Identification of two haemolysins in larvicidal activity of Bacillus thuringiensis against the bean bug, Riptortus clavatus

KUBOTA, Y ; OHGUSHI, A ; et al.

In: Journal of applied entomology (1986), Jg. 130 (2006), Heft 3, S. 183-189

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This study characterized larvicidal activity against the bean bug, Riptortus clavatus (Hem., Alydidae), associated with a strain of Bacillus thuringiensis serovar morrisoni (H8ab). Purified crystals and solubilized crystal proteins exhibited only low-level activities, while the supernatant of broth culture contained rapid and strong larvicidal activity. Heating at 100°C for 10 min destroyed the activity. Two extracellular vegetative proteins, with molecular masses of 40 and 45 kDa, were obtained by diethylaminoethyl (DEAE)-cellulose column chromatography from the bacterial culture fluid. Both proteins were related to the known haemolysins of Bacillus cereus, showing strong cytolytic activity against sheep erythrocytes. The bean bug-killing activity was not associated with individual proteins; however, strong activity was induced when two proteins were combined. The combined proteins were toxic to larvae in the early stage of first instar but not against larvae of later instars and adults. Larvae of the diamondbackmoth, Plutella xylostella, were not killed by these proteins.

Titel:	Identification of two haemolysins in larvicidal activity of Bacillus thuringiensis against the bean bug, Riptortus clavatus
Autor/in / Beteiligte Person:	KUBOTA, Y ; OHGUSHI, A ; UEMORI, A ; MIZUKI, E ; OHBA, M
Link:	Full Text Finder (Volltext) View record from PASCAL Archive
Zeitschrift:	Journal of applied entomology (1986), Jg. 130 (2006), Heft 3, S. 183-189
Veröffentlichung:	Berlin: Blackwell, 2006
Medientyp:	academicJournal
Umfang:	print, 20 ref
ISSN:	0931-2048 (print)
Schlagwort:	Agronomy, agriculture, phytopathology Agronomie, agriculture, phytopathologie Entomology Entomologie Sciences biologiques et medicales Biological and medical sciences Sciences biologiques fondamentales et appliquees. Psychologie Fundamental and applied biological sciences. Psychology Phytopathologie. Zoologie agricole. Protection des cultures et des forets Phytopathology. Animal pests. Plant and forest protection Protozoaires. Invertébrés Protozoa. Invertebrates Arthropoda Bacillaceae Bacillales Bactérie Bacteria Coreidae Déprédateur Pest Plaga Entomopathogène Entomopathogen Entomopatógeno Heteroptera Insecta Invertebrata Bacillus thuringiensis Extracellulaire Extracellular Extracelular Hémolysine Hemolysin Hemolisina Larve Larva Lutte antidéprédateur Pest management Manejo de plagas Mortalité Mortality Mortalidad Protéine Protein Proteína Riptortus clavatus bean bug combined larvicidal activity extracellular vegetative protein haemo- lysin
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Bioresources and Management Laboratory, Graduate School of Agriculture, Kyushu University, Fukuoka, Japan ; Biotechnology and Food Research Institute, Fukuoka Industrial Technology Center, Kurume, Japan Rights: Copyright 2006 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Phytopathology. Agricultural zoology. Crops and forests protection

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