Results 31 to 40 of about 4,557 (230)

Paleometagenomics reveals environmental microbiome response to vegetation changes in northern Siberia over the millennia

open access: yesEnvironmental DNA, Volume 5, Issue 6, Page 1252-1264, November 2023., 2023
We integrated taxonomic with functional gene analysis, which enabled to shed light not only on community compositions but also on long‐term eco‐physiological adaptations and ecosystem functioning. Various genes coding enzymes responsible for biomass degradation, carbon metabolism, and adaptation to environmental stress were identified and traced over ...
Amedea Perfumo   +6 more
wiley   +1 more source

A new species of the equisetalean plant Equicalastrobus from the Middle Triassic of Argentina [PDF]

open access: yesActa Palaeontologica Polonica
We present a morphological-systematic study of new fossil specimens of equisetaleans (horsetails) from the Cortaderita Formation, Sorocayense Group, Middle Triassic, Cuyana Basin, southwest of the San Juan Province, Argentina.
JANO NEHUÉN PROCOPIO RODRÍGUEZ   +2 more
doaj   +1 more source

Deductive automated pollen classification in environmental samples via exploratory deep learning and imaging flow cytometry

open access: yesNew Phytologist, Volume 240, Issue 3, Page 1305-1326, November 2023., 2023
Summary Pollen and tracheophyte spores are ubiquitous environmental indicators at local and global scales. Palynology is typically performed manually by microscopic analysis; a specialised and time‐consuming task limited in taxonomical precision and sampling frequency, therefore restricting data quality used to inform climate change and pollen ...
Claire M. Barnes   +14 more
wiley   +1 more source

Is there silicon in flowers and what does it tell us?

open access: yesEcology and Evolution, Volume 13, Issue 10, October 2023., 2023
Whether flowers accumulate Si and what the implications may be was largely unknown. We analysed the flowers separated into their different anatomical parts, and leaves of different taxa. We conclude that flowers contain Si, in large amounts for some species, and hence the function of this element warrants more attention.
Jonas Schoelynck   +3 more
wiley   +1 more source

Non‐seed plants are emerging gene sources for agriculture and insect control proteins

open access: yesThe Plant Journal, Volume 116, Issue 1, Page 23-37, October 2023., 2023
SUMMARY The non‐seed plants (e.g., charophyte algae, bryophytes, and ferns) have multiple human uses, but their contributions to agriculture and research have lagged behind seed plants. While sharing broadly conserved biology with seed plants and the major crops, non‐seed plants sometimes possess alternative molecular and physiological adaptations ...
Carl R. Simmons, Rod A. Herman
wiley   +1 more source

Studies on the Feculae of Selected Michigan Acrididae (Orthoptera) [PDF]

open access: yes, 2017
Feculae have been used for some years in the study of insect food-habits and biology. Among the past authors who have used them are Frost (1928), Hodson and Brooks (1956), and Morris (1942), who discussed the use of feculae and frass in the ...
Gangwere, S.K., Tyrkus, Michael
core   +3 more sources

Agro-morphological and phytochemical diversity and silica content variability among Iranian populations of common horsetail (Equisetum arvense L.)

open access: yesJournal of Medicinal Plants, 2021
Background: Common horsetail (Equisetum arvense L.), is widely used in the bone and nail strengthen herbal products due to the presence of minerals, especially silica.
Mahdi Malekpour-Irdemousa   +5 more
doaj  

Ferns at the digital herbarium of the Central Siberian Botanical Garden SB RAS [PDF]

open access: yesBiodiversity Data Journal, 2021
According to the data in Index Herbariorum as of 1 December 2020, there are 3426 active herbaria in the world, containing 396,204,891 specimens and 124 herbaria in Russia with more than 16,175,000 specimens.
Nataliya Kovtonyuk   +2 more
doaj   +3 more sources

Morfología y ultraestructura de las esporas de las Equisetaceae (Equisetopsida) del Noroeste de Argentina

open access: yesBoletín de la Sociedad Argentina de Botánica, 2014
La familia Equisetaceae se haya representada en el Noroeste de Argentina por el género Equisetum Michx. ex DC con dos especies, E. bogotense Kunth y E. giganteum L. El estudio se realizó en base a material de herbario y fresco.
María Raquel Piñeiro   +1 more
doaj   +1 more source

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