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maackiain/cicer arietinum
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10 risultati
Medicarpin and maackiain 3-O-glucoside-6'-O-malonate conjugates are constitutive compounds in chickpea (Cicer arietinum L.) cell cultures.
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The pterocarpan phytoalexin conjugates medicarpin 3-O-glucoside-6'-O-malonate and maackiain 3-O-glucoside-6'-O-malonate were isolated from cell suspension cultures of chickpea (Cicer arietinum L.) cultivar ILC 3279 and structurally elucidated. Both pterocarpan conjugates are constitutive metabolites
Elicitor-induced metabolic changes in cell cultures of chickpea (Cicer arietinum L.) cultivars resistant and susceptible to Ascochyta rabiei : I. Investigations of enzyme activities involved in isoflavone and pterocarpan phytoalexin biosynthesis.
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Cell-suspension cultures of Ascochyta rabiei-resistant (ILC 3279) and -susceptible (ILC 1929) chickpea (Cicer arietinum L.) cultivars were compared with regard to their elicitor-induced accumulation of pterocarpan phytoalexins and increases in the activities of biosynthetic enzymes. The growth
Accumulation of isoflavones and pterocarpan phytoalexins in cell suspension cultures of different cultivars of chickpea (Cicer arietinum).
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Cell suspension cultures of chickpea (Cicer arietinum L.) were established from cultivars ILC 3279 and ILC 1929, resistant and susceptible towards the chickpea pathogenic fungus Ascochyta rabiei. The two cell culture lines possess identical growth properties and show high accumulation of the
Three Genes for Metabolism of the Phytoalexin Maackiain in the Plant Pathogen Nectria haematococca: Meiotic Instability and Relationship to a New Gene for Pisatin Demethylase.
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Some isolates of the plant-pathogenic fungus Nectria haematococca mating population (MP) VI metabolize maackiain and medicarpin, two antimicrobial compounds (phytoalexins) synthesized by chickpea (Cicer arietinum L.). The enzymatic modifications by the fungus convert the phytoalexins to less toxic
A gene for maackiain detoxification from a dispensable chromosome of Nectria haematococca.
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In Nectria haematococca the MAK1 gene product converts a chick-pea (Cicer arietinum) phytoalexin, maackiain, into a less toxic compound. The presence of MAK1 in this fungal pathogen is also correlated with high virulence on chick-pea. Previous genetic analysis suggested that MAK1 is located on a
Elicitor-induced metabolic changes in cell cultures of chickpea (Cicer arietinum L.) cultivars resistant and susceptible to Ascochyta rabiei : II. Differential induction of chalcone-synthase-mRNA activity and analysis of in-vitro-translated protein patterns.
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Cell-suspension cultures of two chickpea (Cicer arietinum L.) cultivars, resistant (ILC 3279) and susceptible (ILC 1929) to the fungus Ascochyta rabiei (Pass.) Lab., showed differential accumulation of the phytoalexins medicarpin and maackiain, and transient induction of related enzyme activities
Genetic Analysis of the Role of Phytoalexin Detoxification in Virulence of the Fungus Nectria haematococca on Chickpea (Cicer arietinum).
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Chickpea (Cicer arietium L.) produces the antimicrobial compounds (phytoalexins) medicarpin and maackiain in response to infection by microorganisms. Nectria haematococca mating population (MP) VI, a fungus pathogenic on chickpea, can metabolize maackiain and medicarpin to less toxic products. These
Absolute configuration-dependent epoxide formation from isoflavan-4-ol stereoisomers by biphenyl dioxygenase of Pseudomonas pseudoalcaligenes strain KF707.
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Biphenyl dioxygenase from Pseudomonas pseudoalcaligenes strain KF707 expressed in Escherichia coli was found to exhibit monooxygenase activity toward four stereoisomers of isoflavan-4-ol. LC-MS and LC-NMR analyses of the metabolites revealed that the corresponding epoxides formed between C2' and C3'
LC-ESI-MS characterisation of phytoalexins induced in chickpea and pea tissues in response to a biotic elicitor of Hypnea musciformis (red algae).
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A simple extraction procedure and HPLC method was developed to analyse the major and minor components of induced phytoalexins of elicited tissues (seeds) of chickpeas (Cicer arietinum L.) and peas (Pisum sativum L.) treated with a biotic elicitor (k-carrageenan) of Hypnea musciformis (red algae)
Effects of isoflavonoids from Cicer on larvae of Heliocoverpa armigera.
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Four recently identified isoflavonoids, isolated from wild relatives of chickpea, Cicer arietinum, were shown to deter larval feeding by Heliocoverpa armigera at 100 ppm, judaicin and maackiain retained their antifeedant activity at 50 ppm and 10 ppm, respectively. The isoflavonoids were tested in
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