Results 171 to 180 of about 7,702 (213)

Culture-grown sporangia of Phytophthora infestans differ from sporangia harvested from living plant tissue [PDF]

open access: yes, 2017
To assess the impact growth substrate has on the resulting sporangia, field and laboratory based inoculation experiments were carried out using three isolates of Phytophthora infestans clonal lineage US-23. Isolates were grown in pure culture on agar plates as well as on detached Solanum lycopersicum leaflets in moist chambers. Sporangia harvested from
Patev, Sean Paul
openaire   +4 more sources

Survival of Pseudoperonospora cubensis sporangia exposed to solar radiation [PDF]

open access: yesPlant Pathology, 2010
To determine the effects of solar radiation on the survival of sporangia of Pseudoperonospora cubensis, the cause of cucurbit downy mildew, detached sporangia of P.
Loukas Kanetis
exaly   +2 more sources

Simultaneous quantification of sporangia and zoospores in a biotrophic oomycete with an automatic particle analyzer: Disentangling dispersal and infection potentials [PDF]

open access: yesJournal of Microbiological Methods, 2014
Quantitative pathogenicity traits drive the fitness and dynamics of pathogens in agricultural ecosystems and are key determinants of the correct management of crop production over time. However, traits relating to infection potential (i.e.
François Delmotte   +2 more
exaly   +2 more sources

The development of sporangia of Phytophthora infestans

Mycological Research, 1995
The dynamics of sporulation and zoosporogenesis of Phytophthora infestans in a naturally infected crop of potato cv. Maris Bard and on potted plants of the same cultivar infected artificially with the same fungus are described. Development of sporangiophores and sporangia was synchronous after induction.
C. Evola Maltese   +2 more
openaire   +1 more source

The Ultrastructure and Development of Sporangia In Gilbertella Persicaria

Mycologia, 1968
SUMMARYThe ultrastructural features of sporogenesis in the mucoraceous fungus Gilbertella persicaria are illustrated and described, with emphasis on cytokinesis and spore wall formation. During cleavage, the principal structural changes involve pattern transformations of protoplasmic membranes.
openaire   +2 more sources

Development of Fern Sporangia: a Fluorescence Microscopy Study

Biotechnic & Histochemistry, 1992
The utility of fluorescence microscopy for studying development of fern spores is investigated. Changes in the fluorescence characteristics during the developmental stages of fern sporangia can be attributed to the changes in the chemical composition of the cell wall.
J, Singh, S, Devi
openaire   +2 more sources

Rare finding of mucorales sporangia and chlamydospores in tissue

Pathology International
AbstractMost elements of filamentous fungi seen in human tissue by pathologists are hyphae, and encountering other elements may interfere with diagnosis. Sporangia and chlamydospores are such elements that have been described in only a few case reports.
Misa Kojima   +9 more
openaire   +2 more sources

Mitosis and the development of thin-walled sporangia, resistant sporangia, and gametangia of Allomyces

Canadian Journal of Botany, 1969
A study was made of nuclear behavior in Allomyces during development and germination of thin-walled sporangia, gametangia, and resistant sporangia. The pattern of nuclear migration, division, and multiplication during development in thin-walled sporangia and gametangia was found to be similar.
openaire   +1 more source

Differentiation of Sporangia in Marsilia quadrifolia

Botanical Gazette, 1925
1. The microsporangia and megasporangia of Marsilia are derived from sister cells. 2. The stalk of the microsporangium is very much longer than that of the megasporangium. 3. In the spore mother cell stage the microsporangia are elongated and oval, while the megasporangia are somewhat flattened. 4. The sporangia differ in their time of development.
openaire   +1 more source

Dispersal and viability of sporangia of Pseudoperonospora cubensis

Transactions of the British Mycological Society, 1971
Intensive dispersal of sporangia of Pseudoperonospora cubensis (Berk & Curt.) Rostow from infected fields of cucumber in a hot, dry climate started between 06.00 and 07.00 h, reached a peak around 08.00 h, and subsided by noon. Infectivity of airborne sporangia to cucumber test plants diminished with high temperatures and high relative humidities ...
Y. Cohen, J. Rotem
openaire   +1 more source

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