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Rice pollen-specific OsRALF17 and OsRALF19 are essential for pollen tube growth

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Journal of Integrative Plant Biology 2023年第9期65卷 2218-2236页

作者： Eui‐Jung Kim Ji‐Hyun Kim Woo‐jong Hong Eun Young Kim Myung‐Hee Kim Su Kyoung Lee Cheol Woo Min sun Tae Kim Soon Ki Park Ki‐Hong Jung Yu‐Jin Kim Graduate School of Green Bio‐Science&Crop Biotech Institute Kyung Hee UniversityYongin 17104Republic of Korea Department of Life Science and Environmental Biochemistry Life and Industry Convergence Research InstitutePusan National UniversityMiryang 50463Republic of Korea Department of Smart Farm Science Kyung Hee UniversityYongin 17104Republic of Korea School of Applied Biosciences Kyungpook National UniversityDaegu 41566Republic of Korea Genomics Division Department of Agricultural Bio‐ResourcesNational Institute of Agricultural SciencesRural Development AdministrationJeonju 54874Republic of Korea Department of Plant Bioscience Pusan National UniversityMiryang 50463Republic of Korea Research Center for Plant Plasticity Seoul National UniversitySeoul 08826Republic of Korea

Pollen tube growth is essential for successful double fertilization, which is critical for grain yield in crop plants. Rapid alkalinization factors(RALFs) function as ligands for signal transduction during fertilization. However, functional studies on RALF in monocot plants are ***, we functionally characterized two pollen-specific RALFs in rice(Oryza sativa) using multiple clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein 9-induced loss-of-function mutants,peptide treatment, expression analyses, and tag reporter lines. Among the 41 RALF members in rice, OsRALF17 was specifically expressed at the highest level in pollen and pollen *** applied OsRALF17 or OsRALF19peptide inhibited pollen tube germination and elongation at high concentrations but enhanced tube elongation at low concentrations, indicating growth regulation. Double mutants of OsRALF17 and OsRALF19(ralf17/19) exhibited almost full male sterility with defects in pollen hydration, germination, and tube elongation,which was partially recovered by exogenous treatment with OsRALF17 peptide. This study revealed that two partially functionally redundant OsRALF17 and OsRALF19 bind to Oryza sativa male-gene transfer defective 2(OsMTD2) and transmit reactive oxygen species signals for pollen tube germination and integrity maintenance in rice. Transcriptomic analysis confirmed their common downstream genes, in osmtd2 and ralf17/19. This study provides new insights into the role of RALF, expanding our knowledge of the biological role of RALF in regulating rice fertilization.

关键词： CRISPR-Cas9 CrRLK1L monocot Oryza sativa pollen tube growth rapid alkalinization factor(RALF)

厌氧-好氧移动床生物膜反应器串联处理垃圾渗滤液

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环境科学 2006年第10期27卷 2076-2080页

作者：陈胜孙德智陈桂霞 jong Shik Chung 哈尔滨工业大学市政环境工程学院哈尔滨150090

采用厌氧-好氧移动床生物膜反应器串联处理城市垃圾渗滤液．探讨了各种操作条件对垃圾渗滤液生物降解效率的影响，并对其影响机理作了分析．结果表明，水力停留时间和有机容积负荷对系统的处理效率影响较大，当系统进水的COD容积负荷在4... 详细信息

采用厌氧-好氧移动床生物膜反应器串联处理城市垃圾渗滤液．探讨了各种操作条件对垃圾渗滤液生物降解效率的影响，并对其影响机理作了分析．结果表明，水力停留时间和有机容积负荷对系统的处理效率影响较大，当系统进水的COD容积负荷在4．01～7．87kg／（m3·d）范围内，系统COD平均总去除率为94．2％，其中厌氧反应器对COD的去除率占总去除率的87．95％～92．76％；当系统进水的容积负荷高达10．23～16．14kg／（m^3·d）时，系统总COD平均去除率仍高达92．64％，其中厌氧反应器对COD的去除率占总去除率的79．05％～86．56％．当好氧段HRT大于1．25d，系统对氨氮的总去除率始终在97％以上．当HRT=0．75d时，系统对氨氮的总去除率仅在20％左右．该系统具有很强的抗冲击负荷能力，即使在24h内受到超过正常运行负荷4倍的冲击时，系统经过约3d可恢复正常．

关键词：移动床生物膜反应器垃圾渗滤液有机负荷冲击负荷

Fenton工艺深度处理垃圾渗滤液中难降解有机物

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哈尔滨工业大学学报 2007年第8期39卷 1285-1288页

