Journal ArticleDOI
Screening Procedures to Identify Soil-Borne Actinomycetes That Can Produce Herbicidal Compounds'
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An isolation and screening procedure was de- veloped to identify soil actinomycetes that can produce germination and growth inhibitors on agar plates and found several isolates observed to stimulate growth.Abstract:
An isolation and screening procedure was de- veloped to identify soil actinomycetes that can produce germination and growth inhibitors on agar plates. Eight of 120 isolates tested demonstrated severe toxicity on cress (Lepidium sativum L. 'Curly') and barnyardgrass (Echino- cbloa crus-galli (L.) Beauv. #3 ECHCG). Several isolates were observed to stimulate growth. In replicated tests using the agar screening procedure, compounds produced by micro - organisms significantly inhibited germination and growth of indicator plants. Organisms shown to produce toxins in agar media did not always produce toxins when grown in submerged culture. Additional index words. Microbial herbicides, natural productread more
Citations
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Journal ArticleDOI
Isolation and characterization of actinomycete antagonists of a fungal root pathogen.
TL;DR: Preliminary glasshouse experiments indicated that some of the actinomycetes protect germinating lettuce seeds against damping-off caused by P. ultimum, and some correlations between delayed seed germination and reduced 18-day plant biomass yields were seen.
Journal ArticleDOI
On laboratory bioassays in allelopathy
Inderjit,K. M. M. Dakshini +1 more
TL;DR: Several lab bioassays presently used in allelopathic research are discussed for their suitability to demonstrate allelopathy of ecological relevance and avoided practices, such as grinding plant material and isolation of allelochemicals are recommended.
Journal ArticleDOI
Management of Weed Seed Banks with Microorganisms
TL;DR: An overview of the effects of microorganisms on weed seed viability relative to seed bank depletion, and how this information can be applied to weed management is provided.
Book ChapterDOI
Allelopathy: Principles, Procedures, Processes, and Promises for Biological Control
Inderjit,K.I. Keating +1 more
TL;DR: The allelopathic potential of certain weed and crop species can influence the growth and distribution of associated weed species and the yield of desired plants, and allelopathy has been employed successfully in biocontrol programs focusing on control of problematic weeds and plant diseases.
Journal ArticleDOI
Herbicides from Natural Compounds
Stephen O. Duke,John Lydon +1 more
TL;DR: In this paper, a wide range of chemistries and mechanisms of action have potential in the design and development of new herbicides, and several natural products have been or are being developed as herbicides.
References
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Journal Article
On the Antibacterial Action of Cultures of a Penicillium, with Special Reference to their Use in the Isolation of B. influenzæ
TL;DR: It is suggested that it may be an efficient antiseptic for application to, or injection into, areas infected with penicillin-sensitive microbes, and its value as an aid to the isolation of B. influenzae has been demonstrated.
Book
Methods for research on the ecology of soil-borne plant pathogens.
Leander F. Johnson,Elroy A. Curl +1 more
Journal ArticleDOI
Selective isolation of aerobic Actinomycetes.
TL;DR: The composition of an arginine-glycerol-salt medium, suitable for the selective isolation of aerobic actinomycetes, was given and when soil samples were treated with calcium carbonate and plated on the AGS medium, higher total and relative plate counts were obtained than when other media and methods were used.
Journal ArticleDOI
Herbimycin, a new antibiotic produced by a strain of Streptomyces.
Satoshi Omura,Yuzuru Iwai,Yoko Takahashi,Noriaki Sadakane,Akira Nakagawa,Hitoshi Oiwa,Yasuhiro Hasegawa,Takashi Ikai +7 more
TL;DR: Herbimycin was found to have potent herbicidal activity against most mono- and di-cotyledonous plants, especially against Cyperus microiria STEUD, however, Oryza sativa showed strong resistance to herbimYcin.