Species‐complex diversification and host‐plant associations in Bemisia tabaci: A plant‐defense, detoxification perspective revealed by RNAseq analyses

Malka Osnat, Santos-Garcia Diego, Feldmesser Ester, Sharon Elad, Krause-Sakate Renate, Delatte Hélène, van Brunschot Sharon, Patel Mitulkumar, Visendi Muhindira Paul, Mugerwa Habibu, Seal Susan, Colvin John, Morin Shai. 2018. Species‐complex diversification and host‐plant associations in Bemisia tabaci: A plant‐defense, detoxification perspective revealed by RNAseq analyses. Molecular Ecology, 27 (1) : 4241-4256.

Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/nuccore/?term=SRP127757

Quartile : Q1, Sujet : ECOLOGY / Quartile : Q1, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY / Quartile : Q1, Sujet : EVOLUTIONARY BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : Insect‐plant associations and their role in diversification are mostly studied in specialists. Here, we aimed to identify macroevolution patterns in the relationships between generalists and their host plants that have the potential to promote diversification. We focused on the Bemisia tabaci species complex containing more than 35 cryptic species. Mechanisms for explaining this impressive diversification have focused so far on allopatric forces that assume a common, broad, host range. We conducted a literature survey which indicated that species in the complex differ in their host range, with only few showing a truly broad one. We then selected six species, representing different phylogenetic groups and documented host‐ranges. We tested if differences in the species expression profiles of detoxification genes, are shaped more by their phylogenetic relationships or by their ability to successfully utilize multiple hosts, including novel ones. Performance assays divided the six species into two groups of three, one showing higher performance on various hosts than the other (the lower‐performance group). The same grouping pattern appeared when the species were clustered according to their expression profiles. Only species placed in the lower‐performance group showed a tendency to lower the expression of multiple genes. Taken together, these findings bring evidence for the existence of a common detoxification “machinery”, shared between species that can perform well on multiple hosts. We raise the possibility that this “machinery” might have played a passive role in the diversification of complex, by allowing successful migration to new/novel environments, leading, in some cases, to fragmentation and speciation.

Mots-clés géographiques Agrovoc : République-Unie de Tanzanie, Pakistan, Brésil, Ouganda, Pérou

Classification Agris : H10 - Ravageurs des plantes
L60 - Taxonomie et géographie animales
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

• Malka Osnat, Hebrew University of Jerusalem (ISR)
• Santos-Garcia Diego, Hebrew University of Jerusalem (ISR)
• Feldmesser Ester, Weizmann Institute of Science (ISR)
• Sharon Elad, Hebrew University of Jerusalem (ISR)
• Krause-Sakate Renate, USP (BRA)
• Delatte Hélène, CIRAD-BIOS-UMR PVBMT (REU)
• van Brunschot Sharon, University of Queensland (AUS)
• Patel Mitulkumar, University of Greenwich (GBR)
• Visendi Muhindira Paul, University of Greenwich (GBR)
• Mugerwa Habibu, University of Greenwich (GBR)
• Seal Susan, NRI (GBR)
• Colvin John, University of Greenwich (GBR)
• Morin Shai, Hebrew University of Jerusalem (ISR) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/588811/)

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