Abstract
To examine the effects of soil microbial population on mycorrhizal development and function, Eucalyptus urophylla seedlings were inoculated with two Pisolithus tinctorius isolates and grown in sterile, partly sterile and non-sterile soil. The two isolates of Pisolithus were an effective isolate (H445) collected from under eucalypts in Australia and an isolate (H615) collected from under eucalypts in the Philippines. Soils used were infertile acid soils collected from field sites in Pangasinan, Luzon and Surigao, Mindanao. In both soils, the Australian Pisolithus H445 improved the growth of E. urophylla seedlings more than Philippine isolate H615. The uninoculated seedlings exhibited stunted growth typical of P deficiency. Height at 8 weeks was significantly taller in sterile than in non-sterile soil. A significant interaction effect of inoculation and soil sterilization on height at harvest was observed only in Surigao soil. Soil sterilization had a varied effect on mycorrhizal formation. In Pangasinan soil, root colonization by H445 was significantly greater in non-sterile soil than in sterile soil. Whereas in Surigao soil, root colonization was significantly reduced by 54% from partly sterile to non-sterile soil. On the other hand, H615 showed significant mycorrhizal colonization in non-sterile soil compared from those in partly sterile and sterile soils. The degree of infection did not necessarily correspond to growth promotion in E. urophylla seedlings. These results indicate that the performance of the H445 was markedly affected by the microbial flora of the two soils. Thus, its potential use in the Philippines needs to be thoroughly tested in the field before its widespread use in any inoculation program. Key words: Pisolithus tinctorius/Laccaria fraterna/Pinus patula/Inoculum/Seedlings/Growth.
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Claims 10
Claim · model-written summary
H445 improved Eucalyptus growth more than H615 in both soils.
- Taxon
- E. urophylla
Eucalyptus urophyllae0 - Treatment
- Australian Pisolithus H445e0
- Interactor
- Pisolithus H445e0symbiont
- Outcome
- growth of E. urophylla seedlingse0
- Direction
- moree0
- Comparator
- Philippine isolate H615e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both soils, the Australian Pisolithus H445 improved the growth of E. urophylla seedlings more than Philippine isolate H615”
Claim · model-written summary
Uninoculated seedlings showed stunted growth typical of phosphorus deficiency.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Outcome
- stunted growthe0
- Qualifier
- P deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The uninoculated seedlings exhibited stunted growth typical of P deficiency”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
Seedlings were significantly taller at eight weeks in sterile than non-sterile soil.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Treatment
- sterilee0
- Outcome
- Height at 8 weekse0
- Direction
- tallere0
- Comparator
- non-sterile soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Height at 8 weeks was significantly taller in sterile than in non-sterile soil”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
In Surigao soil, inoculation and soil sterilization interacted significantly for harvest height.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Treatment
- inoculation and soil sterilizatione0
- Outcome
- height at harveste0
- Setting
- Surigao soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant interaction effect of inoculation and soil sterilization on height at harvest was observed only in Surigao soil”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
H445 root colonization was greater in non-sterile than sterile Pangasinan soil.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Treatment
- non-sterile soile0
- Interactor
- H445e0symbiont
- Outcome
- root colonization by H445e0
- Direction
- greatere0
- Comparator
- sterile soile0
- Setting
- Pangasinan soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Pangasinan soil, root colonization by H445 was significantly greater in non-sterile soil than in sterile soil”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
H445 root colonization fell 54% from partly sterile to non-sterile Surigao soil.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Treatment
- non-sterile soile0
- Outcome
- root colonizatione0
- Direction
- reducede0
- Value
- 54%e0
- Comparator
- partly sterilee0
- Setting
- Surigao soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Surigao soil, root colonization was significantly reduced by 54% from partly sterile to non-sterile soil”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
H615 colonization was significantly greater in non-sterile than partly sterile and sterile soils.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Treatment
- non-sterile soile0
- Interactor
- H615e0symbiont
- Outcome
- mycorrhizal colonizatione0
- Comparator
- partly sterile and sterile soilse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H615 showed significant mycorrhizal colonization in non-sterile soil compared from those in partly sterile and sterile soils”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
Mycorrhizal colonization did not necessarily correspond to growth promotion.
- Taxon
- E. urophyllaEucalyptus urophyllae0
- Interactor
- infectione0symbiont
- Outcome
- growth promotione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The degree of infection did not necessarily correspond to growth promotion in E. urophylla seedlings”
Claim · model-written summary
H445 performance varied with soil microbial flora.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Interactor
- H445e0symbiont
- Outcome
- performance of the H445e0
- Qualifier
- microbial flora of the two soilse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the performance of the H445 was markedly affected by the microbial flora of the two soils”
t0“EUCALYPTUS UROPHYLLA”
Claim · model-written summary
The authors recommend field testing H445 in the Philippines before widespread inoculation.
- Taxon
- Eucalyptus urophyllaEucalyptus urophyllat0
- Outcome
- thoroughly tested in the field before its widespread use in any inoculation programe0
- Setting
- Philippinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its potential use in the Philippines needs to be thoroughly tested in the field before its widespread use in any inoculation program”
t0“EUCALYPTUS UROPHYLLA”
The same questions in other papers
Pisolithus · growth · Eucalyptus urophyllaResults agree
2 papers in the same direction as this paper
- positive
- positive
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.