Abstract
Melatonin is a new kind of plant growth regulator. The aim of this study was to figure out the effect of melatonin on arbuscular mycorrhizal (AM) symbiosis and heavy metal tolerance. A three-factor experiment was conducted to determine the effect of melatonin application on the growth, AM symbiosis, and stress tolerance of Medicago truncatula. A two-factor (AM inoculation and Pb stress) experiment was conducted to determine the effect of AM fungus on melatonin accumulation under Pb stress. AM plants under Pb stress had a higher melatonin accumulation than non-mycorrhizal (NM) plants under Pb stress. Acetylserotonin methyltransferase (ASMT) is the enzymatic reaction of the last step in melatonin synthesis. The accumulation of melatonin may be related to the expression of MtASMT. Melatonin application increased the relative expression of MtPT4 and AM colonization in AM plants. Melatonin application decreased Pb uptake with and without AM inoculation. Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress. These results indicated that melatonin application has positive effects on AM symbiosis and Pb stress tolerance under Pb stress. AM inoculation improve melatonin synthesis capacity under Pb stress. Melatonin application may improve AM plant growth by enhancing AM symbiosis, stimulating antioxidant response, and inhibiting Pb uptake. response of M. truncatula.
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Claims 11
Claim · model-written summary
AM plants under Pb stress had higher melatonin accumulation than non-mycorrhizal plants under Pb stress.
- Taxon
- Medicago truncatula
Medicago truncatulat1 - Treatment
- AM plantse0
- Interactor
- Rhizophagus irregularis
Rhizophagus irregularist0symbiont - Outcome
- melatonin accumulatione0
- Direction
- highere0
- Qualifier
- under Pb stresse0
- Comparator
- non-mycorrhizal (NM) plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM plants under Pb stress had a higher melatonin accumulation than non-mycorrhizal (NM) plants under Pb stress”
t0“Rhizophagus irregularis”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin application increased the relative expression of MtPT4 in Medicago truncatula.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- Melatonin applicatione0
- Gene
- MtPT4e0
- Outcome
- relative expressione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin application increased the relative expression of MtPT4 and AM colonization in AM plants”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin application increased AM colonization in AM plants of Medicago truncatula.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- Melatonin applicatione0
- Outcome
- AM colonizatione0
- Direction
- increasede0
- Qualifier
- in AM plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin application increased the relative expression of MtPT4 and AM colonization in AM plants”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin application decreased Pb uptake with and without AM inoculation.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- Melatonin applicatione0
- Outcome
- Pb uptakee0
- Direction
- decreasede0
- Qualifier
- with and without AM inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin application decreased Pb uptake with and without AM inoculation”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin application improved M. truncatula growth under Pb stress.
- Taxon
- M. truncatulaMedicago truncatulae0
- Treatment
- melatonin applicatione0
- Outcome
- growthe0
- Direction
- improvede0
- Qualifier
- with Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress”
Claim · model-written summary
AM inoculation improved M. truncatula growth under Pb stress.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- AM inoculatione0
- Interactor
- Rhizophagus irregularisRhizophagus irregularist0symbiont
- Outcome
- growthe0
- Direction
- improvede0
- Qualifier
- with Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress”
t0“Rhizophagus irregularis”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin application increased antioxidant response in M. truncatula under Pb stress.
- Taxon
- M. truncatulaMedicago truncatulae0
- Treatment
- melatonin applicatione0
- Outcome
- antioxidant responsee0
- Direction
- increasede0
- Qualifier
- with Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress”
Claim · model-written summary
AM inoculation increased antioxidant response in M. truncatula under Pb stress.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- AM inoculatione0
- Interactor
- Rhizophagus irregularisRhizophagus irregularist0symbiont
- Outcome
- antioxidant responsee0
- Direction
- increasede0
- Qualifier
- with Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress”
t0“Rhizophagus irregularis”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin may improve AM plant growth by enhancing AM symbiosis, stimulating antioxidant response and inhibiting Pb uptake.
- Taxon
- M. truncatulaMedicago truncatulae1
- Treatment
- Melatonin applicatione0
- Outcome
- AM plant growthe0
- Qualifier
- by enhancing AM symbiosis, stimulating antioxidant response, and inhibiting Pb uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin application may improve AM plant growth by enhancing AM symbiosis, stimulating antioxidant response, and inhibiting Pb uptake”
e1“Both melatonin application and AM inoculation improved M. truncatula growth and increased antioxidant response with Pb stress”
Claim · model-written summary
AM inoculation improved melatonin synthesis capacity under Pb stress.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Treatment
- AM inoculatione0
- Interactor
- Rhizophagus irregularisRhizophagus irregularist0symbiont
- Outcome
- melatonin synthesis capacitye0
- Direction
- improvee0
- Qualifier
- under Pb stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM inoculation improve melatonin synthesis capacity under Pb stress”
t0“Rhizophagus irregularis”
t1“Medicago truncatula”
Claim · model-written summary
Melatonin accumulation may be related to MtASMT expression in Medicago truncatula.
- Taxon
- Medicago truncatulaMedicago truncatulat1
- Gene
- MtASMTe0
- Outcome
- accumulation of melatonine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of melatonin may be related to the expression of MtASMT”
t1“Medicago truncatula”
The same questions in other papers
melatonin · growth · Medicago truncatula (barrel medic)Results agree
1 paper in the same direction as this paper
- positive
inoculation · Rhizophagus irregularis · Medicago truncatula (barrel medic)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
mycorrhiza · Rhizophagus irregularis · Medicago truncatula (barrel medic)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.