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Development of a Core Set from a Large Rice Collection using a Modified Heuristic Algorithm to Retain Maximum Diversity

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Journal of Integrative Plant Biology 2009年第12期51卷 1116-1125页

作者： Hun-Ki Chung Kyu-Won Kim Jong-Wook Chung Jung-Ro Lee Sok-Young Lee Anupam Dixit Hee-Kyoung Kang Weiguo Zhao Kenneth L. McNally Ruraidh S. Hamilton jae-gyun gwag Yong-Jin Park National Agrobiodiversity Center National Academy of Agricultural Science Suwon 441-707 Korea Department of Plant Resources College of Industrial Sciences Kongju National University Yesan 340-802 Korea Rice DNA and Quality Testing Laboratory Basmati Export Development Foundation SVBP University of Agriculture and Technology Meerut 250110 India Department of Horticultural Science College of Industrial Science Kongju National University Yesan 340-802 Korea jiangsu University of Science and Technology Seficultural Research Institute Chinese Academy of Agricultural Sciences Zhenjiang 212018 China Genetic Resources Center International Rice Research Institute Metro Manila 1301 Philippines

A new heuristic approach was undertaken for the establishment of a core set for the diversity research of rice. As a result, 107 entries were selected from the 10 368 characterized accessions. The core set derived using this new approach provided a good representation of the characterized accessions present in the entire collection. No significant differences for the mean, range, standard deviation and coefficient of variation of each trait were observed between the core and existing collections. We also compared the diversity of core sets established using this Heuristic Core Collection （HCC） approach with those of core sets established using the conventional clustering methods. This modified heuristic algorithm can also be used to select genotype data with allelic richness and reduced redundancy, and to facilitate management and use of large collections of plant genetic resources in a more efficient way.

关键词： core collection genetic diversity heuristic core collection Oryza sativa sampling strategy.

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Mass evaluation of resistance to soft rot in lettuce(Lactuca sativa L.)germplasm

Mass evaluation of resistance to soft rot in lettuce(Lactuca...

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2014年中国作物学会学术年会

作者： Jung-Ro Lee Gyu-Taek Cho Sang Gyu Kim Ho-Cheol Ko Hong-jae Park jae-gyun gwag National Agrobiodiversity Center of National Academy of Agricultural Science Rural Development Administration

Soft rot caused by Pectobacterium carotovorum *** is a destructive disease of the fleshy storage tissues of vegetables and ornamentals that occurs *** investigated an effective method for evaluating soft rot disease on a massive scale in the germplasm of lettuce grown under similar conditions in the *** also evaluated resistance to soft rot using this method for 812 accessions of lettuce germplasm introduced from 52 *** this investigation,lettuce leaves were sprayed with 5 mL of 10CFU/mL of *** *** per plant was the most effective to evaluate soft rot *** overall average degree of resistance of 812 accessions to *** *** was 6.8 ±0.1,and 21 accessions showed very high *** from Afghanistan,Israel,and Pakistan showed high resistance and Israeli accessions showed the highest resistance among the three *** 21 accessions that showed very high resistance,12 were landraces,six were cultivars,and three were wild ***,12 of these accessions were leaf lettuce,five were romaine,three were wild relatives,and one was *** lettuce showed the highest average level of resistance while crisphead lettuce had the lowest average resistance among the cultivated lettuce *** relatives had greater resistance than landraces and cultivars.

关键词： lettuce germplasm evaluation resistance soft rot

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Assessment of Sesquiterpene Lactones in Lettuce(Lactuca sativa L.)Germplasm

Assessment of Sesquiterpene Lactones in Lettuce(Lactuca sati...

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2014年中国作物学会学术年会

作者： Jeong-Ro Lee Susanna-Choi Na-Young Ro Ho-Cheol Ko Jeong-Suk Sung Taek-Ryun Kown Young-Yi Lee jae-gyun gwag National Agrobiodiversity Center National Academy of Agricultural ScienceRural Development Administration

Sesquiterpene lactones(SLs) are a group of over 500 compounds,characteristic of the Asteraceae and sporadically occurring in other plant *** are interesting from the chemical and chemotaxonomic point of view,and show anti-tumour,anti-leukaemic,anti-cardiovascular disease,reduction of inflammation,anti-microbial *** have been indicated as a property connected to appetite and digestion promotion in *** of folk medicines also implicate SLs as the active ingredient in many treatments for other ailments such as diarrhea,burns,influenza,and *** of 266 accessions of lettuce(Lactuca sativa) germplasm introduced from 43 countries conserved in RDA genebank was used this *** was extracted by methanol from freeze-dried lettuce leaves,sampled at bolting *** SLs compounds,lactucin,lactucopicrin and 8-deoxylactucin,was quantified by *** range of lactucin content showed trace 120.0 μg/g of dried leaves and average was 19.0±1.3,and distribution range trace 488.1 μg and average 16.8±2.9 in 8-deoxylactucin content,and distribution range trace1,189.0 μg and average 195.2±9.9 in lactucopicrin content,and distribution range17.4,299.9 μg and average 231.0±11.4 in total SLs *** lettuce have lowest average total SLs content,on the contrary romaine have highest SLs content and ***,wild relatives,have higher than *** accessions have lowest average total SLs content and Great Britain accessions showed highest SLs *** showed higher than bred *** two accessions have more than500μg of total SLs and seventeen accessions have less than 50μg of total *** germplasm can be used as low SLs content cultivar breeding or high SLs content cultivar breeding sources as well as research materials for medical treatment such as,anti-tumour,anti-leukaemic,and antimicrobial activities,etc.

