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Chinese Journal of Chemistry 2022年第2期40卷 235-246页

作者： Shou-Mao Shen Zai-Yong Zhang Li-Gong Yao Jian-Rong Wang Yue-Wei Guo Xu-Wen Li State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China School of Chinese Materia Medica Nanjing University of Chinese MedicineNanjingJiangsu 210023China Bohai rim Advanced Research Institute for Drug Discovery 198 Binhai East RoadHigh-tech ZoneYantaiShandong 264000China

A detailed chemical investigation of the South China Sea nudibranch Hexabranchus sanguineus,as well as its possible sponge-prey Acanthella cavernosa,led to the isolation of fifteen new nitrogenous sesquiterpenoids,namely ximaocavernosins A-0,including seven cadinanes(1-7),seven spiroaxanes(12-18)and one aromadendrane(19),together with thirteen known related compounds(8-11 and 20-28).

关键词： Hexabranchus sanguineus Acanthella cavernosa Chiral separation Stereochemistry chemical ecology

An Explorer of chemical Biology of Plant Natural Products in Southwest China,Xiaojiang Hao

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Natural Products and Bioprospecting 2018年第4期8卷 217-226页

作者： Yue-mao Shen Duo-zhi Chen School of Pharmaceutical Sciences Shandong UniversityJinan 250012People’s Republic of China State Key Laboratory of Functions and Applications of Medicinal Plants Academic CityNo.3491 Platina WayHi-tech ZoneGuiyangGuizhou 550014People’s Republic of China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China

Xiaojiang Hao,who obtained Master Degree from Kunming Institute of Botany(KIB),Chinese Academy of Sciences(CAS)in 1985,and Doctor in Pharmacy degree in Pharmacy from Institute for chemical Research,Kyoto University,in 1990,was born in Chongqing in July,*** 1991,he returned to KIB,CAS,as an Associate professor and served as the chair of the Department of *** 1994,he was promoted to a full professor at the current *** served as the Deputy Director of KIB and the Director of Open Laboratory of Phytochemistry from 1995 to 1997,and the Director of KIB from 1997 to *** Hao has published more than 450 peer-reviewed SCI papers,which have been cited over 6000 *** has obtained one PCT patent and 23 patents in *** to his tremendous efforts,one candidate drug,phenchlobenpyrrone,has entered the Phase II clinical trail for the treatment of Alzheimer’s ***,he won the First Prize of Natural Sciences in Yunnan Province for three times,and Ho Leung Ho Lee Fund Science and Technology Innovation Award in 2017.

关键词： Natural products science Medicinal chemistry chemical biology chemical ecology

Behavioral evidence for contextual olfactory-mediated avoidance of the ubiquitous phytopathogen Botrytis cinerea by Drosophila suzukii

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Insect Science 2020年第4期27卷 771-779页

作者： Dong H.Cha Stephen P.Hesler Gabrielle Brind'Amour Karen S.Wentworth Sara Villani Kerik D.Cox Matthew T.Boucher Anna Wallingford Shinyoung K.Park Jan Nyrop Gregory M.Loeb USDA-ARS US Pacific Basin Agricultural Research CenterHiloHawaiiUSA Department of Entomology Cornell AgriTechCornell UniversityGenevaNew YorkUSA Plant Pathology and Plant-Microbe Biology Section Cornell AgriTechCornell UniversityGenevaNew YorkUSA

