Results 41 to 50 of about 3,494 (200)

Notes on Shifting Distribution Patterns and Survival of Immature \u3ci\u3eDanaus Plexippus\u3c/i\u3e (Lepidoptera: Danaidae) on the Food Plant \u3ci\u3eAsclepias Syriaca\u3c/i\u3e [PDF]

open access: yes, 2017
Abundance and distribution of immature stages of the monarch butterfly, Danaus plexippus, on the food plant Asclepias syriaca were examined at a site in southeastern Wisconsin over one growing season.
Borkin, Susan Sullivan
core   +2 more sources

Cardiac glycosides isolated from the Indian-snuff, Maquira sclerophylla Ducke

open access: yesMemorias do Instituto Oswaldo Cruz, 1991
The hydroalcoholic extract of the powdered bark of the Indian-snuff Maquira sclerophylla Ducke was purified by column chromatography in silica-gel and the major cardenolide isolated from preparative TLC was identified by 1H-NMR, 1 2 C-NMR and IR analyses.
João Ernesto de Carvalho   +2 more
doaj   +1 more source

The alpha-synuclein 5'untranslated region targeted translation blockers: anti-alpha synuclein efficacy of cardiac glycosides and Posiphen [PDF]

open access: yes, 2011
Increased brain α-synuclein (SNCA) protein expression resulting from gene duplication and triplication can cause a familial form of Parkinson's disease (PD).
Bandyopadhyay, Sanghamitra   +9 more
core   +1 more source

A New Cytotoxic 19-Nor-cardenolide from the Latex of Antiaris toxicaria

open access: yesMolecules, 2009
A new nor-cardenolide, named toxicarioside H (1), was isolated from the latex of Antiaris toxicaria (Pers.) Lesch (Moraceae). Its structure was elucidated on the basis of HRFAB-MS and spectroscopic techniques (IR, UV, 1D and 2D NMR).
Wen-Li Mei   +5 more
doaj   +1 more source

A draft genome and transcriptome of common milkweed (Asclepias syriaca) as resources for evolutionary, ecological, and molecular studies in milkweeds and Apocynaceae [PDF]

open access: yesPeerJ, 2019
Milkweeds (Asclepias) are used in wide-ranging studies including floral development, pollination biology, plant-insect interactions and co-evolution, secondary metabolite chemistry, and rapid diversification.
Kevin Weitemier   +5 more
doaj   +2 more sources

Influence of auxin and its polar transport inhibitor on the development of somatic embryos in Digitalis trojana [PDF]

open access: yes, 2018
The present study reports the role of auxin and its transport inhibitor during the establishment of an efficient and optimized protocol for the somatic embryogenesis in Digitalis trojana Ivan.
A Kumar   +31 more
core   +1 more source

New CNS depressant cardenolide glycoside from the roots of Nerium oleander

open access: yesResults in Chemistry, 2020
A new central nervous system (CNS) depressant cardenolide glycoside named nerioleanderoside (1) was isolated from active n-butanol fraction of the aqueous- ethanolic (5:95 v/v) extract of the fresh dried roots of Nerium oleander.
Ghanshyam Tiwari   +3 more
doaj   +1 more source

Na,K-ATPase mediated and cardiotonic induced signaling in health and disease

open access: yesFrontiers in Physiology
In the late 1950’s, Na,K-ATPase (NKA) was discovered as the active transport system that establishes and maintains the transmembrane Na+ and K+ gradients necessary for cell survival and function. Almost 70 years later, a novel unexpected function for NKA
Jordan Trant   +3 more
doaj   +1 more source

Mycorrhizae Alter Toxin Sequestration and Performance of Two Specialist Herbivores

open access: yesFrontiers in Ecology and Evolution, 2018
Multitrophic species interactions are shaped by both top-down and bottom-up factors. Belowground symbionts of plants, such as arbuscular mycorrhizal fungi (AMF), can alter the strength of these forces by altering plant phenotype.
Amanda R. Meier, Mark D. Hunter
doaj   +1 more source

Evolutionary constraints in host shifts: Limited adaptation of Plutella xylostella to cardenolide‐defended Erysimum cheiranthoides

open access: yesFunctional Ecology, Volume 40, Issue 2, Page 501-516, February 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Coevolutionary arms races between plants and insects, in which gains of novel plant defences select for counteradaptations in herbivores, are key drivers of biodiversity.
Broti Biswas   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy