When plants are introduced into new regions, the absence of their co-evolved natural enemies can result in lower levels of attack. As a consequence of this reduction in enemy pressure, plant performance may increase and selection for resistance to enemies may decrease. In the present study, we compared leaf damage, plant size and leaf trichome density, as well as the direction and magnitude of ...

Spodoptera frugiperda is a pest of worldwide importance, responsible for significant economic losses, mainly in maize crops. The use botanical derivatives emerges as promising alternative to control this insect pest. In work, we evaluated the effect ethanolic extracts (EE) and semi-purified fractions Acnistus arborescens Datura stramonium (Solanaceae) on biological development S. effects feedin...

Datura stramonium is a common plant found all over Nepal. It contains alkaloids like atropine, hyoscyamine and scopolamine which can produce severe anti-cholinergic effects upon intoxication. mostly consumed during Mahashivaratri as means of recreation sacred blessing from lord Shiva. We would to present case accidental poisoning in children by consuming food mixed with D. Mahashivaratri. Caref...

the chemical nature of secretion by the stigma and transmitting tissue in datura stramoniumwas studied by light microscopy using sudan black b, coomasie brilliant blue (cbb), toluidine blue,safranin, and pas. the stigmatic secretion reacted positively for lipids. during development, stigmaticcells became separated and intracellular lipids were transferred to intercellular spaces where theygradu...

Putrescine N-methyltransferases (PMTs) are the first specific enzymes of the biosynthesis of nicotine and tropane alkaloids. PMTs transfer a methyl group onto the diamine putrescine from S-adenosyl-l-methionine (SAM) as coenzyme. PMT proteins have presumably evolved from spermidine synthases (SPDSs), which are ubiquitous enzymes of polyamine metabolism. SPDSs use decarboxylated SAM as coenzyme ...

Avirulent genes either directly or indirectly produce elicitors that are recognized by specific receptors of plant resistance genes, leading to the induction of host defense responses such as hypersensitive reaction (HR). HR is characterized by the development of a necrotic lesion at the site of infection which results in confinement of the invader to this area. Artificial chimeras and mutants ...