Abstract
The development of spores and sporocarps was studied in two isolates of a species of Glomus collected in Western Australia. The isolates, which had been maintained in pot culture, differed slightly in the size range of spores and in the relationship between spore size and the development of the peridium. Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys. The effect of phosphorus supply on the anatomy of mycorrhizas formed by this fungus and T. subterraneum was studied with time. Phosphorus supply had no effect on the formation of arbuscles, the density of hyphae within infected roots, or the morphology of the branching pattern of the endophyte hyphae within the root. However, phosphate added above that required for maximum plant yield eliminated vesicle formation. Anatomical characteristics of the mycorrhizas changed little with time except for arbuscle number, which decreased markedly between 29 and 50 days after sowing. We concluded that the anatomy of vesicular arbuscular mycorrhizas formed by a particular endophyte species grown under a range of conditions may not be as variable as has been generally assumed. There is scope for identification of species of endophyte within plant roots. Furthermore, some features of infection morphology could prove to be useful for taxonomic purposes.
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Claims 7
Claim · model-written summary
Glomus isolates differed slightly in spore size and peridium relation.
- Taxon
- Trifolium subterraneum
Trifolium subterraneume1 - Outcome
- size range of sporese0
GlomusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isolates, which had been maintained in pot culture, differed slightly in the size range of spores and in the relationship between spore size and the development of the peridium.”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Mycorrhizal anatomy was essentially alike among three pasture species.
- Taxon
- Trifolium subterraneumTrifolium subterraneume0
- Outcome
- Anatomical characteristics of mycorrhizase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply.”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Nitrogen deficient Trifolium had slightly wider hyphae.
- Taxon
- T. subterraneumTrifolium subterraneume0
- Treatment
- nitrogen-deficiente0
- Outcome
- hyphaee0
- Direction
- widere0
- Comparator
- nitrogen-adequatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Nitrogen deficient Erodium had slightly wider hyphae.
- Taxon
- E. botrys
Erodium botryse0 - Treatment
- nitrogen-deficiente0
- Outcome
- hyphaee0
- Direction
- widere0
- Comparator
- nitrogen-adequatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Phosphorus supply did not change arbuscle formation or hyphal density or branching.
- Taxon
- T. subterraneumTrifolium subterraneume1
- Treatment
- Phosphorus supplye0
- Outcome
- formation of arbuscles, the density of hyphae within infected roots, or the morphology of the branching patterne0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus supply had no effect on the formation of arbuscles, the density of hyphae within infected roots, or the morphology of the branching pattern of the endophyte hyphae within the root.”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Excess phosphate eliminated vesicle formation.
- Taxon
- T. subterraneumTrifolium subterraneume1
- Treatment
- phosphate added above that required for maximum plant yielde0
- Outcome
- vesicle formatione0
- Direction
- eliminatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate added above that required for maximum plant yield eliminated vesicle formation”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”
Claim · model-written summary
Arbuscle number markedly declined from 29 to 50 days.
- Taxon
- T. subterraneumTrifolium subterraneume1
- Outcome
- arbuscle numbere0
- Direction
- decreasede0
- Qualifier
- between 29 and 50 days after sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“arbuscle number, which decreased markedly between 29 and 50 days after sowing”
t0“Mycorrhizas Formed by a Species of Glomus”
e1“Anatomical characteristics of mycorrhizas of three pasture species (Trifolium subterraneum, Erodium botrys and Lolium rigidum) formed with this species of Glomus were essentially the same and were largely unaffected by nitrogen supply. The hyphae in nitrogen-deficient plants were slightly wider than those in nitrogen-adequate plants of T. subterraneum and E. botrys.”