Herbivorous insects may benefit from avoiding the smell produced by phytopathogens infecting plant host tissue if the infected tissue reduces insect ***,in many cases the same species of phytopathogen can also infect host plant tissues that do not directly affect herbivore ***,insects may benefit from differentiating between pathogen odors emanating from food and nonfood *** is based on the hypothesis that unecessarily staying attentive to pathogen odor from nonfood tissue may incur opportunity costs associated with not responding to other important survival *** this study adults of Drosophila suzukii Matsumura,an invasive larval frugivore,showed reduced attraction to the odor of raspberry fruit,a food tissue,when infected with Botrytis cinerea Pers.,a ubiquitous phytopathogen,in favor of odors of uninfected raspberry ***,*** oviposited fewer eggs on infected raspberry fruit relative to uninfected raspberry *** survival and adult size after eclosion were significantly reduced when reared on ***-infected raspberry relative to uninfected ***,when the behavioral choice experiment was repeated using Botrytis-infected vsuninfected strawberry leaves,a nonfood tissue,in combination with fresh raspberry fruit,odor from ***-infected leaves did not reduce *** attraction to raspberries rel-ative to raspberries with uninfected *** behavioral results illustrate the important role context can play in odor-mediated interactions between insects,plants and *** discuss implications of our findings for developing a repellent that can be useful for the management of ***.

关键词： chemical ecology host finding behavior insect-microbe interactions pest management repellent semiochemicals

Plant Terpenoids： Biosynthesis and Ecological Functions

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Journal of Integrative Plant Biology 2007年第2期49卷 179-186页

作者： Ai-Xia Cheng Yong-Gen Lou Ying-Bo Mao Shan Lu Ling-Jian Wang Xiao-Ya Chen National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 200032 China Institute of Insect Sciences Zhejiang University Hangzhou 310029 China

Among plant secondary metabolites terpenolds are a structurally most diverse group; they function as phytoalexins In plant direct defense, or as signals In Indirect defense responses which involves herbivores and their natural enemies. In recent years, more and more attention has been paid to the Investigation of the ecological role of plant terpenolds. The biosynthesis pathways of monoterpenes, sesquiterpenes, and diterpenes Include the synthesis of C5 precursor isopentenyl diphosphate （IPP） and Its allylic isomer dlmethylallyl dlphosphate （DMAPP）, the synthesis of the immediate diphosphate precursors, and the formation of the diverse terpenoids. Terpene synthases （TPSs） play a key role In volatile terpene synthesis. By expression of the TPS genes, significant achievements have been made on metabolic engineering to Increase terpenoid production. This review mainly summarizes the recent research progress In elucidating the ecological role of terpenoids and characterization of the enzymes Involved in the terpenold biosynthesis. Spatial and temporal regulations of terpenoids metabolism are also discussed.

关键词： chemical ecology metabolism regulation plant terpenoids terpene synthase.

Male Burmese pythons follow female scent trails and show sex-specific behaviors

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Integrative Zoology 2019年第5期14卷 460-469页

作者： Shannon A.RICHARD Eric A.TILLMAN John S.HUMPHREY Michael L.AVERY M.Rockwell PARKER Department of Biology James Madison UniversityHarrisonburgVirginiaUSA National Wildlife Research Center Florida Field StationU.S.Department of AgricultureGainesvilleFloridaUSA

Animals communicate with potential mates using species-specific signals,and pheromones are powerful sexual signals that modify conspecific behavior to facilitate mate *** the vertebrates,snakes are especially adept in mate searching via chemical trailing,which is particularly relevant given that many snake species are invasive outside their native *** signals used in mate choice are,thus,potentially valuable tools for management of invasive snake *** Burmese python(Python bivittatus)is an invasive snake in the Florida Everglades where it is negatively impacting native *** this study,we sought to:(i)determine if males can follow conspecific chemical trails in a Y-maze;and(ii)describe the mate searching behaviors exhibited by males while *** males consistently followed a single female scent trail in the maze,but when only a male scent trail was present they did not discriminate between the male and blank *** of tongue-flicking,a proxy for chemosensory sampling,was also marginally higher when males were following female versus male scent ***,when both female and male scent trails were simultaneously present in the Y-maze,males did not show a preference for the female arm,although the tongue-flick rate was higher in the female-only trial compared to female versus *** of multiple male behaviors individually and using an ethogram revealed that behaviors were more frequent and complex in the female-only trials compared to male-only *** behavioral trials are needed to determine if an effective pheromonal approach to Burmese python management is possible.

