LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 358

Search options

  1. Article ; Online: Organocatalytic enantioselective decarboxylative protonation of α-alkyl-α-aryl malonate monoesters.

    Guo, Cong-Ying / Chen, Jia-Zheng / Liu, Wen-Ting / Mei, Hao / Meng, Jie / Chen, Jian-Ping

    Chemical communications (Cambridge, England)

    2024  Volume 60, Issue 28, Page(s) 3854–3857

    Abstract: In contrast to the well-established enzymatic enantioselective decarboxylative protonation (EDP), the corresponding chemocatalytic reactions of acyclic malonic acid derivatives remain challenging. Herein, we developed a biomimetic EDP of α-alkyl-α-aryl ... ...

    Abstract In contrast to the well-established enzymatic enantioselective decarboxylative protonation (EDP), the corresponding chemocatalytic reactions of acyclic malonic acid derivatives remain challenging. Herein, we developed a biomimetic EDP of α-alkyl-α-aryl malonate monoesters using a chiral 1,2-
    Language English
    Publishing date 2024-04-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d3cc06018g
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article: Diversity and Dynamics of Bacterial Communities in the Digestive and Excretory Systems across the Life Cycle of Leafhopper,

    Huang, Qiuyan / Shan, Hong-Wei / Chen, Jian-Ping / Wu, Wei

    Insects

    2023  Volume 14, Issue 6

    Abstract: ... Recilia ... ...

    Abstract Recilia dorsalis
    Language English
    Publishing date 2023-06-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14060545
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Chiral diene-promoted room temperature conjugate arylation: highly enantioselective synthesis of substituted chiral phenylalanine derivatives and α,α-di(arylmethyl)acetates.

    Chen, Jian-Ping / Xu, Ming-Hua

    Organic & biomolecular chemistry

    2020  Volume 18, Issue 24, Page(s) 4569–4574

    Abstract: A highly enantiocontrolled room temperature rhodium-catalyzed conjugate arylation process was developed. The reaction proceeds through 1,4-addition of α-substituted acrylates followed by enantioselective protonation using a C1-symmetric chiral bicyclo[2, ... ...

    Abstract A highly enantiocontrolled room temperature rhodium-catalyzed conjugate arylation process was developed. The reaction proceeds through 1,4-addition of α-substituted acrylates followed by enantioselective protonation using a C1-symmetric chiral bicyclo[2,2,2] diene as the ligand and water as the proton source. This exceptionally simple protocol provides a reliable and practical access to structurally important phenylalanine derivatives and α,α-di(arylmethyl)acetates in high yields (up to 99%) with good to excellent ee values (up to 99%).
    Language English
    Publishing date 2020-04-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d0ob00616e
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article ; Online: The gut bacterium Serratia marcescens mediates detoxification of organophosphate pesticide in Riptortus pedestris by microbial degradation

    Xia, Xie‐Jiang / Wu, Wei / Chen, Jian‐Ping / Shan, Hong‐Wei

    Journal of Applied Entomology. 2023 July, v. 147, no. 6 p.406-415

    2023  

    Abstract: Organophosphate insecticides have been widely used in agriculture to control insect pests and raised growing problems including insecticide resistance. According to recent studies, microbial symbionts play important roles in developing insecticide ... ...

    Abstract Organophosphate insecticides have been widely used in agriculture to control insect pests and raised growing problems including insecticide resistance. According to recent studies, microbial symbionts play important roles in developing insecticide resistance. The bean bug Riptortus pedestris is a notorious pest of leguminous crops, harbouring diverse microorganisms in their insect midguts. However, the potential biological roles of many gut‐associated bacteria are largely unknown. In this study, we isolated a bacterial strain from the midgut of R. pedestris and identified it as Serratia marcescens based on its morphological characteristics and the phylogenetic analysis of the 16S rRNA gene sequence. A halo of phosphorus‐solubilizing bacteria was observed on a medium containing lecithin and an organophosphorus insecticide dimethoate. Subsequently, the microbial degradation of dimethoate was determined using Gas Chromatography with Mass Spectroscopy (GC–MS). Further analysis indicated that the S. marcescens contained organophosphorus‐degrading MBL‐fold metallo‐hydrolase gene. Additionally, we discovered that the bacterium could colonize the insect midgut stably and enhance the host survivorship when exposed to dimethoate. Our results revealed that an insect gut‐associated bacterium could degrade organophosphorus compounds, thereby reducing related insecticide toxicity to the insect hosts. These findings provided further insights into the host‐microbiota interactions underpinning the development of insecticide resistance.
    Keywords Fabaceae ; Riptortus clavatus ; Riptortus pedestris ; Serratia marcescens ; bacteria ; biodegradation ; dimethoate ; entomology ; gas chromatography ; genes ; insecticide resistance ; insects ; intestinal microorganisms ; lecithins ; mass spectrometry ; midgut ; nucleotide sequences ; pests ; phylogeny ; survival rate ; symbionts ; toxicity
    Language English
    Dates of publication 2023-07
    Size p. 406-415.
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 631360-7
    ISSN 1439-0418 ; 0044-2240 ; 0931-2048
    ISSN (online) 1439-0418
    ISSN 0044-2240 ; 0931-2048
    DOI 10.1111/jen.13122
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 430: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: Diversity of RNA viruses in agricultural insects.

