检索结果-南通市图书馆

EurbeST——商业养蜂条件下的抗螨蜂种选育

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国蜂业 2024年第2期75卷 22-23页

作者： R.buechler A.Uzunov C.Costa M.Meixner Y le Conte F.Mondet M.Kovacic S.Andonov N.L.Carreck L.Dimitrov b.basso M.bienkowska R.dall’Olio F.Hatjina U.Wirtz 陈超(文\图) 单金琼(文\图) 不详

上期我们讲了抗螨蜜蜂的选育以及取得的成效,本期我们继续讨论选育抗螨蜜蜂过程中遇到的问题及建议。一、种蜂王的用户调查对目前蜂王市场的调查显示,客户的期望值很高,但满意度一般。欧洲养蜂人希望买到高品质的蜂王,其中最重要的是抗... 详细信息

上期我们讲了抗螨蜜蜂的选育以及取得的成效,本期我们继续讨论选育抗螨蜜蜂过程中遇到的问题及建议。一、种蜂王的用户调查对目前蜂王市场的调查显示,客户的期望值很高,但满意度一般。欧洲养蜂人希望买到高品质的蜂王,其中最重要的是抗病和高产。但是,他们对抗病性的满意度最低(图1)。近50%的用户认为选择育种是实现免用药养蜂的重要甚至唯一的手段。具有悠久育种传统的国家的用户对选择育种的认可率更高。

关键词：选择育种用户调查蜂王问题及建议抗螨养蜂人蜜蜂商业养蜂

维普期刊数据库博看期刊

Enhanced Photoprotection by Protein-bound vs Free Xanthophyll Pools： A Comparative Analysis of Chlorophyll b and Xanthophyll biosynthesis Mutants

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2010年第3期3卷 576-593页

作者： Luca dall'Osto Stefano Cazzaniga Michel Havaux Roberto bassi Dipartimento di biotecnologie Universita di Verona Strada Le Grazie 15 37134 Verona Italy CEA IBEB SBVME Laboratoire d'Ecophysiologie Moldculaire des Plantes 13108 Saint-Paul-lez-Durance France CNRS UMR Biologie Vegetale et Microbiologie Environnementales 13108 Saint-Paul-lez-Durance France Universite Aix-Marseille 13108 Saint-Paul-lez-Durance France

When light absorbed by plants exceeds the capacity of photosynthesis, the xanthophyll violaxanthin is reversibly de-epoxidized to zeaxanthin in the so-called xanthophyll cycle. Zeaxanthin plays a key role in the protection of photosynthetic organisms against excess light, by promoting rapidly reversible （qE） and long-term （ql） quenching of excited chlorophylls, and preventing lipid oxidation. The photoprotective role of zeaxanthin, either free or bound to light-harvesting complexes （Lhcs）, has been investigated by using mutants lacking Chl b （chl） and/or specific xanthophyll species （npq, lut2）. The chl mutation causes （1） the absence of Lhcb proteins; （2） strong reduction of the feedback deexcitation （qE）; and （3） accumulation of xanthophylls as free pigments into thylakoids. Chl mutants showed extreme sensitivity to photo-oxidative stress in high light, due to higher singlet oxygen （102） release. The double mutant chlnpql was more sensitive to photo-oxidation than chl, showing that zeaxanthin does protect lipids even when free in the membrane. Nevertheless, lack of zeaxanthin had a much stronger impact on the level of lipid peroxidation in Lhcs-containing plants （WTvs npql） with respect to Lhc-less plants （chl vs chlnpql）, implying that its protective effect is enhanced by interaction with antenna proteins. It is proposed that the antioxidant capacity of zeaxanthin is empowered in the presence of PSII- LHCs-Zea complexes, while its effect on enhancement of qE only provides a minor contribution. Comparison of the sensitivity of WT vs npql plants to exogenous 102 suggests that besides the scavenging of 102, at least one additional mechanism is involved in chloroplast photoprotection.

关键词： Zeaxanthin singlet oxygen photoprotection chloroplast light-harvesting complexes.

EurbeST——在商业养蜂条件下测试抗螨蜜蜂的中试研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国蜂业 2024年第1期75卷 29-30页

作者： R.buechler(文/图) A.Uzunov(文/图) C.Costa(文/图) M.Meixner(文/图) Y.le Conte(文/图) F.Mondet(文/图) M.Kovacic(文/图) S.Andonov(文/图) N.L.Carreck(文/图) L.Dimitrov(文/图) b.basso(文/图) M.bienkowska(文/图) R.dall’(文/图) Olio F.Hatjina(文/图) U.Wirtz(文/图) 陈超(文/图) 不详

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一... 详细信息

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一些蜂病的流行,给蜂群带来了巨大的压力。这其中包括寄生性的大蜂螨(Varroa destructor),如果不采取治疗措施,大多数蜂群在感染后一年内死亡。

