Results 81 to 90 of about 3,494 (200)

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

Cardenolides metabolism and genetic transformation of Digitalis. Potentialities and challenges

open access: yesBiotecnología Vegetal, 2010
Cardenolides are secondary metabolites produced by plants of the genus Digitalis. These are widely used in treatments of congestive heart failure. Failed attempts to obtain suitable cardenolide levels from in vitro culture of Digitalis plants have ...
Yovanny Izquierdo   +2 more
doaj  

Within‐plant variation in chemical defence of Erysimum cheiranthoides does not explain Plutella xylostella feeding preference

open access: yesPlant Biology, Volume 27, Issue 5, Page 861-872, August 2025.
Novel cardenolide defences co‐vary with other defences among leaves of Erysimum cheiranthoides, but while caterpillars avoid well‐defended leaves, cardenolides alone cannot explain herbivore behaviour. Abstract Plants invest a substantial fraction of their resources into defence against herbivores, with the highest levels of defence often allocated ...
K. Wang, T. Züst
wiley   +1 more source

ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]

open access: yes, 1987
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W.   +7 more
core   +1 more source

TAMARINDUS INDICA L. OR "ASAM JAWA" : The sour but Sweet and useful [PDF]

open access: yes, 2008
この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されまし
Soemardji AndreanusA.
core   +1 more source

Transforming Growth Factor‐β Pathway: Biological Functions and Therapeutic Targets

open access: yesMedComm, Volume 6, Issue 7, July 2025.
Natural compounds modulate the TGF‐β pathway, which acts as both a tumor suppressor and promoter during cancer progression. Agents such as ginsenosides, halofuginone, and EGCG influence cell proliferation, apoptosis, and angiogenesis. These bioactive molecules may complement standard therapies, highlighting the need for advanced formulations ...
Reham Hassan Mekky   +9 more
wiley   +1 more source

Poison, plants and Palaeolithic hunters. An analytical method to investigate the presence of plant poison on archaeological artefacts [PDF]

open access: yes, 2015
In this paper we present the development of a method for the detection of toxic substances on ancient arrow points. The aim is to go back in time until the Palaeolithic period in order to determine if poisonous substances were used to enhance the hunting
Christian C. Yde (1583899)   +5 more
core   +3 more sources

12β,14-Dihydroxy-3-oxo-5β,20(22)-cardenolide monohydrate

open access: yesActa Crystallographica Section E, 2010
The title compound, digoxigenone, C23H30O5·H2O, was biotransformed from digoxigenin. In the crystal, intermolecular O—H...O hydrogen bonds contribute to the formation of a three-dimensional supramolecular structure.
Chao-Jun He   +4 more
doaj   +1 more source

The impact of detoxification costs and predation risk on foraging : implications for mimicry dynamics [PDF]

open access: yes, 2017
This work was supported by the European Research Council (Advanced Grant 250209 to Alasdair Houston), a Natural Environment Research Council Independent Research Fellowship (NE/L011921/1) awarded to A.D.H., a BBSRC-NERC project grant (BB/G00188X/1 ...
Halpin, Christina G.   +4 more
core   +3 more sources

Cardiac Glycosides in Human Physiology and Disease: Update for Entomologists

open access: yesInsects, 2019
Cardiac glycosides, cardenolides and bufadienolides, are elaborated by several plant or animal species to prevent grazing or predation. Entomologists have characterized several insect species that have evolved the ability to sequester these glycosides in
Rif S. El-Mallakh   +2 more
doaj   +1 more source

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