Equisetum is a small and morphologically distinct genus with a rich fossil record. Two subgenera have been recognized based principally on stomatal position and stem branching: subg. Equisetum (eight species; superficial stomates; stems branched) and subg. Hippochaete (seven species; sunken stomates; stems generally unbranched). Prior attempts at understanding Equisetum systematics, phylogeny, ...

Grapevine, a crop of global economic importance, is annually affected by diseases that can compromise the quality and quantity harvest, producing large losses. Downy mildew caused Plasmopara viticola (Berk. & M.A. Curtis) Berl. de Toni one most important in vineyard. To fight this pathogen, winegrowers often rely on conventional chemical fungicides or copper-based formulations, whose use de...

Snow cover is a key component in Arctic ecosystems and will likely be affected by changes winter precipitation. Increased snow depth consequent later snowmelt leads to greater microbial mineralization winter, improving soil vegetation nutrient status. We studied areas with naturally differing depths date of Adventdalen, Svalbard. Soil properties, plant leaf status, species composition along the...

In the work presented herein, we analyze efficacy of three basic substances that comply with European Regulation (EC) No 1107/2009, namely chitosan, horsetail (Equisetum arvense L.) and nettle (Urtica dioica L.), for control grapevine trunk diseases (GTDs) in organic farming. The E. U. aqueous extracts, prepared according to SANCO/12386/2013 SANTE/11809/2016, have been studied by gas chromatogr...

The family of horsetails (Equisetaceae) is characterized through their high content of silica (SiO2), which is the highest in known vascular plants. This work has focussed on two species of this family, Equisetum hyemale and Equisetum telmateia, where the biomorphous silica is deposited basically as amorphous SiO2 in the outer epidermis of the plants. As source of SiO2, the original plant mater...

As plantas medicinais e os fitoterápicos são amplamente utilizados no Brasil como alternativa terapêutica, principalmente por aqueles que estão em tratamento de doenças crônicas a obesidade dislipidemia, comuns presentes mulheres climatério. O objetivo desse trabalho foi realizar uma revisão integrativa para identificar espécies utilizadas terapia complementar o dislipidemias Para esse feita bi...