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Author : Haim B. Gunner
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (31 download)
Download or read book Microbiological Control of the Aquatic Weed, Myriophyllum Spp written by Haim B. Gunner and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Haim B. Gunner
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (319 download)
Download or read book Microbiological Control of Eurasian Watermilfoil written by Haim B. Gunner and published by . This book was released on 1990 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. B. Gunner
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (227 download)
Download or read book Aquatic Plant Control Research Program. Microbiological Control of Eurasian Watermilfoil written by H. B. Gunner and published by . This book was released on 1983 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Haim B. Gunner
Publisher :
ISBN 13 :
Total Pages : 125 pages
Book Rating : 4.:/5 (155 download)
Download or read book Microbiological Control of Eurasian Watermilfoil written by Haim B. Gunner and published by . This book was released on 1990 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Haim B. Gunner
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (91 download)
Download or read book Field Evaluation of Microbiological Control Agents on Eurasian Watermilfoil written by Haim B. Gunner and published by . This book was released on 1988 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1368 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William C. Zattau
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (227 download)
Download or read book Aquatic Plant Control Research Program. A Survey of the Continental United States for Pathogens of Eurasian Watermilfoil written by William C. Zattau and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of the continental United States for pathogens of Myriophyllum spicatum (Eurasian watermilfoil) was conducted. More than 50 water bodies, located in 10 states, were sampled for diseased plants. Sample sites represented a geographic and climatic cross section of aquatic systems in the continental United States, including ponds, lakes, reservoirs, rivers, and canals. At the conclusion of the survey, 792 isolates had been collected from tissue samples and maintained in pure culture. Of these, 462 were bacteria and 330 were fungi; many isolates were duplicates but were retained because they possibly represented different strains of the same species. Lytic enzyme assays indicated that 14 bacterial and 22 fungal isolates produced pectinase or cellulose. Enzyme assays were used to screen for the more promising isolates for additional study as potential biocontrol agents for the management of Eurasian watermilfoil. The 32 isolates were then assayed healthy sprigs of the target species in test tubes. Results indicated that five fungal isolates should be considered for additional study. Keywords: Biological weed control; Aquatic weeds; Aquatic plants. (kt).
Author : John H. Andrews
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (227 download)
Download or read book Aquatic Plant Control Research Program: Host Specificity of Microbial Flora from Eurasian Watermilfoil written by John H. Andrews and published by . This book was released on 1990 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Aylwin P. Chancellor
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.E/5 ( download)
Download or read book The Control of Aquatic Weeds and Algae written by Aylwin P. Chancellor and published by . This book was released on 1958 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 962 pages
Book Rating : 4.3/5 (91 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D.O. TeBeest
Publisher : Springer Science & Business Media
ISBN 13 : 1461596807
Total Pages : 284 pages
Book Rating : 4.4/5 (615 download)
Download or read book Microbial Control of Weeds written by D.O. TeBeest and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is appropriate at this time to reflect on two decades of research in biological control of weeds with fungal plant pathogens. Some remarkable events have occurred in the last 20 years that represent a flurry of activity far beyond what could reasonably have been predicted. In 1969 a special topics review article by C. L. Wilson was published in Annual Reviews of Phytopathology that examined the literature and the potential for biological control of weeds with plant pathogens. In that same year, experiments were conducted in Arkansas that determined whether a fungal plant pathogen could reduce the infestation of a single weed species in rice fields. In Florida a project was under way to determine the potential use of a soil-borne plant pathogen as a means for controlling a single weed species in citrus groves. Work in Australia was published that described experiments that sought to determine whether a pathogen could safely and deliberately be imported and released into a country to control a weed of agricultural importance. All three projects were successful in the sense that Puccinia chondrillina was released into Australia to control rush skeleton weed and was released later into the United States as well, and that Colletotrichum gloeosporioides f.sp. aeschynomene and Phytophthora palmivora were later both marketed for the specific purpose of controlling specific weed species.
Author :
Publisher :
ISBN 13 :
Total Pages : 1424 pages
Book Rating : 4.:/5 (319 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jayne T. MacLean
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (319 download)
Download or read book IPM and Biological Control of Weeds written by Jayne T. MacLean and published by . This book was released on 1992 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John H. Andrews
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (89 download)
Download or read book Plant Pathogens as Agents for Biological and Integrated Control of Aquatic Plants written by John H. Andrews and published by . This book was released on 1980 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (359 download)
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1974 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under a research contract all of the major lakes and rivers of Florida have been surveyed for diseases of water hyacinths (Eichhornia crassipes), alligator weed (Alternanthera philoxeroides), Eurasian water milfoil (Myriophyllum spicatum), and hydrilla (Hydrilla verticillata). Also included in these surveys were various locales in Georgia, Louisiana, Arkansas, Alabama, Tennessee, and the Chesapeake Bay area of Maryland. Overseas surveys have included Jamaica, Puerto Rico, Trinidad, El Salvador, Guatemala, Panama, Argentina, and India. Over 200 fungi and bacteria have been isolated from waterweeds. The most virulent pathogen of water hyacinths collected thus far is an isolate of Rhizoctonia solani from the Rio Chagres of Panama (Canal Zone). This fungus is lethal to water hyacinths as well as to inoculated plants of alligator weed, water lettuce, and pennywort (Hydrocotyl sp.). Another fungus, Cephalosporium zonatum, induces striking zonate lesions on the foliage of inoculated plants, and it is being studied as an integrated control agent.
Author : Aquatic Plant Control Research Program. Meeting
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (359 download)
Download or read book Proceedings, 25th Annual Meeting, Aquatic Plant Control Research Program written by Aquatic Plant Control Research Program. Meeting and published by . This book was released on 1991 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (318 download)
Download or read book Journal of Aquatic Plant Management written by and published by . This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
