Abstract
The influence of arbuscular mycorrhizal fungi (AMF) on plant water status and growth under drought stress were investigated using soybean subjected to drought stress (40% of soil water-holding capacity (WHC)) and control conditions (60% WHC) either inoculated with AMF or uninoculated controls. Leaf temperature (Tleaf) and stomatal conductance (gs) were determined at 10:00, 12:00 and 18:00 on the harvest day. The effects of AMF on the water physiological status and growth of soybeans under drought stress were examined using thermal infrared imaging technology (TIIT). AMF inoculation under drought stress increased plant above- and below-ground biomass, nutritional status, and nitrogen, phosphorus and potassium uptake rates, and reduced plant root/shoot ratio. Monitoring Tleaf reflected the effect of AMF on plant water physiological status under drought stress. AMF inoculation resulted in a decline in Tleaf of 0.1–0.4 °C as water uptake proceeded compared with an increase of 0.2–1.4 °C in uninoculated controls. Thus, the effects of AMF on soybean drought resistance changed from positive to negative. AMF reduced plant Tleaf, promoted the accumulation of photosynthetic products, reduced malondialdehyde accumulation, and increased stomatal regulation and Tleaf. These preliminary results provide a basis for further studies on the effects of AMF on the water and growth status of plants under drought stress in arid areas.
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Claims 11
Claim · model-written summary
AMF inoculation increased aboveground and belowground biomass under drought.
- Taxon
- soybean
Glycine maxt0 - Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- above- and below-ground biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF inoculation under drought stress increased plant above- and below-ground biomass”
t0“soybean”
Claim · model-written summary
AMF inoculation increased nutritional status and nitrogen, phosphorus and potassium uptake rates under drought.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- nutritional status, and nitrogen, phosphorus and potassium uptake ratese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF inoculation under drought stress increased plant above- and below-ground biomass, nutritional status, and nitrogen, phosphorus and potassium uptake rates”
t0“soybean”
Claim · model-written summary
AMF inoculation reduced the root/shoot ratio under drought.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- plant root/shoot ratioe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF inoculation under drought stress increased plant above- and below-ground biomass, nutritional status, and nitrogen, phosphorus and potassium uptake rates, and reduced plant root/shoot ratio”
t0“soybean”
Claim · model-written summary
Leaf-temperature monitoring reflected the AMF effect on plant water status under drought.
- Taxon
- soybeanGlycine maxt0
- Interactor
- AMFe0symbiont
- Outcome
- plant water physiological statuse0
- Comparator
- AMFe0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monitoring Tleaf reflected the effect of AMF on plant water physiological status under drought stress”
t0“soybean”
Claim · model-written summary
With AMF inoculation, leaf temperature declined by 0.1–0.4 °C as water uptake proceeded.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- Tleafe0
- Direction
- declinee0
- Value
- 0.1–0.4 °Ce0
- Qualifier
- as water uptake proceedede0
- Comparator
- uninoculated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF inoculation resulted in a decline in Tleaf of 0.1–0.4 °C as water uptake proceeded compared with an increase of 0.2–1.4 °C in uninoculated controls”
t0“soybean”
Claim · model-written summary
Leaf temperature rose by 0.2–1.4 °C in uninoculated controls.
- Taxon
- soybeanGlycine maxt0
- Outcome
- increase of 0.2–1.4 °Ce0
- Direction
- increasee0
- Value
- 0.2–1.4 °Ce0
- Qualifier
- uninoculated controlse0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase of 0.2–1.4 °C in uninoculated controls”
t0“soybean”
Claim · model-written summary
The authors interpreted the AMF effect on soybean drought resistance as changing from positive to negative.
- Taxon
- soybeanGlycine maxe0
- Interactor
- AMFe0symbiont
- Outcome
- soybean drought resistancee0
- Direction
- changed from positive to negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of AMF on soybean drought resistance changed from positive to negative”
Claim · model-written summary
AMF promoted accumulation of photosynthetic products.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- accumulation of photosynthetic productse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF reduced plant Tleaf, promoted the accumulation of photosynthetic products, reduced malondialdehyde accumulation, and increased stomatal regulation and Tleaf”
t0“soybean”
Claim · model-written summary
AMF reduced malondialdehyde accumulation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- malondialdehyde accumulatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF reduced plant Tleaf, promoted the accumulation of photosynthetic products, reduced malondialdehyde accumulation”
t0“soybean”
Claim · model-written summary
AMF increased stomatal regulation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- AMFe1
- Interactor
- AMFe1symbiont
- Outcome
- stomatal regulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased stomatal regulation and Tleaf”
e1“AMF reduced plant Tleaf, promoted the accumulation of photosynthetic products, reduced malondialdehyde accumulation, and increased stomatal regulation and Tleaf”
t0“soybean”
Claim · model-written summary
AMF increased leaf temperature in the final reported result.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF reduced plant Tleaf, promoted the accumulation of photosynthetic products, reduced malondialdehyde accumulation, and increased stomatal regulation and Tleaf”
t0“soybean”
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