Abstract
The development of primary root nodules on the field bean (Vicia faba L.) grown at 10 and 18 °C was examined. The sequence of anatomical changes observed was the same in both temperature regimes. Nodules developed much more slowly at 10 °C and the nodules were much larger when corresponding anatomical changes occurred. Primary root nodules eventually ceased growth in both temperature regimes but ultimate nodule volume was nearly twice as great as 10 °C as at 18 °C. The larger size did not compensate for the lower specific nitrogenase activity of cold-grown nodules: nitrogen fixation (acetylene reduction) rates on a whole plant basis were much lower at 10 °C than at 18 °C. There was no difference in the total number of primary root nodules in the two temperature regimes but their distribution was biased towards the upper part of the root and the epicotyl at 18 °C.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Primary root nodules developed much more slowly at 10 °C than at 18 °C.
- Taxon
- Vicia faba
Vicia fabat0 - Treatment
- 10 °Ce1
- Outcome
- development of primary root nodulese0
- Direction
- much more slowlye1
- Comparator
- 18 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of primary root nodules on the field bean (Vicia faba L.) grown at 10 and 18 °C was examined”
e1“Nodules developed much more slowly at 10 °C and the nodules were much larger when corresponding anatomical changes occurred”
t0“Vicia faba L.”
Claim · model-written summary
Nodules were much larger at 10 °C than at 18 °C when corresponding anatomical changes occurred.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- 10 °Ce1
- Outcome
- nodulese1
- Direction
- much largere1
- Qualifier
- when corresponding anatomical changes occurrede1
- Comparator
- 18 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of primary root nodules on the field bean (Vicia faba L.) grown at 10 and 18 °C was examined”
e1“Nodules developed much more slowly at 10 °C and the nodules were much larger when corresponding anatomical changes occurred”
t0“Vicia faba L.”
Claim · model-written summary
Ultimate nodule volume at 10 °C was nearly twice that at 18 °C.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- 10 °Ce2
- Outcome
- ultimate nodule volumee2
- Direction
- nearly twice as greate2
- Value
- nearly twicee2
- Comparator
- 18 °Ce2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“ultimate nodule volume was nearly twice as great as 10 °C as at 18 °C”
t0“Vicia faba L.”
Claim · model-written summary
Primary root nodules ceased growth in both temperature regimes.
- Taxon
- Vicia fabaVicia fabat0
- Outcome
- ceased growthe3
- Qualifier
- in both temperature regimese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Primary root nodules eventually ceased growth in both temperature regimes”
t0“Vicia faba L.”
Claim · model-written summary
Total number of primary root nodules did not differ between the two temperature regimes.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- temperature regimese4
- Outcome
- total number of primary root nodulese4
- Direction
- no differencee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“There was no difference in the total number of primary root nodules in the two temperature regimes”
t0“Vicia faba L.”
Claim · model-written summary
Nodule distribution at 18 °C was biased towards the upper part of the root and the epicotyl.
- Taxon
- Vicia fabaVicia fabat0
- Organ / stage
- the upper part of the root and the epicotyle5
- Outcome
- distributione5
- Direction
- biased towardse5
- Qualifier
- at 18 °Ce5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“their distribution was biased towards the upper part of the root and the epicotyl at 18 °C”
t0“Vicia faba L.”
Claim · model-written summary
Cold-grown nodules had lower specific nitrogenase activity.
- Taxon
- Vicia fabaVicia fabae0
- Organ / stage
- nodulese6
- Treatment
- cold-growne6
- Outcome
- specific nitrogenase activitye6
- Direction
- lowere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The larger size did not compensate for the lower specific nitrogenase activity of cold-grown nodules”
e0“The development of primary root nodules on the field bean (Vicia faba L.) grown at 10 and 18 °C was examined”
Claim · model-written summary
Nitrogen fixation (acetylene reduction) rates on a whole plant basis were much lower at 10 °C than at 18 °C.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- 10 °Ce7
- Outcome
- nitrogen fixation (acetylene reduction) ratese7
- Direction
- much lowere7
- Qualifier
- on a whole plant basise7
- Comparator
- 18 °Ce7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“nitrogen fixation (acetylene reduction) rates on a whole plant basis were much lower at 10 °C than at 18 °C”
t0“Vicia faba L.”
Claim · model-written summary
The sequence of anatomical changes was the same in both temperature regimes.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- temperature regimese0
- Outcome
- sequence of anatomical changese0
- Direction
- was the samee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sequence of anatomical changes observed was the same in both temperature regimes”
t0“Vicia faba L.”