Abstract
The feedback regulation of ethylene biosynthesis in banana [Musa sp. (AAA group, Cavendish subgroup) cv. Grand Nain] fruit was investigated in an attempt to clarify the opposite effect of 1-methylcyclopropene (1-MCP), an ethylene action inhibitor, before and after the onset of ripening. 1-MCP pre-treatment completely prevented the ripening-induced effect of propylene in pre-climacteric banana fruit, whereas treatment after the onset of ripening stimulated ethylene production. In pre-climacteric fruit, higher concentrations of propylene suppressed ethylene production more strongly, despite their earlier ethylene-inducing effect. Exposure of the fruit ripened by propylene to 1-MCP increased ethylene production concomitantly with an increase in 1-aminocyclopropane-1-carboxylate (ACC) synthase activity and ACC content, and prevented a transient decrease in MA-ACS1 transcripts in the pulp tissues. In contrast, in the peel of ripening fruit, 1-MCP prevented the increase in ethylene production and subsequently the ripening process by reduction of the increase in MA-ACS1 and MA-ACO1 transcripts and of ACC synthase and ACC oxidase activities. These results suggest that ethylene biosynthesis in ripening banana fruit may be controlled negatively in the pulp tissue and positively in the peel tissue. This differential regulation by ethylene in pulp and peel tissues was also observed for MA-PL, MA-Exp, and MA-MADS genes.
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Claims 11
Claim · model-written summary
1-MCP pre-treatment completely prevented the ripening-induced effect of propylene in pre-climacteric banana fruit.
- Taxon
- bananat0
- Organ / stage
- pre-climacterice1
- Treatment
- 1-MCP pre-treatmente1
- Outcome
- ripening-induced effect of propylenee1
- Direction
- preventede1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“1-MCP pre-treatment completely prevented the ripening-induced effect of propylene in pre-climacteric banana fruit”
Claim · model-written summary
1-MCP treatment after the onset of ripening stimulated ethylene production in banana fruit.
- Taxon
- bananat0
- Treatment
- treatment after the onset of ripeninge1
- Outcome
- ethylene productione1
- Direction
- stimulatede1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“1-MCP pre-treatment completely prevented the ripening-induced effect of propylene in pre-climacteric banana fruit, whereas treatment after the onset of ripening stimulated ethylene production”
Claim · model-written summary
In pre-climacteric banana fruit, higher concentrations of propylene suppressed ethylene production more strongly.
- Taxon
- bananat0
- Organ / stage
- pre-climacterice1
- Treatment
- higher concentrations of propylenee1
- Outcome
- ethylene productione1
- Direction
- suppressede1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“In pre-climacteric fruit, higher concentrations of propylene suppressed ethylene production more strongly”
Claim · model-written summary
In propylene-ripened banana fruit, exposure to 1-MCP increased ethylene production in the pulp tissues.
- Taxon
- bananat0
- Organ / stage
- pulp tissuese1
- Treatment
- Exposure of the fruit ripened by propylene to 1-MCPe1
- Outcome
- ethylene productione1
- Direction
- increasede1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“Exposure of the fruit ripened by propylene to 1-MCP increased ethylene production concomitantly with an increase in 1-aminocyclopropane-1-carboxylate (ACC) synthase activity and ACC content, and prevented a transient decrease in MA-ACS1 transcripts in the pulp tissues”
Claim · model-written summary
In propylene-ripened banana fruit, exposure to 1-MCP increased ACC synthase activity and ACC content in the pulp tissues.
- Taxon
- bananat0
- Organ / stage
- pulp tissuese1
- Treatment
- Exposure of the fruit ripened by propylene to 1-MCPe1
- Outcome
- ACC) synthase activity and ACC contente1
- Direction
- increasee1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“Exposure of the fruit ripened by propylene to 1-MCP increased ethylene production concomitantly with an increase in 1-aminocyclopropane-1-carboxylate (ACC) synthase activity and ACC content, and prevented a transient decrease in MA-ACS1 transcripts in the pulp tissues”
Claim · model-written summary
In propylene-ripened banana fruit, exposure to 1-MCP prevented a transient decrease in MA-ACS1 transcripts in the pulp tissues.
- Taxon
- bananat0
- Organ / stage
- pulp tissuese1
- Treatment
- Exposure of the fruit ripened by propylene to 1-MCPe1
- Gene
- MA-ACS1e1
- Outcome
- transient decrease in MA-ACS1 transcriptse1
- Direction
- preventede1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“Exposure of the fruit ripened by propylene to 1-MCP increased ethylene production concomitantly with an increase in 1-aminocyclopropane-1-carboxylate (ACC) synthase activity and ACC content, and prevented a transient decrease in MA-ACS1 transcripts in the pulp tissues”
Claim · model-written summary
In the peel of ripening banana fruit, 1-MCP prevented the increase in ethylene production and subsequently the ripening process.
- Taxon
- bananat0
- Organ / stage
- peele1
- Treatment
- 1-MCPe1
- Outcome
- ethylene production and subsequently the ripening processe1
- Direction
- prevented the increasee1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“in the peel of ripening fruit, 1-MCP prevented the increase in ethylene production and subsequently the ripening process by reduction of the increase in MA-ACS1 and MA-ACO1 transcripts and of ACC synthase and ACC oxidase activities”
Claim · model-written summary
In the peel of ripening banana fruit, 1-MCP reduced the increase in MA-ACS1 and MA-ACO1 transcripts.
- Taxon
- bananat0
- Organ / stage
- peele1
- Treatment
- 1-MCPe1
- Gene
- MA-ACS1 and MA-ACO1e1
- Outcome
- increase in MA-ACS1 and MA-ACO1 transcriptse1
- Direction
- reductione1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“in the peel of ripening fruit, 1-MCP prevented the increase in ethylene production and subsequently the ripening process by reduction of the increase in MA-ACS1 and MA-ACO1 transcripts and of ACC synthase and ACC oxidase activities”
Claim · model-written summary
In the peel of ripening banana fruit, 1-MCP reduced the increase in ACC synthase and ACC oxidase activities.
- Taxon
- bananat0
- Organ / stage
- peele1
- Treatment
- 1-MCPe1
- Outcome
- ACC synthase and ACC oxidase activitiese1
- Direction
- reductione1
Not reportedComparator
Verbatim
t0“banana fruit”
e1“in the peel of ripening fruit, 1-MCP prevented the increase in ethylene production and subsequently the ripening process by reduction of the increase in MA-ACS1 and MA-ACO1 transcripts and of ACC synthase and ACC oxidase activities”
Claim · model-written summary
The authors suggest that ethylene biosynthesis in ripening banana fruit may be controlled negatively in the pulp tissue and positively in the peel tissue.
Verbatim
e1“ethylene biosynthesis in ripening banana fruit may be controlled negatively in the pulp tissue and positively in the peel tissue”
Claim · model-written summary
Differential regulation by ethylene in pulp and peel tissues was also observed for the MA-PL, MA-Exp and MA-MADS genes.
Verbatim
t0“banana fruit”
e1“This differential regulation by ethylene in pulp and peel tissues was also observed for MA-PL, MA-Exp, and MA-MADS genes”
The same questions in other papers
1-methylcyclopropene · physiology: hormones · MusaResults differ
11 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
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See all 14 papers →1-methylcyclopropene · quality: postharvest · MusaResults differ
35 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- negative
35 papers more in this group
See all 39 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.