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251.
Attraction of willow warblers to sawfly‐damaged mountain birches: novel function of inducible plant defences? 总被引:1,自引:0,他引:1
Plants wounded by invertebrate herbivores emit volatile compounds which invertebrate predators and parasitoids can utilize in locating herbivore prey or hosts. We studied the possibility that an analogical phenomenon might operate between plants and avian insectivores. We show that foliar damage by sawfly larvae on the mountain birch led a passerine bird (willow warbler) to prefer intact branches from trees with introduced larvae over intact branches from control trees. Besides olfaction, the UV vision of birds offers a possible mechanism, as some herbivore‐inducible leaf compounds, e.g. surface flavonoids, have UV spectral maxima well within the range of birds’ UV vision. 相似文献
252.
Quantitative maps of genetic interactions in yeast - Comparative evaluation and integrative analysis
Background
High-throughput genetic screening approaches have enabled systematic means to study how interactions among gene mutations contribute to quantitative fitness phenotypes, with the aim of providing insights into the functional wiring diagrams of genetic interaction networks on a global scale. However, it is poorly known how well these quantitative interaction measurements agree across the screening approaches, which hinders their integrated use toward improving the coverage and quality of the genetic interaction maps in yeast and other organisms. 相似文献253.
Tiina Myyryläinen Sheikh M Talha Sathyamangalam Swaminathan Raija Vainionpää Tero Soukka Navin Khanna Kim Pettersson 《Journal of nanobiotechnology》2010,8(1):27
A highly specific and novel dual-label time-resolved immunofluorometric assay was developed exploiting the unique emission
wavelengths of the intrinsically fluorescent terbium (Tb3+) and europium (Eu3+) tracers for the simultaneous detection of human immunodeficiency virus 1 (HIV-1) and hepatitis B virus (HBV) infections,
respectively. HIV-1 infection was detected using a double antigen sandwich format wherein anti-HIV-1 antibodies were captured
using an in vivo biotinylated version of a chimeric HIV-1 antigen and revealed using the same antigen labeled with Tb3+ chelate. Hepatitis B surface antigen (HBsAg), which served as the marker of HBV infection, was detected in a double antibody
sandwich using two monoclonal antibodies (mAbs), one chemically biotinylated to capture, and the other labeled with Eu3+ nanoparticles, to reveal. The performance of the assay was evaluated using a collection (n = 60) of in-house and commercially
available human sera panels. This evaluation showed the dual-label assay to possess high degrees of specificity and sensitivity,
comparable to those of commercially available, single analyte-specific kits for the detection of HBsAg antigen and anti-HIV
antibodies. This work demonstrates the feasibility of developing a potentially time- and resource-saving multiplex assay for
screening serum samples for multiple infections in a blood bank setting. 相似文献