Abstract Detail

Population Genetics/Genomics

Lee, Soo-Rang [1], Son, Dong-Chan [2], Jo, Yeong-Seok [3].

Genetic diversity pattern reveals drivers of burcucumber (Sicyos angulatus L.) invasion in South Korea.

Biological invasion can be characterized by both demography and dispersal, which leave tractable genetic signatures. Population genetics study of an invasive species, thus provides invaluable insights into the patterns of species colonization from the initial and secondary introductions to range expansion. Burcucumber, one of the most detrimental alien plants in crop production, has recently colonized South Korea and rapidly spread posing great threat to the natural ecosystem. We employed 2,696 genome-wide single nucleotide polymorphisms to assess the effect on demography of 24 populations (364 genotypes) across five major river basins with the east coastal streams in South Korea. Landscape genetics approach adopting circuit theory and MaxEnt was applied to address the importance of dispersal and contributors of habitat model. Our data suggested that the primary determinant of burcucumber invasion in South Korea is the demography. Burcucumber colonization in Korea has strongly affected by demographic bottlenecks and multiple introductions, whereas environmental factors influenced largely on the distribution was not the driving force of invasion. Our work highlighted the significance of preventing secondary introductions, particularly for aggressive weedy plants such as the Korean burcucumber.

1 - Chosun University, Dept. of Biology Education, #4507, Dept. of Biology Education, College of Natural Sciences, 309 Pilmun-Daero, Dong-Gu, Gwangju, 61452, South Korea
2 - Korea National Arboretum
3 - Daegu University

Keywords:
none specified

Presentation Type: Poster
Number: PPG010
Abstract ID:996
Candidate for Awards:None