作者：赵冰清陈胜孙德智 jong Shik Chung 哈尔滨工业大学市政环境工程学院哈尔滨150090 Department of Chemical Engineering Pohang University of Science and TechnologyKorea

选用Fenton工艺对经过生化处理后的城市垃圾渗滤液进行深度处理.结果表明,该工艺具有氧化和混凝的双重作用,其最优工艺条件为:[H2O2]=38.8 mmol/L、[Fe2+]=30 mmol/L、初始pH为3、混凝pH为8,反应时间60 min,H2O2为一次投加.在此条件下,... 详细信息

选用Fenton工艺对经过生化处理后的城市垃圾渗滤液进行深度处理.结果表明,该工艺具有氧化和混凝的双重作用,其最优工艺条件为:[H2O2]=38.8 mmol/L、[Fe2+]=30 mmol/L、初始pH为3、混凝pH为8,反应时间60 min,H2O2为一次投加.在此条件下,COD和TOC的去除率分别达63.43%和80.58%.同时分析了各种影响因子对Fenton试剂处理效果的作用机理.

关键词： Fenton工艺垃圾渗滤液难降解有机物

Risk factors for hepatocellular carcinoma in patients with drug-resistant chronic hepatitis B

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World Journal of Gastroenterology 2013年第40期19卷 6834-6841页

作者： Chung Hwan Jun Hyoung Ju Hong Min Woo Chung Seon Young Park sung Bum Cho Chang Hwan Park Young Eun Joo Hyun Soo Kim sung Kyu Choi jong sun Rew Department of Internal Medicine Chonnam National University Medical SchoolGwangju 501-757South Korea

AIM:To investigate the risk factors and characteristics of hepatocellular carcinoma(HCC) in the patients with drug-resistant chronic hepatitis B(CHB).METHODS:A total of 432 patients with drug-resistant CHB were analyzed retrospectively from January 2004to December 2012. The patients were divided into two groups:the HCC group(n = 57) and the non-HCC group(n = 375). Two groups compared using logistic regression for various patients and viral characteristics in order to identify associated risk factors for ***,patient and tumor characteristics of HCC patients with na ve CHB(N group,n = 117) were compared to the HCC group(R group,n = 57) to identify any difference in HCC characteristics between ***:A significant difference was found for age,platelet count,alpha-fetoprotein(AFP),positivity of HBeAg,seroconversion rate of HBeAg,virologic response,the Child-Pugh score,presence of rtM204I,and the duration of antiviral treatment in non-HCC and HCC group. Cirrhosis,age(> 50 years),HBeAg(+),virologic non-responder status,and rtM204I mutants were independent risk factors for the development of HCC. The R group had lower serum C-reactive protein(CRP) and AFP levels,earlier stage tumors,and a shorter mean tumor surveillance period than the N group. However,the total follow-up duration was not significantly different between the two ***:13.2% of patients with drug-resistant CHB developed HCC. Age,cirrhosis,YIDD status,HBeAg status,and virologic response are associated with risk of HCC. Patients with drug-resistant CHB and these clinical factors may benefit from closer HCC surveillance.

关键词： Carcinoma Hepatocellular Hepatitis B Drug resistance Risk factors Characteristics

Lens culinaris agglutinin-reactive fraction of alpha-fetoprotein improves diagnostic accuracy for hepatocellular carcinoma

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World Journal of Gastroenterology 2021年第28期27卷 4687-4696页

作者： Han Ah Lee Yoo Ra Lee Young-sun Lee Young Kul Jung Ji Hoon Kim Hyunggin An Hyung Joon Yim Yoon Tae Jeen jong Eun Yeon Kwan Soo Byun Yeon Seok Seo Department of Internal Medicine Korea University College of MedicineSeoul 02841South Korea Department of Biostatistics Korea University Anam HospitalSeoul 02841South Korea

