Sex Pheromone from the Citrus Leafminer, Phyllocnistis citrella
  9. A Pharm-Ecological Perspective of Terrestrial and Aquatic Plant-Herbivore Interactions
  10. Production of Induced Volatiles by Datura wrightii in Response to Damage by Insects: Effect of Herbivore Species and Time
  11. Jasmonic Acid and Ethylene Signaling Pathways Regulate Glucosinolate Levels in Plants During Rhizobacteria-Induced Systemic Resistance Against a Leaf-Chewing Herbivore
  12. Genetic and Environmental Sources of Variation in the Autogenous Chemical Defense of a Leaf Beetle
  13. Same Host-Plant, Different Sterols: Variation in Sterol Metabolism in an Insect Herbivore Community
  14. Effects of Ingested Secondary Metabolites on the Immune Response of a Polyphagous Caterpillar Grammia incorrupta
  15. Effects of Ingested Secondary Metabolites on the Immune Response of a Polyphagous Caterpillar Grammia incorrupta
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  17. Altered Olfactory Receptor Neuron Responsiveness Is Correlated with a Shift in Behavioral Response in an Evolved Colony of the Cabbage Looper Moth, Trichoplusia ni
  18. Interactions Between a Belowground Herbivore and Primary and Secondary Root Metabolites in Wild Cabbage
  19. Different Responses of an Invasive Clonal Plant Wedelia trilobata and its Native Congener to Gibberellin: Implications for Biological Invasion
  20. Selective Behaviour of Honeybees in Acquiring European Propolis Plant Precursors
  21. Pulsed Odors from Maize or Spinach Elicit Orientation in European Corn Borer Neonate Larvae
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  23. Plant Surface Properties in Chemical Ecology
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  25. Plant Volatiles Enhance Behavioral Responses of Grapevine Moth Males, Lobesia botrana to Sex Pheromone
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  29. Electrophysiologically-Active Maize Volatiles Attract Gravid Female European Corn Borer, Ostrinia nubilalis
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  39. Determination of the Relative and Absolute Configurations of the Female-produced Sex Pheromone of the Cerambycid Beetle Prionus californicus

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