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Ebooks on agriculture and the applied life sciences from CAB International
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The incidence of livestock congenital malformations has been estimated at 1-3% of all births and it has been speculated that 33% of all congenital malformations in livestock are induced by poisonous plants. This chapter describes some plants (including Veratrum, Solanum, Nicotiana, Astragalus,...
This chapter presents the results of a study conducted to determine the maximum tolerated dose of ground V. californicum root and the corresponding dose of cyclopamine that would not severely incapacitate the ewes or cause fetal death but still cause craniofacial malformations in the lambs. The...
The toxicity of larkspur (D. barbeyi) alkaloids in mixed-breed beef cows (used in the dose-response study) and black Angus steers (used in the toxicokinetic study) was investigated. Changes in heart rate and electromyography (EMG) response were detected at 24 h after the administration of dried...
This chapter presents a study aiming to identify the minimal doses that produce clinical locoism and better describe the lesions of locoweed (Astragalus mollissimus/Oxytropis sericea) poisoning in horses. Sixteen mature mares were randomly divided into 4 groups of 4 animals. The horses were...
The contributions of 7,8-methylenedioxylycoctonine (MDL)-type alkaloids on the overall toxicity of tall larkspur (Delphinium barbeyi) were evaluated. The effects of deltaline and 14-O-acetyldictyocarpine (14-OAD) on the toxicity of methyllycaconitine (MLA) in mice were assessed following...
The characteristic alkaloid profiles of L. sulphureus, L. leucophyllus and L. sericeus in northeastern Oregon and the Channel Scablands of east-central Washington, USA, were studied. Seven chemotypes were identified from the collections of L. sulphureus. Chemotype A collected near Ritzville,...
Field samples of D. occidentale populations (1464 plants representing 118 accessions) were collected in the summer of 2007 and 2008 throughout the geographical distribution of D. occidentale, including Utah, Idaho, Montana, Wyoming, Colorado, Nevada and Oregon, USA. These samples, along with 599...
This paper reviews the recent experiments designed for the further understanding of the CBF cold response pathways in Arabidopsis thaliana and tomato. The studies with Arabidopsis thaliana focus on determining the extent to which the CBF cold response pathway configures the low-temperature...