Comparative Analyses of Complete Chloroplast Genomes and Karyotypes of Allotetraploid and Its Putative Diploid Parental Species ( Series , Iridaceae).

The series in Korea comprises four species (, , and ), and the group includes some endangered species, owing to their high ornamental, economic, and conservation values. Among them, the putative allotetraploid, (2 = 4 = 50), is hypothesized to have originated from the hybridization of the diploids (2 = 2 = 22) and (2 = 2 = 28) based on morphological characters, chromosome numbers, and genome size additivity. Despite extensive morphological and molecular phylogenetical studies on the genus , little is known about Korean irises in terms of their complete chloroplast (cp) genomes and molecular cytogenetics that involve rDNA loci evolution based on fluorescence in situ hybridization (FISH).

Comparative analysis of two Korean irises (Iris ruthenica and I. uniflora, Iridaceae) based on plastome sequencing and micromorphology.

Iris ruthenica Ker Gawl. and I. uniflora Pall.

Cytological Study of Thunb. (Orchidaceae Juss.): An Endangered Species from Korea.

Changes in chromosome number and karyotype evolution are important to plant diversification, as they are both major drivers of speciation processes. Herein, chromosome number, karyotype, and genome size of the Korean lady's slipper orchid Thunb., an endangered species, were investigated in natural populations.

Rear-edge, low-diversity, and haplotypic uniformity in cold-adapted interglacial refugia populations.

The high genetic diversity of rear-edge refugia populations is predicted to have resulted from species repeatedly migrating to low latitudes during glacial periods over the course of Quaternary climate change. However, several recent empirical studies of cold-tolerant plants revealed the opposite pattern. We investigated whether current habitats of the cold-adapted and range-restricted in the Baekdudaegan, South Korea, and North Korea could be interglacial refugia, and documented how their rear-edge populations differ genetically from those of typical temperate species.

Genome Size and Chromosome Number Evolution in Korean L. Species (Iridaceae Juss.).

Chromosome numbers, karyotypes, and genome sizes of 14 L. (Iridaceae Juss.) species in Korea and their closely related taxon, , are presented and analyzed in a phylogenetic framework.

Overexpression of neurogenin1 induces neurite outgrowth in F11 neuroblastoma cells.

Neurogenin1 (Ngn1) is a basic helix-loop-helix (bHLH) transcription factor expressed in neuronal precursors in the developing nervous system. The function of Ngn1 in neurogenesis has been shown in various aspects. In this study, we investigated the neurogenic potential of Ngn1 using neuroblastoma cell line, F11, which could be induced to differentiate into neurons in the presence of cAMP.