Phytochemistry

Journal: Phytochemistry

Abbreviation

Phytochemistry

Publisher

Elsevier

ISSN

0031-9422
1873-3700

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Publications 1 - 10 of 15

α-Pinene: A never-ending story
Allenspach, Martina; Steuer, Christian (2021)
Phytochemistry
α-Pinene represents a member of the monoterpene class and is highly distributed in higher plants like conifers, Juniper ssp. and Cannabis ssp. α-Pinene has been used to treat respiratory tract infections for centuries. Furthermore, it plays a crucial role in the fragrance and flavor industry. In vitro assays have shown an enantioselective profile of (+)- and (−)-α-pinene for antibacterial and insecticidal activity, respectively. Recent research has used pre-validated biological structures to synthesize new chemical entities with pharmacological and herbicidal activities. In summary, this review focuses on recent literature covering synthetic pathways of flavor compounds and scaffold hopping based on the α-pinene core domaine, as well as the (enantioselective) activities of α-pinene. Recent approaches for authenticity control of essential oils based on their enantiomeric profile are also presented.
Defensive strategies in Geranium sylvaticum. Part 1: Organ-specific distribution of water-soluble tannins, flavonoids and phenolic acids
Tuominen, A.; Toivonen, E.; Mutikainen, P.; et al. (2013)
Phytochemistry
High speed X-ray analysis of plant enzymes at room temperature
Xia, L. Q.; Rajendran, C.; Ruppert, M.; et al. (2013)
Phytochemistry
Structure, anti-Phytophthora and anti-tumor activities of a nortriterpenoid from the rhizome of Phlomis purpurea (Lamiaceae)
Mateus, Maria C.; Neves, Dina; Dacunha, Bruno; et al. (2016)
Phytochemistry
Inhibitors of phenylalanine ammonia-lyase
Miziak, Piotr; Zoń, Jerzy; Amrhein, Nikolaus; et al. (2007)
Phytochemistry
The prediction of isotopic patterns in phenylpropanoids from their precursors and the mechanism of the NIH-shift
Schmidt, Hanns-Ludwig; Werner, Roland A.; Eisenreich, Wolfgang; et al. (2006)
Phytochemistry
Acylated flavonoid and phenylethanoid glycosides from Marrubium velutinum
Karioti, Anastasia; Skaltsa, Helen; Heilmann, Jörg; et al. (2003)
Phytochemistry
What pollinators see does not match what they smell: Absence of color-fragrance association in the deceptive orchid Ionopsis utricularioides
Aguiar, João M.; de Souza Ferreira, Gabriel; Sanches, Patricia A.; et al. (2021)
Phytochemistry
Many deceptive orchids present variation in floral color and fragrance. This might be advantageous for the plant, as it can disturb the associative avoidance learning of pollinators, promoting more visits to the flowers. Some studies have shown that color and fragrance can be correlated in polymorphic deceptive orchids, but these studies employed color traits based on the human visual system and not the visual perception of pollinators. Thus, we investigated the composition of the floral fragrance of Ionopsis utricularioides (Sw.) Lindl., a polymorphic deceptive orchid, and analyzed possible correlations with the floral color as seen by bees, Apis mellifera L. and Melipona quadrifasciata Lepeletier, using the color hexagon model. We found high color and fragrance intraspecific variation, as expected for deceptive species. However, we found no color-fragrance association in individuals, either by comparing fragrance profiles with the color variable saturation or by comparing them with the placement of individuals in the color hexagon for both bee species. This lack of correlation contradicts the biochemical pathway hypothesis, which proposes that associations between floral color and scent in polymorphic flowers arise from shared biochemical pathways. However, a complete absence of correlation between floral signals is consistent with selection arising through pollinator cognitive ecology. Lack of correlation would increase the floral variability perceived by bees, given their multimodal learning, and this variability could disrupt avoidance learning of deceptive flowers, thus enhancing the efficacy of the plant's deceptive pollination mechanism. © 2020 Elsevier
How rainfall, relative humidity and temperature influence volatile emissions from apple trees in situ
Vallat, Armelle; Gu, Hainan; Dorn, Silvia (2005)
Phytochemistry
Biosynthesis of gallic acid in Rhus typhina: discrimination between alternative pathways from natural oxygen isotope abundance
Werner, Roland A.; Rossmann, Andreas; Schwarz, Christine; et al. (2004)
Phytochemistry

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Journal: Phytochemistry

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