Abstract
The influence of arbuscular mycorrhizal fungi (AMF), Funneliformis mosseae and Rhizophagus intrara- dices, on plant growth, leaf water status, chlorophyll con- centration, photosynthesis, nutrient concentration, and fractal dimension (FD) characteristics of black locust (Robinia pseudoacacia L.) seedlings was studied in pot culture under well-watered, moderate drought stress, and severe drought stress treatments. Mycorrhizal seedlings had higher dry biomass, leaf relative water content (RWC), and water use efficiency (WUE) compared with non- mycorrhizal seedlings. Under all treatments, AMF coloni- zation notably enhanced net photosynthetic rate, stomatal conductance, and transpiration rate, but decreased inter- cellular CO2 concentration. Leaf chlorophyll a and total chlorophyll concentrations were higher in AM seedlings than those in non-AM seedlings although there was no significant difference between AMF species. AMF colo- nization improved leaf C, N, and P concentrations, but decreased C:N, C:P, and N:P ratios. Mycorrhizal seedlings had a larger FD value than non-mycorrhizal seedlings. The FD value was positively and significantly correlated to the plant growth parameters, photosynthesis, RWC, WUE, and nutrient concentration but negatively correlated to leaf/ stem ratio, C:N and C:P ratios, and intercellular CO2 concentration. We conclude that AMF lead to an improvement of growth performance of black locust seedlings under all growth conditions, including drought stress via improving leaf water status, chlorophyll con- centration, photosynthesis, and nutrient uptake. Moreover, FD technology proved to be a powerful non-destructive method to characterize the effect of AMF on the physiol- ogy of host plants during drought stress.
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Claims 11
Claim · model-written summary
Mycorrhizal seedlings had higher dry biomass, leaf relative water content, and water use efficiency.
- Taxon
- black locust (Robinia pseudoacacia L.)
Robinia pseudoacaciae0 - Treatment
- Mycorrhizale1
- Outcome
- dry biomass, leaf relative water content (RWC), and water use efficiency (WUE)e1
- Direction
- highere1
- Comparator
- non- mycorrhizal seedlingse1
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“Mycorrhizal seedlings had higher dry biomass, leaf relative water content (RWC), and water use efficiency (WUE) compared with non- mycorrhizal seedlings”
Claim · model-written summary
AMF colonization enhanced net photosynthetic rate, stomatal conductance, and transpiration rate under all treatments.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Treatment
- AMF coloni- zatione1
- Outcome
- net photosynthetic rate, stomatal conductance, and transpiration ratee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“Under all treatments, AMF coloni- zation notably enhanced net photosynthetic rate, stomatal conductance, and transpiration rate”
Claim · model-written summary
AMF colonization decreased intercellular CO2 concentration.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- inter- cellular CO2 concentratione1
- Direction
- decreasede1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“but decreased inter- cellular CO2 concentration”
Claim · model-written summary
AM seedlings had higher leaf chlorophyll a and total chlorophyll concentrations than non-AM seedlings.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Treatment
- AM seedlingse1
- Outcome
- Leaf chlorophyll a and total chlorophyll concentrationse1
- Direction
- highere1
- Comparator
- non-AM seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“Leaf chlorophyll a and total chlorophyll concentrations were higher in AM seedlings than those in non-AM seedlings”
Claim · model-written summary
Chlorophyll concentrations did not significantly differ between AMF species.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- difference between AMF speciese1
- Direction
- no significant differencee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“although there was no significant difference between AMF species”
Claim · model-written summary
AMF colonization improved leaf C, N, and P concentrations.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Treatment
- AMF colo- nizatione1
- Outcome
- leaf C, N, and P concentrationse1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“AMF colo- nization improved leaf C, N, and P concentrations”
Claim · model-written summary
AMF colonization decreased leaf C:N, C:P, and N:P ratios.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- C:N, C:P, and N:P ratiose1
- Direction
- decreasede1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“but decreased C:N, C:P, and N:P ratios”
Claim · model-written summary
Mycorrhizal seedlings had larger fractal dimension values than non-mycorrhizal seedlings.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Treatment
- Mycorrhizal seedlingse1
- Outcome
- FD valuee1
- Direction
- largere1
- Comparator
- non-mycorrhizal seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“Mycorrhizal seedlings had a larger FD value than non-mycorrhizal seedlings”
Claim · model-written summary
Fractal dimension was positively correlated with growth, photosynthesis, RWC, WUE, and nutrient concentration.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- plant growth parameters, photosynthesis, RWC, WUE, and nutrient concentratione1
- Direction
- positivelye1
- Comparator
- FD valuee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“The FD value was positively and significantly correlated to the plant growth parameters, photosynthesis, RWC, WUE, and nutrient concentration”
Claim · model-written summary
Fractal dimension was negatively correlated with leaf/stem ratio, C:N and C:P ratios, and intercellular CO2 concentration.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- leaf/ stem ratio, C:N and C:P ratios, and intercellular CO2 concentratione1
- Direction
- negativelye1
- Comparator
- FD valuee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“but negatively correlated to leaf/ stem ratio, C:N and C:P ratios, and intercellular CO2 concentration”
e2“The FD value was positively and significantly correlated”
Claim · model-written summary
FD technology characterized AMF effects on host plant physiology during drought stress.
- Taxon
- black locust (Robinia pseudoacacia L.)Robinia pseudoacaciae0
- Outcome
- characterize the effect of AMF on the physiol- ogy of host plants during drought stresse1
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“black locust (Robinia pseudoacacia L.) seedlings”
e1“FD technology proved to be a powerful non-destructive method to characterize the effect of AMF on the physiol- ogy of host plants during drought stress”
The same questions in other papers
mycorrhiza · nutrient: content · Robinia pseudoacacia (black locust)Results agree
1 paper in the same direction as this paper
- positive
mycorrhiza · physiology: photosynthesis · Robinia pseudoacacia (black locust)Results agree
1 paper in the same direction as this paper
- positive
mycorrhiza · physiology: water · Robinia pseudoacacia (black locust)Results agree
1 paper in the same direction as this paper
- positive
mycorrhiza · physiology: pigments · Robinia pseudoacacia (black locust)Results agree
1 paper in the same direction as this paper
- 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.