Differential induction of apoplastic peroxidase and chitinase activities in susceptible and resistant wheat cultivars by Russian wheat aphid infestation

The intercellular peroxidase and chitinase activities of three wheat cultivars [Triticum aestivum L. cvs 'Tugela DN', 'Molopo DN' (Gariep) and 'Betta DN'] containing the Dn-1 gene for resistance to the Russian wheat aphid (RWA) Diuraphis noxia (Mordvilko) and the corres...

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Vydáno v:Plant cell reports Ročník 18; číslo 1/2; s. 132 - 137
Hlavní autoři: Van Der Westhuizen, A.J, Qian, X.M, Botha, A.M
Médium: Journal Article
Jazyk:angličtina
Vydáno: Berlin Springer 01.11.1998
Springer Nature B.V
Témata:
Agronomy. Soil science and plant productions
Aphididae
Aphidoidea
Betta
Biological and medical sciences
biological resistance
Chitinase
Cultivars
defense mechanisms
Diuraphis noxia
dn-1 genes
Enzymatic activity
enzyme activity
Fundamental and applied biological sciences. Psychology
Genes
genetic background
genetic regulation
genetic resistance
genetic variation
Genetics
Genetics and breeding of economic plants
Infestation
insect pests
insect resistance
Insects
Peroxidase
Pest animals
Pest resistance
protein content
protein synthesis
Proteins
quantitative analysis
resistance
resistance genes
Selective breeding
Triticum aestivum
Varietal selection. Specialized plant breeding, plant breeding aims
Wheat
Chitinase
Monocotyledones
Insecta
Cereal crop
Homoptera
Enzymatic activity
Gramineae
Insect resistance
Angiospermae
Aphididae
Peroxidase
Aphidoidea
Enzyme
Induction
Diuraphis noxia
Apoplast
Peroxidases
Arthropoda
Glycosidases
Hydrolases
Defense mechanism
Spermatophyta
Oxidoreductases
Invertebrata
O-Glycosidases
Comparative study
Triticum aestivum
Cultivar
ISSN:0721-7714, 1432-203X
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Shrnutí:The intercellular peroxidase and chitinase activities of three wheat cultivars [Triticum aestivum L. cvs 'Tugela DN', 'Molopo DN' (Gariep) and 'Betta DN'] containing the Dn-1 gene for resistance to the Russian wheat aphid (RWA) Diuraphis noxia (Mordvilko) and the corresponding near-isogenic susceptible cultivars ('Tugela', 'Molopo' and 'Betta') were studied under conditions of infestation and non-infestation. The aim was to gain information on the mechanism of resistance. The resistance response was induced by RWA infestation. Infestation rapidly induced the activities of both enzymes selectively in resistant wheat to levels of magnitudes higher than those in susceptible wheat. The genetic background in which the Dn-1 resistance gene is bred played a role and the level of activity corresponded to the level of resistance. Immunologic studies confirmed that the induction of enzyme activities was due to the induction of higher protein levels. These results indicate that peroxidase and chitinase may have a role in insect resistance.
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ISSN:0721-7714
1432-203X
DOI:10.1007/s002990050545