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Tungsten-based nanocatalysts with different structures for visible light responsive photocatalytic degradation of bisphenol A

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Journal of Environmental Sciences 2024年第5期139卷 569-588页

作者： Hai Bang Truong Thi Thu Loan Doan Nguyen Tien Hoang Nguyen Van Tam Minh Kim Nguyen Le Gia Trung Jin Seog gwag Nguyen Tien Tran Optical Materials Research Group Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology School of TechnologyVan Lang UniversityHo Chi Minh CityViet Nam The University of Da Nang University of Science and Technology54 Nguyen Luong BangDa NangViet Nam The University of Da Nang University of Science and Education459 Ton Duc Thang St.Lien ChieuDa Nang 550000Viet Nam Institute of Veterinary Science and Technology 31ha zoneTrau QuyGia LamHa Noi 12400Viet Nam Department of Physics Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea Center for Advanced Chemistry Institute of Research and DevelopmentDuy Tan University03 Quang TrungDa Nang 550000Viet Nam Faculty of Natural Sciences Duy Tan University03 Quang TrungDa Nang 550000Viet Nam

Environmental pollution,such as water contamination,is a critical issue that must be absolutely ***,three different morphologies of tungsten-based photocatalysts(WO_(3)nanorods,WO_(3)/WS_(2)nanobricks,WO_(3)/WS_(2)nanorods)are made using a simple hydrothermal method by changing the solvents(H_(2)O,DMF,aqueous HCl solution).The as-prepared nanocatalysts have excellent thermal stability,large porosity,and high *** results show all materials have good photocatalytic activity in aqueous media,with WO_(3)/WS_(2)nanorods(NRs)having the best activity in the photodegradation of bisphenol A(BPA)under visible-light *** may originate from increased migration of charge carriers and effective prevention of electron–hole recombination in WO_(3)/WS_(2)NRs,whereby this photocatalyst is able to generate more reactive·OH and·O_(2)^(–)species,leading to greater photocatalytic *** 99.6% of BPA is photodegraded within 60 min when using 1.5 g/L WO_(3)/WS_(2)NRs and 5.0 mg/L BPA at pH ***,the optimal conditions(pH,catalyst dosage,initial BPA concentration)for WO_(3)/WS_(2)NRs are also elaborately *** rod-like heterostructures are expressed as potential catalysts with excellent photostability,efficient reusability,and highly active effectivity in different types of *** particular,the removal efficiency of BPA by WO_(3)/WS_(2)NRs reduces by only 1.5% after five recycling runs and even reaches 89.1%in contaminated lake *** study provides promising insights for the nearly complete removal of BPA from wastewater or different water resources,which is advantageous to various applications in environmental remediation.

关键词： Photodegradation Bisphenol A Tungsten-based nanocatalyst Structure Nanorod

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Differential Neutrophil Infiltration Contributes to Regional Differences in Brain Infiammation in the Substantia Nigra Pars Compacta and Cortex

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神经损伤与功能重建 2008年第4期3卷 265-273页

作者： KYUNG-AE JI MI YOUNG EU SEUNG-HEE KANG BYOUNG JOO gwag ILO JOU EUN-HYE JOE Neuroscience Graduate Program Ajou University School of MedicineSuwon Department of Radiation Oncology Ajou University School of MedicineSuwon Department of Pharmacology Ajou University School of MedicineSuwon

脑的炎症反应是神经退行性疾病的危险因素之一。有趣的是,黑质密部(SNpc)严重的炎性反应会加速帕金森病的发作和进展。本研究通过比较SNpc与皮质的炎性过程来检测SNpc严重炎性反应的潜在机制。在完整的脑组织中,SNpc和皮质的CD11b+小胶... 详细信息

脑的炎症反应是神经退行性疾病的危险因素之一。有趣的是,黑质密部(SNpc)严重的炎性反应会加速帕金森病的发作和进展。本研究通过比较SNpc与皮质的炎性过程来检测SNpc严重炎性反应的潜在机制。在完整的脑组织中,SNpc和皮质的CD11b+小胶质细胞密度是相似的。但是,脂多糖注射可增加SNpc的CD11b+细胞数目,而不能增加皮质中的。以前作者曾报道内毒素注射之后,黑质密部有CD11b和MPO双阳性的中性粒细胞浸润(GLIA55:1577-1588)。值得注意的是,MPO+中性粒细胞数量在SNpc中显著增加,而在皮质中只有轻微提高。中性粒细胞浸润的范围与神经元损伤相关。作者证实,内毒素注射后,中性粒细胞减少大鼠的SNpc中的神经元丢失较正常大鼠显著减少。此外,完整的SNpc中的星形胶质细胞密度明显低于皮质。而且,内毒素注射后,SNpc的内皮细胞和星形胶质细胞的损害以及血脑屏障的通透性均有显著变化。这些结果都提示,过度的中性粒细胞浸润和环境因子,例如低星形胶质细胞浓度和高血脑屏障通透性,会导致SNpc的重度炎症和神经元死亡。

关键词：中性粒细胞脑炎症区域差异

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