Abstract
Melatonin (MT) is a vital hormone factor in plant growth and development, yet its potential to influence the graft union healing process has not been reported. In this study, we examined the effects of MT on the healing of oriental melon scion grafted onto squash rootstock. The studies indicate that the exogenous MT treatment promotes the lignin content of oriental melon and squash stems by increasing the enzyme activities of hydroxycinnamoyl CoA ligase (HCT), hydroxy cinnamaldehyde dehydrogenase (HCALDH), caffeic acid/5-hydroxy-conifer aldehyde O-methyltransferase (COMT), caffeoyl-CoA O-methyltransferase (CCoAOMT), phenylalanine ammonia-lyase (PAL), 4-hydroxycinnamate CoA ligase (4CL), and cinnamyl alcohol dehydrogenase (CAD). Using the oriental melon and squash treated with the exogenous MT to graft, the connection of oriental melon scion and squash rootstock was more efficient and faster due to higher expression of wound-induced dedifferentiation 1 (WIND1), cyclin-dependent kinase (CDKB1;2), target of monopteros 6 (TMO6), and vascular-related NAC-domain 7 (VND7). Further research found that the exogenous MT increased the lignin content of the oriental melon scion stem by regulating CmCAD1 expression, and then accelerated the graft healing process. In addition, the root growth of grafted seedlings treated with the exogenous MT was more vigorous.
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Claims 8
Claim · model-written summary
Melatonin increased lignin content in oriental melon stems.
- Taxon
- oriental melon
.jpg?width=60)
Cucumis meloe0 - Organ / stage
- stemse0
- Treatment
- exogenous MT treatmente0
- Outcome
- lignin contente0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the exogenous MT treatment promotes the lignin content of oriental melon and squash stems”
Claim · model-written summary
Melatonin increased lignin content in squash stems.
- Taxon
- squashe0
- Organ / stage
- stemse0
- Treatment
- exogenous MT treatmente0
- Outcome
- lignin contente0
- Direction
- promotese0
Not reportedComparator
Verbatim
e0“the exogenous MT treatment promotes the lignin content of oriental melon and squash stems”
Claim · model-written summary
Melatonin increased the activities of seven lignin-related enzymes.
- Taxon
- oriental melonCucumis melot0
- Treatment
- Exogenous Melatonin Applicationt0
- Outcome
- enzyme activitiese0
- Direction
- increasinge0
- Qualifier
- hydroxycinnamoyl CoA ligase (HCT), hydroxy cinnamaldehyde dehydrogenase (HCALDH), caffeic acid/5-hydroxy-conifer aldehyde O-methyltransferase (COMT), caffeoyl-CoA O-methyltransferase (CCoAOMT), phenylalanine ammonia-lyase (PAL), 4-hydroxycinnamate CoA ligase (4CL), and cinnamyl alcohol dehydrogenase (CAD)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by increasing the enzyme activities of hydroxycinnamoyl CoA ligase (HCT), hydroxy cinnamaldehyde dehydrogenase (HCALDH), caffeic acid/5-hydroxy-conifer aldehyde O-methyltransferase (COMT), caffeoyl-CoA O-methyltransferase (CCoAOMT), phenylalanine ammonia-lyase (PAL), 4-hydroxycinnamate CoA ligase (4CL), and cinnamyl alcohol dehydrogenase (CAD).”
t0“Exogenous Melatonin Application Accelerated the Healing Process of Oriental Melon Grafted onto Squash by Promoting Lignin Accumulation”
Claim · model-written summary
Melatonin-treated melon and squash grafts connected more efficiently and faster.
- Taxon
- oriental melonCucumis meloe0
- Treatment
- exogenous MTe0
- Outcome
- connection of oriental melon scion and squash rootstocke0
- Direction
- more efficient and fastere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using the oriental melon and squash treated with the exogenous MT to graft, the connection of oriental melon scion and squash rootstock was more efficient and faster”
Claim · model-written summary
Higher expression of four wound and vascular genes was associated with improved graft connection.
- Taxon
- oriental melonCucumis melot0
- Gene
- wound-induced dedifferentiation 1 (WIND1)e0
- Outcome
- expressione0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“due to higher expression of wound-induced dedifferentiation 1 (WIND1), cyclin-dependent kinase (CDKB1;2), target of monopteros 6 (TMO6), and vascular-related NAC-domain 7 (VND7).”
t0“Oriental Melon Grafted onto Squash”
Claim · model-written summary
Melatonin increased melon scion stem lignin by regulating CmCAD1 expression.
- Taxon
- oriental melonCucumis meloe0
- Treatment
- exogenous MTe0
- Gene
- CmCAD1e0
- Outcome
- lignin contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous MT increased the lignin content of the oriental melon scion stem by regulating CmCAD1 expression”
Claim · model-written summary
The melatonin-linked increase in stem lignin accelerated graft healing.
- Taxon
- oriental melonCucumis meloe0
- Outcome
- graft healing processe0
- Direction
- acceleratede0
- Qualifier
- lignin contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous MT increased the lignin content of the oriental melon scion stem by regulating CmCAD1 expression, and then accelerated the graft healing process.”
Claim · model-written summary
Melatonin-treated grafted seedlings had more vigorous root growth.
- Taxon
- oriental melonCucumis melot0
- Treatment
- exogenous MTe0
- Outcome
- root growthe0
- Direction
- more vigorouse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root growth of grafted seedlings treated with the exogenous MT was more vigorous.”
t0“Oriental Melon Grafted onto Squash”
The same questions in other papers
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- no effect
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- positive
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3 papers in the same direction as this paper
- positive
- 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.