Influence of immigration on epiphytic bacterial populations on navel orange leaves
Article Abstract:
Immigration of bacteria from plants with larger epiphytic bacterial populations accounts for the increase in bacterial populations on navel orange leaves during winter. However, the presence of plant species, such as citrus and olive, in adjacent orchards adversely affects such immigration. Bacterial population increase is 6- to 30-fold greater on navel orange leaves adjacent to plant species other than citrus. Navel orange leaves also show an increasing ability to supercool with increasing distance from the upwind edge of orchards adjacent to plant species other than citrus.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
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Characteristics of insertional mutants of Pseudomonas syringae with reduced epiphytic fitness
Article Abstract:
The characteristics of insertional mutants of Pseudomonas syringae that exhibited decreased abilities to grow or survive on leaves were described. A sample freezing procedure was used to estimate the population sizes of mutants on wet and dry leaves. This approach allowed a large number of genes in P. syringae that contribute to epiphytic fitness to be identified. All the mutants retained the abilities to produce disease symptoms on the host plant, bean, to incite a hypersensitive response on the non-host plant, tobacco, and to produce a fluorescent pyoverdine siderophore.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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Novel method for identifying bacterial mutants with reduced epiphytic fitness
Article Abstract:
A technique for the rapid identification of bacterial mutants with quantitatively different population sizes in a natural habitat based on measurement of ice nucleus production was described. This approach allowed differentiation of mutants of an ice-nucleation-active bacterial strain that colonize leaves to different levels. The population sizes on leaves were then measured from estimates of the freezing temperature of the leaf.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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- Abstracts: Application of fungal and bacterial production methodologies to decomposing leaves in streams. Fungal growth, production, and sporulation during leaf decomposition in two streams
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