Abstract
We investigated the antioxidant response in French bean (Phaseolus vulgaris) seedlings in a symbiotic interaction with Arbuscular mycorrhiza fungi (AMF) under drought and studied both shooting and rooting tissues to detect the targeted tissue for AMF effects induced under drought. AMF and Non-AMF French bean seedlings were grown under control (well-watered: WW) and drought-stress (DS) conditions to study their tolerance response by assessing various physiological and biochemical parameters. AMF plants appeared to be sheltered from drought as seen by their higher leaf water potential and production of shoot-biomass. The AMF shoots accumulated less proline than those of non-AMF, while the opposite was observed in roots. Also, in DS AMF plants, lipid peroxides were 60 percent lower than in DS non - AMF plants. However, no significant correlation could be established between antioxidant enzyme activity and the low lipid oxidative damage in AMF plants due to which it appears that the symbiont fungus enhances osmotic adjustment first in the root system, which promotes a water potential gradient that favors entry of water into roots from the soil. This enables increased leaf water potential in DS-AMF plants keeping plants sheltered from oxidative damage, and all these collective effects increase the drought hardiness of seedlings.
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Claims 8
Claim · model-written summary
Mycorrhizal bean plants had higher leaf water potential under drought.
- Taxon
- French bean
Phaseolus vulgarise1 - Treatment
- AMFe1
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- leaf water potentiale0
- Direction
- highere0
- Qualifier
- drought-stress (DS) conditionse1
- Comparator
- Non-AMFe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF plants appeared to be sheltered from drought as seen by their higher leaf water potential and production of shoot-biomass”
e1“AMF and Non-AMF French bean seedlings were grown under control (well-watered: WW) and drought-stress (DS) conditions”
e2“symbiotic interaction with Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
Mycorrhizal bean plants produced more shoot biomass under drought.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- AMFe1
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- production of shoot-biomasse0
- Direction
- highere0
- Qualifier
- drought-stress (DS) conditionse1
- Comparator
- Non-AMFe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF plants appeared to be sheltered from drought as seen by their higher leaf water potential and production of shoot-biomass”
e1“AMF and Non-AMF French bean seedlings were grown under control (well-watered: WW) and drought-stress (DS) conditions”
e2“symbiotic interaction with Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
Mycorrhizal shoots accumulated less proline than nonmycorrhizal shoots.
- Taxon
- French beanPhaseolus vulgarise1
- Organ / stage
- shootse0
- Treatment
- AMFe0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- prolinee0
- Direction
- lesse0
- Comparator
- non-AMFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The AMF shoots accumulated less proline than those of non-AMF, while the opposite was observed in roots”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
Mycorrhizal roots accumulated more proline than nonmycorrhizal roots.
- Taxon
- French beanPhaseolus vulgarise1
- Organ / stage
- rootse0
- Treatment
- AMFe0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- prolinee0
- Direction
- oppositee0
- Comparator
- non-AMFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The AMF shoots accumulated less proline than those of non-AMF, while the opposite was observed in roots”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
Lipid peroxides were 60 percent lower in drought stressed mycorrhizal plants.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- AMFe0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- lipid peroxidese0
- Direction
- lowere0
- Value
- 60 percente0
- Qualifier
- DSe0
- Comparator
- non - AMFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in DS AMF plants, lipid peroxides were 60 percent lower than in DS non - AMF plants”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
Antioxidant enzyme activity was not significantly correlated with low lipid oxidative damage in mycorrhizal plants.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- AMFe0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- low lipid oxidative damagee0
- Qualifier
- antioxidant enzyme activitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant correlation could be established between antioxidant enzyme activity and the low lipid oxidative damage in AMF plants”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
The authors proposed that mycorrhiza first improves root osmotic adjustment, favoring water entry and leaf water potential.
- Taxon
- French beanPhaseolus vulgarise1
- Organ / stage
- root systeme0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- entry of water into roots from the soile0
- Qualifier
- osmotic adjustmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it appears that the symbiont fungus enhances osmotic adjustment first in the root system, which promotes a water potential gradient that favors entry of water into roots from the soil”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
Claim · model-written summary
The proposed water response shelters drought stressed plants from oxidative damage and increases seedling drought hardiness.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- DS-AMFe0
- Interactor
- Arbuscular mycorrhiza fungie2symbiont
- Outcome
- drought hardiness of seedlingse0
- Qualifier
- increased leaf water potentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This enables increased leaf water potential in DS-AMF plants keeping plants sheltered from oxidative damage, and all these collective effects increase the drought hardiness of seedlings”
e1“French bean (Phaseolus vulgaris) seedlings”
e2“Arbuscular mycorrhiza fungi (AMF)”
The same questions in other papers
mycorrhiza · yield · Phaseolus vulgaris (common bean)Positive and negative results
24 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
24 papers more in this group
See all 28 papers →mycorrhiza · physiology: water · Phaseolus vulgaris (common bean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
mycorrhiza · molecular: metabolites · Phaseolus vulgaris (common bean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.