Abstract
L.) are restricted by salt stress. Melatonin is known to improve the resistance of plants to stress. The study analyzed the effects of 100 μM melatonin on physiological and transcriptome changes in banana varieties (AAA group cv. Cavendish) under 60 mmol/l of NaCl salt stress situation. The phenotypic results showed that the application of exogenous melatonin could maintain banana plants' health growth and alleviate the damage caused by salt stress. The physiological data show that the application of exogenous melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll, reducing membrane permeability and recovery of relative water content, increasing the accumulation of MDA, and enhancing antioxidant defense activity. Transcriptome sequencing showed that melatonin-induced salt tolerance of banana seedlings involved biological processes, molecular functions, and cellular components. We also found that differentially expressed genes (DEGs) are involved in a variety of metabolic pathways, including amino sugar and nucleotide sugar metabolism, phenylalanine metabolism, cyanoamino acid metabolism, starch and sucrose metabolism, and linoleic acid metabolism. These major metabolism and biosynthesis may be involved in the potential mechanism of melatonin under salt stress. Furthermore, some members of the transcription factor family, such as MYB, NAC, bHLH, and WRKY, might contribute to melatonin alleviating salt stress tolerance of the banana plant. The result laid a basis for further clarifying the salt stress resistance mechanism of bananas mediated by exogenous melatonin and provides theoretical bases to utilize melatonin to improve banana salt tolerance in the future.
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Claims 9
Claim · model-written summary
Exogenous melatonin maintained banana growth and alleviated salt damage.
- Taxon
- bananae0
- Treatment
- application of exogenous melatonine0
- Outcome
- banana plants' health growth and alleviate the damage caused by salt stresse0
- Direction
- maintaine0
Not reportedComparator
Verbatim
e0“The phenotypic results showed that the application of exogenous melatonin could maintain banana plants' health growth and alleviate the damage caused by salt stress”
Claim · model-written summary
Melatonin increased proline and soluble protein content in salt-stressed banana seedlings.
- Taxon
- bananae0
- Treatment
- application of exogenous melatonine0
- Outcome
- proline content and soluble proteine0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“application of exogenous melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein”
Claim · model-written summary
Melatonin slowed chlorophyll degradation in banana seedlings.
Not reportedComparator
Verbatim
e0“banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll”
e1“application of exogenous melatonin can enhance salt tolerance of banana seedlings”
Claim · model-written summary
Melatonin reduced membrane permeability in banana seedlings.
- Taxon
- bananae0
- Treatment
- application of exogenous melatonine0
- Outcome
- membrane permeabilitye0
- Direction
- reducinge0
Not reportedComparator
Verbatim
e0“application of exogenous melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll, reducing membrane permeability”
Claim · model-written summary
Melatonin was associated with recovery of relative water content in banana seedlings.
- Taxon
- bananae0
- Treatment
- application of exogenous melatonine0
- Outcome
- relative water contente0
- Direction
- recoverye0
Not reportedComparator
Verbatim
e0“application of exogenous melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll, reducing membrane permeability and recovery of relative water content”
Claim · model-written summary
Melatonin increased MDA accumulation in banana seedlings.
- Taxon
- bananae0
- Treatment
- application of exogenous melatonine0
- Outcome
- accumulation of MDAe0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“application of exogenous melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll, reducing membrane permeability and recovery of relative water content, increasing the accumulation of MDA”
Claim · model-written summary
Melatonin enhanced antioxidant defense activity in banana seedlings.
Not reportedComparator
Verbatim
e0“melatonin can enhance salt tolerance of banana seedlings by increasing the content of proline content and soluble protein, slowing down the degradation of chlorophyll, reducing membrane permeability and recovery of relative water content, increasing the accumulation of MDA, and enhancing antioxidant defense activity”
Claim · model-written summary
Differentially expressed genes in melatonin-treated salt-stressed banana seedlings involved several carbohydrate and amino acid metabolic pathways.
Verbatim
e0“differentially expressed genes (DEGs) are involved in a variety of metabolic pathways, including amino sugar and nucleotide sugar metabolism, phenylalanine metabolism, cyanoamino acid metabolism, starch and sucrose metabolism, and linoleic acid metabolism”
t0“banana seedlings”
Claim · model-written summary
The authors proposed that MYB, NAC, bHLH and WRKY transcription factors might contribute to melatonin-mediated banana salt tolerance.
Verbatim
e0“MYB, NAC, bHLH, and WRKY, might contribute to melatonin alleviating salt stress tolerance of the banana plant”
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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.