    Qi, Yu-Hua / Ye, Zhuang-Xin / Zhang, Chuan-Xi / Chen, Jian-Ping / Li, Jun-Min

    Computational and structural biotechnology journal

    2023  Volume 21, Page(s) 4312–4321

    Abstract: Recent advancements in next-generation sequencing (NGS) technology and bioinformatics tools have revealed a vast array of viral diversity in insects, particularly RNA viruses. However, our current understanding of insect RNA viruses has primarily focused ...

    Abstract Recent advancements in next-generation sequencing (NGS) technology and bioinformatics tools have revealed a vast array of viral diversity in insects, particularly RNA viruses. However, our current understanding of insect RNA viruses has primarily focused on hematophagous insects due to their medical importance, while research on the viromes of agriculturally relevant insects remains limited. This comprehensive review aims to address the gap by providing an overview of the diversity of RNA viruses in agricultural pests and beneficial insects within the agricultural ecosystem. Based on the NCBI Virus Database, over eight hundred RNA viruses belonging to 39 viral families have been reported in more than three hundred agricultural insect species. These viruses are predominantly found in the insect orders of Hymenoptera, Hemiptera, Thysanoptera, Lepidoptera, Diptera, Coleoptera, and Orthoptera. These findings have significantly enriched our understanding of RNA viral diversity in agricultural insects. While further virome investigations are necessary to expand our knowledge to more insect species, it is crucial to explore the biological roles of these identified RNA viruses within insects in future studies. This review also highlights the limitations and challenges for the effective virus discovery through NGS and their potential solutions, which might facilitate for the development of innovative bioinformatic tools in the future.
    Language English
    Publishing date 2023-09-03
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2694435-2
    ISSN 2001-0370
    ISSN 2001-0370
    DOI 10.1016/j.csbj.2023.08.036
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article: A Novel Nitrogen-Fixing Bacterium

    Huang, Qiuyan / Feng, Yilu / Shan, Hong-Wei / Chen, Jian-Ping / Wu, Wei

    Insects

    2023  Volume 14, Issue 5

    Abstract: Nitrogen is a crucial element for the growth and development of insects, but herbivorous insects often suffer from nitrogen nutrition deficiencies in their diets. Some symbiotic microorganisms can provide insect hosts with nitrogen nutrition through ... ...

    Abstract Nitrogen is a crucial element for the growth and development of insects, but herbivorous insects often suffer from nitrogen nutrition deficiencies in their diets. Some symbiotic microorganisms can provide insect hosts with nitrogen nutrition through nitrogen fixation. Extensive research has clearly demonstrated the process of nitrogen fixation by symbiotic microorganisms in termites, while evidence supporting the occurrence and significance of nitrogen fixation in the diets of the Hemiptera is less conclusive. In this study, we isolated a strain of
    Language English
    Publishing date 2023-04-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14050431
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  7. Article: Distribution, Vertical Transmission, and Cooperative Mechanisms of Obligate Symbiotic Bacteria in the Leafhopper

    Wu, Wei / Lei, Jia-Ning / Mao, Qianzhuo / Tian, Yan-Zhen / Shan, Hong-Wei / Chen, Jian-Ping

    Insects

    2023  Volume 14, Issue 8

    Abstract: Many insects rely on ancient symbiotic bacterial associations for essential nutrition. Auchenorrhyncha commonly harbor two obligate symbionts: ...

