A5020176989- Food Quality and Safety Studies
- Agriculture, Soil, Plant Science
- Plant Virus Research Studies
- Plant Disease Resistance and Genetics
- Plant Pathogens and Fungal Diseases
- Garlic and Onion Studies
- Photosynthetic Processes and Mechanisms
- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
- Postharvest Quality and Shelf Life Management
- Phytochemicals and Antioxidant Activities
- Food composition and properties
- Plant Disease Management Techniques
- Fermentation and Sensory Analysis
- Plant Pathogenic Bacteria Studies
- Plant-Microbe Interactions and Immunity
- Advances in Cucurbitaceae Research
- Potato Plant Research
- Plant Molecular Biology Research
- Cocoa and Sweet Potato Agronomy
- Plant and Fungal Interactions Research
- Biochemical Analysis and Sensing Techniques
- Plant Gene Expression Analysis
- Nematode management and characterization studies
- Plant Physiology and Cultivation Studies
Rural Development Administration
2013-2024
Seoul National University
2024
Institute of Crop Science
2010-2013
Chonnam National University
2013
Abstract Sweetpotato ( Ipomoea batatas ) is an autohexaploid species with 90 chromosomes (2n = 6x 90) and a basic chromosome number of 15, therefore regarded as one the most challenging for high-density genetic map construction. Here, we used single nucleotide polymorphisms (SNPs) identified by double-digest restriction site-associated DNA sequencing based on next-generation technology to construct sweetpotato. We then aligned sequence reads onto reference genome I. trifida , likely diploid...
Abstract BACKGROUND The ability of heat treatment with a soaking solvent to increase soluble phenolic compounds due the liberation or breakdown cell matrix has been investigated in various plants. This study changes and antioxidant activities 12 sweet potato cultivars after distilled water prethanol A. RESULTS highest total polyphenol content (134.67 mg gallic acid equivalents/g extract residue) flavonoid (65.43 catechin was observed ‘Jami’ (JM) cultivar Higher generally purple cultivars....
Root-knot nematodes (RKN) cause significant damage to sweetpotato plants and losses in yield quality. Reactive oxygen species (ROS) play an important role plant defenses, with levels of ROS-detoxifying antioxidant enzymes tightly regulated during pathogen infection. In this study, ROS metabolism was examined three RKN-resistant RKN-susceptible cultivars. The superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) were assessed, as lignin-related metabolism. RKN-infected roots, both...
Sweet potato is grown extensively from tropical to temperate regions and an important food crop worldwide. In this study, we established detection methods for 17 major sweet viruses using single multiplex RT-PCR assays. To investigate the current incidence of viral diseases, collected 154 samples various cultivars showing virus-like symptoms 40 fields in 10 Korean regions, analyzed them by specific primers each viruses. Of possible viruses, detected eight our samples. feathery mottle virus...
Sweetpotato (Ipomoea batatas [L.] Lam) is suitable for growth on marginal lands due to its abiotic stress tolerance. However, severe environmental conditions including low temperature pose a serious threat the productivity and expanded cultivation of this crop. In study, we aimed develop sweetpotato plants with enhanced tolerance stress. P3 proteins are plant-specific ribosomal P-proteins that act as both protein RNA chaperones increase heat cold in Arabidopsis. Here, generated transgenic...
In this study, we aimed to characterize fungal samples from necrotic lesions on collar regions observed in different sweetpotato growing during 2015 and 2016 Korea. Sclerotia appeared the root zone soil surface, white dense mycelia were observed. At later stages of infection, mother roots quickly rotted, large areas plants destroyed. The disease occurrence was monitored at 45 84 farms, 11.8% 6.8% land found be infected 2016, respectively. Fungi isolated samples, 36 strains preserved. Based...
Abstract Sweetpotato ( Ipomoea batatas (L.) Lam) is the world’s seventh most important food crop by production quantity. Cultivated sweetpotato a hexaploid (2n = 6x 90), and its genome (B1B1B2B2B2B2) quite complex due to polyploidy, self-incompatibility, high heterozygosity. Here we established haploid-resolved chromosome-scale de novo assembly of autohexaploid sequences. Before constructing genome, created sequences in I. trifida using highly homozygous accession, Mx23Hm, with PacBio RSII...
