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Inoculation with antagonistic soil microorganisms has shown potential to suppress replant disease of apple in orchard soils. Pseudomonas spp. may have potential to reduce Pratylenchus penetrans populations on apple. Pseudomonas spp. were isolated from the rhizosphere of sweet cherry, screened for antagonistic characteristics, and two highly antagonistic Pseudomonas isolates, P10-32 and P10-42, were evaluated for growth promotion of apple seedlings, suppression of P. penetrans populations, and root colonization in soil from three orchards. During the isolate screening, P. fluorescens P10-32 reduced in vitro growth of fungal pathogens, had protease activity, capacity to produce pyrrolnitrin, suppressed P. penetrans populations, and increased plant biomass. P. fluorescens P10-42 reduced in vitro growth of fungal pathogens, had protease activity, suppressed P. penetrans populations, and increased plant biomass. In potted orchard soil, inoculating apple with P. fluorescens P10-32 suppressed P. penetrans populations in one of the three soils examined. Inoculation with P. fluorescens P10-42 improved plant growth in two of the soils, and suppressed P. penetrans abundance in one soil. In one of the soils, P. fluorescens P10-42 was detected on the roots 56 days post-inoculation. Overall, we conclude that Pseudomonas spp. play a role in suppressing P. penetrans on apple in orchard soil.
This article was published in the following journal.
Name: Canadian journal of microbiology
Coffee yields are adversely affected by plant-parasitic nematodes and the pathogens are largely under-reported because a simple and reliable identification method is not available. We describe a PCR-b...
The Apple-Juniper rust, , is an economically important pathogen of apples and junipers in Asia. The absence of markers has hampered the study of the genetic diversity of this widespread pathogen. In o...
Many root-colonizing microbes are multifaceted in traits that improve plant health. Although isolates designated as biological control agents directly reduce pathogen growth, many exert additional ben...
The resistance levels to glyphosate and target-site based resistance mechanisms in susceptible (S) and resistant (R) Conyza canadensis (L.) populations, which were collected from apple orchards around...
Mucins are highly glycosylated polypeptides involved in many host parasite interactions, but their function in plant-parasitic nematodes is still unknown. In this study, a mucin-like gene was cloned f...
The main purpose of this study is to determine the oral bioavailability of flavanols (polyphenolic compounds) from apple granules and an apple extract delivered in a water based beverage ...
A randomised three period cross over trial will be carried out in adults (19-64 years) to assess the acute and chronic effects of a large dose of apple procyanidin (PA) compared with a low...
Elderly people often suffer from chronic pathologies and they are given polypharmacy. In case of swallowing problems, the drugs are crushed and mixed in food, which alters the taste of foo...
Apple polyphenols are mostly acknowledged for their hypoglycaemic properties, but represent an apple active fraction with many pharmacological functions. The study aim was to examine their...
Postprandial hyperglycaemia can lead to adverse modifications to functional proteins within the body and eventually lead to the development of type 2 diabetes. Previous research by this gr...
An infestation with the flea TUNGA PENETRANS causing inflammation, pruritus, and pain, in both humans and other mammals. There is a high incidence of secondary infections such as BACTEREMIA and TETANUS.
Molecules or ions formed by the incomplete one-electron reduction of oxygen. These reactive oxygen intermediates include SINGLET OXYGEN; SUPEROXIDES; PEROXIDES; HYDROXYL RADICAL; and HYPOCHLOROUS ACID. They contribute to the microbicidal activity of PHAGOCYTES, regulation of signal transduction and gene expression, and the oxidative damage to NUCLEIC ACIDS; PROTEINS; and LIPIDS.
A class of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and esophageal structures. Many species are parasites.
The occurrence in an individual of two or more cell populations of different chromosomal constitutions, derived from different individuals. This contrasts with MOSAICISM in which the different cell populations are derived from a single individual.
The occurrence in an individual of two or more cell populations of different chromosomal constitutions, derived from a single ZYGOTE, as opposed to CHIMERISM in which the different cell populations are derived from more than one zygote.