Abstract
The vesicular–arbuscular mycorrhizal fungus, Glomus intraradices, was found sporulating in citrus roots in an orchard soil. Dead root fragments of citrus accounted for a high proportion of the propagules in soil as measured by the most probable number technique. Sudan grass root fragments from pot cultures containing 7 and 94 chlamydospores of G. intraradices per milligram dry root had 11 and 184 (most probable number) propagules per milligram dry root, respectively. Inoculum densities of 20–40 mg of root fragments per 100 cm 3 of potting media resulted in 100% inoculation success of Carrizo citrange grown from seed. A decrease in root fragment density to as low as 2.5 mg per 100 cm 3 of medium reduced inoculation success and root colonization, but did not reduce growth and nutrient uptake by inoculated seedlings. The growth of vesicular–arbuscular mycorrhizal plants in a soilless medium amended with relatively insoluble rock phosphate was less than that of nonmycorrhizal plants fertilized with soluble phosphorus; copper uptake, however, was significantly increased by vesicular–arbuscular mycorrhizae. Root fragments stored up to 1 year under moist conditions did not lose colonization potential, whereas drying reduced colonization potential to near zero after 9 months.
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Claims 13
Claim · model-written summary
Glomus intraradices sporulated in citrus roots.
- Interactor
- Glomus intraradicesRhizophagus intraradicese0symbiont
- Outcome
- Glomus intraradices, was found sporulatinge0
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glomus intraradices, was found sporulating in citrus roots”
Claim · model-written summary
Dead citrus root fragments made up a high proportion of soil propagules.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dead root fragments of citrus accounted for a high proportion of the propagules in soil”
Claim · model-written summary
Fragments with 7 chlamydospores per mg dry root had 11 propagules per mg.
- Taxon
- Sudan grass
Sorghum ×drummondiit0 - Interactor
- G. intraradicesRhizophagus intraradicese0symbiont
- Outcome
- propagules per milligram dry roote0
- Value
- 11e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“containing 7 and 94 chlamydospores of G. intraradices per milligram dry root had 11 and 184 (most probable number) propagules per milligram dry root, respectively”
t0“Sudan grass root fragments”
Claim · model-written summary
Fragments with 94 chlamydospores per mg dry root had 184 propagules per mg.
- Taxon
- Sudan grassSorghum ×drummondiit0
- Interactor
- G. intraradicesRhizophagus intraradicese0symbiont
- Outcome
- propagules per milligram dry roote0
- Value
- 184e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“containing 7 and 94 chlamydospores of G. intraradices per milligram dry root had 11 and 184 (most probable number) propagules per milligram dry root, respectively”
t0“Sudan grass root fragments”
Claim · model-written summary
20–40 mg root fragments per 100 cm 3 medium achieved 100% Carrizo citrange inoculation.
- Taxon
- Carrizo citrange
_seedlings_01.jpg?width=60)
Citrus sinensis ×Citrus trifoliatae0 - Treatment
- 20–40 mg of root fragments per 100 cm 3 of potting mediae0
- Outcome
- inoculation successe0
- Value
- 100%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_seedlings_01.jpg?width=500)
Verbatim
e0“Inoculum densities of 20–40 mg of root fragments per 100 cm 3 of potting media resulted in 100% inoculation success of Carrizo citrange grown from seed”
Claim · model-written summary
Lower root fragment density reduced inoculation success.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A decrease in root fragment density to as low as 2.5 mg per 100 cm 3 of medium reduced inoculation success”
t0“citrus”
Claim · model-written summary
Lower root fragment density reduced root colonization.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A decrease in root fragment density to as low as 2.5 mg per 100 cm 3 of medium reduced inoculation success and root colonization”
t0“citrus”
Claim · model-written summary
Lower root fragment density did not reduce seedling growth.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but did not reduce growth and nutrient uptake by inoculated seedlings”
t0“citrus”
Claim · model-written summary
Lower root fragment density did not reduce nutrient uptake.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but did not reduce growth and nutrient uptake by inoculated seedlings”
t0“citrus”
Claim · model-written summary
Mycorrhizal plants with rock phosphate grew less than nonmycorrhizal plants given soluble phosphorus.
- Treatment
- relatively insoluble rock phosphatee0
- Outcome
- growthe0
- Direction
- less thane0
- Comparator
- nonmycorrhizal plants fertilized with soluble phosphoruse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of vesicular–arbuscular mycorrhizal plants in a soilless medium amended with relatively insoluble rock phosphate was less than that of nonmycorrhizal plants fertilized with soluble phosphorus”
t0“citrus”
Claim · model-written summary
Mycorrhizae significantly increased copper uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“copper uptake, however, was significantly increased by vesicular–arbuscular mycorrhizae”
t0“citrus”
Claim · model-written summary
Moist storage up to one year preserved root-fragment colonization potential.
- Treatment
- stored up to 1 year under moist conditionse0
- Outcome
- colonization potentiale0
- Direction
- did not losee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root fragments stored up to 1 year under moist conditions did not lose colonization potential”
t0“citrus”
Claim · model-written summary
Drying reduced colonization potential to near zero after nine months.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drying reduced colonization potential to near zero after 9 months”
t0“citrus”
The same questions in other papers
phosphorus · growth · CitrusResults differ
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →mycorrhiza · nutrient: content · CitrusResults agree
2 papers in the same direction as this paper
- positive
- positive
storage · disease · CitrusResults agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.