Bacillus thuringiensis toxins: an overview of their biocidal activity
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Bacillus thuringiensis (Bt) is a Gram positive, spore-forming bacterium that synthesizes parasporal crystalline inclusions containing Cry and Cyt proteins, some of which are toxic against a wide range of insect orders, nematodes and human-cancer cells. These toxins have been successfully used as bioinsecticides against caterpillars, beetles, and flies, including mosquitoes and blackflies. Bt also ... [++]
Bacillus thuringiensis (Bt) is a Gram positive, spore-forming bacterium that synthesizes parasporal crystalline inclusions containing Cry and Cyt proteins, some of which are toxic against a wide range of insect orders, nematodes and human-cancer cells. These toxins have been successfully used as bioinsecticides against caterpillars, beetles, and flies, including mosquitoes and blackflies. Bt also synthesizes insecticidal proteins during the vegetative growth phase, which are subsequently secreted into the growth medium. These proteins are commonly known as vegetative insecticidal proteins (Vips) and hold insecticidal activity against lepidopteran, coleopteran and some homopteran pests. A less well characterized secretory protein with no amino acid similarity to Vip proteins has shown insecticidal activity against coleopteran pests and is termed Sip (secreted insecticidal protein). Bin-like and ETX_MTX2-family proteins (Pfam PF03318), which share amino acid similarities with mosquitocidal binary (Bin) and Mtx2 toxins, respectively, from Lysinibacillus sphaericus, are also produced by some Bt strains. In addition, vast numbers of Bt isolates naturally present in the soil and the phylloplane also synthesize crystal proteins whose biological activity is still unknown. In this review, we provide an updated overview of the known active Bt toxins to date and discuss their activities. [--]
Bacillus thuringiensis, Bt biopesticides, Toxic activity, Cry toxins, Cyt toxins, Vip toxins, Sip toxins, Parasporins
Toxins, 2014, 6(12), 3296-3325
Universidad Pública de Navarra. Instituto de Agrobiotecnología / Nafarroako Unibertsitate Publikoa. Agrobioteknologiako Institutua / Universidad Pública de Navarra. Departamento de Producción Agraria / Nafarroako Unibertsitate Publikoa. Nekazaritza Ekoizpena Saila
Versión del editor
This research was supported by the Spanish Ministry of Science and Innovation (grant reference AGL2009-13340-C02) and by the Universidad Pública de Navarra (PhD contract awarded to Leopoldo Palma).
Aparece en las colecciones
Los documentos de Academica-e están protegidos por derechos de autor con todos los derechos reservados, a no ser que se indique lo contrario.
La licencia del ítem se describe como © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license.
Mostrando ítems relacionados por Título, autor o materia.
Characterisation of the mgo operon in Pseudomonas syringae pv. syringae UMAF0158 that is required for mangotoxin production Arrebola, Eva; Carrión, Víctor J.; Cazorla, Francisco M.; Pérez García, Alejandro; Murillo Martínez, Jesús ; Vicente, Antonio de (BioMed Central, 2012) Artículo / ArtikuluaBackground: Mangotoxin is an antimetabolite toxin that is produced by strains of Pseudomonas syringae pv. syringae; mangotoxin-producing strains are primarily isolated from mango tissues with symptoms of bacterial ...
Draft genome sequences of two bacillus thuringiensis strains and characterization of a putative 41.9-kDa insecticidal toxin Palma Dovis, Leopoldo ; Muñoz, Delia ; Berry, Colin; Murillo Martínez, Jesús ; Caballero Murillo, Primitivo (MDPI, 2014) Artículo / ArtikuluaIn this work, we report the genome sequencing of two Bacillus thuringiensis strains using Illumina next-generation sequencing technology (NGS). Strain Hu4-2, toxic to many lepidopteran pest species and to some mosquitoes, ...
Expression of the gene for resistance to phaseolotoxin (argK) depends on the activity of genes phtABC in Pseudomonas syringae pv. Phaseolicola Aguilera, Selene; Torre Zavala, Susana de la; Hernández Flores, José Luis; Murillo Martínez, Jesús ; Bravo, Jaime; Álvarez Morales, Ariel (Public Library of Science, 2012) Artículo / ArtikuluaThe bacterium Pseudomonas syringae pv. phaseolicola produces phaseolotoxin in a temperature dependent manner, being optimally produced between 18 degrees C and 20 degrees C, while no detectable amounts are present above ...