Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis

Fil: Coviella, Carlos Eduardo. Universidad Nacional de Luján; Argentina.

Detalles Bibliográficos
Autores principales: Coviella, Carlos Eduardo, Trumble, John T.
Formato: Artículo Artículo acceptedVersion
Lenguaje:Español
Inglés
Publicado: BioControl 2022
Materias:
Biological
Control
Change
CO2
Bacillus
Thuringiensis
Acceso en línea:http://ri.unlu.edu.ar/xmlui/handle/rediunlu/1096
Aporte de:
REDIUNLu - Repositorio Digital Institucional de Acceso Abierto - Universidad Nacional de Luján (UNLu) de Universidad Nacional de Luján (UNLu)
id I62-R168-rediunlu-1096
record_format dspace
spelling I62-R168-rediunlu-10962024-08-30T20:56:51Z Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis Coviella, Carlos Eduardo Trumble, John T. Biological Control Change CO2 Bacillus Thuringiensis Fil: Coviella, Carlos Eduardo. Universidad Nacional de Luján; Argentina. Fil: Coviella, Carlos Eduardo. Department of Entomology, University of California; United States of America. Fil: Trumble, John T. Department of Entomology, University of California; United States of America. Toxins from Bacillus thuringiensis have been used as pest management tools for more than 50 years. The effect of these toxins depends on the quantity of Bacillus thuringiensis (Bt) toxins ingested by susceptible insects. Food ingestion is affected by CO2 concentration; plants grown in elevated CO2 often have increased carbon/nitrogen ratios (C/N), resulting in greater leaf area consumption. Therefore, we hypothesized that elevated CO2 would improve the efficacy of foliar applications of B. thuringiensis. Cotton plants were grown at either ambient (360–380 l/l) or elevated CO2 (900 l/l). Groups of plants in both CO2 treatments were exposed to low (30 mg/kg soil/week) or high (130 mg/kg soil/week) nitrogen (N) fertilization levels in a split plot design. The resulting plants were assessed for N and carbon (C) contents. Leaf disks from the same plants were dipped in a Bt solution and then fed to Spodoptera exigua (Hübner), an insect species of considerable economic importance. Elevated CO2 significantly reduced total N, and increased the C/N. Nitrogen fertilization significantly affected consumption by early stadia larvae, larval weight gain, and relative growth rate (RGR). Interactions between CO2 concentration and N fertilization level significantly impacted late stadia larval food consumption, and through differential Bt toxin intake, affected duration of larval stage and mortality to the adult stage.We conclude that the elevated atmospheric CO2 concentrations expected in the next century will interact with commercial fertilization practices to enhance the efficacy of B. thuringiensis formulations applied topically to crops. The implications for improved control are discussed. 2022-04-19T17:25:41Z 2022-04-19T17:25:41Z 2000-02-01 Article info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/acceptedVersion http://ri.unlu.edu.ar/xmlui/handle/rediunlu/1096 spa en info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf BioControl
institution Universidad Nacional de Luján (UNLu)
institution_str I-62
repository_str R-168
collection REDIUNLu - Repositorio Digital Institucional de Acceso Abierto - Universidad Nacional de Luján (UNLu)
language Español
Inglés
topic Biological
Control
Change
CO2
Bacillus
Thuringiensis
spellingShingle Biological
Control
Change
CO2
Bacillus
Thuringiensis
Coviella, Carlos Eduardo
Trumble, John T.
Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
topic_facet Biological
Control
Change
CO2
Bacillus
Thuringiensis
description Fil: Coviella, Carlos Eduardo. Universidad Nacional de Luján; Argentina.
format Article
Artículo
Artículo
acceptedVersion
author Coviella, Carlos Eduardo
Trumble, John T.
author_facet Coviella, Carlos Eduardo
Trumble, John T.
author_sort Coviella, Carlos Eduardo
title Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
title_short Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
title_full Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
title_fullStr Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
title_full_unstemmed Effect of elevated atmospheric carbon dioxide on the use of foliar application of Bacillus thuringiensis
title_sort effect of elevated atmospheric carbon dioxide on the use of foliar application of bacillus thuringiensis
publisher BioControl
publishDate 2022
url http://ri.unlu.edu.ar/xmlui/handle/rediunlu/1096
work_keys_str_mv AT coviellacarloseduardo effectofelevatedatmosphericcarbondioxideontheuseoffoliarapplicationofbacillusthuringiensis
AT trumblejohnt effectofelevatedatmosphericcarbondioxideontheuseoffoliarapplicationofbacillusthuringiensis
_version_ 1809801713493737472

Ejemplares similares