Abstract
Our search for new polar fusicoccins biosynthetically related to fusicoccin A from the culture filtrate of isolate Niigata 2-A of a peach Fusicoccum canker fungus resulted in the isolation of new fusicoccins named fusicoccins P and Q, and 3-epifusicoccins H and Q, together with 3'-deacetylfusicoccin A and 16-O-demethyl-3-epifusicoccin J. The structures of fusicoccins P and Q, and of 3-epifusicoccin Q were determined to be those of deisopentenylfusicoccin J, 12alpha-hydroxyfusicoccin H and 12alpha-hydroxy-3-epifusicoccin H, respectively, by NMR spectrometry and chemical derivation from known fusicoccins. 3-Epifusicoccin H was identified by comparing its 400 MHz NMR spectra with those of fusicoccin H. The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive. Possible biosynthetic pathways incorporating these new fusicoccins and 3-epifusicoccins from geranylgeranyl diphosphate to 3'-deacetlyfusicoccin A and 16-O-demethyl-3-epifusicoccin J are discussed.
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Claims 5
Claim · model-written summary
Fusicoccin P was highly active in stimulating lettuce seed germination with ABA.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- fusicoccin Pe0
- Outcome
- lettuce seed germination-stimulating activitye0
- Direction
- highly activee0
- Qualifier
- presence of ABAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive.”
Claim · model-written summary
3-Epifusicoccin H was slightly active in stimulating lettuce seed germination with ABA.
- Taxon
- lettuceLactuca sativae0
- Treatment
- 3-epifusicoccins He0
- Outcome
- lettuce seed germination-stimulating activitye0
- Direction
- slightly activee0
- Qualifier
- presence of ABAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive.”
Claim · model-written summary
3-Epifusicoccin Q was slightly active in stimulating lettuce seed germination with ABA.
- Taxon
- lettuceLactuca sativae0
- Treatment
- 3-epifusicoccins H and Qe0
- Outcome
- lettuce seed germination-stimulating activitye0
- Direction
- slightly activee0
- Qualifier
- presence of ABAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive.”
Claim · model-written summary
Fusicoccin H was almost inactive in stimulating lettuce seed germination with ABA.
- Taxon
- lettuceLactuca sativae0
- Treatment
- fusicoccins He0
- Outcome
- lettuce seed germination-stimulating activitye0
- Direction
- almost inactivee0
- Qualifier
- presence of ABAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive.”
Claim · model-written summary
Fusicoccin Q was almost inactive in stimulating lettuce seed germination with ABA.
- Taxon
- lettuceLactuca sativae0
- Treatment
- fusicoccins H and Qe0
- Outcome
- lettuce seed germination-stimulating activitye0
- Direction
- almost inactivee0
- Qualifier
- presence of ABAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lettuce seed germination-stimulating activity of these new fusicoccins was examined in the presence of ABA: fusicoccin P was highly active, while 3-epifusicoccins H and Q were slightly active, and fusicoccins H and Q were almost inactive.”
The same questions in other papers
fusicoccin · growth · Lactuca sativa (garden lettuce)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.