Results 21 to 30 of about 13,407 (172)

Negative Chemotaxis of Zoospores of Phytophthora cinnamomi [PDF]

Journal of General Microbiology, 1974
SUMMARY: Zoospores of Phytophthora cinnamomi in a concentration gradient of hydrochloric acid or its chloride salts exhibited acute, repetitive turning movements at a point which corresponded to a critical concentration of cation and not to a critical concentration gradient.
R N, Allen, J D, Harvey
openaire   +2 more sources

Fungal disease management in cotton using plant protection products: An Australian perspective

Pest Management Science, EarlyView.
Cotton disease management requires evidence‐driven use of plant protection products. Progress hinges on integrating chemistry, diagnostics, stewardship and sustainability to build resilient production systems. Abstract Cotton production faces persistent challenges from pathogens that compromise plant establishment, yield, and fibre quality.
Noel L Knight, Linda J Smith, Sambasivam Periyannan, Levente Kiss   +3 more
wiley   +1 more source

Alcoholic extracts of Russian sage (Salvia yangii) contain bioactive terpenoids with inhibitory activity against grapevine downy mildew (Plasmopara viticola)

Pest Management Science, EarlyView.
Alcoholic extracts from flowers, leaves, and shoots of Russian sage decreased downy mildew severity on grapevine leaf disks. Fractionation followed by metabolomic analysis revealed putative terpenoids as the main components of the active fractions. Specifically, 7‐methylrosmanol, 12‐O‐methylcarnosic acid, carnosic acid, and carnosol were identified as ...
Anna Smaldone, Oscar Giovannini, Martina Magni, Michael Oberhuber, Peter Robatscher, Michele Perazzolli   +5 more
wiley   +1 more source

Synergistic and Antagonistic Effects of Chemical Pollutants and Parasitic Fungi on Cyanobacterial Metabolism

Environmental Toxicology, EarlyView.
ABSTRACT Freshwater ecosystems are increasingly impacted by anthropogenic pollutants, including the widely used herbicide metolachlor (MET) and cigarette butt (CB) litter. Parasites represent an additional biotic stressor that can modulate pollutant effects on their hosts.
Erika Berenice Martínez‐Ruiz, Jutta Fastner, Stephanie Spahr, Justyna Wolinska   +3 more
wiley   +1 more source

Aggregation of Phytophthora capsici Zoospores and their Interaction with Zoospores of P. palmivora [PDF]

Journal of General Microbiology, 1974
Zoospores of Phytophthora palmivora Butler aggregated without encysting within 2 min when they were suspended in water (Ko & Chase, 1973). Such zoospore behaviour was temperature-dependent with an optimum temperature of 16 °C. Aggregate formation also depended on both zoospore concentration and depth of suspension.
W. H. Ko, M. J. Chan
openaire   +1 more source

Novel Hydrurus species (Chrysophyceae) and their adaptations to high‐altitude European and Arctic snowfields

Journal of Phycology, EarlyView.
Abstract Colored snow caused by green algae (Chlorophyceae) is well known, but melting snowpacks can also harbor golden‐brown blooms consisting of Chrysophyceae. We collected 14 samples of cryoflora in the Austrian and Swiss Alps, the High Tatras in Slovakia, and in Arctic Svalbard. Eight laboratory unicellular flagellated strains were established from
Lenka Procházková, Robert A. Andersen, Thomas Leya, Tomáš Řezanka, Martin Lukeš, Linda Nedbalová, Daniel Remias   +6 more
wiley   +1 more source

Identification and Functional Characterization of Isoflavone synthase Gene Family in Pea (Pisum sativum): The Entry Point to Pisatin Biosynthesis

Legume Science, Volume 8, Issue 2, June 2026.
ABSTRACT Isoflavone synthase (IFS), a cytochrome P450 monooxygenase of the CYP93C subfamily, catalyzes the conversion of flavanones into isoflavones, the first committed step in the biosynthesis of isoflavonoid phytoalexins. In pea (Pisum sativum L.), the phytoalexin pisatin plays a pivotal role in defense against pathogens.
Muhammad Sufyan Tahir, Kuflom Kuflu, Nishat Shayala Islam, Tim McDowell, Sangeeta Dhaubhadel   +4 more
wiley   +1 more source

Sensitivity of Antarctic Urospora penicilliformis (Ulotrichales, Chlorophyta) to ultraviolet radiation is life stage dependent [PDF]

, 2009
The sensitivity of different life stages of the eulittoral green alga Urospora penicilliformis (Roth) Aresch. to ultraviolet radiation (UVR) was examinedin the laboratory.
Campana, G., Hanelt, Dieter, Quartino, M. L., Roleda, Michael, Wiencke, Christian, Wulff, A.   +5 more
core   +1 more source

Analysis of Aphanomyces euteiches in Swedish Commercial Pea Field Soils and in Legume Cover Crops Using Droplet Digital PCR

Plant Pathology, Volume 75, Issue 3, May‐June 2026.
Workflow for investigation of Aphanomyces euteiches occurrence in 24 field soil samples collected from different regions in Sweden using droplet digital PCR and bioassays with susceptible pea cv. Linnea. ABSTRACT Aphanomyces root rot (ARR), caused by Aphanomyces euteiches, is a major constraint in pea (Pisum sativum) production.
Zahra Saad Omer, Eivor Sofia Dubusc, Eva Edin, Ann‐Charlotte Wallenhammar, Anders Jonsson, Magnus Karlsson   +5 more
wiley   +1 more source

Strategies for administration of biosurfactants-producing pseudomonads in closed hydroponic systems [PDF]

, 2011
Zoospore-producing oomycetes are major plant pathogens of particular concern in hydroponic systems. Compared with pesticides, biocontrol using antagonistic microorganisms is a sustainable approach to control oomycetes.
Alsanius, Beatrix, Holmkvist, Anna, Hultberg, Malin   +2 more
core   +1 more source