Abstract
Abstract Nitrogen fixation and Fe‐deficiency stress response are two processes involving chemical reduction reactions in the root. It is possible that these processes could enhance one another in nodulated peanuts (Arachis hypogaea L.). The objective of this study was to determine the interactions of Fe nutritional stress, nodulation, and N2 fixation in peanuts. Plants were grown in solution culture which allowed careful control of levels of inorganic nitrogen (NO3 ‐) and Fe. To monitor plant Fe‐stress response, nutrient solution pH and reductant were measured daily. Nitrogenase activity was measured periodically by the acetylene reduction technique and Fe contents of leaf tissue at each sampling time were determined. Iron‐stress response was exhibited by peanut varieties 71–234 and Valencia grown in Fe‐free nutrient solutions and the response was stronger in nodulated than in non‐nodulated plants. Acetylene reduction was greatest in peanuts grown in Fe supplemented solutions.
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Claims 4
Claim · model-written summary
Peanut variety 71–234 showed iron stress response in iron-free solution.
- Taxon
- peanut
Arachis hypogaeae0 - Material
- 71–234e0
- Treatment
- Fe‐free nutrient solutionse0
- Outcome
- Iron‐stress responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron‐stress response was exhibited by peanut varieties 71–234 and Valencia grown in Fe‐free nutrient solutions and the response was stronger in nodulated than in non‐nodulated plants.”
Claim · model-written summary
Peanut variety Valencia showed iron stress response in iron-free solution.
- Taxon
- peanutArachis hypogaeae0
- Material
- Valenciae0
- Treatment
- Fe‐free nutrient solutionse0
- Outcome
- Iron‐stress responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron‐stress response was exhibited by peanut varieties 71–234 and Valencia grown in Fe‐free nutrient solutions and the response was stronger in nodulated than in non‐nodulated plants.”
Claim · model-written summary
Iron stress response was stronger in nodulated than non-nodulated peanuts.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- nodulatede0
- Outcome
- responsee0
- Direction
- strongere0
- Comparator
- non‐nodulated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron‐stress response was exhibited by peanut varieties 71–234 and Valencia grown in Fe‐free nutrient solutions and the response was stronger in nodulated than in non‐nodulated plants.”
Claim · model-written summary
Acetylene reduction was greatest in peanuts supplied iron.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- Fe supplemented solutionse0
- Outcome
- Acetylene reductione0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acetylene reduction was greatest in peanuts grown in Fe supplemented solutions.”
The same questions in other papers
iron atom · symbiosis · Arachis hypogaea (peanut)Results differ
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
2 papers more in this group
See all 6 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.