Abstract
One strategy to improve olive (Olea europaea ) tree drought tolerance is through the symbiosis of arbuscular mycorrhizal fungi (AMF), which helps alleviate water deficit through a combination of morphophysiological effects. Cuttings of olive varieties Arbequina (A) and Barnea (B) were grown with (+AMF) or without (-AMF) inoculum in the olive grove rhizosphere soil. One year after establishment, pots were exposed to four different water regimes: (1) control (100% of crop evapotranspiration); (2) short-period drought (20days); (3) long-period drought (25days); and (4) rewatering (R). To evaluate the influence of AMF on tolerance to water stress, stem water potential, stomatal conductance and the biomarkers for water deficit malondialdehyde, proline, soluble sugars, phenols, and flavonoids were evaluated at the end of the irrigation regimes. Stem water potential showed higher values in A(+) and B(+) in all water conditions, and the opposite was true for stomatal conductance. For proline and soluble sugars, the stem water potential trend is repeated with some exceptions. AMF inoculum spore communities from A(+ and -) and B(+ and -) were characterised at the morphospecies level in terms of richness and abundance. Certain morphospecies were identified as potential drought indicators. These results highlight that the benefits of symbiotic relationships between olive and native AMF can help to mitigate the effects of abiotic stress in soils affected by drought.
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Claims 6
Claim · model-written summary
AMF inoculation yielded higher stem water potential in Arbequina across water conditions.
- Taxon
- olive
Olea europaeae1 - Material
- Arbequinae1
- Treatment
- with (+AMF)e1
- Interactor
- AMFe1symbiont
- Outcome
- Stem water potentiale0
- Direction
- highere0
- Comparator
- without (-AMF) inoculume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem water potential showed higher values in A(+) and B(+) in all water conditions”
e1“Cuttings of olive varieties Arbequina (A) and Barnea (B) were grown with (+AMF) or without (-AMF) inoculum”
Claim · model-written summary
AMF inoculation yielded higher stem water potential in Barnea across water conditions.
- Taxon
- oliveOlea europaeae1
- Material
- Barneae1
- Treatment
- with (+AMF)e1
- Interactor
- AMFe1symbiont
- Outcome
- Stem water potentiale0
- Direction
- highere0
- Comparator
- without (-AMF) inoculume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem water potential showed higher values in A(+) and B(+) in all water conditions”
e1“Cuttings of olive varieties Arbequina (A) and Barnea (B) were grown with (+AMF) or without (-AMF) inoculum”
Claim · model-written summary
AMF inoculation yielded lower stomatal conductance in Arbequina across water conditions.
- Taxon
- oliveOlea europaeae1
- Material
- Arbequinae1
- Treatment
- with (+AMF)e1
- Interactor
- AMFe1symbiont
- Outcome
- stomatal conductancee0
- Direction
- lowerinferrede0
- Comparator
- without (-AMF) inoculume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem water potential showed higher values in A(+) and B(+) in all water conditions, and the opposite was true for stomatal conductance”
e1“Cuttings of olive varieties Arbequina (A) and Barnea (B) were grown with (+AMF) or without (-AMF) inoculum”
Claim · model-written summary
AMF inoculation yielded lower stomatal conductance in Barnea across water conditions.
- Taxon
- oliveOlea europaeae1
- Material
- Barneae1
- Treatment
- with (+AMF)e1
- Interactor
- AMFe1symbiont
- Outcome
- stomatal conductancee0
- Direction
- lowerinferrede0
- Comparator
- without (-AMF) inoculume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem water potential showed higher values in A(+) and B(+) in all water conditions, and the opposite was true for stomatal conductance”
e1“Cuttings of olive varieties Arbequina (A) and Barnea (B) were grown with (+AMF) or without (-AMF) inoculum”
Claim · model-written summary
Proline and soluble sugars generally followed the stem water potential trend, with exceptions.
- Taxon
- oliveOlea europaeae1
- Interactor
- arbuscular mycorrhizal fungie2symbiont
- Outcome
- proline and soluble sugarse0
- Qualifier
- with some exceptionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For proline and soluble sugars, the stem water potential trend is repeated with some exceptions”
e1“olive (Olea europaea )”
e2“arbuscular mycorrhizal fungi (AMF)”
Claim · model-written summary
Certain AMF morphospecies were identified as potential drought indicators.
- Taxon
- oliveOlea europaeae1
- Interactor
- AMFe2symbiont
- Outcome
- potential drought indicatorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Certain morphospecies were identified as potential drought indicators”
e1“olive (Olea europaea )”
e2“AMF inoculum spore communities”
The same questions in other papers
mycorrhiza · physiology: water · Olea europaea (common olive)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.