Abstract
The characteristics of C2H4 formation and H2 evolution associated with 2,4-D induced root structures on wheat seedlings inoculated with Azospirillum brasilense Sp7 have been investigated. C2H4 formation and H2 evolution with 2,4-D treatment is several times greater than that by wheat seedlings inoculated with Azospirillum alone, as the result of the formation of a niche for azospirilla protected from O2. This increased C2H4 production in 2,4-D treated seedlings was proportional to C2H2 concentration and it was strongly inhibited by nitrite and ammonia. The inhibition increased with greater ammonia and nitrite concentration, but was reversible. The increased rate of C2H2 reduction activity was correlated with 15N enrichment in 2,4-D treated seedlings. These results confirm that the C2H4 formation was C2H2 dependent and represented the nitrogenase activity of A. brasilense associated with the 2,4-D induced root structures of wheat seedlings rather than C2H2 produced by plant tissues.
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 6
Claim · model-written summary
2,4-D increased C2H4 formation and H2 evolution severalfold versus Azospirillum inoculation alone.
- Taxon
- wheat seedlings
Triticum aestivume0 - Treatment
- 2,4-D treatmente0
- Interactor
- Azospirillum
Azospirillume0symbiont - Outcome
- C2H4 formation and H2 evolutione0
- Direction
- greatere0
- Value
- several timese0
- Comparator
- wheat seedlings inoculated with Azospirillum alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C2H4 formation and H2 evolution with 2,4-D treatment is several times greater than that by wheat seedlings inoculated with Azospirillum alone”
Claim · model-written summary
Increased C2H4 production was proportional to C2H2 concentration.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- 2,4-De0
- Compound
- C2H2e0
- Outcome
- C2H4 productione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This increased C2H4 production in 2,4-D treated seedlings was proportional to C2H2 concentration”
t0“Wheat”
Claim · model-written summary
Nitrite and ammonia strongly inhibited C2H4 production.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- nitrite and ammoniae0
- Outcome
- C2H4 productione1
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was strongly inhibited by nitrite and ammonia.”
e1“This increased C2H4 production in 2,4-D treated seedlings was proportional to C2H2 concentration”
t0“Wheat”
Claim · model-written summary
Inhibition increased with greater ammonia and nitrite concentrations and was reversible.
- Taxon
- WheatTriticum aestivumt0
- Compound
- ammonia and nitritee0
- Outcome
- inhibitione0
- Direction
- increasede0
- Qualifier
- reversiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibition increased with greater ammonia and nitrite concentration, but was reversible.”
t0“Wheat”
Claim · model-written summary
C2H2 reduction activity correlated with 15N enrichment in treated seedlings.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- 2,4-De0
- Compound
- 15Ne0
- Outcome
- C2H2 reduction activitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased rate of C2H2 reduction activity was correlated with 15N enrichment in 2,4-D treated seedlings.”
t0“Wheat”
Claim · model-written summary
The authors attributed C2H4 formation to Azospirillum nitrogenase associated with induced wheat root structures.
- Taxon
- wheat seedlingsTriticum aestivume0
- Organ / stage
- root structurese0
- Interactor
- A. brasilense
Azospirillum brasilensee0symbiont - Outcome
- C2H4 formatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the C2H4 formation was C2H2 dependent and represented the nitrogenase activity of A. brasilense associated with the 2,4-D induced root structures of wheat seedlings”
The same questions in other papers
ammonia · yield · Triticum aestivum (wheat)Positive and negative results
5 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
17 papers more in this group
See all 21 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.