Nostocaceae 508 claims

family · order Nostocales · 39 taxa · NCBI Taxonomy ↗

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508 claims

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Observationobservedoriginal resultmeasured

Claim · model-written summary

Azolla leaf cavity hairs form wall ingrowths and have dense organelle-rich cytoplasm.

Taxon: AzollaAzollae0
Organ / stage: multicellular hairse0
Interactor: AnabaenaAnabaenae0symbiont
Outcome: labyrinthine wall ingrowths, and have dense cytoplasm with numerous mitochondria and abundant endoplasmic reticulume0

Verbatim

e0
“the multicellular hairs, in the Anabaena ‐containing leaf cavities of Azolla , produce labyrinthine wall ingrowths, and have dense cytoplasm with numerous mitochondria and abundant endoplasmic reticulum”
✓ located verbatim in the source · abstract, characters 41–243

Title

AN ULTRASTRUCTURAL STUDY OF THE AZOLLA, ANABAENA AZOLLAE RELATIONSHIP

J. G. DUCKETT; R. TOTH; S. L. SONI New Phytologist 1975. doi:10.1111/j.1469-8137.1975.tb01377.x

Other claims from this paper (1)

Observation Prominent Azolla wall ingrowths also occur without Anabaena.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Prominent Azolla wall ingrowths also occur without Anabaena.

Taxon: AzollaAzollat0
Interactor: AnabaenaAnabaenae0symbiont
Outcome: wall ingrowthse0
Qualifier: absence of Anabaenae0

Verbatim

e0
“Equally prominent wall ingrowths are also found in the absence of Anabaena .”
✓ located verbatim in the source · abstract, characters 405–481

t0
“AZOLLA, ANABAENA AZOLLAE RELATIONSHIP”
✓ located verbatim in the source · title, characters 32–69

Title

AN ULTRASTRUCTURAL STUDY OF THE AZOLLA, ANABAENA AZOLLAE RELATIONSHIP

J. G. DUCKETT; R. TOTH; S. L. SONI New Phytologist 1975. doi:10.1111/j.1469-8137.1975.tb01377.x

Other claims from this paper (1)

Observation Azolla leaf cavity hairs form wall ingrowths and have dense organelle-rich cytoplasm.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Acetylene reduction activity of Azolla was absent in fronds freed of the symbiotic alga and present in isolated Anabaena azollae.

Taxon: AzollaAzollae3
Treatment: fronds freed ofthe symbiotic algaee4
Interactor: Anabaena azollaeTrichormus azollaee4symbiont
Outcome: Acetylene reduction activitye4
Comparator: isolated Anabaena azollaee4

Not reportedDirection

Verbatim

e3
“The growth of Azolla for 35 days with nitrate or urea as a nitrogen source decreased the rate of acetylene reduction approximately 30% compared to controls grown on nitrogen”
✓ located verbatim in the source · abstract, characters 297–470

e4
“Acetylene reduction activity was absent in fronds freed ofthe symbiotic algae and present in isolated Anabaena azollae”
✓ located verbatim in the source · abstract, characters 1343–1461

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.820

Other claims from this paper (11)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Antibiotic treatment produced Azolla cultures free of Anabaena azollae.

Taxon: Azolla caroliniana Willd.Azolla carolinianae0
Treatment: treatment of Azolla fronds with a regimen of antibioticse0
Interactor: Anabaena azollaeTrichormus azollaee0symbiont
Outcome: free of the symbiotic blue-green alga, Anabaena azollaee0

Not reportedComparatorDirection

Verbatim

e0
“Cultures of Azolla caroliniana Willd. free of the symbiotic blue-green alga, Anabaena azollae, were obtained by treatment of Azolla fronds with a regimen of antibiotics.”
✓ located verbatim in the source · abstract, characters 0–169

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Isolated Anabaena azollae could not be grown independently.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Anabaena azollae was confined to the Azolla leaf cavity.

