Microbiological Control Of The Aquatic Weed Myriophyllum Spp
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Microbiological Control Of The Aquatic Weed Myriophyllum Spp
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Author : Haim B. Gunner
language : en
Publisher:
Release Date : 1982
Microbiological Control Of The Aquatic Weed Myriophyllum Spp written by Haim B. Gunner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Aquatic weeds categories.
Microbiological Control Of Eurasian Watermilfoil
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Author : Haim B. Gunner
language : en
Publisher:
Release Date : 1990
Microbiological Control Of Eurasian Watermilfoil written by Haim B. Gunner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Aquatic Plant Control Research Program Microbiological Control Of Eurasian Watermilfoil
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Author : H. B. Gunner
language : en
Publisher:
Release Date : 1983
Aquatic Plant Control Research Program Microbiological Control Of Eurasian Watermilfoil written by H. B. Gunner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Cellulolytic and pectinolytic microorganisms were isolated from the microbial populations naturally resident in the phyllosphere of Eurasian watermilfoil, Myriophyllum spicatum and of M. heterophyllum. The yield of their respective operative enzymes was maximized by growth in appropriate cellulose and pectin media; the organisms, when subsequently applied to the plants, accelerated the plants' necrosis and decline. That cellulose and pectin are particularly vulnerable target tissues in Myriophyllum spp. was confirmed by the significant increase in plant necrosis achieved over untreated controls by the simple addition of sterile cellulose and pectin media to respective test chambers. Presumably this reflected and selective stimulus provided by these substrates to the resident cellulolytic and pectinolytic microflora. A consortium of cyanobacteria associated with Myriophyllum was also found to accelerate necrosis, as did its sterile growth medium; again, presumably, as a reflection of the selective stimulus provided to the cyanobacteria in the phyllosphere. The species determination of phyllosphere residents was reflected in the significantly higher pathogenic potential of the isolates from M. spicatum to that species than to M. heterophyllum.
Microbiological Control Of Eurasian Watermilfoil
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Author : Haim B. Gunner
language : en
Publisher:
Release Date : 1990
Microbiological Control Of Eurasian Watermilfoil written by Haim B. Gunner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Aquatic weeds categories.
An attempt was made to develop an ecosystems approach for the control of the nuisance aquatic plant Eurasian watermilfoil, Myriophyllum spicatum L. To this end, a cellulolytic fungus, Mycoleptodiscus terrestris (Gerdemann) Ostazeski (M.t.), and a pectinolytic bacterium, Bacillus sp. strain P8 (BSP8), were isolated from the microbial populations naturally resident in the phyllosphere of this plant. These organisms grew compatibly with each other, were able to compete successfully with other microflora on the plant surface, and were able to resist the inhibitory action of phenolic compounds produced by the plants. Application of these organisms to the plant, after growth in appropriate media, resulted in plant decline and eventual death. The process of decline included hormone-like stress effects on the plant induced by BSP8 (internodal elongation), and increase in strongly pectinolytic microbial populations associated with the plant, and penetration into plant tissue by the fungal mycelium. Specificity trials of M. t. infectivity revealed it to be very weakly pathogenic to several aquatic species and terrestrial plants, and thereby without potential significant impact outside the area of designated application.
Field Evaluation Of Microbiological Control Agents On Eurasian Watermilfoil
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Author : Haim B. Gunner
language : en
Publisher:
Release Date : 1988
Field Evaluation Of Microbiological Control Agents On Eurasian Watermilfoil written by Haim B. Gunner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Aquatic weeds categories.
Aquatic Plant Control Research Program Host Specificity Of Microbial Flora From Eurasian Watermilfoil
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Author : John H. Andrews
language : en
Publisher:
Release Date : 1990
Aquatic Plant Control Research Program Host Specificity Of Microbial Flora From Eurasian Watermilfoil written by John H. Andrews and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
A laboratory assay was developed to evaluate microbial colonization of Eurasian watermilfoil (Myriophyllum spicatum). The assay consisted of a 24-hr association phase of plants with inoculum, followed by two microbial growth cycles of 3 days each. The system was used to evaluate the colonization potential of the fungi Colletotrichum gloeosporioides, Acremonium curvulum, Cladosporium herbarum, Aureobasidium pullulans, Paecilomyces sp., and an unidentified sterile, septate fungus. The fungi differed in the extent to which they attached to watermilfoil and in their ability to grow in association with it. There were relatively few significant differences among the tightly attached fungal populations after 24 hr, but growth of the better colonizers led to a greater number of significant differences after 4 and 7 days. The milfoil pathogen C. gloeosphorioides, and A. curvulum, a fungus commonly found as an epiphyte on watermilfoil, were the two best colonizers. In host range tests, they were found to be nonspecific to milfoil. Aureobasidium pullulans was the only fungus that consistently failed to establish an increasing population on milfoil.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1983
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
The Control Of Aquatic Weeds And Algae
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Author : Aylwin P. Chancellor
language : en
Publisher:
Release Date : 1958
The Control Of Aquatic Weeds And Algae written by Aylwin P. Chancellor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Algae categories.
Selected Water Resources Abstracts
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Author :
language : en
Publisher:
Release Date : 1991
Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Hydrology categories.
Plant Pathogens As Agents For Biological And Integrated Control Of Aquatic Plants
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Author : John H. Andrews
language : en
Publisher:
Release Date : 1980
Plant Pathogens As Agents For Biological And Integrated Control Of Aquatic Plants written by John H. Andrews and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Aquatic plants categories.