재배지역에 따른 고구마 전분의 특성을 구명하여 고구마의 새로운 식품산업 소재로서 활용 방안을 모색하기 위한 기초자료로 이용하고자 실험한 결과는 다음과 같다. 재배기간의 평균온도는 <TEX>$16.7-28.2^{\circ}C$</TEX>, 강수량은 882(무안)-1,682 mm(함양)로 함양지역의 강수량이 많았으며, 일조시간은 702.4(익산)-793.5 시간(무안)으로 무안지역이 많았다. 지역별 시험구의 토성은 무안, 익산, 보령지역은 사양토, 논산지역은 사질식양토, 함양지역은 양토였으며 pH는 5.5-6.2 범위였다. 전분 함량은 29.4-59.20%, 아밀로스 22.3-30.9%의 범위를 보였고 무안지역이, 익산지역에서 높았다. 수분함량은 9.80-15.60%, 단백질 0.02-0.07%, 조지방 0.05-0.28%, 회분 0.10-0.30%의 범위였고 익산지역이 호화개시온도는 높고 함양지역이 낮았으며 최고, 최저, 최종점도, breakdown, setback은 낮았다....
Fusarium species are important post-harvest pathogens of sweet potato worldwide. A root rot disease was observed on (Ipomoea batatas) at storage houses in different locations South Korea during 2016–2017. The characterized by circular lesions with dark and light brown concentric rings along cavities the inner part root. Seven isolates were recovered from diseased samples. Two representative cultured dextrose agar morphology studied. Macroconidia cylindrical slightly curved blunt rounded...
The objective of this study was to investigate the structural and physicochemical properties starch from seven sweet potato cultivars (Shinyulmi, Sinjami, Hogammi, Jeonmi, Jinyulmi, Juhwangmi, Pungwonmi). Jeonmi Jinyulmi had amylose contents 40.04% 37.39%, respectively, whereas Juhwangmi Pungwonmihad 30.95% 32.37%, respectively. As a result amylopectin polymerization, were found have high (>48%) degree polymerization (DP) 13∼24 fraction, DP≥37 fraction content <3.45%. level resistant highest...
Fusarium wilt and surface rot caused by oxysporum Schltdl are the major diseases of sweetpotato (Ipomoea batatas) was surveyed in different locations (Cheongju, Heanam, Iksan, Icheon, Kimje, Nonsan, Yeoungam, Yeoju) Korea from 2015 to 2017 field, after harvesting storehouse. The incidence early stage represented 17.9%, 5.9%, 8.3% 2015, 2016, 2017, respectively. Samples were collected, causal organism isolated on potato dextrose agar (PDA). Ten pure cultures stored at Sweetpotato Research...
A nationwide survey was performed to investigate the current incidence of viral diseases in Korean sweet potatoes for germplasm and growing fields from 2011 2014. total 83.8% Korea infected with viruses 2011. Commercial cultivars that were used supply at a rate 62.1% 2012. Among surveyed viruses, five Potyvirus species infect potato decreased between 2012 2013, then increased again Representatively, Sweet feathery mottle virus (SPFMV) 87.0% 2012, 20.7% 2013 35.3% Unlike RNA DNA shown...
Sweetpotatoes require a storage period for year-round use and improved sweetness by starch degradation. However, long-term can cause root rot, large amount of sweetpotatoes be discarded. Root rot is typically caused pathogenic soil-borne Fusarium spp., the development induced characteristics cultivating soil in stored sweetpotato has not yet been identified. In this study, effect spp. microbial community cultivated on was to elucidated. Wounded were treated cultures inoculated with F. solani...
The flesh color of sweet potatoes varies based on the antioxidant pigments in cultivar. In this study, characteristics various potato cultivars (Jinyulmi, Juhwangmi, Pungwonmi, and Sinjami) were investigated. polyphenol contents highest purple-fleshed cultivar, Sinjami (39, 68, 71㎍ gallic acid equivalent/g distilled water, fermented ethanol, ethanol extracts, respectively). cultivar contained 29 mg/100 g anthocyanin, which is major component resulting increased concentrations polyphenols....
Hyeong-Un Lee1*, Mi-Nam Chung2, Joon-Seol Lee1, Yeon-Sang Song3, Seon-Kyeong Han1, Jae-Myung Kim1,Seung-Hyun Ahn2, Sang-Sik Nam1, Hag-Sin Kim2, Sae-Jung Suh4, and Kwang-Geun Park5. Korean J. Breed. Sci. 2015;47:324-9. https://doi.org/10.9787/KJBS.2015.47.3.324