Results 21 to 30 of about 309,090 (302)

Spore Evidence for the Origin of Isoetalean Lycopsids?

open access: yesLife, 2023
A new hypothesis about the origin of isoetalean lycopsids was proposed based on palynological data. The occurrence of three apical papillae on the proximal surfaces of miospores is a significant palynological feature that is clearly defined in both ...
Jiří Bek, Jana Votočková Frojdová
doaj   +1 more source

Spore Germination

open access: yesMicrobiology Spectrum, 2015
ABSTRACT Despite being resistant to a variety of environmental insults, the bacterial endospore can sense the presence of small molecules and respond by germinating, losing the specialized structures of the dormant spore, and resuming active metabolism, before outgrowing into vegetative cells.
Anne, Moir, Gareth, Cooper
openaire   +2 more sources

Ocorrência de Fungos Micorrízicos Arbusculares em resíduo da mineração de bauxita revegetado com espécies arbóreas Arbuscular mycorrhizal fungi occurrence in bauxite mining residue planted to tree species

open access: yesActa Botânica Brasílica, 2007
Avaliou-se a ocorrência de fungos micorrízicos arbusculares (FMAs) em tanques contendo resíduo da mineração de bauxita cultivados com espécies arbóreas inoculadas com Glomus clarum Nicol.
Ana Lucy Caproni   +3 more
doaj   +1 more source

Studies on the Life Cycle and Transmission of \u3ci\u3eCougourdella\u3c/i\u3e Sp., A Microsporidian Parasite of \u3ci\u3eGlossosoma Nigrior\u3c/i\u3e (Trichoptera: Glossosomatidae) [PDF]

open access: yes, 2018
The trichopteran Glossosoma nigrior, the dominant benthic invertebrate grazer in Michigan trout streams, hosts a microsporidian (Protozoa) pathogen, Cougourdella sp., which strongly regulates the population density of larvae in the stream.
Heilveil, Jeffrey S   +2 more
core   +2 more sources

Clostridium difficile Spore-Macrophage Interactions: Spore Survival

open access: yesPLoS ONE, 2012
Clostridium difficile is the main cause of nosocomial infections including antibiotic associated diarrhea, pseudomembranous colitis and toxic megacolon. During the course of Clostridium difficile infections (CDI), C. difficile undergoes sporulation and releases spores to the colonic environment.
Paredes-Sabja, Daniel   +4 more
openaire   +6 more sources

Insects Associated With Butternut and Butternut Canker in Minnesota and Wisconsin [PDF]

open access: yes, 2018
Butternut, Juglans cinerea, is being killed throughout its native range in North America by the fungus Sirococcus clavigignenti-juglandacearum. In addition to rain splashed spores, it is thought that the fungus may have spread over long distances to ...
Katovich, Steven A, Ostry, Michael E
core   +3 more sources

A revised stratigraphy for the Palaeocene Agatdalen flora (Nuussuaq Peninsula, western Greenland): correlating fossiliferous outcrops, macrofossils, and palynological samples from phosphoritic nodules

open access: yesActa Palaeobotanica, 2016
The Cretaceous and Palaeogene floras of western Greenland that were initially described as part of the classical work “Flora fossilis arctica” by Oswald Heer in the 19th century are currently under revision.
Grímsson Friđgeir   +3 more
doaj   +1 more source

Sporormiella as a tool for detecting the presence of large herbivores in the Neotropics [PDF]

open access: yes, 2016
The reliability of using the abundance of Sporormiella spores as a proxy for the presence and abundance of megaherbivores was tested in southern Brazil. Mud-water interface samples from nine lakes, in which cattle-use was categorized as high, medium, or ...
ABSY ML   +52 more
core   +3 more sources

Performance Assessment of UVAPS: Influence of Fungal Spore Age and Air Exposure [PDF]

open access: yes, 2007
This work focused on two main outcomes. The first was the assessment of the response of the Ultraviolet Aerodynamic Particle Sizer Spectrometer (UVAPS) for two different fungal spore species.
Agranovski   +36 more
core   +2 more sources

Spores and Spore Formers

open access: yes, 2017
Bacterial spore formers have been the focus of intense study for almost half a century centered primarily on Bacillus subtilis. This research has given us a detailed picture of the genetic, physiological and biochemical mechanisms that allow bacteria to survive harsh environmental conditions by forming highly robust spores. Although, many basic aspects
Ezio Ricca   +4 more
openaire   +3 more sources

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