Results 31 to 40 of about 475 (155)

From the Guiana Highlands to the Brazilian Atlantic Rain Forest: four new species of Selaginella (Selaginellaceae – Lycopodiophyta: S. agioneuma, S. magnafornensis, S. ventricosa, and S. zartmanii) [PDF]

open access: yesPeerJ, 2018
We describe four new species in the genus Selaginella (i.e., S. agioneuma, S. magnafornensis, S. ventricosa, and S. zartmanii) from Brazil, all presently classified in subg. Stachygynandrum.
Iván A. Valdespino   +3 more
doaj   +2 more sources

The auxin gatekeepers: Evolution and diversification of the YUCCA family. [PDF]

open access: yesPlant J
SUMMARY The critically important YUCCA (YUC) gene family is highly conserved and specific to the plant kingdom, primarily responsible for the final and rate‐limiting step for indole‐3‐acetic acid (IAA) biosynthesis. IAA is an essential phytohormone, involved in virtually all aspects of plant growth and development.
Vijayanathan M   +4 more
europepmc   +2 more sources

Variación anatómica del tallo y ultraestructura de la membrana de la punteadura en los elementos traqueales de Selaginella pallescens (Selaginellaceae)

open access: yesBotan‪ical Sciences, 2018
Antecedentes: La posible variación anatómica intraespecífica en traqueofitas inferiores no se registra. En este trabajo se describe la anatomía de tallos aéreos de Selaginella pallescens de diferentes hábitats, así como la membrana de la punteadura del ...
Dalia Grego-Valencia   +5 more
doaj   +1 more source

Environmental heterogeneity dynamics drive plant diversity on oceanic islands

open access: yesJournal of Biogeography, Volume 47, Issue 10, Page 2248-2260, October 2020., 2020
Abstract Aim The General Dynamic Model (GDM) links island biogeographical processes to island geological history. A key premise of the GDM implies that environmental factors shaping the ecology and evolution of biota on oceanic islands follow a hump‐shaped trend over the island's life span and drive dynamics in carrying capacity, species diversity and ...
Martha Paola Barajas‐Barbosa   +4 more
wiley   +1 more source

Betaines in Four Additional Phyla of Green Plants

open access: yesNatural Product Communications, 2009
Fourteen fern, two horsetail (Pteridophyta), three clubmoss (Lycopodiophyta), nine moss and two liverwort (Bryophyta, Marchantiophyta) species were examined for the presence of betaines. Glycinebetaine was detected in some of the fern, clubmoss, moss and
Gerald Blunden   +3 more
doaj   +1 more source

Checklist of the vascular flora of a portion of the hyper-humid region of La Chinantla, Northern Oaxaca Range, Mexico

open access: yesBotan‪ical Sciences, 2017
Background: La Chinantla, a topographically and geomorphologically complex region, and probably the most humid in the country, hosts a diverse but largely unknown biota, particularly at higher elevations. Questions: How many plant species are present
Jorge A. Meave   +4 more
doaj   +1 more source

Діджиталізація даних про біорізноманіття Вінницької області на прикладі вищих спорових рослин (Bryophyta, Lycopodiophyta, Equisetophyta, Polypodiophyta)

open access: yes, 2023
У кваліфікаційній роботі представлено результати діджиталізації гербарного фонду з колекції «Гербарій флори Поділля» Вінницького обласного краєзнавчого музею.
Бойко , І.Я.
core  

Evolutionary genomics revealed interkingdom distribution of Tcn1-like chromodomain-containing Gypsy LTR retrotransposons among fungi and plants

open access: yesBMC Genomics, 2010
Background Chromodomain-containing Gypsy LTR retrotransposons or chromoviruses are widely distributed among eukaryotes and have been found in plants, fungi and vertebrates.
Blinov Alexander   +2 more
doaj   +1 more source

Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat

open access: yesNew Phytologist, Volume 222, Issue 2, Page 1061-1075, April 2019., 2019
Summary Lycophytes are a key group for understanding vascular plant evolution. Lycophyte plastomes are highly distinct, indicating a dynamic evolutionary history, but detailed evaluation is hindered by the limited availability of sequences. Eight diverse plastomes were sequenced to assess variation in structure and functional content across lycophytes.
Jeffrey P. Mower   +6 more
wiley   +1 more source

Plastid phylogenomic analysis of green plants: A billion years of evolutionary history

open access: yesAmerican Journal of Botany, Volume 105, Issue 3, Page 291-301, March 2018., 2018
Premise of the Study For the past one billion years, green plants (Viridiplantae) have dominated global ecosystems, yet many key branches in their evolutionary history remain poorly resolved. Using the largest analysis of Viridiplantae based on plastid genome sequences to date, we examined the phylogeny and implications for morphological evolution at ...
Matthew A. Gitzendanner   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy