Abstract
The expression of the potato and tomato proteinase inhibitor II (pin2) gene family is subject to both developmental and environmental control, being constitutively expressed in potato tubers while only being present in the foliage of the potato or tomato plants after mechanical damage. There is evidence that the phytohormone abscisic acid (ABA) is involved in this wound induction of pin2 gene expression. This paper describes experiments that demonstrate that ABA is able to induce the expression of the pin2 gene family, both locally and systemically, at physiological concentrations. The significance of the ABA involvement in the pin2 induction upon wounding has been further strengthened by analyzing the expression of a pin2 promoter-[beta]-glucuronidase gene fusion in transgenic ABA-deficient mutant potato plants. We have analyzed the developmental regulation of pin2 gene expression in wild-type and ABA-deficient potato and tomato plants. The pin2 mRNA level is identical in mutant and wild-type parental Solanum phureja tubers. In addition, evidence is presented for pin2 also being constitutively expressed at certain stages in the development of both tomato and potato flowers. Again, the ABA deficiency appears to have little influence in this tissue-specific expression in the mutants. These results suggest the action of separate pathways for the developmental and environmental regulation of pin2 gene expression.
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Claims 5
Claim · model-written summary
ABA induced pin2 gene family expression locally and systemically at physiological concentrations.
- Taxon
- potato and tomato
Solanum lycopersicum
Solanum tuberosume1 - Treatment
- ABAe0
- Gene
- pin2 gene familye0
- Outcome
- expression of the pin2 gene familye0
- Direction
- inducee0
- Qualifier
- both locally and systemically, at physiological concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA is able to induce the expression of the pin2 gene family, both locally and systemically, at physiological concentrations.”
e1“potato and tomato proteinase inhibitor II (pin2) gene family”
Claim · model-written summary
Pin2 mRNA level was identical in ABA-deficient mutant and wild-type Solanum phureja tubers.
- Taxon
- Solanum phureja
Solanum phurejae0 - Material
- mutant and wild-type parental Solanum phurejae0
- Organ / stage
- tuberse0
- Outcome
- pin2 mRNA levele0
- Direction
- identicale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pin2 mRNA level is identical in mutant and wild-type parental Solanum phureja tubers.”
Claim · model-written summary
Pin2 was constitutively expressed at certain stages of tomato and potato flower development.
- Taxon
- tomato and potatoSolanum lycopersicumSolanum tuberosume0
- Organ / stage
- flowerse0
- Outcome
- pin2 also being constitutively expressede0
- Qualifier
- at certain stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pin2 also being constitutively expressed at certain stages in the development of both tomato and potato flowers.”
Claim · model-written summary
ABA deficiency had little influence on flower tissue specific pin2 expression.
- Taxon
- tomato and potatoSolanum lycopersicumSolanum tuberosume1
- Treatment
- ABA deficiencye0
- Outcome
- tissue-specific expressione0
- Direction
- little influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ABA deficiency appears to have little influence in this tissue-specific expression in the mutants.”
e1“both tomato and potato flowers”
Claim · model-written summary
The authors inferred separate pathways for developmental and environmental pin2 regulation.
- Taxon
- potato and tomatoSolanum lycopersicumSolanum tuberosume1
- Outcome
- regulation of pin2 gene expressione0
- Qualifier
- separate pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results suggest the action of separate pathways for the developmental and environmental regulation of pin2 gene expression.”
e1“potato and tomato proteinase inhibitor II (pin2) gene family”
The same questions in other papers
(+)-abscisic acid · molecular: expression · Solanum tuberosum (potato)Positive and negative results
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- positive
- no effect
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See all 9 papers →(+)-abscisic acid · molecular: expression · Solanum lycopersicum (tomato)Positive and negative results
15 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
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See all 20 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.