نتایج جستجو برای: plant groups

تعداد نتایج: 1099878  

Journal: :The Journal of animal ecology 2008
Juliane Specht Christoph Scherber Sybille B Unsicker Günter Köhler Wolfgang W Weisser

1. Recent biodiversity studies have addressed various community-level effects of biodiversity change, but the number of studies on specific biotic interactions is still rather limited. An open question in the context of plant-insect-herbivore relationships is how diversity impacts the population ecology of individual species. 2. In the present study, we explored the relationship between plant s...

2007
Kirk W. Davies Monica L. Pokorny Roger L. Sheley Jeremy J. James

High plant functional group diversity has been hypothesized to reduce resource concentrations based on the assumption that species from one functional group acquire resources similarly to one another, while species from other functional groups acquire resources dissimilarly. To determine if functional groups use soil nutrients different from one another, we investigated the impact of removing i...

2017
Wycliff M Kinoti Fiona E Constable Narelle Nancarrow Kim M Plummer Brendan Rodoni

PCR amplicon next generation sequencing (NGS) analysis offers a broadly applicable and targeted approach to detect populations of both high- or low-frequency virus variants in one or more plant samples. In this study, amplicon NGS was used to explore the diversity of the tripartite genome virus, Prunus necrotic ringspot virus (PNRSV) from 53 PNRSV-infected trees using amplicons from conserved g...

2013
Abebe G. Demissie

Parthenium (Parthenium hysterophorus L.) has become an invasive woody plant in recent times in many part of the world affecting the agricultural productivity. Hence we carried out to evaluate the effect of P. hysterophorus on germination and elongation of Onion (Allium cepa) and Bean (Phaseolus vulgaris). The plant extract prepared by the extractions of 1,2,4,8, and 16 gram powder in a 400ml of...

2016
Lionel R. Hertzog Sebastian T. Meyer Wolfgang W. Weisser Anne Ebeling Han Y.H. Chen

Changes in producer diversity cause multiple changes in consumer communities through various mechanisms. However, past analyses investigating the relationship between plant diversity and arthropod consumers focused only on few aspects of arthropod diversity, e.g. species richness and abundance. Yet, shifts in understudied facets of arthropod diversity like relative abundances or species dominan...

2010
Yunseop Kim Johnny Park Henry K. Ngugi Brian L. Lehman

Plant stress significantly reduces plant productivity. Automated on-the-go mapping of plant stress allows for timely intervention and mitigation of the problem before critical thresholds are exceeded, thereby maximizing productivity. A hyperspectral camera analyzed the spectral signature of plant leaves to identify the plant water stress. Five different levels of water treatment were created on...

Journal: :Vaccine 2011
Jyotsna Gorantala Sonam Grover Divya Goel Amit Rahi Sri Krishna Jayadev Magani Subhash Chandra Rakesh Bhatnagar

The currently available anthrax vaccines are limited by being incompletely characterized, potentially reactogenic and have an expanded dosage schedule. Plant based vaccines offer safe alternative for vaccine production. In the present study, we expressed domain IV of Bacillus anthracis protective antigen gene [PA(dIV)] in planta (by nuclear agrobacterium and chloroplast transformation) and E. c...

Journal: :Polish journal of veterinary sciences 2011
R Szabóová A Lauková L Chrastinová V Strompfová M Pogány Simonová Z Vasilková K Cobanová I Plachá M Chrenková

Enterocin (Ent) 4231, produced by non-rabbit origin strain Enterococcus faecium CCM 4231 was used in combination with sage plant extract in rabbits with the aim to check their antimicrobial activity against microbiota, their effect on immunological, biochemical blood parameters, values of volatile fatty acids in caecum, Eimeria sp. oocysts occurrence and selected parameters of rabbits meat. The...

Journal: :Indian journal of experimental biology 2010
Chandana C Barua Archana Talukdar Shameem A Begum Lalit C Lahon Dilip K Sarma Debesh C Pathak Probodh Borah

Antinociceptive activity of methanolic extract of leaves of A. aspera was studied by peripheral/non-narcotic model of nociception like acetic acid induced writhing syndrome test and central/narcotic models like hot plate and tail flick tests. The methanolic extract of the plant, administered orally (@ 300, 600 and 900 mg/kg, body weight) and the standard drug (piroxicam; 10 mg/kg body weight, p...

2005
Joshua H. NESS

Deserts are open environments characterized by striking shifts in temperature and light regimes. We hypothesized that the abiotic environment mediates the interaction between an ant-dispersed plant, Datura wrightii (Solanaceae), ant mutualists, and rodent seed predators in the Sonoran Desert. Field experiments contrasting diurnal and nocturnal seed collection rates in the presence of ants only,...

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