نتایج جستجو برای: leaf spotting pathogen

تعداد نتایج: 153226  

Journal: :Analytical biochemistry 2005
Erica D Dawson Amy E Reppert Kathy L Rowlen Laura R Kuck

Low-density microarrays that utilize short oligos (<100 nt) for capture are highly attractive for use in diagnostic applications, yet these experiments require strict quality control and meticulous reproducibility. However, a survey of current literature indicates vast inconsistencies in the spotting and processing procedures. In this study, spotting and processing protocols were optimized for ...

2017
O Rahul Patharkar Walter Gassmann John C Walker

Plants utilize an innate immune system to protect themselves from disease. While many molecular components of plant innate immunity resemble the innate immunity of animals, plants also have evolved a number of truly unique defense mechanisms, particularly at the physiological level. Plant's flexible developmental program allows them the unique ability to simply produce new organs as needed, aff...

2016
Rajesh K. Manhas Talwinder Kaur

Biocontrol agents and their bioactive metabolites provide one of the best alternatives to decrease the use of chemical pesticides. In light of this, the present investigation reports the biocontrol potential of Streptomyces hydrogenans DH16 and its metabolites towards Alternaria brassicicola, causal agent of black leaf spot and damping off of seedlings of crucifers. In vitro antibiosis of strai...

Journal: :Fungal biology 2012
Gary J Samuels Adnan Ismaiel Ade Rosmana Muhammad Junaid David Guest Peter McMahon Philip Keane Agus Purwantara Smilja Lambert Marianela Rodriguez-Carres Marc A Cubeta

Vascular Streak Dieback (VSD) disease of cacao (Theobroma cacao) in Southeast Asia and Melanesia is caused by a basidiomycete (Ceratobasidiales) fungus Oncobasidium theobromae (syn. =Thanatephorus theobromae). The most characteristic symptoms of the disease are green-spotted leaf chlorosis or, commonly since about 2004, necrotic blotches, followed by senescence of leaves beginning on the second...

Journal: :Canadian journal of microbiology 2007
A Mark Ibekwe Catherine M Grieve Ching-Hong Yang

Long-term survival of Escherichia coli O157:H7 in soil and in the rhizosphere of many crops after fumigation is relatively unknown. One of the critical concerns with food safety is the transfer of pathogens from contaminated soil to the edible portion of the plants. Multiplex fluorogenic polymerase chain reaction was used in conjunction with plate counts to quantify the survival of E. coli O157...

Journal: :FEMS microbiology ecology 2016
Markus Schlegel Vivanne Dubach Larissa von Buol Thomas N Sieber

While Hymenoscyphus fraxineus causes dieback of the European ash (Fraxinus excelsior), flowering ash (F. ornus) appears resistant to the pathogen. To date, contributions of endophytic fungi to host resistance are unknown. The following hypotheses were tested: (i) endophytic fungi enhance the resistance of F. excelsior to the pathogen; (ii) resistance of F. ornus relies on its community of endop...

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