S
Sandra Nhim
Researcher at Institut national de la recherche agronomique
Publications - 9
Citations - 95
Sandra Nhim is an academic researcher from Institut national de la recherche agronomique. The author has contributed to research in topics: Genome & Sympatric speciation. The author has an hindex of 5, co-authored 9 publications receiving 58 citations. Previous affiliations of Sandra Nhim include French Institute of Health and Medical Research.
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Journal ArticleDOI
Characterization and expression profiling of microRNAs in response to plant feeding in two host-plant strains of the lepidopteran pest Spodoptera frugiperda
Yves Moné,Sandra Nhim,Sylvie Gimenez,Fabrice Legeai,Fabrice Legeai,Imène Seninet,Hugues Parrinello,Nicolas Nègre,Emmanuelle d'Alençon +8 more
TL;DR: The role of microRNAs, important gene expression regulators, in response to host-plant change and in adaptive evolution is addressed and a set of the differentially expressed miRNAs that respond to the plant diet, or differ constitutively between the two host plant strains is identified.
Journal ArticleDOI
Positive selection alone is sufficient for whole genome differentiation at the early stage of speciation process in the fall armyworm
Kiwoong Nam,Sandra Nhim,Stéphanie Robin,Anthony Bretaudeau,Nicolas Nègre,Emmanuelle d'Alençon +5 more
TL;DR: It is concluded that genomic differentiation may occur at the early stage of a speciation process in the fall armyworm and that mild positive selection targeting many loci alone is sufficient evolutionary force for generating the pattern of genomic differentiation.
Posted ContentDOI
Transcriptional differences between the two host strains of Spodoptera frugiperda (Lepidoptera: Noctuidae)
Marion Orsucci,Yves Moné,Philippe Audiot,Sylvie Gimenez,Sandra Nhim,Rima Nait-Saidi,Marie Frayssinet,Guillaume Dumont,Jean-Paul Boudon,Marin Vabre,Stéphanie Rialle,Rachid Koual,Gael J. Kergoat,Rodney N. Nagoshi,Robert L. Meagher,Emmanuelle d'Alençon,Nicolas Nègre +16 more
TL;DR: Variations in mitochon rial transcription levels are among the most substantial and consistent differences between the two strains, and it is believed the mitochondria may have a significant role in driving strain divergence.
Posted ContentDOI
Transcriptional plasticity evolution in two strains of Spodoptera frugiperda (Lepidoptera: Noctuidae) feeding on alternative host-plants
Marion Orsucci,Yves Moné,Philippe Audiot,Sylvie Gimenez,Sandra Nhim,Rima Nait-Saidi,Marie Frayssinet,Guillaume Dumont,Alexandra Pommier,Jean-Paul Boudon,Marin Vabre,Stéphanie Rialle,Rachid Koual,Gael J. Kergoat,Rodney N. Nagoshi,Robert L. Meagher,Emmanuelle d'Alençon,Nicolas Nègre +17 more
TL;DR: It is shown that mitochondrial transcription is the main difference between strains, and a difference in mitochondrial function may be the basis for a shift in host plant and could be involved in hybrid incompatibility, raising the hypothesis that mitochondrial genome is themain target of selection between the two strains.
Posted ContentDOI
Divergent selection causes whole genome differentiation without physical linkage among the targets in Spodoptera frugiperda (Noctuidae)
Kiwoong Nam,Sandra Nhim,Stéphanie Robin,Stéphanie Robin,Anthony Bretaudeau,Anthony Bretaudeau,Nicolas Nègre,Emmanuelle d'Alençon +7 more
TL;DR: Analysis of whole genome sequences from the Fall armyworm strains from Mississippi reveals that divergent selection alone is sufficient to generate genomic differentiation, and any following diversifying factors may increase the level of genetic differentiation between diverging strains in the process of speciation.