Plant Animal Interactions
Mostrando 25-36 de 65 artigos, teses e dissertações.
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25. EFFECTS OF PHYSICAL AND BIOCHEMICAL CHARACTERISTICS OF CONTRASTING LEGUME SWARDS ON SELECTIVE BEHAVIOUR OF GRAZING CATTLE
In order to assess the effects of sward physical characteristics and secondary compound concentration on cattle ingestive behaviour and diet selection, two sets of experiments were carried out using two legumes [birdsfoot trefoil (Lotus corniculatus L.); red clover (Trifolium pratense L.)] with approximately neutral partial preference. The first set investig
Publicado em: 1998
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26. Corridors affect plants, animals, and their interactions in fragmented landscapes
Among the most popular strategies for maintaining populations of both plants and animals in fragmented landscapes is to connect isolated patches with thin strips of habitat, called corridors. Corridors are thought to increase the exchange of individuals between habitat patches, promoting genetic exchange and reducing population fluctuations. Empirical studie
The National Academy of Sciences.
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27. The nested assembly of plant–animal mutualistic networks
Most studies of plant–animal mutualisms involve a small number of species. There is almost no information on the structural organization of species-rich mutualistic networks despite its potential importance for the maintenance of diversity. Here we analyze 52 mutualistic networks and show that they are highly nested; that is, the more specialist specie
National Academy of Sciences.
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28. Abrogation of disease development in plants expressing animal antiapoptotic genes
An emerging topic in plant biology is whether plants display analogous elements of mammalian programmed cell death during development and defense against pathogen attack. In many plant–pathogen interactions, plant cell death occurs in both susceptible and resistant host responses. For example, specific recognition responses in plants trigger formation
The National Academy of Sciences.
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29. Cleavage of the Pseudomonas syringae Type III Effector AvrRpt2 Requires a Host Factor(s) Common among Eukaryotes and Is Important for AvrRpt2 Localization in the Host Cell
Many phytopathogenic bacteria use a type III secretion system to deliver type III effector proteins into the host plant cell. The Pseudomonas syringae type III effector AvrRpt2 is cleaved at a specific site when translocated into the host cell. In this study, we first demonstrate that the factor(s) required for AvrRpt2 cleavage is present in extracts from an
The American Society for Plant Biologists.
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30. Acyl-homoserine lactone quorum sensing in Gram-negative bacteria: A signaling mechanism involved in associations with higher organisms
Recent advances in studies of bacterial gene expression have brought the realization that cell-to-cell communication and community behavior are critical for successful interactions with higher organisms. Species-specific cell-to-cell communication is involved in successful pathogenic or symbiotic interactions of a variety of bacteria with plant and anim
The National Academy of Sciences.
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31. Interaction of pollinators and herbivores on plant fitness suggests a pathway for correlated evolution of mutualism- and antagonism-related traits
Different kinds of plant–animal interactions are ordinarily studied in isolation, yet considering the combined fitness effects of mutualistic and antagonistic interactions is essential to understanding plant character evolution. Functional, structural, or phylogenetic associations between attractive and defensive traits may be nonadaptive or result from co
National Academy of Sciences.
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32. Comparative Analysis of SET Domain Proteins in Maize and Arabidopsis Reveals Multiple Duplications Preceding the Divergence of Monocots and Dicots1[w]
Histone proteins play a central role in chromatin packaging, and modification of histones is associated with chromatin accessibility. SET domain [Su(var)3-9, Enhancer-of-zeste, Trithorax] proteins are one class of proteins that have been implicated in regulating gene expression through histone methylation. The relationships of 22 SET domain proteins from
The American Society for Plant Biologists.
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33. A new approach for the identification and cloning of genes: the pBACwich system using Cre/lox site-specific recombination
With current plant transformation methods (Agrobacterium, biolistics and protoplast fusion), insertion of DNA into the genome occurs randomly and in many instances at multiple sites. Associated position effects, copy number differences and multigene interactions can make gene expression experiments difficult to interpret and plant phenotypes less predictable
Oxford University Press.
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34. Peptide linkage mapping of the Agrobacterium tumefaciens vir-encoded type IV secretion system reveals protein subassemblies
Numerous bacterial pathogens use type IV secretion systems (T4SS) to deliver virulence factors directly to the cytoplasm of plant, animal, and human host cells. Here, evidence for interactions among components of the Agrobacterium tumefaciens vir-encoded T4SS is presented. The results derive from a high-resolution yeast two-hybrid assay, in which a library o
National Academy of Sciences.
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35. Bacteriocin small of Rhizobium leguminosarum belongs to the class of N-acyl-L-homoserine lactone molecules, known as autoinducers and as quorum sensing co-transcription factors.
Small bacteriocin was isolated from the culture broth of the gram-negative bacterium Rhizobium leguminosarum, which forms symbiotic nitrogen-fixing root nodules on a number of leguminous plants. The structure of the molecule was elucidated by spectroscopic methods and identified as N-(3R-hydroxy-7-cis-tetradecanoyl)-L-homoserine lactone. The absolute configu
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36. Cytosolic HSP90 associates with and modulates the Arabidopsis RPM1 disease resistance protein
The Arabidopsis protein RPM1 activates disease resistance in response to Pseudomonas syringae proteins targeted to the inside of the host cell via the bacterial type III delivery system. We demonstrate that specific mutations in the ATP-binding domain of a single Arabidopsis cytosolic HSP90 isoform compromise RPM1 function. These mutations do not affect the
Oxford University Press.