Browsing by Author "Chung, Yong Suk"

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Colored Led Lights: Use One Color Alone or With Others for Growth in Hedyotis Corymbosa in Vitro
(Mdpi, 2023) Le, Anh Tuan; Choi, In-Lee; Han, Gyung-Deok; Kang, Ho-Min; Jung, Dae Ho; Park, Won-Pyo; Chung, Yong Suk
In recent years, light-emitting diode (LED) technology has been applied to improve crop production and induce targeted biochemical or physiological responses in plants. This study investigated the effect of different ratios of blue 450 nm and red 660 nm LEDs on the overall plant growth, photosynthetic characteristics, and total triterpenoid production in the leaves of Hedyotis corymbosa in vitro plants. The results showed that a high proportion of blue LED lights had a positive effect on enhancing photosynthesis and the overall biomass. In addition, blue LED lights were shown to be more effective in controlling the production of the total triterpenoid content compared with the red LED lights. Moreover, it was also found that plants grown under a high proportion of red LEDs exhibited reduced photosynthetic properties and even induced damage to the photosynthetic apparatus, which indicated that the blue or red LED lights played contrary roles in Hedyotis corymbosa.
Diversity Study of Common Buckwheat Germplasm in the Republic of Korea Using Gbs
(Springer, 2022) Park, Ji Eun; Kang, Yuna; Han, Gyung Deok; Yildiz, Mehtap; Kim, Seong-Hoon; Kim, Changsoo; Chung, Yong Suk
Common buckwheat is widely cultivated worldwide. Due to its bioactive compounds, there are vigorous studies on protein and metabolism. However, there are not many studies using genetic approaches. Especially researches on genetic diversity in common buckwheat germplasm are rare, although it is crucial for breeding better cultivars. Thus, the current study examined the genetic diversity of the randomly selected common buckwheat germplasm found in the Republic of Korea. The results show that there are not many genetic variances among those wild common buckwheat germplasm that were used in the current study. Although it needs to test more number of germplasm, it seems that more diversity is required to be able to breed cultivars for the future.
Phylogenetic Inference and Secondary Structure Predictions of Turkish Genotypes of Coriandrum Sativum (L.) Based on Its4 and Its5 Nrdna Sequences
(Springer, 2022) Furan, M. Alp; Yildiz, Mehtap; Karatas, Merve Dilek; Chung, Yong Suk
Coriander, Coriandrum sativum L., is an important medicinal plant belonging to the Apiaceae family, which is grown in many parts of Turkey. In this study, seven Turkish coriander varieties (Antakya, Arslan, Erbaa, Gurbuz, Kerkuk, Kudret-K, and Pelmus) were examined for phylogenetic relations using two ITS region (ITS4-ITS5) sequence information and their secondary structure analysis. The length of the nrDNA ITS sequences obtained in this study varied between 677 and 692 nucleotides for seven samples. The G + C content of the nrDNA ITS region ranged between 47.86 (ITS4) and 48.67% (ITS5). Secondary structural analysis revealed that variation between varieties is more unique. The AMOVA study confirmed the effectiveness of configuration analysis as variants accounted for the majority of the variance. In addition, variation within cultivars was significant (97%). This shows that a significant part of the variance detected in this study occurred among genotypes. Data analysis, including Shannon information index and scaled diversity overlap graph annotation, also showed that the highest level of heterozygosity occurred in the Arslan, Erbaa and Kudret-K genotypes, with cultivars showing more pronounced differences genotypically rather than geographically, consistent with the expected heterozygosity (80%). By verification of the PCoA analysis, the genotypes of Gurbuz and Arslan are very different from those of other groups. This supports the results of the cluster analysis, which showed that the Ankara-origin Gurbuz variety had a very different genotypic difference. Our analysis recommends the use of ITS4 sequence and secondary structure data at the intraspecific levels of coriander taxonomical classification. For the first time, a study has used both sequence information and secondary structural information to describe coriander at the varietal level of taxonomic classification.