Abstract
Wounding of potato (Solanum tuberosum L.) tubers results in suberization, apparently triggered by the release of some chemical factor(s) at the cut surface. Suberization, as measured by diffusion resistance of the tissue surface to water vapor, was inhibited by mm concentrations of indoleacetic acid, unaffected by mm concentrations of traumatic acid, severely inhibited at mum concentrations of cytokinin, but stimulated by abscisic acid (ABA) at 10(-4)m. Thorough washing of potato disks up to 3 to 4 days after cutting resulted in severe inhibition of suberization as measured both by diffusion resistance and by the amount of the octadecene diol generated by hydrogenolysis (LiAlH(4)) of the tissue. Disks washed after 4 days did not show any inhibition of suberization. High performance liquid chromatographic analysis of the wash from fresh potato disks showed that about 14 ng of ABA was released into the wash per g of tissue. The amount of ABA released increased with time up to 4 to 6 hours of washing. The maximal amount of ABA was washed out after aging for 24 hours and after 2 days of aging ABA could no longer be found in the surface wash of the disks. Addition of ABA to the media of potato tissue cultures resulted in suberin formation whereas control cultures contained little suberin. The effect of ABA on suberization in the tissue cultures was shown to be linearly concentration-dependent up to 10(-4)m and a linear increase in suberin formation was seen up to about 8 days of culture growth on the media containing 10(-4)m ABA. From these results it is proposed that during the early phase of wound-healing ABA plays a role in triggering a chain of biochemical processes which eventually (in about 3 to 4 days) result in the formation of a suberization-inducing factor, responsible for the induction of the enzymes involved in suberin biosynthesis.
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Claims 15
Claim · model-written summary
Wounding potato tubers resulted in suberization.
- Taxon
- potato
Solanum tuberosume0 - Organ / stage
- tuberse0
- Outcome
- suberizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wounding of potato (Solanum tuberosum L.) tubers results in suberization”
Claim · model-written summary
Millimolar indoleacetic acid inhibited potato suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- mm concentrations of indoleacetic acide1
- Outcome
- suberizatione0
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wounding of potato (Solanum tuberosum L.) tubers results in suberization”
e1“was inhibited by mm concentrations of indoleacetic acid”
Claim · model-written summary
Millimolar traumatic acid did not affect potato suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- mm concentrations of traumatic acide1
- Outcome
- suberizatione0
- Direction
- unaffectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wounding of potato (Solanum tuberosum L.) tubers results in suberization”
e1“unaffected by mm concentrations of traumatic acid”
Claim · model-written summary
Micromolar cytokinin severely inhibited potato suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- mum concentrations of cytokinine1
- Outcome
- suberizatione0
- Direction
- severely inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wounding of potato (Solanum tuberosum L.) tubers results in suberization”
e1“severely inhibited at mum concentrations of cytokinin”
Claim · model-written summary
ABA at 10(-4)m stimulated potato suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- abscisic acid (ABA) at 10(-4)me1
- Outcome
- suberizatione0
- Direction
- stimulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wounding of potato (Solanum tuberosum L.) tubers results in suberization”
e1“stimulated by abscisic acid (ABA) at 10(-4)m”
Claim · model-written summary
Washing disks for up to four days after cutting severely inhibited suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Thorough washinge1
- Outcome
- suberizatione1
- Direction
- severe inhibitione1
- Qualifier
- up to 3 to 4 days after cuttinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“Thorough washing of potato disks up to 3 to 4 days after cutting resulted in severe inhibition of suberization”
Claim · model-written summary
Washing after four days did not inhibit potato suberization.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- washed after 4 dayse1
- Outcome
- suberizatione1
- Direction
- did not show any inhibitione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“Disks washed after 4 days did not show any inhibition of suberization”
Claim · model-written summary
Fresh potato disks released about 14 ng ABA per gram of tissue into wash.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- ABA was released into the washe0
- Value
- about 14 ng of ABA was released into the wash per g of tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“about 14 ng of ABA was released into the wash per g of tissue”
e1“fresh potato disks”
Claim · model-written summary
ABA release rose during four to six hours of washing.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- washinge1
- Outcome
- amount of ABA releasede1
- Direction
- increasede1
- Qualifier
- up to 4 to 6 hourse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“The amount of ABA released increased with time up to 4 to 6 hours of washing”
Claim · model-written summary
ABA washout was maximal after 24 hours of aging.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- maximal amount of ABA was washed oute1
- Direction
- maximale1
- Qualifier
- after aging for 24 hourse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“The maximal amount of ABA was washed out after aging for 24 hours”
Claim · model-written summary
ABA was absent from the surface wash after two days of aging.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- ABA could no longer be found in the surface washe1
- Qualifier
- after 2 days of aginge1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“after 2 days of aging ABA could no longer be found in the surface wash of the disks”
Claim · model-written summary
ABA added to potato tissue culture media induced suberin formation relative to control cultures.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Addition of ABA to the mediae0
- Outcome
- suberin formatione0
- Direction
- resulted ine0
- Comparator
- control culturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of ABA to the media of potato tissue cultures resulted in suberin formation whereas control cultures contained little suberin”
Claim · model-written summary
Suberization in potato tissue culture rose linearly with ABA concentration up to 10(-4)m.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- ABAe1
- Outcome
- suberizatione1
- Direction
- linearly concentration-dependente1
- Qualifier
- up to 10(-4)me1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato tissue cultures”
e1“The effect of ABA on suberization in the tissue cultures was shown to be linearly concentration-dependent up to 10(-4)m”
Claim · model-written summary
Potato suberin formation increased linearly through about eight days on 10(-4)m ABA medium.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 10(-4)m ABAe1
- Outcome
- suberin formatione1
- Direction
- linear increasee1
- Qualifier
- up to about 8 days of culture growthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato tissue cultures”
e1“a linear increase in suberin formation was seen up to about 8 days of culture growth on the media containing 10(-4)m ABA”
Claim · model-written summary
The authors propose ABA initiates processes that produce a suberization-inducing factor after about three to four days.
- Taxon
- potatoSolanum tuberosume0
- Compound
- ABAe1
- Outcome
- formation of a suberization-inducing factore1
- Qualifier
- in about 3 to 4 dayse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh potato disks”
e1“during the early phase of wound-healing ABA plays a role in triggering a chain of biochemical processes which eventually (in about 3 to 4 days) result in the formation of a suberization-inducing factor”
The same questions in other papers
(+)-abscisic acid · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- positive
in vitro · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- 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.