Abstract
Abstract Low temperature is a major environmental factor that limits the growth, yield, and geographical distribution of Cavendish and Dajiao bananas ( Musa spp.). Dajiao bananas exhibit a significantly higher cold tolerance than the Cavendish cultivar. However, the underlying mechanisms involved in cold tolerance regulation in Dajiao plants have not been determined. In this study, we investigated the mechanisms underlying the differences in cold tolerance at the cellular level between the cold-sensitive Cavendish and cold-tolerant Dajiao banana types through comparative metabolomics and transcriptomics analyses in calli exposed to cold treatment under dark conditions. A higher accumulation of lipids was observed in Dajiao calli cells compared to Cavendish cells under cold stress. After cold treatment, 4,626 and 5,516 differentially expressed genes (DEGs) were identified in Cavendish and Dajiao banana cells, respectively. By integrating the transcriptomic and metabolomic datasets, we discovered that the linoleic acid and α-linoleic acid metabolism and the Abscisic acid (ABA)-independent Mitogen-activated protein kinase (MAPK) cascade-Inducer of CBF expression 1 (ICE1) signal transduction pathway (including Mitogen-activated protein kinase kinase kinase 1 [ MEKK1 ], MAPK5 , ICE1 , and Cold-regulated 47 [ COR47 ]) played crucial roles in the cold tolerance of Dajiao bananas. Our study provides new insights into cold response regulation and novel cold tolerance mechanisms, providing valuable leads and targets for the genetic improvement of cold tolerance in bananas.
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Claims 5
Claim · model-written summary
Dajiao banana calli accumulated more lipids than Cavendish calli under cold stress.
- Material
- Dajiaoe1
- Organ / stage
- calli cellse1
- Treatment
- cold stresse1
- Outcome
- accumulation of lipidse1
- Direction
- highere1
- Comparator
- Cavendish cellse1
MusaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cavendish and Dajiao bananas ( Musa spp. )”
e1“A higher accumulation of lipids was observed in Dajiao calli cells compared to Cavendish cells under cold stress”
Claim · model-written summary
Under cold treatment, 4,626 differentially expressed genes were identified in Cavendish banana cells.
Verbatim
e6“After cold treatment, 4,626 and 5,516 differentially expressed genes (DEGs) were identified in Cavendish and Dajiao banana cells, respectively”
Claim · model-written summary
Under cold treatment, 5,516 differentially expressed genes were identified in Dajiao banana cells.
Verbatim
e6“After cold treatment, 4,626 and 5,516 differentially expressed genes (DEGs) were identified in Cavendish and Dajiao banana cells, respectively”
Claim · model-written summary
Linoleic acid and alpha-linoleic acid metabolism played a crucial role in the cold tolerance of Dajiao bananas.
Verbatim
e7“we discovered that the linoleic acid and α-linoleic acid metabolism and the Abscisic acid (ABA)-independent Mitogen-activated protein kinase (MAPK) cascade-Inducer of CBF expression 1 (ICE1) signal transduction pathway (including Mitogen-activated protein kinase kinase kinase 1 [ MEKK1 ], MAPK5 , ICE1 , and Cold-regulated 47 [ COR47 ]) played crucial roles in the cold tolerance of Dajiao bananas”
Claim · model-written summary
An ABA-independent MAPK cascade-ICE1 signal pathway played a crucial role in the cold tolerance of Dajiao bananas.
Verbatim
e7“we discovered that the linoleic acid and α-linoleic acid metabolism and the Abscisic acid (ABA)-independent Mitogen-activated protein kinase (MAPK) cascade-Inducer of CBF expression 1 (ICE1) signal transduction pathway (including Mitogen-activated protein kinase kinase kinase 1 [ MEKK1 ], MAPK5 , ICE1 , and Cold-regulated 47 [ COR47 ]) played crucial roles in the cold tolerance of Dajiao bananas”
The same questions in other papers
cold · molecular: metabolites · MusaPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 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.