关键词：农业生态系统大蜂螨寄生性蜂病蜂产品商业养蜂蜜蜂官方报告

Supramolecular assembly of chloroplast NADH dehydrogenase-like complex with photosystem Ⅰfrom Arabidopsis thaliana

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2022年第3期15卷 454-467页

作者： Xiaodong Su Duanfang Cao Xiaowei Pan Lifang Shi Zhenfeng Liu Luca dall’Osto Roberto bassi Xinzheng Zhang Mei Li National Laboratory of biomacromolecules CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China College of Life Science Capital Normal UniversityBeijing 100101P.R.China Dipartimento di biotecnologie Universitàdi Verona37134 VeronaItaly Center for biological Imaging CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101P.R.China

Cyclic electron transport/flow(CET/CEF)in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency.A crucial CEF pathway is catalyzed by a membrane-embedded NADH dehydrogenase-like(NDH)complex that contains at least 29 protein subunits and associates with photosystem I(PSI)to form the NDH-PSI ***,we report the 3.9Åresolution structure of the Arabidopsis thaliana NDH-PSI(AtNDH-PSI)*** constructed structural models for 26 AtNDH subunits,among which 11 are unique to chloroplasts and stabilize the core part of the NDH *** the supercomplex,one NDH can bind up to two PSI-light-harvesting complex I(PSI-LHCI)complexes at both sides of its membrane *** minor LHCIs,Lhca5 and Lhca6,each present in one PSI-LHCI,interact with NDH and contribute to supercomplex formation and ***,our study reveals the structural details of the AtNDH-PSI supercomplex assembly and provides a molecular basis for further investigation of the regulatory mechanism of CEF in plants.

关键词： cyclic electron transport/flow NADH dehydrogenase-like(NDH)complex photosystem I structure Arabidopsis thaliana

SUMOylation regulates p27^(Kip1) stability and localization in response to TGFβ

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

分子细胞生物学报:英文版 2016年第1期8卷 17-30页

作者： Sara Lovisa Simona Citro Maura Sonego Alessandra dall’Acqua Valentina Ranzuglia Stefania berton Alfonso Colombatti barbara belletti Susanna Chiocca Monica Schiappacassi Gustavo baldassarre Division of Experimental Oncology 2 Centro di Riferimento Oncologico National Cancer InstituteAviano 33081Italy Department of Experimental Oncology European Institute of Oncology at the IFOM-IEO CampusMilan 20139Italy Department of Scienze e Tecnologie biomediche MATI Center of ExcellenceUniversity of UdineUdine 33010Italy Present address:Department of Cancer biology Metastasis Research CenterThe University of Texas MD Anderson Cancer CenterHoustonTX 77030USA.

Exposure of normal and tumor-derived cells to TGFbresults in different outcomes,depending on the regulation of key *** CDK inhibitor p27^(Kip1) is one of these TGFβ targets and is essential for the TGFβ-induced cell cycle *** treatment inhibits p27^(Kip1) degradation and induces its nuclear translocation,through mechanisms that are still *** evidences suggest that SUMOylation,a post-translational modification able to modulate the stability and subcellular localization of target proteins,critically modifies members of the TGFβ signaling ***,we demonstrate that p27^(Kip1) is SUMOylated in response to TGFβ *** different p27^(Kip1) point mutants,we identified lysine 134(K134)as the residue modified by small ubiquitin-like modifier 1(SUMO1)in response to TGFb ***β-induced K134 SUMOylation increased protein stability and nuclear localization of both endogenous and exogenously expressed p27^(Kip1).We observed thatSUMOylation regulated p27^(Kip1) binding to CDK2,thereby governing its nuclear proteasomal degradation through the phosphorylation of threonine ***,p27^(Kip1) SUMOylation was necessary for proper cell cycle exit following *** data indicate thatSUMOylation is a novel regulatory mechanism that modulates p27^(Kip1) function in response to TGFβ *** the involvement of TGFb signaling in cancer cell proliferation and invasion,our data may shed light on an important aspect of this pathway during tumor progression.

