Abstract
BACKGROUND: Application of insecticides in modern agriculture in order to enhance legume production has led to their accumulation in soils to levels that adversely affect soil microflora such as rhizobia and exert a negative impact on the physiological activities associated with them. This study was therefore designed to identify rhizobial strains expressing higher tolerance to insecticides fipronil and pyriproxyfen and synthesising plant growth regulators even amid insecticide stress. RESULTS: The fipronil- and pyriproxyfen-tolerant Rhizobium sp. strain MRL3 produced plant-growth-promoting substances in substantial amounts, both in the presence and in the absence of the insecticides. In general, both insecticides at recommended and higher rates reduced plant dry biomass, symbiotic properties, nutrient uptake and seed yield of lentil plants. Interestingly, when applied with any concentration of the two insecticides, Rhizobium sp. strain MRL3 significantly increased the measured parameters compared with plants grown in soils treated solely with the same concentration of each insecticide but without inoculant. CONCLUSION: This study suggests that Rhizobium strain MRL3 may be exploited as a bioinoculant to augment the efficiency of lentil exposed to insecticide-stressed soils.
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Claims 5
Claim · model-written summary
Rhizobium MRL3 produced growth promoting substances with or without insecticides.
- Taxon
- lentil (Lens esculentus)
Lens culinarist0 - Interactor
- Rhizobium sp. strain MRL3
Rhizobium sp.e0symbiont - Outcome
- Rhizobium sp. strain MRL3 produced plant-growth-promoting substancese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fipronil- and pyriproxyfen-tolerant Rhizobium sp. strain MRL3 produced plant-growth-promoting substances in substantial amounts, both in the presence and in the absence of the insecticides.”
t0“lentil (Lens esculentus)”
Claim · model-written summary
Fipronil and pyriproxyfen reduced lentil dry biomass and symbiotic properties.
- Taxon
- lentil plantsLens culinarise0
- Treatment
- both insecticides at recommended and higher ratese0
- Outcome
- plant dry biomass, symbiotic propertiese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, both insecticides at recommended and higher rates reduced plant dry biomass, symbiotic properties, nutrient uptake and seed yield of lentil plants.”
Claim · model-written summary
Fipronil and pyriproxyfen reduced lentil nutrient uptake and seed yield.
- Taxon
- lentil plantsLens culinarise0
- Treatment
- both insecticides at recommended and higher ratese0
- Outcome
- nutrient uptake and seed yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, both insecticides at recommended and higher rates reduced plant dry biomass, symbiotic properties, nutrient uptake and seed yield of lentil plants.”
Claim · model-written summary
Rhizobium MRL3 increased measured lentil parameters under both insecticides compared with uninoculated soil.
- Taxon
- lentil (Lens esculentus)Lens culinarist0
- Treatment
- Rhizobium sp. strain MRL3e0
- Interactor
- Rhizobium sp. strain MRL3Rhizobium sp.e0symbiont
- Outcome
- measured parameterse0
- Direction
- increasede0
- Comparator
- without inoculante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when applied with any concentration of the two insecticides, Rhizobium sp. strain MRL3 significantly increased the measured parameters compared with plants grown in soils treated solely with the same concentration of each insecticide but without inoculant.”
t0“lentil (Lens esculentus)”
Claim · model-written summary
The authors recommend Rhizobium MRL3 as a bioinoculant for lentil in insecticide stressed soil.
- Taxon
- lentilLens culinarise0
- Interactor
- Rhizobium strain MRL3e0symbiont
- Outcome
- may be exploited as a bioinoculant to augment the efficiency of lentile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium strain MRL3 may be exploited as a bioinoculant to augment the efficiency of lentil exposed to insecticide-stressed soils.”
The same questions in other papers
insecticide · yield · Lens culinaris (lentil)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
insecticide · growth · Lens culinaris (lentil)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
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.