Abstract
The increase in the world population creates the need for sustainable food production and the use of synthetic fertilizers with growth-promoting bacteria. The objective of this research was to evaluate the acidity on the physiological and productive variables of wheat inoculated with Azospirillum brasilense and treated with osmoprotective additives. Combinations of A. brasilense, osmoprotectant and chemical treatment were evaluated in wheat seeds planted in contrasting acidity soil (pHs: 4.8 and 6.5). Evaluations of the physiological parameters were carried out in the foliar tissue (hydrogen peroxide content, superoxide dismutase activity, lipid peroxidation, content of chlorophyll a, b, and total and carotenoid and nitrate reductase enzyme activity) during the vegetative period and flowering. The grain yield components were evaluated after the physiological maturation. Plants grown in uncorrected soil acidity (pH: 4.8) showed higher lipid peroxidation. The other plants (pH: 6.5) have higher levels of nitrate reductase. Higher nitrate reductase activity was also observed in plants inoculated with A. brasilense. Therefore, in soil acidity 6.5, both A. brasilense isolate or combined with osmoprotective additive increased the grain yield. Nevertheless, the osmoprotectant application did not attenuate the effects of the chemical treatment of seeds and exerted a negative effect to inoculation with A. brasilense.
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Claims 7
Claim · model-written summary
Wheat grown in uncorrected soil acidity (pH 4.8) had higher lipid peroxidation than at pH 6.5.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- uncorrected soil acidity (pH: 4.8)e2
- Outcome
- lipid peroxidatione2
- Direction
- highere2
- Comparator
- pH: 6.5e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e2“Plants grown in uncorrected soil acidity (pH: 4.8) showed higher lipid peroxidation. The other plants (pH: 6.5) have higher levels of nitrate reductase”
Claim · model-written summary
Wheat at pH 6.5 had higher nitrate reductase levels than at uncorrected pH 4.8.
- Taxon
- wheatTriticum aestivume1
- Treatment
- pH: 6.5e2
- Outcome
- nitrate reductasee2
- Direction
- higher levelse2
- Comparator
- uncorrected soil acidity (pH: 4.8)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e2“Plants grown in uncorrected soil acidity (pH: 4.8) showed higher lipid peroxidation. The other plants (pH: 6.5) have higher levels of nitrate reductase”
Claim · model-written summary
Nitrate reductase activity was higher in wheat inoculated with A. brasilense.
- Taxon
- wheatTriticum aestivume1
- Treatment
- plants inoculated with A. brasilensee3
- Interactor
- A. brasilense
Azospirillum brasilensee3symbiont - Outcome
- nitrate reductase activitye3
- Direction
- Highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e3“Higher nitrate reductase activity was also observed in plants inoculated with A. brasilense”
Claim · model-written summary
A. brasilense isolate increased wheat grain yield at soil pH 6.5.
- Taxon
- wheatTriticum aestivume1
- Treatment
- A. brasilense isolatee4
- Interactor
- A. brasilenseAzospirillum brasilensee4symbiont
- Outcome
- grain yielde4
- Direction
- increasede4
- Setting
- in soil acidity 6.5e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e4“Therefore, in soil acidity 6.5, both A. brasilense isolate or combined with osmoprotective additive increased the grain yield”
Claim · model-written summary
Combined A. brasilense with osmoprotective additive increased wheat grain yield at soil pH 6.5.
- Taxon
- wheatTriticum aestivume1
- Treatment
- combined with osmoprotective additivee4
- Interactor
- A. brasilenseAzospirillum brasilensee4symbiont
- Outcome
- grain yielde4
- Direction
- increasede4
- Setting
- in soil acidity 6.5e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e4“Therefore, in soil acidity 6.5, both A. brasilense isolate or combined with osmoprotective additive increased the grain yield”
Claim · model-written summary
The osmoprotectant application did not attenuate the effects of the chemical seed treatment on wheat.
- Taxon
- wheatTriticum aestivume1
- Treatment
- osmoprotectant applicatione5
- Outcome
- effects of the chemical treatment of seedse5
- Direction
- did not attenuatee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e5“Nevertheless, the osmoprotectant application did not attenuate the effects of the chemical treatment of seeds and exerted a negative effect to inoculation with A. brasilense”
Claim · model-written summary
The osmoprotectant application had a negative effect on wheat inoculation with A. brasilense.
- Taxon
- wheatTriticum aestivume1
- Treatment
- osmoprotectant applicatione5
- Interactor
- A. brasilenseAzospirillum brasilensee5symbiont
- Outcome
- inoculation with A. brasilensee5
- Direction
- negative effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the physiological and productive variables of wheat inoculated with Azospirillum brasilense”
e5“Nevertheless, the osmoprotectant application did not attenuate the effects of the chemical treatment of seeds and exerted a negative effect to inoculation with A. brasilense”
The same questions in other papers
Azospirillum brasilense · yield · Triticum aestivum (wheat)Results differ
31 papers in the same direction as this paper · 4 in the opposite direction
- positive
- no effect
- no effect
32 papers more in this group
See all 36 papers →ph · physiology: oxidative · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
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.