关键词： p^(27kip1) SUMOylation TGFβ

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

探索来自外星的信息

世界科学 1989年第1期 10-11页

作者： Joyce dall’Acqua 王乃粒

当斯克普·施瓦尔茨(Skip Schwartz)在办公室收集他的信息时,他总希望能有这样的发现:“被呼唤的Vb8b星座将以1420兆赫的频率,每隔30秒钟发回一次信号。施瓦尔茨是设在马萨诸塞州,哈佛大学的橡树岭天文台的野外观测站的负责人,该天文台... 详细信息

当斯克普·施瓦尔茨(Skip Schwartz)在办公室收集他的信息时,他总希望能有这样的发现:“被呼唤的Vb8b星座将以1420兆赫的频率,每隔30秒钟发回一次信号。施瓦尔茨是设在马萨诸塞州,哈佛大学的橡树岭天文台的野外观测站的负责人,该天文台归史密斯索尼安天文物理观测台领导。自1984年起,设在橡树岭的一台直径为84呎的射电望远镜一直对天空进行观测,以探索来自银河系中的智慧生命的信息。“我们每天都检查计算机的打印输出,以寻找自天空中的某一固定点接收到的信号强度的明

关键词：人类宇宙智慧生命地球行星射电望远镜天文望远镜

Loss of CDKN1b induces an age-related clonal hematopoietic disorder via Notch2 activity dysregulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Cancer Communications 2023年第7期43卷 844-849页

作者： Ilenia Segatto Gian Luca Rampioni Vinciguerra Ilenia Pellarin Alessandra dall’Acqua Stefania berton Francesca Citron Sara D’Andrea Giorgia Mungo Davide Viotto Lorena Musco Arianna Di Napoli Maria Antonietta Aloe Spiriti Vincenzo Canzonieri Valter Gattei Andrea Vecchione barbara belletti Gustavo baldassarre Division of Molecular Oncology Centro di Riferimento Oncologico di Aviano(CRO)Istituto di Ricovero e Cura a Carattere Scientifico(IRCCS)National Cancer InstituteAviano(PN)Italy Department of Clinical and Molecular Medicine University of Rome“La Sapienza”Santo Andrea HospitalRomeItaly Division of Pathology Centro di Riferimento Oncologico di Aviano(CRO)Istituto di Ricovero e Cura a Carattere Scientifico(IRCCS)National Cancer InstituteAviano(PN)Italy Division of Clinical and Experimental Onco-Hematology Centro di Riferimento Oncologico di Aviano(CRO)Istituto di Ricovero e Cura a Carattere Scientifico(IRCCS)National Cancer InstituteAviano(PN)Italy

Dear Editor,The tumor suppressor gene CDKN1b,encoding for the p27^(Kip1)(p27)protein,defines the smallest region of deletion on chromosome 12p13 described in clonal hematopoietic disorders(CHDs)[1].Among them,myelodysplastic syndromes(MDSs)display typical onset in the elderly and an indolent behavior that may evolve in acute myeloid leukemia(AML)[2].Recent evidences support a model of parallel clonal evolution at the stem or progenitor cell level and implicate the need of more preclinical,translational and clinical research to identify better ways to timely target clones that may evolve toward malignancy[3,4].

关键词： hematopoietic clinical acute

意大利大白猪窝产仔数候选基因的遗传结构分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国畜牧兽医 2010年第6期37卷 20-20页

作者： dall’ olio S 晋大鹏

试验旨在研究意大利大白猪(ITLW)窝产仔数候选基因的多态性。试验选取6个农场120头经产母猪,对10个基因的10个SNPs进行了基因分型,在其他猪中这10个基因的多态性与窝产仔数性状间具有相关性,是功能和/或染色体定位的候选基因。结果表明... 详细信息

试验旨在研究意大利大白猪(ITLW)窝产仔数候选基因的多态性。试验选取6个农场120头经产母猪,对10个基因的10个SNPs进行了基因分型,在其他猪中这10个基因的多态性与窝产仔数性状间具有相关性,是功能和/或染色体定位的候选基因。结果表明,10个SNPs中的CLGN、pDAZL和RFN4没有发现基因分型,剩余具有多态性的7个标记的小等位基因频率在0.10(AFP)～0.48(RbP4)之间。由于所选位点中存在基因多态性,因此,AFP、bMPR1b、CXCL10、ESR2、GNRHR、MAN2b2、RbP4可作为候选基因用于意大利大白猪窝产仔数性状的相关性研究。

关键词：意大利大白猪候选基因 SNPs 多态性

维普期刊数据库

儿童期因素及种族间差异对成年后脉搏波传导速度的影响

在线全文

学校读者我要写书评

暂无评论

中华高血压杂志 2016年第6期24卷 574-574页

作者：刘莉叶鹏 Cruickshank JK Silva MJ Molaodi OR Enayat ZE Cassidy A Karamanos A Read UM Faconti L dall P Stansfield b Harding S

目前对于脉搏波传导速度（主动脉僵硬度评估指标）的早期决定因素知之甚少。该研究探索多种族队列研究中童年时期曾测量2次的指标,尤其是体质量指数、血压和客观评估的体力活动对成年后主动脉僵硬度的作用。

关键词：脉搏波传导速度动脉僵硬度体力活动童期队列研究体质量动脉造影客观评估亚组设备检测

维普期刊数据库