Results 121 to 130 of about 435,947 (354)

A roadmap to key traits of invasive Drosophilidae

Biological Reviews, EarlyView.
ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non‐native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses.
Gwenaëlle Deconninck, Bréa Raynaud‐Berton, Méghan Boulembert, Olivier Chabrerie, Aude Couty, Franck Dedeine, Patrice Eslin, Vincent Foray, Romain Georges, Patricia Gibert, Laurence Mouton, Sylvain Pincebourde, David Renault, Christelle Suppo, Hervé Colinet   +14 more
wiley   +1 more source

Introductory Chapter: Alkaloids - Their Importance in Nature and for Human Life

The Alkaloids, 2019
In nature there are many natural compounds. From among many classes of naturally occurring organic compounds such as carbohydrates, lipids, proteins, amino acids, anthocyanins, flavonoids, and steroids, the one that seems to be quite special is alkaloids.
Joanna Kurek
semanticscholar   +1 more source

Fear of grazing rivals the toxin‐inducing effects of nutrients in two marine harmful algae – a meta‐analysis

Biological Reviews, EarlyView.
ABSTRACT One of the major subfields of chemical ecology is the study of toxins and how they mediate interactions between organisms. Toxins produced by harmful algae (phycotoxins) impact a wide variety of organisms connected to the marine food web. Significant research efforts have thus aimed to identify the ecological and evolutionary drivers behind ...
Milad Pourdanandeh, Erik Selander
wiley   +1 more source

Rapid assessment of the main economic value indicators in lupine flour samples using infrared spectroscopy

Труды по прикладной ботанике, генетике и селекции
Background. A calibration model has been developed for rapid assessment of economic value indicators (protein, oil, and quinolizidine alkaloid contents) in the seeds of narrowleaf lupine accessions from VIR using near-infrared spectroscopy, with the help
V. S. Popov, A. V. Salikova, I. N. Perchuk, N. G. Konkova, G. P. Egorova, M. A. Vishnyakova, T. V. Shelenga   +6 more
doaj   +1 more source

Simultaneous quantification of ten key Kratom alkaloids in Mitragyna speciosa leaf extracts and commercial products by ultra-performance liquid chromatography-tandem mass spectrometry.

Drug Testing and Analysis, 2019
Kratom (Mitragyna speciosa) is a psychoactive plant popular in the United States for the self-treatment of pain and opioid addiction. For standardization and quality control of raw and commercial kratom products, an ultra-performance liquid ...
Abhisheak Sharma, Shyam H Kamble, F. León, Nelson Jeng Yeou Chear, Tamara I. King, Erin C. Berthold, S. Ramanathan, C. McCurdy, B. Avery   +8 more
semanticscholar   +1 more source

Ecology and evolution of pyrazines in insects

Biological Reviews, EarlyView.
ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk, Niklas Wahlberg, Johanna Mappes   +2 more
wiley   +1 more source

Slim and scum: Natural products from land and sea [PDF]

, 2000
To a natural-products chemist, the term "natural products" does not refer to all compounds from natural sources, as the name might imply. It is specifically used to refer to compounds known as secondary metabolites, structurally complex molecules, often ...
Prinsep, Michèle R.
core   +1 more source

Total Synthesis of Aspidosperma and Strychnos Alkaloids through Indole Dearomatization.

Chemistry, 2019
Monoterpenoid indole alkaloids are the major class of tryptamine-derived alkaloids found in nature. Together with their structural complexity, this has attracted great interest from synthetic organic chemists.
Jordy M. Saya, Eelco Ruijter, R. Orru
semanticscholar   +1 more source

Loss, persistence and reversal of phenotypic traits

Biological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni, Giuseppe Fusco, Filippo Nicolini, Heather Bruce, Andrea Luchetti   +4 more
wiley   +1 more source

Profiling the Complexity of Resistance Factors in Cancer Cells Towards Berberine and Its Derivatives

Pharmaceuticals
Background: Berberine, a benzylisoquinoline alkaloid, has been traditionally used in Ayurvedic and Chinese medicine. We examined the resistance mechanisms to berberine in a panel of different cancer cells and focused on understanding its molecular ...
Nadire Özenver, Nadeen T. Ali, Rümeysa Yücer, Xiao Lei, Gerhard Bringmann, Thomas Efferth, Mona Dawood   +6 more
doaj   +1 more source