关键词： chemical ecology invasive species pheromone snake trailing

Antibacterial and bioiflm inhibitory activities of bacteria associated with polychaetes

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Journal of Coastal Life Medicine 2015年第6期 495-502页

作者： Chellamnadar Vaikundavasagom Sunjaiy Shankar Sathianeson Satheesh Nadarajan Viju Stanislaus Mary Josephine Punitha Center for Marine Science and Technology Manonmaniam Sundaranar UniversityRajakkamangalamTamil NaduIndia Department of Marine Biology Faculty of Marine SciencesKing Abdulaziz UniversityJeddahSaudi Arabia

Objective:To study the antibacterial and antibiofilm activities expressed by epibiotic bacteria associated with the polychaetes Platynereis dumerilii and Syllis ***:A total of 32 cultivable bacterial strains were isolated from the two polychaete *** crude extracts were tested for antibacterial activity and biofilm inhibitory activity against pathogenic and biofilm-forming bacterial *** of the strains which showed strong activity were analyzed by thin-layer chromatography(TLC)and the bacterial strains were identified based on 16S rRNA gene ***:Extracts of 13 bacterial strains showed inhibitory activity against pathogenic and biofilm-forming *** crude extracts also affected the synthesis of extracellular polymeric substances and cell surface hydrophobicity of the Alteromonas *** from marine *** adhesion of Alteromonas *** glass surface showed significant variation between surface-associated bacterial crude extract treatment and control *** the 13 bacteria,two strains PA8 and PA19 were further analyzed for bioactive *** chromatography indicated the presence of a single active fraction in the crude extract of both the bacterial *** epibiotic bacterial strains P8 and P19 were identified as Exiguobacterium *** Actinobacterium *** based on 16S rRNA gene ***:The present study indicates that bacteria associated with marine invertebrates inhabiting the coastal waters could be used as a potential source for the isolation of bioactive metabolites.

关键词： Epibiotic bacteria Antimicrobial activity Biofilm Bioactive compounds chemical ecology Marine drugs

Characterization of sugar diversity in floral and extra-floral nectar from the Coastal Coral Tree(Erythrina caffra Thunb.)in Southern California

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Open Journal of ecology 2014年第2期4卷 23-27页

作者： Victor D.Carmona-Galindo Kenny Morales Renee Maser Julius Doyle Mera Gobrial Biology Department Loyola Marymount UniversityLos AngelesUSA Global Health Sciences Program University of California at San FranciscoSan FranciscoUSA Environmental Science Program Loyola Marymount UniversityLos AngelesUSA Department of Anthropology University of WashingtonSeattleWashington DCUSA Global Medicine Program University of Southern CaliforniaLos AngelesUSA

The Coastal Coral Tree (Erythrina caffra Thunb.) produces floral nectar (FN) that serves to attract pollinating insects, but also secretes nectar from extra-floral (EFN) glands that serves to attract predatory insects, such as ants. While studies on myrmecophytes (i.e. specialized plants that attract and interact with ants) have primarily focused on interspecific evaluations of EFN chemistry, the Coastal Coral tree offers an opportunity to contrast intraspecific nectar chemistry with differing evolutionary and ecological functions. We hypothesized that the richness of (molecular) sugar species, relative concentrations, and diversity of sugars in FN and foliar EFN would diverge due to differences in the ecological role of the two types of nectar. High performance liquid chromatography with refractive index detection was used to identify the richness of sugar species (based on retention time), measure the relative concentrations, and evaluate the diversity of sugars in FN and foliar EFN secretions. We detected sugar species unique to each gland type and reported significant differences in the relative concentration of one sugar species common to both gland types. While the mean diversity index of sugars was similar for both gland types, the diversity of foliar EFN sugars was significantly more variable than that of FN sugars. The composition of FN showed little variation, and was reflective of its fundamental role in plant reproduction. Foliar EFN, however, demonstrated the variability expected of a context-dependent myrmecophyte that interacts with a facultative ant species assemblage across a mosaic of abiotic and biotic conditions.

关键词： chemical ecology Diversity Index Exotic Species biology Myrmecophyte Nectar Chemistry