Abstract
Three species of arbuscular mycorrhizal (AM) fungi, Glomus aggregatum Schenck and Smith emend. Koske, Glomus intraradices Schenck and Smith, and Glomus mosseae (Nicol. and Gerd.) Gerdemann and Trappe, were evaluated for their effectiveness to suppress the plant parasitic nematode Meloidogyne incognita (Kofoid and White) Chitwood in white clover (Trifolium repens L.) in a greenhouse study. Forty 1-day-old seedlings not colonized or colonized to the same extent by the fungi were transplanted into a growth medium uninoculated or inoculated with 10 000 M. incognita eggs. After 40 days of further growth, root mass, shoot mass, extent of galling, number of nematodes and nematode eggs in roots, and extent of mycorrhizal colonization of roots were determined. Growth of white clover was significantly stimulated by mycorrhizal colonization, and nematodes caused the greatest damage when plants were not colonized by the fungi. The degree to which mycorrhizal fungi reduced nematode damage varied with the species of mycorrhizal fungus; the extent of damage reduction ranged from 19 to 49.8%, based on loss of shoot mass. The effectiveness of the mycorrhizal fungal species in suppressing nematodes was not related to the degree to which they colonized roots or their effectiveness in enhancing host growth.Key words: AM colonization, galls, Glomus aggregatum, Glomus intraradices, Glomus mosseae, inoculum potential, Meloidogyne incognita, nematode eggs, phosphorus.
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Claims 4
Claim · model-written summary
Mycorrhizal colonization significantly stimulated white clover growth.
- Taxon
- white clover
Trifolium repense0 - Treatment
- mycorrhizal colonizatione0
- Outcome
- Growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of white clover was significantly stimulated by mycorrhizal colonization”
Claim · model-written summary
Nematodes caused the greatest damage in white clover without fungal colonization.
- Taxon
- white cloverTrifolium repense1
- Treatment
- nematodese0
- Outcome
- damagee0
- Direction
- greateste0
- Comparator
- not colonized by the fungie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nematodes caused the greatest damage when plants were not colonized by the fungi”
e1“white clover (Trifolium repens L.)”
Claim · model-written summary
Mycorrhizal fungal species differed in damage suppression, reducing shoot-mass loss by 19 to 49.8%.
- Taxon
- white cloverTrifolium repense1
- Treatment
- mycorrhizal fungie0
- Outcome
- nematode damagee0
- Direction
- reducede0
- Value
- 19 to 49.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The degree to which mycorrhizal fungi reduced nematode damage varied with the species of mycorrhizal fungus; the extent of damage reduction ranged from 19 to 49.8%, based on loss of shoot mass”
e1“white clover (Trifolium repens L.)”
Claim · model-written summary
Suppression of nematodes was unrelated to fungal root colonization or host growth enhancement.
- Taxon
- white cloverTrifolium repense1
- Organ / stage
- rootse0
- Outcome
- effectiveness of the mycorrhizal fungal species in suppressing nematodese0
- Direction
- not relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of the mycorrhizal fungal species in suppressing nematodes was not related to the degree to which they colonized roots or their effectiveness in enhancing host growth”
e1“white clover (Trifolium repens L.)”
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See all 22 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.