Abstract
In response to wounding, a 48-kDa myelin basic protein (MBP) kinase is activated within 2 min, both locally and systemically, in leaves of young tomato plants. The activating signal is able to pass through a steam girdle on the stem, indicating that it moves through the xylem and does not require intact phloem tissue. A 48-kDa MBP kinase is also activated by the 18-amino acid polypeptide systemin, a potent wound signal for the synthesis of systemic wound response proteins (swrps). The kinase activation by systemin is strongly inhibited by a systemin analog having a Thr-17 --> Ala-17 substitution, which is a powerful antagonist of systemin activation of swrp genes. A 48-kDa MBP kinase activity also increases in response to polygalacturonic acid and chitosan but not in response to jasmonic acid or phytodienoic acid. In def1, a mutant tomato line having a defective octadecanoid pathway, the 48-kDa MBP kinase is activated by wounding and systemin as in the wild-type plants. This indicates that MBP kinase functions between the perception of primary signals and the DEF1 gene product. In response to wounding, the MBP kinase is phosphorylated on phosphotyrosine residues, indicating a relationship to the mitogen-activated protein kinase family of protein kinases.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Wounding activated the 48-kDa MBP kinase within two minutes locally and systemically.
- Taxon
- tomato plants
Solanum lycopersicume0 - Organ / stage
- leavese0
- Treatment
- woundinge0
- Gene
- 48-kDa myelin basic protein (MBP) kinasee0
- Outcome
- kinase is activatede0
- Direction
- activatede0
- Value
- within 2 mine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In response to wounding, a 48-kDa myelin basic protein (MBP) kinase is activated within 2 min, both locally and systemically, in leaves of young tomato plants.”
Claim · model-written summary
The activating signal traversed a stem girdle.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- steme0
- Outcome
- activating signal is able to pass through a steam girdlee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activating signal is able to pass through a steam girdle on the stem, indicating that it moves through the xylem and does not require intact phloem tissue.”
e1“tomato plants”
Claim · model-written summary
Systemin activated 48-kDa MBP kinase.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- 18-amino acid polypeptide systemine0
- Gene
- 48-kDa MBP kinasee0
- Outcome
- MBP kinasee0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 48-kDa MBP kinase is also activated by the 18-amino acid polypeptide systemin”
e1“tomato plants”
Claim · model-written summary
A systemin analog with Thr-17 to Ala-17 substitution strongly inhibited systemin activation of kinase.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- systemin analog having a Thr-17 --> Ala-17 substitutione0
- Outcome
- kinase activation by systemine0
- Direction
- strongly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The kinase activation by systemin is strongly inhibited by a systemin analog having a Thr-17 --> Ala-17 substitution”
e1“tomato plants”
Claim · model-written summary
Polygalacturonic acid increased MBP kinase activity.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- polygalacturonic acide0
- Gene
- 48-kDa MBP kinasee0
- Outcome
- MBP kinase activitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 48-kDa MBP kinase activity also increases in response to polygalacturonic acid and chitosan”
e1“tomato plants”
Claim · model-written summary
Chitosan increased MBP kinase activity.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- chitosane0
- Gene
- 48-kDa MBP kinasee0
- Outcome
- MBP kinase activitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 48-kDa MBP kinase activity also increases in response to polygalacturonic acid and chitosan”
e1“tomato plants”
Claim · model-written summary
Jasmonic acid did not increase MBP kinase activity.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- jasmonic acide0
- Outcome
- MBP kinase activitye0
- Direction
- not in responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 48-kDa MBP kinase activity also increases in response to polygalacturonic acid and chitosan but not in response to jasmonic acid or phytodienoic acid.”
e1“tomato plants”
Claim · model-written summary
Phytodienoic acid did not increase MBP kinase activity.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- phytodienoic acide0
- Outcome
- MBP kinase activitye0
- Direction
- not in responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 48-kDa MBP kinase activity also increases in response to polygalacturonic acid and chitosan but not in response to jasmonic acid or phytodienoic acid.”
e1“tomato plants”
Claim · model-written summary
Wounding activated MBP kinase in the def1 mutant as in wild type.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- def1e0
- Treatment
- woundinge0
- Gene
- 48-kDa MBP kinasee0
- Outcome
- MBP kinasee0
- Direction
- activatede0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In def1, a mutant tomato line having a defective octadecanoid pathway, the 48-kDa MBP kinase is activated by wounding and systemin as in the wild-type plants.”
Claim · model-written summary
Systemin activated MBP kinase in the def1 mutant as in wild type.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- def1e0
- Treatment
- systemine0
- Gene
- 48-kDa MBP kinasee0
- Outcome
- MBP kinasee0
- Direction
- activatede0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In def1, a mutant tomato line having a defective octadecanoid pathway, the 48-kDa MBP kinase is activated by wounding and systemin as in the wild-type plants.”
Claim · model-written summary
The authors place MBP kinase between primary signal perception and the DEF1 gene product.
- Taxon
- tomato plantsSolanum lycopersicume1
- Gene
- DEF1e0
- Outcome
- MBP kinase functions between the perception of primary signals and the DEF1 gene producte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MBP kinase functions between the perception of primary signals and the DEF1 gene product.”
e1“tomato plants”
Claim · model-written summary
Wounding phosphorylated MBP kinase on phosphotyrosine residues.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- woundinge0
- Gene
- MBP kinasee0
- Outcome
- phosphorylated on phosphotyrosine residuese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In response to wounding, the MBP kinase is phosphorylated on phosphotyrosine residues”
e1“tomato plants”
The same questions in other papers
chitosan · quality: protein · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
mechanical · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
6 papers more in this group
See all 10 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.