BACKGROUND Diagnostic accuracy of various tumor markers and their combinations for hepatocellular carcinoma(HCC)was not fully *** To evaluate the diagnostic accuracy of alpha-fetoprotein(AFP),the Lens culinaris agglutinin-reactive fraction of AFP(AFP-L3),and protein induced by vitamin K absence or antagonist-II(PIVKA-II)and their combination for HCC *** Patients with newly detected liver mass or elevated serum AFP levels were considered *** AFP level,AFP-L3 fraction,and PIVKA-II level were measured at the first *** In total,622 patients were included;355 patients(57.1%)had chronic liver disease,and 208(33.4%)had liver *** was diagnosed in 160 patients(25.7%).The area under the receiver operating characteristics curves(AUROCs)of the serum AFP,AFP-L3 fraction,AFP-L3,and PIVKA-II levels for the diagnosis of HCC were 0.775,0.792,0.814,and 0.834,respectively.A novel diagnostic model was developed by classifying patients in a 1:1 ratio into training and validation *** the binary regression analysis of the training cohort,the AFP,AFP-L3 fraction,and PIVKA-II(ALPs)score was calculated as follows:ALPs score=3.8×[serum AFP level(ng/mL)×AFP-L3 fraction(%)×0.01]+0.2×PIVKA-II level(mAU/mL).The AUROC of the ALPs score for diagnosis of HCC was 0.878,significantly higher than that of serum AFP level(P<0.001),AFP-L3 fraction(P<0.001),PIVKA-II level(P=0.036),and AFP-L3 level(P=0.006).The optimal ALPs score cut-off was 5.3(sensitivity,85.0%,specificity 80.1%).The validation cohort showed similar *** The ALPs score calculated using serum AFP level,AFP-L3 fraction,and PIVKA-II level showed improved accuracy in HCC diagnosis.

关键词： Alpha-fetoprotein Lens culinaris agglutinin-reactive fraction of alphafetoprotein Protein induced by vitamin K absence or antagonist-II Hepatocellular carcinoma

Carbon and nitrogen storage in an age-sequence of Pinus densiflora stands in Korea

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Science China(Life Sciences) 2010年第7期53卷 822-830页

作者： NOH Nam-Jin SON Yowhan LEE Sue-Kyoung SEO Kyung-Won HEO Su-Jin1 YI Myong-jong PARK Pil-sun KIM Rae-Hyun SON Yeong-Mo LEE Kyeong-Hak Division of Environmental Science and Ecological Engineering Korea University Korea Forest Research Institute Department of Forest Resources Kangwon National University Department of Forest Sciences Seoul National University

The carbon(C) and nitrogen(N) storage capabilities of Pinus densiflora in six different stand ages(10,27,30,32,44,and 71 years old) were investigated in *** sample trees were destructively harvested and 12 were *** from the above and belowground tree components,coarse woody debris(CWD),forest floor,and mineral soil(0-30 cm) were *** biomass was highest in the 71-year-old stand(202.8 t ha-1) and lowest in the 10-year-old stand(18.4 t ha-1).C and N storage in the mineral soil was higher in the 71-year-old stand than in the other stands,mainly due to higher soil C and N ***,the total ecosystem C and N storage(tree+forest floor+CWD+soil) was positively correlated with stand age:increasing from a minimum in the 10 year old stand(18.8 t C ha-1 and 1.3 t N ha-1) to a maximum in the 71-year-old stand(201.4 t C ha-1 and 8.5 t N ha-1).The total ecosystem C storage showed a similar sigmoidal pattern to that of tree C storage as a function of the age-sequence,while N storage in the CWD,forest floor and mineral soil showed no significant temporal *** results provide important insights that will increase our understanding of C and N storage in *** stands and our ability to predict changes according to stand age in the region.

关键词： age-sequence allometric equation biomass carbon nitrogen Pinus densiflora stand age

A highly annotated whole- genome sequence of a Korean individual

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A highly annotated whole- genome sequence of a Korean indivi...

SARS-CoV-2 aberrantly elevates mitochondrial bioenergetics to induce robust virus propagation

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作者： jong-Il Kim Joseph Thakuria Jeong-sun Seo Macrogen Inc. SeoulKorea Genomic Medicine Institute Medical Research CenterSeoul National UniversitySeoulKorea Department of Genetics Harvard Medical SchoolBostonMassachusettsUSA

We provide a highly annotated,whole - genome sequence for a Korean individual,known as *** genome of AK1 was determined by an exacting,combined approach that included whole - genome shotgun sequencing(27.83 coverage),targeted bacterial artificial chromosome sequencing,and high - resolution comparative genomic hybridization using custom microarrays featuring more than

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2702-2715页

作者： Hye Jin Shin Wooseong Lee Keun Bon Ku Gun Young Yoon Hyun-Woo Moon Chonsaeng Kim Mi-Hwa Kim Yoon-sun Yi Sangmi Jun Bum-Tae Kim jong-Won Oh Aleem Siddiqui Seong-Jun Kim Department of Convergent Research of Emerging Virus Infection Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea Gyeongnam Biohealth Research Center Gyeongnam Branch InstituteKorea Institute of ToxicologyJinju 52834Republic of Korea Center for Research Equipment Korea Basic Science InstituteCheongjuChungcheongbuk-do 28119Republic of Korea Department of Biotechnology Yonsei UniversitySeoul 03722Republic of Korea Division of Infectious Diseases School of MedicineUniversity of CaliforniaSan DiegoLa JollaCA 92093USA Present address:Department of Microbiology Chungnam National University School of MedicineDaejeon 35015Republic of Korea

