Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci

Cassava is a vital food-security crop in Sub-Saharan Africa. Cassava crops are, however, severely affected by viral diseases transmitted by members of the whitefly species complex Bemisia tabaci. We have here investigated the role of olfaction in host selection behavior of the cassava whitefly B. ta...

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Autores principales:	Latifa M. Mrisho, Daniel G. Maeda, Zaide M. Ortiz, Hamid R. Ghanavi, James P. Legg, Marcus C. Stensmyr
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	olfaction whiteflies cassava mosaic disease cassava brown streak disease Bemisia tabaci Evolution QH359-425 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/39644a5023114e2aa87d7c0d6fd0fef6
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spelling	oai:doaj.org-article:39644a5023114e2aa87d7c0d6fd0fef62021-11-18T09:56:06ZInfluence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci2296-701X10.3389/fevo.2021.775778https://doaj.org/article/39644a5023114e2aa87d7c0d6fd0fef62021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fevo.2021.775778/fullhttps://doaj.org/toc/2296-701XCassava is a vital food-security crop in Sub-Saharan Africa. Cassava crops are, however, severely affected by viral diseases transmitted by members of the whitefly species complex Bemisia tabaci. We have here investigated the role of olfaction in host selection behavior of the cassava whitefly B. tabaci SSA-ESA biotype. Surprisingly, we find that the whiteflies appear to make little use of olfaction to find their favored host. The cassava whitely shows a highly reduced olfactory system, both at the morphological and molecular level. Whitefly antennae possess only 15 sensilla with possible olfactory function, and from the genome we identified just a handful of candidate chemoreceptors, including nine tuning odorant receptors, which would afford the whitefly with one of the smallest olfactomes identified from any insect to date. Behavioral experiments with host and non-host plants, as well as with identified specific volatiles from these sources, suggest that the few input channels present are primarily tuned toward the identification of unwanted features, rather than favored ones, a strategy quite unlike most other insects. The demonstrated repellence effect of specific volatile chemicals produced by certain plants unflavored by whiteflies suggests that intercropping with these plants could be a viable strategy to reduce whitefly infestations in cassava fields.Latifa M. MrishoLatifa M. MrishoDaniel G. MaedaZaide M. OrtizHamid R. GhanaviJames P. LeggMarcus C. StensmyrFrontiers Media S.A.articleolfactionwhitefliescassava mosaic diseasecassava brown streak diseaseBemisia tabaciEvolutionQH359-425EcologyQH540-549.5ENFrontiers in Ecology and Evolution, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	olfaction whiteflies cassava mosaic disease cassava brown streak disease Bemisia tabaci Evolution QH359-425 Ecology QH540-549.5
spellingShingle	olfaction whiteflies cassava mosaic disease cassava brown streak disease Bemisia tabaci Evolution QH359-425 Ecology QH540-549.5 Latifa M. Mrisho Latifa M. Mrisho Daniel G. Maeda Zaide M. Ortiz Hamid R. Ghanavi James P. Legg Marcus C. Stensmyr Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
description	Cassava is a vital food-security crop in Sub-Saharan Africa. Cassava crops are, however, severely affected by viral diseases transmitted by members of the whitefly species complex Bemisia tabaci. We have here investigated the role of olfaction in host selection behavior of the cassava whitefly B. tabaci SSA-ESA biotype. Surprisingly, we find that the whiteflies appear to make little use of olfaction to find their favored host. The cassava whitely shows a highly reduced olfactory system, both at the morphological and molecular level. Whitefly antennae possess only 15 sensilla with possible olfactory function, and from the genome we identified just a handful of candidate chemoreceptors, including nine tuning odorant receptors, which would afford the whitefly with one of the smallest olfactomes identified from any insect to date. Behavioral experiments with host and non-host plants, as well as with identified specific volatiles from these sources, suggest that the few input channels present are primarily tuned toward the identification of unwanted features, rather than favored ones, a strategy quite unlike most other insects. The demonstrated repellence effect of specific volatile chemicals produced by certain plants unflavored by whiteflies suggests that intercropping with these plants could be a viable strategy to reduce whitefly infestations in cassava fields.
format	article
author	Latifa M. Mrisho Latifa M. Mrisho Daniel G. Maeda Zaide M. Ortiz Hamid R. Ghanavi James P. Legg Marcus C. Stensmyr
author_facet	Latifa M. Mrisho Latifa M. Mrisho Daniel G. Maeda Zaide M. Ortiz Hamid R. Ghanavi James P. Legg Marcus C. Stensmyr
author_sort	Latifa M. Mrisho
title	Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
title_short	Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
title_full	Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
title_fullStr	Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
title_full_unstemmed	Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci
title_sort	influence of olfaction in host-selection behavior of the cassava whitefly bemisia tabaci
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/39644a5023114e2aa87d7c0d6fd0fef6
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Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci

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