Taxon: AzollaAzollae0
Organ / stage: leaf cavitye0
Interactor: Anabaena azollaeTrichormus azollaee0symbiont
Outcome: confinement of the Anabaena azollae within the leaf cavitye0

Verbatim

e0
“the confinement of the Anabaena azollae within the leaf cavity of the Azolla”
✓ located verbatim in the source · abstract, characters 323–399

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Isolated Anabaena azollae could not be grown independently.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.

Taxon: AzollaAzollae0
Interactor: Anabaena azollaeTrichormus azollaee0symbiont
Outcome: isolation of pure preparations of Anabaena azollae and Azolla chloroplastse0

Not reportedComparatorValue

Verbatim

e0
“Procedures were established for the isolation of pure preparations of Anabaena azollae and Azolla chloroplasts.”
✓ located verbatim in the source · abstract, characters 401–512

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Observation Isolated Anabaena azollae could not be grown independently.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Isolated Anabaena azollae could not be grown independently.

Taxon: AzollaAzollat0
Interactor: Anabaena azollaeTrichormus azollaet0symbiont
Outcome: grow the isolated alga in independent culturee0

Verbatim

e0
“It has not yet been possible to grow the isolated alga in independent culture.”
✓ located verbatim in the source · abstract, characters 513–591

t0
“The Azolla, Anabaena azollae Relationship”
✓ located verbatim in the source · title, characters 0–41

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.

Taxon: AzollaAzollat0
Interactor: Anabaena azollaeTrichormus azollaet0symbiont
Outcome: both photosystemse0
Direction: repressede0
Comparator: freeliving Anabaena cylindricae0

Verbatim

e0
“In the algal fraction, both photosystems were repressed when compared to freeliving Anabaena cylindrica”
✓ located verbatim in the source · abstract, characters 816–919

t0
“The Azolla, Anabaena azollae Relationship”
✓ located verbatim in the source · title, characters 0–41

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Isolated Anabaena azollae could not be grown independently.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Observationobservedoriginal resultmeasured

Claim · model-written summary

The photosystem I to II ratio may be greater in Anabaena azollae.

Taxon: AzollaAzollat0
Interactor: Anabaena azollaeTrichormus azollaee0symbiont
Outcome: relative ratio of photosystem I to photosystem IIe0
Direction: greatere0
Qualifier: may be appreciablye0

Verbatim

e0
“the relative ratio of photosystem I to photosystem II may be appreciably greater in Anabaena azollae”
✓ located verbatim in the source · abstract, characters 925–1025

t0
“The Azolla, Anabaena azollae Relationship”
✓ located verbatim in the source · title, characters 0–41

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Isolated Anabaena azollae could not be grown independently.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.
Observation Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Anabaena azollae contributed an estimated 7.5 to 15% of total chlorophyll in symbiotic Azolla.

Taxon: AzollaAzollat0
Interactor: Anabaena azollaeTrichormus azollaee0symbiont
Outcome: total chlorophylle0
Value: 7.5 to 15%e0

Verbatim

e0
“in the symbiotic association, the Anabaena azollae accounts for from 7.5 to 15% of the total chlorophyll”
✓ located verbatim in the source · abstract, characters 1227–1331

t0
“The Azolla, Anabaena azollae Relationship”
✓ located verbatim in the source · title, characters 0–41

Title

The Azolla, Anabaena azollae Relationship

Gerald A. Peters; Berger C. Mayne PLANT PHYSIOLOGY 1974. doi:10.1104/pp.53.6.813

Other claims from this paper (8)

Intervention effect Antibiotic treatment produced Azolla cultures free of Anabaena azollae.
Observation Symbiont-free Azolla could be maintained only with combined nitrogen.
Observation Anabaena azollae was confined to the Azolla leaf cavity.
Method / resource Pure preparations of Anabaena azollae and Azolla chloroplasts were isolated.
Observation Isolated Anabaena azollae could not be grown independently.
Observation Both photosystems in the algal fraction were repressed relative to free-living Anabaena cylindrica.
Observation The photosystem I to II ratio may be greater in Anabaena azollae.
Observation Azolla chloroplasts were generally comparable to spinach chloroplasts.