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Titolo:
Changes in wheat root enzymes correlated with resistance to cereal cyst nematodes
Autore:
Andres, MF; Melillo, MT; Delibes, A; Romero, MD; Bleve-Zacheo, T;
Indirizzi:
CSIC, Ctr Ciencias Medioambientales, E-28006 Madrid, Spain CSIC Madrid Spain E-28006 encias Medioambientales, E-28006 Madrid, Spain CNR, Ist Nematol Agr, I-70126 Bari, Italy CNR Bari Italy I-70126CNR, Ist Nematol Agr, I-70126 Bari, Italy UPM, Dept Biotecnol, ETS Ingenieros Agronomos, E-28040 Madrid, Spain UPM Madrid Spain E-28040 ETS Ingenieros Agronomos, E-28040 Madrid, Spain
Titolo Testata:
NEW PHYTOLOGIST
fascicolo: 2, volume: 152, anno: 2001,
pagine: 343 - 354
SICI:
0028-646X(200111)152:2<343:CIWREC>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETERODERA-AVENAE WOLL; MELOIDOGYNE-INCOGNITA; AEGILOPS-VENTRICOSA; HEXAPLOID WHEAT; GENETIC-CONTROL; INFECTION; RESPONSES; TOMATO; IDENTIFICATION; PEROXIDASES;
Keywords:
wheat (Triticum aestivum); Heterodera avenae; syncytium; resistance gene; enzymes; peroxidase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Andres, MF CSIC, Ctr Ciencias Medioambientales, Serrano115 Dpdo, E-28006 Madrid, Spain CSIC Serrano115 Dpdo Madrid Spain E-28006 -28006 Madrid, Spain
Citazione:
M.F. Andres et al., "Changes in wheat root enzymes correlated with resistance to cereal cyst nematodes", NEW PHYTOL, 152(2), 2001, pp. 343-354

Abstract

. The response of the resistant wheat/Aegilops ventricosa introgression line, H-93-8, to a Spanish population of the cereal cyst nematode, Heteroderaavenae, was studied in order to determine changes in gene expression correlated with resistance.. Roots of susceptible (Triticum aestivum cv. Anza) and resistant wheat seedlings were analysed using histological (electron microscopy), cytochemical (at tissue and cytological level) and biochemical (isoelectrofocusing) techniques.. Infection of resistant wheat lines with H. avenae resulted in a hypersensitive reaction, with syncytial cells deteriorating in a few days. Following nematode infection, peroxidase, esterase and superoxide dismutase activities were increased in H-93-8 roots compared with the susceptible wheat. Syncytial cells in roots of resistant lines were highly reactive to diaminobenzidine and homovanillic acid oxidase, the latter associated with plasma andnuclear membranes and vacuoles. The same syncytial cells showed early positive reaction to phloroglucinol, indicating lignification.. The Cre2 resistance gene in H-93-8 inhibited reproduction of H. avenae. Peroxidases, esterases and superoxide dismutase might represent products ofgenes whose expression is correlated with the resistance response to this nematode.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 18:31:56