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Authors Garcia, IV; Mendoza, RE
Author Full Name Garcia, Ileana V.; Mendoza, Rodolfo E.
Title Relationships among soil properties, plant nutrition and arbuscular mycorrhizal fungi-plant symbioses in a temperate grassland along hydrologic, saline and sodic gradients
Source FEMS MICROBIOLOGY ECOLOGY
Language English
Document Type Article
Author Keywords arbuscular mycorrhiza; grasses; hydrologic; saline and sodic gradients; Lotus tenuis; nitrogen; phosphorus; seasonal effects
Keywords Plus SEASONAL-VARIATION; PHOSPHORUS-NUTRITION; COMMUNITY STRUCTURE; GROWTH; COLONIZATION; INFECTION; WETLAND; DYNAMICS; ECOLOGY; ROOTS
Abstract Temporal variations in the relationships among plant nutrient concentrations, soil properties and arbuscular-mycorrhizal (AM) fungal dynamics were studied along a topographic and saline gradient in a temperate grassland soil. Soil and plant (Lotus tenuis, Paspalum vaginatum, Stenotaphrum secundatum) samples were collected on four seasonally based occasions. The morphology of AM root colonization had a similar pattern in the plants studied. Maximum arbuscular colonization occurred at the beginning of the growing season in late winter and was minimal in late summer, but maximal vesicular colonization occurred in summer and was minimal in winter, suggesting a preferential production of these morphological phases by the fungus with respect to season. The greatest arbuscular colonization was associated with the highest N and P concentrations in plant tissue, suggesting a correspondence with increases in the rate of nutrient transfer between the symbiotic partners. Water content, salinity and sodicity in soil were positively associated with AM root colonization and arbuscule colonization in L. tenuis, but negatively so in the grasses. There were distinct seasonally related effects with respect to both spore density and AM colonization, which were independent of particular combinations of plant species and soil sites.
Author Address [Garcia, Ileana V.; Mendoza, Rodolfo E.] Consejo Nacl Invest Cientificas & Tecnicas, Museo Argentino Ciencias Nat Bernardino Rivadavia, CONICET, Buenos Aires, DF, Argentina
Reprint Address Garcia, IV (corresponding author), Consejo Nacl Invest Cientificas & Tecnicas, Museo Argentino Ciencias Nat Bernardino Rivadavia, CONICET, Av Angel Gallardo 470,Ciudad Buenos Aires, Buenos Aires, DF, Argentina.
E-mail Address igarcia@macn.gov.ar
Times Cited 30
Total Times Cited Count (WoS, BCI, and CSCD) 36
Publisher BLACKWELL PUBLISHING
Publisher City OXFORD
Publisher Address 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND
ISSN 0168-6496
29-Character Source Abbreviation FEMS MICROBIOL ECOL
ISO Source Abbreviation FEMS Microbiol. Ecol.
Publication Date MAR
Year Published 2008
Volume 63
Issue 3
Beginning Page 359
Ending Page 371
Digital Object Identifier (DOI) 10.1111/j.1574-6941.2008.00441.x
Page Count 13
Web of Science Category Microbiology
Subject Category Microbiology
Document Delivery Number 259UL
Unique Article Identifier WOS:000252966300010
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