+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Vesicular arbuscular mycorrhizal infection of grass seedlings in a degraded semi arid savanna in botswana



Vesicular arbuscular mycorrhizal infection of grass seedlings in a degraded semi arid savanna in botswana



New Phytologist 121(3): 477-485



Infection of eight indigenous grasses with vesicular-arbuscular mycorrhizal (VAM) fungi was studied in a savanna in South-eastern Botswana. Infection of seedlings with VAM fungi was rapid just after germination at the onset of the rainfall season. Particularly high infection levels were found in the primary roots of seedlings but levels temporarily dropped with the development of the secondary roots. In 30% of all cases germinating spores were found to be the source of infection, suggesting an important role for them in semi-arid grasslands. The inoculum potential of soils from eroded and non-eroded sites in the study area was compared. Subsoil was found to have a lower inoculum potential than topsoil. Topsoil from an eroded site without vegetation showed a lowered inoculum potential compared to sites with vegetation present. Topsoil from unvegetated sites where soil material was deposited however, did not always show a lower inoculum potential. This indicates that the transport and redistribution of water and soil material does not automatically result in lower infection levels.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 007999022

Download citation: RISBibTeXText

DOI: 10.2307/2557300


Related references

Variation in propagule numbers of vesicular arbuscular mycorrhizal fungi in a semi arid soil. Mycological Research 92(1): 28-33, 1989

Vesicular arbuscular mycorrhizal status of different angiosperms growing in a semi-arid soil of Andhra Pradesh. Indian Botanical Reporter 8(2): 153-155, 1989

Distribution of vesicular arbuscular mycorrhizal fungi in the crop fields of semi arid regions of western rajasthan india. Proceedings of the National Academy of Sciences India Section B (Biological Sciences) 58(4): 547-550, 1988

Vesicular-arbuscular mycorrhizal infection of Quercus rubra seedlings. New Phytologist 151(1): 257-264, 2001

Vesicular arbuscular mycorrhizal infection in arid zone trees of agroforestry systems. Journal of the Indian Society of Soil Science 47(1): 54-57, 1999

Distribution of vesicular-arbuscular mycorrhizal hyphae in the rhizospheres of trifoliate orange and Bahia grass seedlings under an intercropping system. Journal of the Japanese Society for Horticultural Science 69(3): 237-242, 2000

Signalling in Plants || Vesicular. Arbuscular Mycorrhizal Infection of Quercus rubra Seedlings. New Phytologist 151(1): 257-264, 2001

The effectiveness of arbuscular-mycorrhizal fungi and Aspergillus niger or Phanerochaete chrysosporium treated organic amendments from olive residues upon plant growth in a semi-arid degraded soil. Journal of Environmental Management 91(12): 2547-2553, 2011

The interaction of harvester ants and vesicular-arbuscular mycorrhizal fungi in a patchy semi-arid environment: The effects of mound structure on fungal dispersion and establishment. Functional Ecology 7(1): 13-20, 1993

The ecology and functioning of vesicular arbuscular mycorrhizas in co existing grassland species ii. nutrient uptake and growth of vesicular arbuscular mycorrhizal plants in a semi natural grassland. New Phytologist 120(4): 525-533, 1992

The Ecology and Functioning of Vesicular-Arbuscular Mycorrhizas in Co-Existing Grassland Species. Ii. Nutrient Uptake and Growth of Vesicular- Arbuscular Mycorrhizal Plants in a Semi-Natural Grassland. New Phytologist 120(4): 525-533, 1992

Humid tropical leguminous tree and pasture grass responsiveness to vesicular-arbuscular mycorrhizal infection. Mycorrhiza 4(5): 233-239, 1994

The effect of infection by a vesicular arbuscular mycorrhizal fungus on the gibberellin content of slender wheat grass. Plant Physiology 77(SUPPL 4): 79, 1985

Vesicular-arbuscular mycorrhizal fungi in earthworm casts and surrounding soil in relation to soil management of a semi-arid tropical Alfisol. Applied soil ecology: a section of Agriculture Ecosystems and Environment 3(2): 177-181, 1996

The effect of fungicides on vesicular-arbuscular mycorrhizal symbiosis: I. The effects on vesicular-arbuscular mycorrhizal fungi and plant growth. New Phytologist 125(1): 139-147, 1993