نتایج جستجو برای: timothy grass

تعداد نتایج: 24127  

2014
Jennifer M. Albertine William J. Manning Michelle DaCosta Kristina A. Stinson Michael L. Muilenberg Christine A. Rogers

One expected effect of climate change on human health is increasing allergic and asthmatic symptoms through changes in pollen biology. Allergic diseases have a large impact on human health globally, with 10-30% of the population affected by allergic rhinitis and more than 300 million affected by asthma. Pollen from grass species, which are highly allergenic and occur worldwide, elicits allergic...

Journal: :American journal of epidemiology 1998
C C Johnson E L Peterson D R Ownby

While serum immunoglobulin E (IgE) concentration has been shown to be related to allergic disease, there have been few studies of the natural history of IgE development in young children. This study compared total and allergen-specific serum IgE concentrations, by gender, from birth through 4 years of age using a population-based cohort of normal children followed from 1987 to 1993. Subjects we...

2000
D. R. WOODFIELD J. R. CARADUS

Better persistence and reliability of white clover (Trifolium repens L.) is critical in achieving a more competitive New Zealand farming industry. To persist, white clover must establish well and withstand the accumulated stresses of competition from associated grasses, grazing, variable soil fertility, drought, plus pest and disease pressure. These factors vary markedly with environment and fa...

Journal: :Frontiers in plant science 2016
François Gagné-Bourque Annick Bertrand Annie Claessens Konstantinos A. Aliferis Suha Jabaji

Drought is a major limiting factor of crop productivity worldwide and its incidence is predicted to increase under climate change. Drought adaptation of cool-season grasses is thus a major challenge to secure the agricultural productivity under current and future climate conditions. Endophytes are non-pathogenic plant-associated bacteria that can play an important role in conferring resistance ...

Journal: :Environmental entomology 2010
Dominic D Reisig Larry D Godfrey Daniel B Marcum

Sampling studies were conducted on grass thrips, Anaphothrips obscurus (Müller) (Thysanoptera: Thripidae), in timothy, Phleum pratense L. These studies were used to compare the occurrence of brachypterous and macropterous thrips across sampling methods, seasons, and time of day. Information about the population dynamics of this thrips was also revealed. Three absolute and two relative methods ...

Journal: :Journal of animal science 1995
P Schofield A N Pell

The fermentation of the neutral detergent-soluble (NDS) fraction of two legumes (clover, alfalfa) and two grasses (timothy, guinea grass) was measured using a curve subtraction technique with in vitro gas production data from the whole forage and the isolated neutral detergent-extracted fiber. The NDF disappearance and VFA production also were measured. There were no significant differences bet...

Journal: :Journal of immunology 2010
Carla Oseroff John Sidney Maya F Kotturi Ravi Kolla Rafeul Alam David H Broide Stephen I Wasserman Daniela Weiskopf Denise M McKinney Jo L Chung Arnd Petersen Howard Grey Bjoern Peters Alessandro Sette

We investigated the molecular determinants of allergen-derived T cell epitopes in humans utilizing the Phleum pratense (Timothy grass) allergens (Phl p). PBMCs from allergic individuals were tested in ELISPOT assays with overlapping peptides spanning known Phl p allergens. A total of 43 distinct antigenic regions were recognized, illustrating the large breadth of grass-specific T cell epitopes....

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