Abstract
Disks from different tissues were obtained from "Redchief Delicious" apple fruit (Malus domestica Borkh.) and analyzed for the ability to metabolize 1-pentanol as well as synthesize constitutive esters and alcohols under anoxic and aerobic conditions. The skin tissue displayed a greater capacity to synthesize pentanal, pentyl acetate, pentyl propionate, pentyl butyrate, and pentyl hexanoate than the hypanthial and carpellary tissues during incubation with 1-pentanol. With the exception of pentyl acetate and pentyl propionate biosynthesis, the hypanthial tissue synthesized these compounds at a higher rate than the carpellary tissue. Anoxia inhibited both constituent and 1-pentanol-derived ester biosynthesis. While anoxia inhibited ester biosynthesis, ethanol biosynthesis increased at a greater rate in tissue disks held under these conditions. Biosynthesis of 1-butanol, 2-methyl-1-butanol, and 1-hexanol was greater in tissue disks held in air during the first part of the measurement period and dropped off more rapidly than those transpiring in tissue disks held under anoxic conditions. The biosynthetic rates of all esters, both constituent and 1-pentanol-derived, increased as a result of air exposure. While hypoxic or anoxic conditions may promote ethanol synthesis, these conditions also appear to inhibit the formation of the ethanol-derived esters partially responsible for the off-flavor in apples attributed to ultralow O(2) controlled atmosphere storage.
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Claims 7
Claim · model-written summary
Apple skin synthesized five volatiles more than hypanthial and carpellary tissues with 1-pentanol.
- Taxon
- apple
Malus domesticat0 - Organ / stage
- skin tissuee0
- Treatment
- 1-pentanole0
- Outcome
- pentanal, pentyl acetate, pentyl propionate, pentyl butyrate, and pentyl hexanoatee0
- Direction
- greatere0
- Comparator
- hypanthial and carpellary tissuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The skin tissue displayed a greater capacity to synthesize pentanal, pentyl acetate, pentyl propionate, pentyl butyrate, and pentyl hexanoate than the hypanthial and carpellary tissues during incubation with 1-pentanol.”
t0“Apple”
Claim · model-written summary
Hypanthial tissue synthesized these volatiles faster than carpellary tissue, except two pentyl esters.
- Taxon
- appleMalus domesticat0
- Organ / stage
- hypanthial tissuee0
- Outcome
- these compoundse0
- Direction
- highere0
- Qualifier
- exception of pentyl acetate and pentyl propionate biosynthesise0
- Comparator
- carpellary tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the exception of pentyl acetate and pentyl propionate biosynthesis, the hypanthial tissue synthesized these compounds at a higher rate than the carpellary tissue.”
t0“Apple”
Claim · model-written summary
Anoxia inhibited constitutive ester biosynthesis.
- Taxon
- appleMalus domesticat0
- Treatment
- Anoxiae0
- Outcome
- constituente0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anoxia inhibited both constituent and 1-pentanol-derived ester biosynthesis.”
t0“Apple”
Claim · model-written summary
Anoxia inhibited 1-pentanol-derived ester biosynthesis.
- Taxon
- appleMalus domesticat0
- Treatment
- Anoxiae0
- Outcome
- 1-pentanol-derived ester biosynthesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anoxia inhibited both constituent and 1-pentanol-derived ester biosynthesis.”
t0“Apple”
Claim · model-written summary
Under anoxia, ethanol biosynthesis increased at a greater rate.
- Taxon
- appleMalus domesticat0
- Treatment
- anoxiae0
- Outcome
- ethanol biosynthesise0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While anoxia inhibited ester biosynthesis, ethanol biosynthesis increased at a greater rate in tissue disks held under these conditions.”
t0“Apple”
Claim · model-written summary
Early biosynthesis of three alcohols was greater in air and declined more rapidly.
- Taxon
- appleMalus domesticat0
- Treatment
- aire0
- Outcome
- Biosynthesis of 1-butanol, 2-methyl-1-butanol, and 1-hexanole0
- Direction
- greatere0
- Comparator
- anoxic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biosynthesis of 1-butanol, 2-methyl-1-butanol, and 1-hexanol was greater in tissue disks held in air during the first part of the measurement period and dropped off more rapidly than those transpiring in tissue disks held under anoxic conditions.”
t0“Apple”
Claim · model-written summary
Air exposure increased biosynthetic rates of all esters.
- Taxon
- appleMalus domesticat0
- Treatment
- air exposuree0
- Outcome
- biosynthetic rates of all esterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biosynthetic rates of all esters, both constituent and 1-pentanol-derived, increased as a result of air exposure.”
t0“Apple”
The same questions in other papers
flooding · molecular: metabolites · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.