Abstract
Arbuscular mycorrhizal (AM) symbiosis alleviates drought stress in plants. However, the intimate mechanisms involved, as well as its effect on the production of signalling molecules associated with the host plant-AM fungus interaction remains largely unknown. In the present work, the effects of drought on lettuce and tomato plant performance and hormone levels were investigated in non-AM and AM plants. Three different water regimes were applied, and their effects were analysed over time. AM plants showed an improved growth rate and efficiency of photosystem II than non-AM plants under drought from very early stages of plant colonization. The levels of the phytohormone abscisic acid, as well as the expression of the corresponding marker genes, were influenced by drought stress in non-AM and AM plants. The levels of strigolactones and the expression of corresponding marker genes were affected by both AM symbiosis and drought. The results suggest that AM symbiosis alleviates drought stress by altering the hormonal profiles and affecting plant physiology in the host plant. In addition, a correlation between AM root colonization, strigolactone levels and drought severity is shown, suggesting that under these unfavourable conditions, plants might increase strigolactone production in order to promote symbiosis establishment to cope with the stress.
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Claims 9
Claim · model-written summary
AM plants had improved growth rate under drought compared with non-AM plants from early colonization.
- Taxon
- lettuce and tomato
Solanum lycopersicum
Lactuca sativat0 - Treatment
- AM plantse0
- Interactor
- AMe0symbiont
- Outcome
- growth ratee0
- Direction
- improvede0
- Qualifier
- under drought from very early stages of plant colonizatione0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM plants showed an improved growth rate and efficiency of photosystem II than non-AM plants under drought from very early stages of plant colonization.”
t0“lettuce and tomato”
Claim · model-written summary
AM plants had improved photosystem II efficiency under drought compared with non-AM plants.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- AM plantse0
- Interactor
- AMe0symbiont
- Outcome
- efficiency of photosystem IIe0
- Direction
- improvede0
- Qualifier
- under drought from very early stages of plant colonizatione0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM plants showed an improved growth rate and efficiency of photosystem II than non-AM plants under drought from very early stages of plant colonization.”
t0“lettuce and tomato”
Claim · model-written summary
Drought influenced abscisic acid levels in non-AM and AM plants.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- drought stresse0
- Interactor
- AMe0symbiont
- Outcome
- levels of the phytohormone abscisic acide0
- Qualifier
- in non-AM and AM plantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of the phytohormone abscisic acid, as well as the expression of the corresponding marker genes, were influenced by drought stress in non-AM and AM plants.”
t0“lettuce and tomato”
Claim · model-written summary
Drought influenced expression of abscisic acid marker genes in non-AM and AM plants.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- drought stresse0
- Interactor
- AMe0symbiont
- Outcome
- expression of the corresponding marker genese0
- Qualifier
- in non-AM and AM plantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of the phytohormone abscisic acid, as well as the expression of the corresponding marker genes, were influenced by drought stress in non-AM and AM plants.”
t0“lettuce and tomato”
Claim · model-written summary
AM symbiosis and drought affected strigolactone levels.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- AM symbiosis and droughte0
- Interactor
- AMe0symbiont
- Outcome
- levels of strigolactonese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of strigolactones and the expression of corresponding marker genes were affected by both AM symbiosis and drought.”
t0“lettuce and tomato”
Claim · model-written summary
AM symbiosis and drought affected corresponding marker gene expression.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- AM symbiosis and droughte0
- Interactor
- AMe0symbiont
- Outcome
- expression of corresponding marker genese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of strigolactones and the expression of corresponding marker genes were affected by both AM symbiosis and drought.”
t0“lettuce and tomato”
Claim · model-written summary
AM root colonization, strigolactone levels and drought severity were correlated.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Treatment
- drought severitye0
- Interactor
- AMe0symbiont
- Outcome
- strigolactone levelse0
- Qualifier
- AM root colonizatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a correlation between AM root colonization, strigolactone levels and drought severity is shown”
t0“lettuce and tomato”
Claim · model-written summary
The authors suggest mycorrhizal symbiosis alleviates drought stress by changing hormonal profiles and plant physiology.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Interactor
- AMe0symbiont
- Outcome
- alleviates drought stresse0
- Qualifier
- altering the hormonal profiles and affecting plant physiologye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results suggest that AM symbiosis alleviates drought stress by altering the hormonal profiles and affecting plant physiology in the host plant.”
t0“lettuce and tomato”
Claim · model-written summary
The authors suggest drought may increase strigolactone production to promote mycorrhizal symbiosis.
- Taxon
- lettuce and tomatoSolanum lycopersicumLactuca sativat0
- Outcome
- strigolactone productione0
- Direction
- increasee0
- Qualifier
- promote symbiosis establishment to cope with the stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants might increase strigolactone production in order to promote symbiosis establishment to cope with the stress.”
t0“lettuce and tomato”
The same questions in other papers
mycorrhiza · growth · Lactuca sativa (garden lettuce)Positive and negative results
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- positive
- no effect
- no effect
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See all 27 papers →mycorrhiza · growth · Solanum lycopersicum (tomato)Positive and negative results
126 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative
- positive
- no effect
- no effect
140 papers more in this group
See all 144 papers →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.