Results 51 to 60 of about 49,439 (316)

The complete chloroplast genome sequence of monotypic Cyphotheca (Melastomataceae), an endemic genus in China

open access: yesMitochondrial DNA. Part B. Resources, 2019
Cyphotheca, a shrub narrowly endemic to Yunnan, southwest China, is a monotypic genus of Sonerileae in Melastomataceae. The species, Cyphotheca montana, is dwindling and is listed as ‘Near Threatened (NT)’ by IUCN Red List of China. Herein, we report the
Zhenying Wen   +4 more
doaj   +1 more source

Bark water storage capacity influences epiphytic orchid preference for host trees.

open access: yesAmerican-Eurasian journal of botany, 2020
PREMISE Of all orchid species described, 70% live on phorophytes. Trees offer a vital space with characteristics that influence the successful establishment and life cycle of orchids.
Angel M Zarate-García   +5 more
semanticscholar   +1 more source

Bispyrrolidinoindoline Epi(poly)thiodioxopiperazines (BPI-ETPs) and Simplified Mimetics: Structural Characterization, Bioactivities, and Total Synthesis

open access: yesMolecules, 2022
Within the 2,5-dioxopiperazine-containing natural products generated by “head-to-tail” cyclization of peptides, those derived from tryptophan allow further structural diversification due to the rich chemical reactivity of the indole heterocycle, which ...
Claudio Martínez   +3 more
doaj   +1 more source

The Fertilisation of Orchids [PDF]

open access: yesNature, 1877
WHILE botanising this spring in Portugal, I was struck with the fact that scarcely one of the orchids—species of Ophrys principally—that I had collected for my herbarium, or examined in the field, seemed to be fertilised, for none presented the least indication of having had pollen applied to its stigmatic surface; and I examined flowers in every stage
openaire   +2 more sources

AInsectID Version 1.1: An Insect Species Identification Software Based on the Transfer Learning of Deep Convolutional Neural Networks

open access: yesAdvanced Intelligent Discovery, EarlyView.
This paper describes the basis for AInsectID Version 1, a GUI‐operable open‐source insect species identification, color processing, and image analysis software. This paper discusses our methods of algorithmic development, coupled to rigorous machine training used to enable high levels of validation accuracy.
Haleema Sadia, Parvez Alam
wiley   +1 more source

Biogeographical analyses to facilitate targeted conservation of orchid diversity hotspots in Costa Rica

open access: yesDiversity and Distributions: A journal of biological invasions and biodiversity, 2020
We conduct a biogeographical assessment of orchids in a global biodiversity hotspot to explore their distribution and occurrences of local hotspots while identifying geographic attributes underpinning diversity patterns.
B. Crain, Melania Fernández
semanticscholar   +1 more source

Floral scent of artificial hybrids between two Schiedea species that share a moth pollinator

open access: yesAmerican Journal of Botany, Volume 112, Issue 7, July 2025.
Abstract Premise In flowering plants, pollinators' ability to recognize chemical displays of hybrids may erode reproductive barriers. Hybrids may produce novel or altered floral scent blends that are unattractive, or scents similar to either parent that remain attractive and promote backcrossing.
John M. Powers   +3 more
wiley   +1 more source

Effects of age and gender on immunogenicity and reactogenicity of SpikoGen recombinant spike protein vaccine: a post-hoc analysis

open access: yesScientific Reports
SpikoGen® COVID-19 vaccine is based on the spike protein extracellular domain of the ancestral Wuhan-Hu-1 strain modified by removal of the furin cleavage site and addition of stabilising mutations expressed as a recombinant protein in insect cells.
Nassim Anjidani   +4 more
doaj   +1 more source

Transcriptomic Landscape of Medicinal Dendrobium Reveals Genes Associated With the Biosynthesis of Bioactive Components

open access: yesFrontiers in Plant Science, 2020
Many plants of Dendrobium genus are precious traditional herbs with high commercial value and excellent medicinal effects. They are perennial aerophytes or epiphytes of terrestrial orchids growing on cliffs and tree trunks covered with mosses in forests ...
Zhicai Wang   +6 more
doaj   +1 more source

Biosilicification in monocots: Comparative analysis highlights contrasting patterns of deposition

open access: yesAmerican Journal of Botany, Volume 112, Issue 7, July 2025.
Abstract Premise New insights into biomineral uptake and sequestration are important for understanding how plants grow. Some plants accumulate silica accretions in precise locations in particular cells. Among monocots, controlled biosilicification occurs in several different forms and is restricted to commelinids and orchids. Methods We utilized energy‐
Paula J. Rudall   +2 more
wiley   +1 more source

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