Soowon Cho

Prof. Soowon Cho

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Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 October 2008 in Systematic Entomology
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Journal Article
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SCSoowon Cho
Soowon Cho
AMAndrew Mitchell
Andrew Mitchell
CMCharles Mitter
Charles Mitter
JRJerome Regier
Jerome Regier
MMMarcus Matthews
Marcus Matthews
RRRon Robertson
Ron Robertson
The Heliothinae are a cosmopolitan subfamily of about 365 species that include some of the world’s most injurious crop pests. This study re‐assesses evolutionary relationships within heliothines, providing an improved phylogeny and classification to support ongoing intensive research on heliothine genomics, systematics, and biology. Our phylogeny estimate is based on two nuclear gene regions, namely elongation factor‐1α (EF‐1α; 1240 bp) and dopa decarboxylase (DDC; 687 bp), and on the barcoding region of mitochondrial cytochrome oxidase I (COI; 708 bp), providing a total of 2635 bp. These were sequenced for 71 heliothines, representing all major genera and nearly all recognized subgenera and species groups, and for 16 outgroups representing all major lineages of trifine Noctuidae. Analysis of the combined data by maximum likelihood, unweighted parsimony and Bayesian methods gave nearly identical topologies, and the individual gene trees showed only one case of potentially strong conflict. Relationships among genera and subgenera are resolved with strong bootstrap support. The earliest‐diverging lineages ( c . 200 species in total) consist almost entirely of host specialists, reflecting the inferred ancestral heliothine host range under parsimony. The remaining species form a clade – the Heliothis group – that includes most of the polyphages (30% of heliothines) and all of the major pests. Many other species in the Heliothis group, however, are host specialists. Our results extend previous efforts to subdivide this large clade, and show the most notorious pest groups, the corn earworm complex ( Helicoverpa ) and the tobacco budworm ( Heliothis virescens ) group, to be closely related, joining with a small oligophagous genus in what we term the major‐pest lineage. Thus, genomic/experimental results from one model pest may extrapolate well to other pest species. The frequency of evolutionary expansion and contraction in host range appears to increase dramatically at the base of the Heliothis group, in contrast to the case for earlier‐diverging lineages. We ascribe this difference provisionally to differential evolutionary constraints arising from contrasting life‐history syndromes. Host‐specific behaviour and crypsis, coupled with low fecundity and vagility, may discourage host‐range expansion in earlier‐diverging lineages. By contrast, in the Heliothis group, the absence of host‐specific traits, coupled with high vagility and fecundity, may more readily permit expansion or contraction of the host range in response to varying ecological pressures such as host species abundance or differential competition and predation.

8 December 2008 in Entomological Research
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Journal Article
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JHJung Min Han
Jung Min Han
Hyojoong KimHyojoong Kim
Hyojoong Kim
ELEun Ji Lim
Eun Ji Lim
SLSeunghwan Lee
Seunghwan Lee
YKYong‐Jung Kwon
Yong‐Jung Kwon
SCSoowon Cho
Soowon Cho

22 June 2016 in PeerJ
Verified
Journal Article
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SCSoowon Cho
Soowon Cho
SESamantha W. Epstein
Samantha W. Epstein
KMKim Mitter
Kim Mitter
CHChris A. Hamilton
Chris A. Hamilton
DPDavid Plotkin
David Plotkin
AKAkito Y. Kawahara
Akito Y. Kawahara
Butterflies and moths (Lepidoptera) comprise significant portions of the world’s natural history collections, but a standardized tissue preservation protocol for molecular research is largely lacking. Lepidoptera have traditionally been spread on mounting boards to display wing patterns and colors, which are often important for species identification. Many molecular phylogenetic studies have used legs from pinned specimens as the primary source for DNA in order to preserve a morphological voucher, but the amount of available tissue is often limited. Preserving an entire specimen in a cryogenic freezer is ideal for DNA preservation, but without an easily accessible voucher it can make specimen identification, verification, and morphological work difficult. Here we present a procedure that creates accessible and easily visualized “wing vouchers” of individual Lepidoptera specimens, and preserves the remainder of the insect in a cryogenic freezer for molecular research. Wings are preserved in protective holders so that both dorsal and ventral patterns and colors can be easily viewed without further damage. Our wing vouchering system has been implemented at the University of Maryland (AToL Lep Collection) and the University of Florida (Florida Museum of Natural History, McGuire Center of Lepidoptera and Biodiversity), which are among two of the largest Lepidoptera molecular collections in the world.

10 March 2014 in Zoologica Scripta
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Journal Article
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TKTaeho Kim
Taeho Kim
JKJiyeon Kim
Jiyeon Kim
SCSoowon Cho
Soowon Cho
GMGi Sik Min
Gi Sik Min
CPChungoo Park
Chungoo Park
JPJoong-Ki Park
Joong-Ki Park

15 March 2019 in Zootaxa
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Journal Article
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KPKyu-Tek Park
Kyu-Tek Park
WMWolfram Mey
Wolfram Mey
JKJun-Mo Koo
Jun-Mo Koo
JPJurate DE Prins
Jurate DE Prins
SCSoowon Cho
Soowon Cho
Ptilothyris Walsingham, 1897, a poorly known Afrotropical genus of Lecithoceridae, is revised. Eight new species are described and illustrated: P. subcucullata Park, sp. nov., P. crassiella Park, sp. nov., P. drepanodes Park, sp. nov., P. enormisella Park, sp. nov., P. hylodes Park, sp. nov., P. leifaarviki Park, sp. nov., P. pilosa Park, sp. nov., and P. vokaensis Park, sp. nov. Each species is compared with type specimens of the related species deposited in various museums worldwide. COI barcode sequences of six species were successfully obtained and are provided. Of the 13 previously known African species of the genus, P. serangota ab. cyanea Ghesquière, 1940 is synonymized with P. serangota Meyrick, 1932, and the following three species are excluded from the genus: brachysema Meyrick, 1938, crocophracta Meyrick, 1938, and nemophorella Ghesquière, 1940. The latter three will be transferred to related genera in forthcoming studies. Adults and genitalia of all the known species including the new species are illustrated, and a key to the species is provided.

1 April 2012 in Animal Cells and Systems
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Journal Article
Open access
Bong-Kyu ByunBong-Kyu Byun
Bong-Kyu Byun
BLBong-Woo Lee
Bong-Woo Lee
ELEun-Sol Lee
Eun-Sol Lee
DCDeuk-Soo Choi
Deuk-Soo Choi
YPYoug Mi Park
Youg Mi Park
SCSoowon Cho
Soowon Cho
We reviewed the genus Adoxophyes (Lepidoptera: Tortricidae) from Korea and recognized three species of the genus. Among them, A. paraorana sp. nov., formerly misidentified as A. orana in Korea, is described as new to science. Adoxophyes orana, a notorious pest known in most Eurasian countries for a long time, turns out to be only recently introduced or found in Korea. Photographs of the adults and genitalia of the species are provided. Specific distinction was supported by the COI barcode study.