Results 21 to 30 of about 213 (110)

Genome-wide prediction and functional validation of promoter motifs regulating gene expression in spore and infection stages of Phytophthora infestans. [PDF]

PLoS Pathogens, 2013
Most eukaryotic pathogens have complex life cycles in which gene expression networks orchestrate the formation of cells specialized for dissemination or host colonization.
Sourav Roy, Meenakshi Kagda, Howard S Judelson   +2 more
doaj   +1 more source

Electron microscopy of primary zoosporogenesis in Plasmodiophora brassicae

Mycoscience, 2001
Primary zoosporogenesis in resting sporangia ofPlasmodiophora brassicae that had been incubated for 14 d in culture solution containing turnip seedlings was examined by transmission electron microscopy. A single zoospore differentiated within each sporangium, the differentiation being initiated by the emergence, of two flagella in the tight space ...
Shuhei Tanaka, Shin-ichi Ito, Mitsuro Kameya-lwaki   +2 more
openaire   +1 more source

Zoosporogênese in vitro entre isolados do oomiceto Pythium insidiosum In vitro zoosporogenesis among oomycetes Pythium insidiosum isolates

Ciência Rural, 2008
Pythium insidiosum é um oomiceto aquático, responsável pela etiologia da pitiose, uma enfermidade crônica, observada freqüentemente em eqüinos. A produção de zoósporos móveis por este microrganismo se constitui no fator determinante da ocorrência da ...
Daniela Isabel Brayer Pereira, Janio Morais Santurio, Sydney Hartz Alves, Juliana Siqueira Argenta, Ayrton Sydnei Cavalheiro, Laerte Ferreiro   +5 more
doaj   +1 more source

Chitosan biostimulant controls infection of cucumber by Phytophthora capsici through suppression of asexual reproduction of the pathogen

Acta Agrobotanica, 2019
The biopolymer chitosan is a derivative of chitin, which can promote plant growth and protect plants from phytopathogens. This study aimed to evaluate the efficacy of chitosan as a biostimulant and a biorational agent to protect cucumber plants from ...
Fatematuz Zohara, Musrat Zahan Surovy, Amena Khatun, Md. F. R. K. Prince, Md. Abdul Mannan Akanda, Mahfuzur Rahman, Md. Tofazzal Islam   +6 more
doaj   +1 more source

A method to obtain rapid zoosporogenesis of Pythium insidiosum

Mycopathologia, 1988
Nine strains of Pythium insidiosum the etiologic agent of pythiosis, were inoculated on 2% water agar plus grass blades and then incubated one day at 25 degrees C, 35 degrees C and 37 degrees C. Sporangium and secondary biflagellate-type zoosporas from the parasitized grass blades were noticed in induction medium after one hour of incubation at 35 ...
Mendoza, Leonel, Prendas, Jorge
openaire   +4 more sources

A Mating-Induced Protein of Phytophthora infestans Is a Member of a Family of Elicitors with Divergent Structures and Stage-Specific Patterns of Expression

Molecular Plant-Microbe Interactions, 2003
Five members of an elicitor-like gene family from Phytophthora infestans were examined. The family was identified through the analysis of M81, a mating-induced gene. The predicted M81 product resembled a 42-kDa P.
Anna-Liisa Fabritius, Howard S. Judelson
doaj   +1 more source

Ultrastructural studies on zoosporogenesis of Halopteris filicina (Sphacelariales, Phaeophyta)

Phycologia, 1986
Abstract The development of the unilocular sporangia of Halopteris filicina (Phaeophyta) commences with the formation of the reproductive branchlets, the apical cells of which differentiate into spore mother cells. Afterwards, meiosis occurs, which becomes evident by the formation of typical synaptonemal complexes.
KATSAROS, C, GALATIS, B
openaire   +2 more sources

Aspectos clínicos, morfológicos e imuno-histoquímicos da pitiose gastrintestinal canina

Pesquisa Veterinária Brasileira, 2009
Através de um estudo retrospectivo dos casos de biópsias e necropsias de cães recebidos no Laboratório de Patologia Veterinária da Universidade Federal de Santa Maria, constatou-se a ocorrência de dois casos confirmados e de quatro casos suspeitos de ...
Maria E. Trost, Adriane L. Gabriel, Eduardo K. Masuda, Rafael A. Fighera, Luiz F. Irigoyen, Glaucia D. Kommers   +5 more
doaj   +1 more source

Gene Expression Profiling During Asexual Development of the Late Blight Pathogen Phytophthora infestans Reveals a Highly Dynamic Transcriptome

Molecular Plant-Microbe Interactions, 2008
Much of the pathogenic success of Phytophthora infestans, the potato and tomato late blight agent, relies on its ability to generate from mycelia large amounts of sporangia, which release zoospores that encyst and form infection structures.
Howard S. Judelson, Audrey M. V. Ah-Fong, George Aux, Anna O. Avrova, Catherine Bruce, Cahid Cakir, Luis da Cunha, Laura Grenville-Briggs, Maita Latijnhouwers, Wilco Ligterink, Harold J. G. Meijer, Samuel Roberts, Carrie S. Thurber, Stephen C. Whisson, Paul R. J. Birch, Francine Govers, Sophien Kamoun, Pieter van West, John Windass   +18 more
doaj   +1 more source

Protein Kinase C Is Likely to be Involved in Zoosporogenesis and Maintenance of Flagellar Motility in the Peronosporomycete Zoospores

Molecular Plant-Microbe Interactions, 2011
The motility of zoospores is critical in the disease cycles of Peronosporomycetes that cause devastating diseases in plants, fishes, vertebrates, and microbes.
Md. Tofazzal Islam, Andreas von Tiedemann, Hartmut Laatsch   +2 more
doaj   +1 more source