Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?

Determining which factors contribute to the formation and maintenance of genetic divergence to evaluate their relative importance as a cause of biological differentiation is among the major challenges in evolutionary biology. In Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) two host strains...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Juárez, M.L., Schöfl, G., Vera, M.T., Vilardi, J.C., Murúa, M.G., Willink, E., Hänniger, S., Heckel, D.G., Groot, A.T.
Formato: JOUR
Materias:
AFLP
Fall armyworm
Host fidelity
Host-associated differentiation
Lepidoptera
mtCOI
Noctuidae
Triose phosphate isomerase
Gossypium hirsutum
Poaceae
Spodoptera frugiperda
Zea mays
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00138703_v152_n3_p182_Juarez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00138703_v152_n3_p182_Juarez
record_format dspace
spelling todo:paper_00138703_v152_n3_p182_Juarez2023-10-03T14:11:28Z Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains? Juárez, M.L. Schöfl, G. Vera, M.T. Vilardi, J.C. Murúa, M.G. Willink, E. Hänniger, S. Heckel, D.G. Groot, A.T. AFLP Fall armyworm Host fidelity Host-associated differentiation Lepidoptera mtCOI Noctuidae Triose phosphate isomerase Gossypium hirsutum Lepidoptera Noctuidae Poaceae Spodoptera frugiperda Zea mays Determining which factors contribute to the formation and maintenance of genetic divergence to evaluate their relative importance as a cause of biological differentiation is among the major challenges in evolutionary biology. In Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) two host strains have been recognized in the 1980s: the corn-strain prefers maize, sorghum, and cotton, whereas the rice-strain prefers rice and wild grasses. However, it is not clear to what extent these so-called 'strains', which have also been called 'host races' or even 'sibling species', are really associated with host plants. Due to the indeterminate evolutionary status, we will use the term 'host forms' (sensu Funk). Here, we characterized populations collected from maize, rice, and wild grasses from three countries in South America. Using two mitochondrial cytochrome oxidase I (mtCOI) markers and 10 polymorphisms in the triose phosphate isomerase (Tpi) gene, we found various patterns of host association. Two hundred twenty-seven nuclear amplified fragment length polymorphisms (AFLPs) markers revealed significant genetic differentiation among populations, which was generally correlated to the host from which the larvae were collected. Using a multivariate discriminant analysis and a Bayesian clustering approach, we found that individuals could be grouped into 2-5 genetically distinct clusters, depending on the method. Together, our results indicate that although host-associated differentiation is present in this species, it does not account for all observable genetic variation and other factors must be maintaining genetic differentiation between these forms. Therefore, the term 'host strains' should be abandoned and 'host forms' should be used instead for S. frugiperda. © 2014 The Netherlands Entomological Society. Fil:Vera, M.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00138703_v152_n3_p182_Juarez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic AFLP
Fall armyworm
Host fidelity
Host-associated differentiation
Lepidoptera
mtCOI
Noctuidae
Triose phosphate isomerase
Gossypium hirsutum
Lepidoptera
Noctuidae
Poaceae
Spodoptera frugiperda
Zea mays
spellingShingle AFLP
Fall armyworm
Host fidelity
Host-associated differentiation
Lepidoptera
mtCOI
Noctuidae
Triose phosphate isomerase
Gossypium hirsutum
Lepidoptera
Noctuidae
Poaceae
Spodoptera frugiperda
Zea mays
Juárez, M.L.
Schöfl, G.
Vera, M.T.
Vilardi, J.C.
Murúa, M.G.
Willink, E.
Hänniger, S.
Heckel, D.G.
Groot, A.T.
Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
topic_facet AFLP
Fall armyworm
Host fidelity
Host-associated differentiation
Lepidoptera
mtCOI
Noctuidae
Triose phosphate isomerase
Gossypium hirsutum
Lepidoptera
Noctuidae
Poaceae
Spodoptera frugiperda
Zea mays
description Determining which factors contribute to the formation and maintenance of genetic divergence to evaluate their relative importance as a cause of biological differentiation is among the major challenges in evolutionary biology. In Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) two host strains have been recognized in the 1980s: the corn-strain prefers maize, sorghum, and cotton, whereas the rice-strain prefers rice and wild grasses. However, it is not clear to what extent these so-called 'strains', which have also been called 'host races' or even 'sibling species', are really associated with host plants. Due to the indeterminate evolutionary status, we will use the term 'host forms' (sensu Funk). Here, we characterized populations collected from maize, rice, and wild grasses from three countries in South America. Using two mitochondrial cytochrome oxidase I (mtCOI) markers and 10 polymorphisms in the triose phosphate isomerase (Tpi) gene, we found various patterns of host association. Two hundred twenty-seven nuclear amplified fragment length polymorphisms (AFLPs) markers revealed significant genetic differentiation among populations, which was generally correlated to the host from which the larvae were collected. Using a multivariate discriminant analysis and a Bayesian clustering approach, we found that individuals could be grouped into 2-5 genetically distinct clusters, depending on the method. Together, our results indicate that although host-associated differentiation is present in this species, it does not account for all observable genetic variation and other factors must be maintaining genetic differentiation between these forms. Therefore, the term 'host strains' should be abandoned and 'host forms' should be used instead for S. frugiperda. © 2014 The Netherlands Entomological Society.
format JOUR
author Juárez, M.L.
Schöfl, G.
Vera, M.T.
Vilardi, J.C.
Murúa, M.G.
Willink, E.
Hänniger, S.
Heckel, D.G.
Groot, A.T.
author_facet Juárez, M.L.
Schöfl, G.
Vera, M.T.
Vilardi, J.C.
Murúa, M.G.
Willink, E.
Hänniger, S.
Heckel, D.G.
Groot, A.T.
author_sort Juárez, M.L.
title Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
title_short Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
title_full Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
title_fullStr Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
title_full_unstemmed Population structure of Spodoptera frugiperda maize and rice host forms in South America: Are they host strains?
title_sort population structure of spodoptera frugiperda maize and rice host forms in south america: are they host strains?
url http://hdl.handle.net/20.500.12110/paper_00138703_v152_n3_p182_Juarez
work_keys_str_mv AT juarezml populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT schoflg populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT veramt populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT vilardijc populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT muruamg populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT willinke populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT hannigers populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT heckeldg populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
AT grootat populationstructureofspodopterafrugiperdamaizeandricehostformsinsouthamericaaretheyhoststrains
_version_ 1782027075569319936

Ejemplares similares