Abstract
The frequency of soil drying-rewetting cycles is predicted to increase under future global climate change, and arbuscular mycorrhizal fungi (AMF) are symbiotic with most plants. However, it remains unknown how AMF affect plant growth under different frequencies of soil drying-rewetting cycles. We subjected a clonal wetland plant Phragmites australis to three frequencies of drying-rewetting cycles (1, 2, or 4 cycles), two nutrient treatments (with or without), and two AMF treatments (with or without) for 64 days. AMF promoted the growth of P. australis, especially in the 2 cycles of the drying-rewetting treatment. AMF had a significant positive effect on leaf mass and number of ramets in the 2 cycles of the drying-rewetting treatment with nutrient addition. In the 2 cycles of drying-rewetting treatment without nutrient addition, AMF increased leaf area and decreased belowground to aboveground biomass ratio. These results indicate that AMF may assist P. australis in coping with medium frequency of drying-rewetting cycles, and provide theoretical guidance for predicting how wetland plants respond to future global climate change.
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Claims 4
Claim · model-written summary
AMF promoted Phragmites growth, especially under two drying and rewetting cycles.
- Taxon
- P. australis
Phragmites australise0 - Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- growthe0
- Direction
- promotede0
- Qualifier
- 2 cycles of the drying-rewetting treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF promoted the growth of P. australis, especially in the 2 cycles of the drying-rewetting treatment.”
Claim · model-written summary
With nutrient addition and two cycles, AMF increased leaf mass and ramet number.
- Taxon
- Phragmites australisPhragmites australise1
- Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- leaf mass and number of rametse0
- Direction
- positive effecte0
- Qualifier
- 2 cycles of the drying-rewetting treatment with nutrient additione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF had a significant positive effect on leaf mass and number of ramets in the 2 cycles of the drying-rewetting treatment with nutrient addition.”
e1“a clonal wetland plant Phragmites australis”
Claim · model-written summary
Without nutrient addition and under two cycles, AMF increased leaf area.
- Taxon
- Phragmites australisPhragmites australise1
- Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- leaf areae0
- Direction
- increasede0
- Qualifier
- without nutrient additione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the 2 cycles of drying-rewetting treatment without nutrient addition, AMF increased leaf area and decreased belowground to aboveground biomass ratio.”
e1“a clonal wetland plant Phragmites australis”
Claim · model-written summary
Without nutrient addition and under two cycles, AMF decreased the belowground to aboveground biomass ratio.
- Taxon
- Phragmites australisPhragmites australise1
- Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- belowground to aboveground biomass ratioe0
- Direction
- decreasede0
- Qualifier
- without nutrient additione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the 2 cycles of drying-rewetting treatment without nutrient addition, AMF increased leaf area and decreased belowground to aboveground biomass ratio.”
e1“a clonal wetland plant Phragmites australis”
The same questions in other papers
mycorrhiza · growth · Phragmites australis (common reed)Results agree
2 papers in the same direction as this paper
- 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.