Results 71 to 80 of about 52,814 (284)

Is the endophyte‐based plant protection against aphids mediated by changes in the insect microbiome?

Insect Science, EarlyView.
We showed that the fungal endophyte Epichloë strain AR37 increased the plant resistance against aphids via the production of indole diterpene alkaloids. The reduction in aphid performance was not associated with changes in abundance/composition/diversity of the insect's bacterial microbiota, but additional endophyte effects on this microbiota cannot be
Daniel A. Bastías, Luis Carvalho, Ruy Jáuregui, Richard D. Johnson, Wei Zhang, Pedro E. Gundel   +5 more
wiley   +1 more source

Phytochemical and pharmacological investigation of Spiraea chamaedryfolia: a contribution to the chemotaxonomy of Spiraea genus

BMC Research Notes, 2017
Objective Diterpene alkaloids are secondary plant metabolites and chemotaxonomical markers with a strong biological activity. These compounds are characteristic for the Ranunculaceae family, while their occurrence in other taxa is rare.
Tivadar Kiss, Kristóf Bence Cank, Orsolya Orbán-Gyapai, Erika Liktor-Busa, Zoltán Péter Zomborszki, Santa Rutkovska, Irēna Pučka, Anikó Németh, Dezső Csupor   +8 more
doaj   +1 more source

Expanding the substrate scope of a bacterial monoterpene synthase for the production of sesquiterpenoid and diterpenoid products

The FEBS Journal, EarlyView.
We have converted the only known true bacterial monoterpene synthase, cineole synthase from Streptomyces clavuligerus (bCinS, C10 substrate), to a highly competent sesquiterpene synthase (C15) with a minimum number of rational mutations. By comparison with diterpene synthases (C20), we were then able to bestow diterpene synthase activity on bCinS. This
Nicole G. H. Leferink, Joshua N. Whitehead, Linus O. Johannissen, Nigel S. Scrutton   +3 more
wiley   +1 more source

Why do Euphorbiaceae tick as medicinal plants? : a review of Euphorbiaceae family and its medicinal features [PDF]

, 2011
Euphorbiaceae is among the large flowering plant families consisting of a wide variety of vegetative forms some of which are plants of great importance. Its classification and chemistry have of late been subjects of interest possibly because of the wide ...
Mwine, Tedson Julius, Van Damme, Patrick
core  

Copaiba Oil–Resin Reduces the Alveolar Bone Damage Triggered by Apical Periodontitis in Rats

International Endodontic Journal, EarlyView.
ABSTRACT Aim This study aimed to investigate the effects of copaiba oil–resin on induced apical periodontitis in rats. Methodology A total of 24 male Wistar rats were divided equally into three groups (eight animals each): control (C), apical periodontitis (AP) and apical periodontitis with copaiba administration (AP + COP).
Rayssa Maitê Farias Nazário, Deborah Ribeiro Frazão, Leonardo Oliveira Bittencourt, Victoria Santos Chemelo, José Mário Matos‐Sousa, Beatriz Rodrigues Risuenho Peinado, Roberta Souza D’almeida Couto, Osmar Alves Lameira, João Daniel Mendonça de Moura, Jorddy Neves Cruz, Fabrício Mezzomo Collares, Rafael Rodrigues Lima   +11 more
wiley   +1 more source

Synthesis and Study of the Structure–Activity Relationship of Antiproliferative N-Substituted Isosteviol-Based 1,3-Aminoalcohols

Pharmaceuticals
Starting from isosteviol, a series of diterpenoid 1,3-aminoalcohol derivatives were prepared via stereoselective transformations. The acid-catalysed hydrolysis and rearrangement of natural stevioside produced isosteviol, which was transformed into the ...
Dániel Ozsvár, Noémi Bózsity, István Zupkó, Zsolt Szakonyi   +3 more
doaj   +1 more source

The adenylate cyclase receptor complex and aqueous humor formation. [PDF]

, 1984
The secretory tissue of the eye, the ciliary processes, contains an enzyme receptor complex, composed of membrane proteins, the catalytic moiety of the enzyme adenylate cyclase, a guanyl nucleotide regulatory protein (or N protein), and other features ...
Caprioli, J, Sears, M
core   +1 more source

Reporter constructs with low background activity utilizing the cat gene [PDF]

, 1992
Reporter plasmids utilizing the cat gene for the analysis of promoter and enhancer sequences in vertebrate cells, were constructed. These plasmids minimize the background of transcription derived from cryptic promoters or cryptic regulatory elements ...
Andrea Schmidt, Boshart, Bruno Luckow, Buchman, Günther Schütz, Heard, Luckow, Michael Boshart, Michael Klüppel, Ruppert, Schüle, Seamon   +11 more
core   +1 more source

Heterogeneity of iridoid biosynthesis in catmints: Molecular background in a phylogenetic context

Journal of Integrative Plant Biology, EarlyView.
Evolutionary gains and losses of key biosynthetic genes likely resulting from multiple independent evolutionary events explain why certain Nepeta (catnip) species produce both the active, cat‐attracting nepetalactones and sugar‐bound iridoids, while others make only the sugar‐bound forms, and some have lost iridoid production entirely.
Tijana Banjanac, Milica Milutinović, Dragana Matekalo, Neda Popović, Luka Petrović, Uroš Gašić, Marijana Skorić, Branislav Šiler, Tamara Lukić, Ana Stupar, Slavica Dmitrović, Jasmina Nestorović Živković, Biljana Filipović, Jelena Božunović, Miloš Todorović, Danijela Mišić   +15 more
wiley   +1 more source

A Review of Sponge-Derived Diterpenes: 2009–2022

Marine Drugs
Sponges are a vital source of pharmaceutically active secondary metabolites, of which the main structural types are alkaloids and terpenoids. Many of these compounds exhibit biological activities.
Jinmei Xia, Xiangwei Chen, Guangyu Li, Peng Qiu, Weiyi Wang, Zongze Shao   +5 more
doaj   +1 more source