@article{fdi:010061205, title = {{R}esponses of different geographic populations of two potato tuber moth species to genetic variants of {P}hthorimaea operculella granulovirus}, author = {{Z}eddam, {J}ean-{L}ouis and {L}{\'e}ry, {X}avier and {G}omez-{B}onilla, {Y}. and {E}spinel-{C}orreal, {C}. and {P}aez, {D}. and {R}ebaudo, {F}ran{\c{c}}ois and {L}opez-{F}erber, {M}.}, editor = {}, language = {{ENG}}, abstract = {{P}hthorimaea operculella granulovirus ({P}hop{GV}) belongs to the genus {B}etabaculovirus of the arthropod-infecting {B}aculoviridae. {P}hop{GV} is able to infect several gelechiid species. {A}mong them are the potato tuber moths {P}hthorimaea operculella {Z}eller and {T}ecia solanivora {P}ovolny (both {L}epidoptera: {G}elechiidae). {I}n various {S}outh {A}merican countries, {P}hop{GV}-based biopesticides are used to control either {P}.operculella or {T}.solanivora. {M}any trials have indicated that a particular viral isolate can exhibit very distinct pathogenicity when infecting different host species or different populations of one host species. {I}n this study, we compared host-pathogen interactions using various {P}hop{GV} isolates and various populations of {P}.operculella and {T}.solanivora. {V}irus isolates from {P}.operculella were more pathogenic against their original host species than against {T}.solanivora. {A} {P}hop{GV} isolated from {T}.solanivora was less efficient against {P}.operculella. {I}n addition, virus isolates differed in pathogenicity toward their hosts (i.e., lethal concentrations of isolates ranged from low to high). {U}nexpectedly, we also found that host populations of one species from distinct geographic origins did not differ significantly in susceptibility to the same {P}hop{GV} isolate. {T}his was the case for both host species and for five {P}hop{GV} isolates. {C}omparative restriction fragment length polymorphism ({RFLP}) analyses of 11 isolates including those used in bio-assays indicated three main regions of variation in the genome of {P}hop{GV}, corresponding to the regions of open reading frame {P}hop{GV}046, gene {P}hop{GV}129 (egt), and repeat 9 (located between open reading frames {P}hop{GV}083 and {P}hop{GV}084). {C}omparison of the nucleotide sequences of the insertions/deletions present in these regions were carried out for the most variable isolate, {JLZ}9f. {T}he results are discussed in the context of the production and use of {P}hop{GV} as a biological agent against these two pest species.}, keywords = {{B}etabaculovirus ; insect virus ; bioassay ; pathogenicity ; viral variant ; {T}ecia solanivora ; {L}epidoptera ; {G}elechiidae ; {P}hop{GV} ; {B}aculoviridae ; {COSTA} {RICA} ; {EQUATEUR} ; {COLOMBIE} ; {EGYPTE}}, booktitle = {}, journal = {{E}ntomologia {E}xperimentalis et {A}pplicata}, volume = {149}, numero = {2}, pages = {138--147}, ISSN = {0013-8703}, year = {2013}, DOI = {10.1111/eea.12115}, URL = {https://www.documentation.ird.fr/hor/fdi:010061205}, }