Results 11 to 20 of about 35,328 (263)

Density‐dependent mechanisms regulate spore formation in the diatom Chaetoceros socialis [PDF]

Limnology and Oceanography Letters, 2020
Resting stages are reported for several unicellular eukaryotes including diatoms that can produce spores or resting cells. These stages represent a repository of diversity in sediments but the factors that induce their formation are elusive.
Angela Pelusi, Francesca Margiotta, Augusto Passarelli, Maria Immacolata Ferrante, Maurizio Ribera d'Alcalà, Marina Montresor   +5 more
doaj   +3 more sources

Mycorrhizal colonization and spore density in Citrus sinensis-weed interaction

Journal of the Saudi Society of Agricultural Sciences
Arbuscular mycorrhizal fungi (AMF) are microorganisms that establish symbiotic associations with the roots of most crops, enhancing water and nutrient uptake, thus improving growth and yield.
Hana Ziane, Hana Ksentini, Amel Meddad-Hamza, Yousra Boukerche, Wafa Nerier   +4 more
doaj   +2 more sources

PHYSICAL SURFACE FEATURES AND CHEMICAL DENSITY OF DRY BACTERIAL SPORES [PDF]

Journal of Bacteriology, 1963
Berlin , E. (U.S. Department of Agriculture, Washington, D.C.), H. R. Curran, and M. J. Pallansch . Physical surface features and chemical density of dry bacterial spores. J. Bacteriol. 86: 1030–1036.
E, BERLIN, H R, CURRAN, M J, PALLANSCH
openaire   +2 more sources

Wet and dry bacterial spore densities determined by buoyant sedimentation [PDF]

Applied and Environmental Microbiology, 1982
The wet densities of various types of dormant bacterial spores and reference particles were determined by centrifugal buoyant sedimentation in density gradient solutions of three commercial media of high chemical density. With Metrizamide or Renografin, the wet density values for the spores and permeable Sephadex beads were higher than those obtained ...
Tisa, Louis S., Koshikawa, T., Gerhardt, P.   +2 more
openaire   +2 more sources

Protoplast water content of bacterial spores determined by buoyant density sedimentation [PDF]

Journal of Bacteriology, 1985
Protoplast wet densities (1.315 to 1.400 g/ml), determined by buoyant density sedimentation in Metrizamide gradients, were correlated inversely with the protoplast water contents (26.4 to 55.0 g of water/100 g of wet protoplast) of nine diverse types of pure lysozyme-sensitive dormant bacterial spores. The correlation equation provided a precise method
J A, Lindsay, T C, Beaman, P, Gerhardt
openaire   +2 more sources

Spore Density Determines Infection Strategy by the Plant Pathogenic Fungus Plectosphaerella cucumerina [PDF]

Plant Physiology, 2016
Necrotrophic and biotrophic pathogens are resisted by different plant defenses. While necrotrophic pathogens are sensitive to jasmonic acid (JA)-dependent resistance, biotrophic pathogens are resisted by salicylic acid (SA)- and reactive oxygen species (ROS)-dependent resistance.
Pierre Pétriacq, Joost H.M. Stassen, Jurriaan Ton   +2 more
openaire   +3 more sources

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

Agronomy, 2017
Arbuscular mycorrhizal fungi (AMF) play major roles in nutrient acquisition by crops and are key actors of agroecosystems productivity. However, agricultural practices can have deleterious effects on plant–fungi symbiosis establishment in soils, thus ...
Julien Verzeaux, Elodie Nivelle, David Roger, Bertrand Hirel, Frédéric Dubois, Thierry Tetu   +5 more
doaj   +1 more source

Distribution of Arbuscular Mycorrhizal Fungi in Upland Field Soil of Japan 1. Relationship Between Spore Density and The Soilenvironmental Factor

Plant Production Science, 2007
To Quantify The Effects of Arbuscular Mycorrhizal Fungi (Am Fungi) On The Growth of Upland Field Crops Cultivated in Japan, We Analyzed Soil Samples From 124 Sites in 18 Japanese Prefectures For Available P Content, Ph and Am Fungal Spore Density. The Am
Katsunori Isobe, Emi Aizawa, Yosuke Iguchi, Ryuichi Ishii   +3 more
doaj   +1 more source

Growth responses of sugarcane to mycorrhizal spore density and phosphorus rate [PDF]

Australian Journal of Agricultural Research, 2005
Arbuscular mycorrhizal (AM) fungi, commonly found in long-term cane-growing fields in northern Queensland, are linked with both negative and positive growth responses by sugarcane (Saccharum spp.), depending on P supply. A glasshouse trial was established to examine whether AM density might also have an important influence on these growth responses ...
Kelly, R. M., Edwards, D. G., Thompson, J. P., Magarey, R. C.   +3 more
openaire   +2 more sources

Biodiversity and distribution of arbuscular mycorrhizal fungi in Araucaria angustifolia forest Biodiversidade e distribuição de fungos micorrízicos arbusculares em floresta de Araucaria angustifolia

Scientia Agricola, 2007
Araucaria angustifolia (Bert.) O. Ktze. is an endangered Brazilian coniferous tree that has been almost exterminated in the native areas because of uncontrolled wood exploitation.
Milene Moreira, Dilmar Baretta, Siu Mui Tsai, Sandra Maria Gomes-da-Costa, Elke Jurandy Bran Nogueira Cardoso   +4 more
doaj   +1 more source