Effect of zinc on germination of spores of Glomus mosseae and infection of soybean roots

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Proc Am Phytopathol Soc; (United States)

OSTI ID:6250203

McIlveen, W D; Cole, H Jr

Freshly harvested spores of Glomus mosseae from roots of red clover were allowed to germinate on agar media supplemented with 0, 0.1, 0.5, 1.0, 5.0, 10.0 or 50.0 ppm Zn. Germination continued for at least 12 days in all treatments except at the highest treatment rate of Zn in which no spores germinated. The percentage of spores germinated after 12 days was greater in treatments receiving 0.1 to 1.0 ppm Zn than in treatments where no Zn was added, but at higher concentrations spore germination was inhibited. Soybean plants were grown in 10 kg nonsterile soil in plastic containers in a greenhouse. The soil was amended with ZnSO/sub 4/ to provide 0, 18, 45, and 135 ppm Zn on a dry soil weight basis. After amendments were made, soil tests for available Zn indicated 0.60, 0.66, 1.55, and 4.18 ppm Zn respectively. Following 7 weeks growth, the soybean roots were harvested and the number of infections per cm of root determined. The number of infections was significantly increased by the lowest rate of added Zn but higher rates of added Zn resulted in decreased infection by G. mosseae. Tests for available Zn in the soil appear to be accurate as there was good agreement between the rates of Zn which influenced spore germination in vitro and the rates of available Zn in soil which influenced infection of roots.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 6250203
• Journal Information: Proc Am Phytopathol Soc; (United States), Journal Name: Proc Am Phytopathol Soc; (United States) Vol. 1
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
ELEMENTS
FERTILIZERS
FUNGI
GERMINATION
GLYCINE HISPIDA
IN VITRO
INHIBITION
INJURIES
LEGUMINOSAE
METALS
OXYGEN COMPOUNDS
PLANT DISEASES
PLANTS
ROOTS
SOILS
SPORES
SULFATES
SULFUR COMPOUNDS
ZINC
ZINC COMPOUNDS
ZINC SULFATES