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What do we know about biological nitrogen fixation in insects? Evidence and implications for the insect and the ecosystem

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Insect Science 2020年第3期27卷 392-403页

作者： nitsan bar-shmuel Adi Behar Michal Segoli Mitrani Department of Desert Ecology Jacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevSede Boqer CampusIsrael Kimron Veterinary Institute Department of ParasitologyBet DaganIsrael

Many insects feed on a low‐nitrogen diet,and the origin of their nitrogen supply is poorly *** has been hypothesized that some insects rely on nitrogen‐fixing bacteria(diazotrophs)to supplement their *** fixation by diazotrophs has been extensively studied and convincingly demonstrated in termites,while evidence for the occurrence and role of nitrogen fixation in the diet of other insects is less ***,we summarize the methods to detect nitrogen fixation in insects and review the available evidence for its occurrence(focusing on insects other than termites).We distinguish between three aspects of nitrogen fixation investigations:(i)detecting the presence of potential diazotrophs;(ii)detecting the activity of the nitrogen‐fixing enzyme;and(iii)detecting the assimilation of fixed nitrogen into the insect *** show that although evidence from investigations of the first aspect reveals ample opportunities for interactions with potential diazotrophs in a variety of insects,demonstrations of actual biological nitrogen fixation and the assimilation of fixed nitrogen are restricted to very few insect groups,including wood‐feeding beetles,fruit flies,leafcutter ants,and a wood *** then discuss potential implications for the insect's fitness and for the ecosystem as a *** suggest that combining these multiple approaches is crucial for the study of nitrogen fixation in insects,and argue that further demonstrations are desperately needed in order to determine the relative importance of diazotrophs for insect diet and fitness,as well as to evaluate their overall impact on the ecosystem.

关键词： biological nitrogen fixation diazotrophs gut microbiome insect diet

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Modulation of the intracellular inhibitory checkpoint SHP-1 enhances the antitumor activity of engineered NK cells

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Cellular & Molecular Immunology 2021年第5期18卷 1314-1316页

作者： Aviad Ben-shmuel Guy Biber Batel Sabag Mira barda-Saad The Mina and Everard Goodman Faculty of Life Sciences Bar-Ilan UniversityRamat-Gan5290002Israel

Natural killer(NK)cells are innate lymphoid cells(ILCs)that eliminate virally infected and cancerous *** cells directly induce target cell death and release cytokines and chemokines that activate the adaptive arm of t... 详细信息

关键词： killer death lymphoid

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Instruments to Analyze Patient-Physician Communication during Electronic Medical Records Use in Primary Care

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通讯和计算机（中英文版） 2013年第2期10卷 131-140页

作者： Assis-Hassid Shiri Reychav Iris Pliskin Joseph S Reis shmuel Heart Tsipi Department of Industrial Engineering and Management Ben-Gurion University of the Negev Beer Sheva 84105 Israel Department of Industrial Engineering and Management Ariel University Center Ariel 40700 Israel Department of Industrial Engineering and Management Department of Health Systems Management B en-Gurion University of the Negev Beer Sheva 84105 Israel Faculty of Medicine Bar-Ilan University the Galilee Safed and Misgav Health center Clafit Health Services Haifa & WesternGalilee district Ramat-Gan 52900 Israel

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