    Abstract Many insects rely on ancient symbiotic bacterial associations for essential nutrition. Auchenorrhyncha commonly harbor two obligate symbionts:
    Language English
    Publishing date 2023-08-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14080710
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article: Insights into Brochosome Distribution, Synthesis, and Novel Rapid-Release Mechanism in

    Wu, Wei / Lei, Jia-Ning / Mao, Qianzhuo / Tian, Yan-Zhen / Shan, Hong-Wei / Chen, Jian-Ping

    Insects

    2023  Volume 14, Issue 9

    Abstract: The leafhopper family Cicadellidae, comprising over 22,000 species, exhibits a unique behavior of anointing their bodies with excretions containing brochosomes. Brochosomes are synthesized in the distal segment of the Malpighian tubules and serve various ...

    Abstract The leafhopper family Cicadellidae, comprising over 22,000 species, exhibits a unique behavior of anointing their bodies with excretions containing brochosomes. Brochosomes are synthesized in the distal segment of the Malpighian tubules and serve various functions, including hydrophobic protection and defense against pathogens and predators. In this study, we investigated the distribution, synthesis, and release mechanisms of brochosomes in the rice pest leafhopper
    Language English
    Publishing date 2023-08-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14090734
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article: Combined Transcriptome and Proteome Analysis of the Protein Composition of the Brochosomes of the Leafhopper

    Wu, Wei / Ye, Zhuangxin / Mao, Qianzhuo / Shan, Hong-Wei / Li, Jun-Min / Chen, Jian-Ping

    Insects

    2023  Volume 14, Issue 10

    Abstract: Brochosomes, unique coatings on the integuments of Cicadellidae, are synthesized in specialized glandular sections of Malpighian tubules. However, limited knowledge exists regarding the protein composition of brochosomes. In this study, we conducted ... ...

    Abstract Brochosomes, unique coatings on the integuments of Cicadellidae, are synthesized in specialized glandular sections of Malpighian tubules. However, limited knowledge exists regarding the protein composition of brochosomes. In this study, we conducted transcriptomic and proteomic profiling to characterize the brochosome protein composition in the rice green leafhopper
    Language English
    Publishing date 2023-09-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14100784
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  10. Article: Molecular Characterization of an Isolate of Bean Common Mosaic Virus First Identified in Gardenia Using Metatranscriptome and Small RNA Sequencing.

    Xu, Zhong-Tian / Weng, Hai-Tao / Chen, Jian-Ping / Zhang, Chuan-Xi / Li, Jun-Min / Li, Yi-Yuan

    The plant pathology journal

    2024  Volume 40, Issue 1, Page(s) 73–82

    Abstract: Gardenia (Gardenia jasminoides) is a popular and economically vital plant known for its ornamental and medicinal properties. Despite its widespread cultivation, there has been no documentation of plant viruses on gardenia yet. In the present study, ... ...

    Abstract Gardenia (Gardenia jasminoides) is a popular and economically vital plant known for its ornamental and medicinal properties. Despite its widespread cultivation, there has been no documentation of plant viruses on gardenia yet. In the present study, gardenia leaves exhibiting symptoms of plant viral diseases were sampled and sequenced by both metatranscriptome and small RNA sequencing. As a consequence, bean common mosaic virus (BCMV) was identified in gardenia for the first time and named BCMV-gardenia. The full genome sequence of BCMV-gardenia is 10,054 nucleotides (nt) in length (excluding the poly (A) at the 3' termini), encoding a large polyprotein of 3,222 amino acids. Sequence analysis showed that the N-termini of the polyprotein encoded by BCMV-gardenia is less conserved when compared to other BCMV isolates, whereas the C-termini is the most conserved. Maximum likelihood phylogenetic analysis showed that BCMV-gardenia was clustered closely with other BCMV isolates identified outside the leguminous plants. Our results indicated that the majority of BCMV-gardenia virus-derived small interfering RNAs (vsiRNAs) were 21 nt and 22 nt, with 21 nt being more abundant. The first nucleotide at the 5' termini of vsiRNAs derived from BCMV-gardenia preferred U and A. The ratio of vsiRNAs derived from sense (51.1%) and antisense (48.9%) strands is approaching, and the distribution of vsiRNAs along the viral genome is generally even, with some hot spots forming in local regions. Our findings could provide new insights into the diversity, evolution, and host expansion of BCMV and contribute to the prevention and treatment of this virus.
    Language English
    Publishing date 2024-02-01
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2529195-6
    ISSN 2093-9280 ; 1598-2254 ; 0256-8608
    ISSN (online) 2093-9280
    ISSN 1598-2254 ; 0256-8608
    DOI 10.5423/PPJ.OA.11.2023.0163
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top