نتایج جستجو برای: biocontrol

تعداد نتایج: 5526  

2016
Martina Cappelletti Michele Perazzolli Livio Antonielli Andrea Nesler Esmeralda Torboli Pier L. Bianchedi Massimo Pindo Gerardo Puopolo Ilaria Pertot

Protein derivatives and carbohydrates can stimulate plant growth, increase stress tolerance, and activate plant defense mechanisms. However, these molecules can also act as a nutritional substrate for microbial communities living on the plant phyllosphere and possibly affect their biocontrol activity against pathogens. We investigated the mechanisms of action of a protein derivative (nutrient b...

2016
Jin-Lian Chen Shi-Zhong Sun Cui-Ping Miao Kai Wu You-Wei Chen Li-Hua Xu Hui-Lin Guan Li-Xing Zhao

BACKGROUND Biocontrol agents are regarded as promising and environmental friendly approaches as agrochemicals for phytodiseases that cause serious environmental and health problems. Trichoderma species have been widely used in suppression of soil-borne pathogens. In this study, an endophytic fungus, Trichoderma gamsii YIM PH30019, from healthy Panax notoginseng root was investigated for its bio...

2001
ROBERT H. COWIE

The use of snails as biocontrol agents against other snails and against aquatic weeds is reviewed, evaluating their success and their impacts on non-target organisms. The predatory snail Euglandina rosea (and other species), although widely used against Achatina fulica (the giant African land snail) on Pacific and Indian Ocean islands, has not been shown to control A. fulica but has seriously i...

Journal: :Acta biochimica Polonica 2007
Krzysztofa Nagórska Mariusz Bikowski Michał Obuchowski

Intensive cultivation of plants in the monoculture field system in order to feed the continuously growing human population creates a need for their protection from the variety of natural competitors such as: bacteria, fungi, insects as well as other plants. The increase in the use of chemical substances in the 20th century has brought many effective solutions for the agriculture. However, it wa...

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2010
Thomas Paternoster Geneviève Défago Brion Duffy Cesare Gessler Ilaria Pertot

This work describes a medium-based screening method for selecting microbial biocontrol agents against Erwinia amylovora based on the degradation of a specific growth factor. Erwinia amylovora, the causal agent of the devastating fire blight disease, requires nicotinic acid or nicotinamide as an essential growth factor. Potential biocontrol agents are either selected for antimicrobial production...

2005
Anthony Caesar

Early research leading to the successful biological control of invasive species such as Opuntia spp., and Hypericum perforatum set examples and provided data useful for research programs that would follow. However, this early work failed to become established as a source of applicable principles for later workers in weed biocontrol. Recently, retrospective and parallel studies have been suggest...

2017
Caroline L Gross Joshua D Whitehead Camila Silveira de Souza David Mackay

The extent of self-compatibility and reliance on pollinators for seed set are critical determinants of reproductive success in invasive plant species. Seed herbivores are commonly used as biocontrol agents but may also act as flower visitors, potentially resulting in pollination. However, such contrasting or potentially counterproductive interaction effects are rarely considered or evaluated fo...

2005
Donald E. Gardner

Several examples, some spectacular, are available of successful applications of weed biocontrol approaches with plant pathogenic agents in agricultural and rangeland situations. The overall percentage rate of success of all such programs attempted cannot yet be documented, however. Both the "mycoherbicide" method, in which large quantities of inoculum are directly applied to target plants, and ...

2011
Theo H. M. Smits Fabio Rezzonico Tim Kamber Jochen Blom Alexander Goesmann Carol A. Ishimaru Jürg E. Frey Virginia O. Stockwell Brion Duffy

BACKGROUND Pantoea vagans is a commercialized biological control agent used against the pome fruit bacterial disease fire blight, caused by Erwinia amylovora. Compared to other biocontrol agents, relatively little is currently known regarding Pantoea genetics. Better understanding of antagonist mechanisms of action and ecological fitness is critical to improving efficacy. PRINCIPAL FINDINGS G...

Journal: :Yeast 2010
W J Janisiewicz C P Kurtzman J S Buyer

Resident fruit microflora has been the source of biocontrol agents for the control of postharvest decay of fruits and the active ingredient in commercialized biocontrol products. With the exception of grapes and apples, information on the resident microflora of other fruits is only fragmentary, but greater knowledge in this area can be very helpful in developing biocontrol strategies. We charac...

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