Results 51 to 60 of about 5,587 (239)

Phylogenetic escalation and decline of plant defense strategies [PDF]

open access: yes, 2008
As the basal resource in most food webs, plants have evolved myriad strategies to battle consumption by herbivores. Over the past 50 years, plant defense theories have been formulated to explain the remarkable variation in abundance, distribution, and ...
Agrawal, Anurag A., Fishbein, Mark
core   +2 more sources

Endophytic fungi from Nerium oleander L (Apocynaceae): Main constituents and antioxidant activity [PDF]

open access: yes, 2007
Diverse endophytic fungi exist within plant aerial tissues, with a global estimate of up to a million undescribed species. These endophytes constitute a rich bio-resource for exploration to discover new natural products.
Cai, YZ   +4 more
core   +1 more source

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

Secondary metabolites from Calotropis procera (Aiton) [PDF]

open access: yes, 2010
Three new metabolites, 5-hydroxy-3,7-dimethoxyflavone-4′-O-β-glucopyranoside (1), 2β,19-epoxy-3β,14β-dihydroxy-19-methoxy-5α-card-20(22)-enolide (4) and β-anhydroepidigitoxigenin-3β-O-glucopyranoside (5), along with two known compounds, uzarigenine (2 ...
Imhoff, Johannes F.   +4 more
core   +1 more source

Ouabain‐induced hypertension in rats: Mechanisms, variability and translational implications

open access: yesExperimental Physiology, EarlyView.
Abstract Ouabain‐induced hypertension is a multifactorial and condition‐dependent phenomenon involving coordinated actions across vascular, renal and central nervous system pathways. At the vascular level, ouabain inhibits Na⁺/K⁺‐ATPase, particularly the α2‐isoform, leading to elevated intracellular Ca2⁺, enhanced vasoconstriction and structural ...
Priscilla Rodrigues O. Feijó   +1 more
wiley   +1 more source

Pro-Apoptotic and Pro-Autophagic Properties of Cardenolides from Aerial Parts of Pergularia tomentosa

open access: yesMolecules, 2022
Pergularia tomentosa L., a milkweed tropical plant belonging to the family Asclepiadaceae, is a rich source of unusual cardiac glycosides, characterised by transfused A/B rings and a sugar moiety linked by a double link, generating a dioxanoid structure.
Stefania Martucciello   +8 more
doaj   +1 more source

Insect Phylogenetics: A Guided Tour of Insect Evolution [PDF]

open access: yes, 2019
Interview with Dr.
Colbert, Matthew   +5 more
core  

Applications of Chitosan, an Eco‐Friendly Biopolymer in Agricultural Systems, Herbal Products, and Functional Foods: A Review

open access: yesFood Science &Nutrition, Volume 14, Issue 1, January 2026.
Chitosan is highlighted for its industrial applications include food processing and preservation, pharmaceuticals, agriculture systems, and environmental protection. ABSTRACT Chitin, the natural biopolymer of the world next to cellulose, is a modified biodegradable polysaccharide.
Saeedeh Karimlar   +4 more
wiley   +1 more source

Interspecific variation and elevated CO2 influence the relationship between plant chemical resistance and regrowth tolerance

open access: yesEcology and Evolution, 2020
To understand how comprehensive plant defense phenotypes will respond to global change, we investigated the legacy effects of elevated CO2 on the relationships between chemical resistance (constitutive and induced via mechanical damage) and regrowth ...
Leslie E. Decker, Mark D. Hunter
doaj   +1 more source

Complex engineering of Solanum alkaloids structural diversity in Nicotiana benthamiana

open access: yesPlant Biotechnology Journal, Volume 24, Issue 1, Page 328-345, January 2026.
Summary Transient expression in Nicotiana benthamiana offers a powerful and versatile platform for rapid production of complex specialized metabolites. Steroidal glycoalkaloids (SGAs) and steroidal saponins produced by members of the Solanaceae family are known for their diverse structures and activities including antimicrobial, anticancer, antiviral ...
Sachin A. Gharat   +6 more
wiley   +1 more source

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