Exploration of mechanisms regulating ectomycorrhizal colonization of boron-fertilized pine. [Pisolithus tinctorius]

Technical Report · Sat Jun 01 04:00:00 EDT 1991

OSTI ID:5612612

Garrett, H E; Sword, M A

The ectomycorrhizal association is a naturally occurring symbiotic relationship existing between ectomycorrhizal-forming fungi and the root system of some plants, including many coniferous species. Since boron fertilization (BF) has been reported to increase fungal colonization of clover and alfalfa, the effect of BF on fungal colonization and growth of shortleaf pine was examined. Inoculation of seedlings was shown to increase growth responses in boron treated plants. BF increases root sucrose concentrations required for fungal development and improves the nutritional balance of the plant. Mycorrhizae increase auxin levels in root (possibly increasing root primordial development) while BF decreases root auxin (possibly increasing root elongation). BF reduces phenolic concentrations in the root. BF enhances mycorrhizae and root development, and results in increased tree seedling growth. 36 refs., 9 figs.

• Research Organization: Missouri Univ., Columbia, MO (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG01-86CE15270
• OSTI ID: 5612612
• Report Number(s): DOE/CE/15270-T17; ON: DE91014995
• Country of Publication: United States
• Language: English

Related Subjects

550700 -- Microbiology
553000* -- Agriculture & Food Technology
59 BASIC BIOLOGICAL SCIENCES
60 APPLIED LIFE SCIENCES
AROMATICS
AUXINS
BIOLOGICAL EFFECTS
BIOLOGICAL PATHWAYS
BORIC ACID
BORON
CARBOHYDRATES
CHEMISTRY
CONIFERS
DISACCHARIDES
DOCUMENT TYPES
ELEMENTS
FERTILIZERS
GROWTH
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
METABOLISM
MITIGATION
MORPHOLOGY
MYCORRHIZAS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
PHENOLS
PINES
PINOPHYTA
PLANT GROWTH
PLANT GROWTH REGULATORS
PLANTS
PROGRESS REPORT
ROOTS
SACCHARIDES
SACCHAROSE
SEEDLINGS
SEMIMETALS
SOIL CHEMISTRY
SYMBIOSIS
TRANSLOCATION
TREES