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is a‘highly transmissible respiratory pathogen,leading to severe multiorgan ***,knowledge regarding SARS-CoV-2-induced cellular alterations is *** this study,we report that SARSCoV-2 aberrantly elevates mitochondrial bioenergetics and activates the EGFR-mediated cell survival signal cascade during the early stage of viral ***-CoV-2 causes an increase in mitochondrial transmembrane potential via the SARS-CoV-2 RNAnucleocapsid cluster,thereby abnormally promoting mitochondrial elongation and the OXPHOS process,followed by enhancing ATP ***,SARS-CoV-2 activates the EGFR signal cascade and subsequently induces mitochondrial EGFR trafficking,contributing to abnormal OXPHOS process and viral *** EGFR inhibitors remarkably reduce SARS-CoV-2 propagation,among which vandetanib exhibits the highest antiviral *** of SARS-CoV-2-infected cells with vandetanib decreases SARS-CoV-2-induced EGFR trafficking to the mitochondria and restores SARS-CoV-2-induced aberrant elevation in OXPHOS process and ATP generation,thereby resulting in the reduction of SARS-CoV-2 ***,oral administration of vandetanib to SARS-CoV-2-infected hACE2 transgenic mice reduces SARS-CoV-2 propagation in lung tissue and mitigates SARS-CoV-2-induced lung *** also exhibits potent antiviral activity against various SARS-CoV-2 variants of concern,including alpha,beta,delta and omicron,in in vitro cell culture *** together,our findings provide novel insight into SARS-CoV-2-induced alterations in mitochondrial dynamics and EGFR trafficking during the early stage of viral infection and their roles in robust SARS-CoV-2 propagation,suggesting that EGFR is an attractive host target for combating COVID-19.

关键词： alterations aberrant thereby

Critical factors to inhibit water-splitting side reaction in carbon-based electrode materials for zinc metal anodes

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Carbon Energy 2022年第6期4卷 1080-1092页

作者： Dong Hyuk Kang Eunji Lee Beom Sik Youn Son Ha jong Chan Hyun Juhee Yoon Dawon Jang Kyoung sun Kim Hyungsub Kim Sang Moon Lee sungho Lee Hyoung-Joon Jin Hyung-Kyu Lim Young Soo Yun KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSeongbuk-guSouth Korea Division of Chemical Engineering and Bioengineering Kangwon National UniversityChuncheonGangwon-doSouth Korea Department of Eco-Polymer Science and Engineering Inha UniversityIncheonMichuhol-guSouth Korea Carbon Composite Materials Research Center Institute of Advanced Composite MaterialsKorea Institute of Science and Technology(KIST)Jeollabuk-doSouth Korea Department of Chemical and Biological Engineering Korea UniversitySeoulSeongbuk-guSouth Korea Neutron Science Division Korea Atomic Energy Research Institute(KAERI)DaejeonYuseong-guSouth Korea Research Center for Materials Analysis Korea Basic Science Institute(KBSI)DaejeonYuseong-guSouth Korea Department of Integrative Energy Engineering Korea UniversitySeoulSeongbuk-guSouth Korea

Zinc metal anodes(ZMA)have high theoretical capacities(820 mAh g−1 and 5855 mAh cm−3)and redox potential(−0.76 V *** hydrogen electrode),similar to the electrochemical voltage window of the hydrogen evolution reaction(HER)in a mild acidic electrolyte system,facilitating aqueous zinc batteries competitive in next-generation energy storage ***,the HER and byproduct formation effectuated by water-splitting deteriorate the electrochemical performance of ZMA,limiting their *** this study,a key factor in promoting the HER in carbon-based electrode materials(CEMs),which can provide a larger active surface area and guide uniform zinc metal deposition,was investigated using a series of threedimensional structured templating carbon electrodes(3D-TCEs)with different local graphitic orderings,pore structures,and surface *** ultramicropores of CEMs are the determining critical factors in initiating HER and clogging active surfaces by Zn(OH)2 byproduct formation,through a systematic comparative study based on the 3D-TCE series *** the 3D-TCEs had a proper graphitic structure with few ultramicropores,they showed highly stable cycling performances over 2000 cycles with average Coulombic efficiencies of≥99%.These results suggest that a well-designed CEM can lead to high-performance ZMA in aqueous zinc batteries.

关键词： aqueous batteries carbon electrode hydrogen evolution reaction multivalent ion zinc metal anode