Abstract
It has been suggested that jasmonic acid (JA) could be an integral part of a general signal transduction system regulating inducible defense genes in plants. It was reported that treatment with an elicitor (N-acetylchitoheptaose) induced production of phytoalexin in suspension-cultured rice (Oryza sativa L.) cells. In this study, the role of JA in the induction of phytoalexin production by N-acetylchitoheptaose was investigated. Exogenously applied ([plus or minus])-JA (10-4 M) clearly induced the production of momilactone A, a major phytoalexin, in suspension-cultured rice cells. On the other hand, in rice cells treated with N-acetylchitoheptaose, endogenous JA was rapidly and transiently accumulated prior to accumulation of momilactone A. Treatment with ibuprofen, an inhibitor of JA biosynthesis, reduced production of momilactone A in the cells treated with N-acetylchitoheptaose, but the addition of ([plus or minus])-JA increased production of momilactone A to levels higher than those in the elicited rice cells. These results strongly suggest that JA functions as a signal transducer in the induction of biosynthesis of momilactone A by N-acetylchitoheptaose in suspension-cultured rice cells.
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Claims 5
Claim · model-written summary
Exogenously applied JA induced momilactone A production in suspension-cultured rice cells.
- Taxon
- rice
Oryza sativae1 - Organ / stage
- suspension-cultured rice cellse1
- Treatment
- Exogenously applied ([plus or minus])-JA (10-4 M)e1
- Outcome
- production of momilactone Ae1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Exogenously applied ([plus or minus])-JA (10-4 M) clearly induced the production of momilactone A, a major phytoalexin, in suspension-cultured rice cells”
Claim · model-written summary
In N-acetylchitoheptaose-treated rice cells, endogenous JA accumulated rapidly and transiently before momilactone A accumulated.
- Taxon
- riceOryza sativae2
- Treatment
- N-acetylchitoheptaosee2
- Outcome
- endogenous JAe2
- Direction
- rapidly and transiently accumulatede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“in rice cells treated with N-acetylchitoheptaose, endogenous JA was rapidly and transiently accumulated prior to accumulation of momilactone A”
Claim · model-written summary
Ibuprofen, an inhibitor of JA biosynthesis, reduced momilactone A production in N-acetylchitoheptaose-treated rice cells.
- Taxon
- riceOryza sativae1
- Treatment
- ibuprofen, an inhibitor of JA biosynthesise3
- Outcome
- production of momilactone Ae3
- Direction
- reducede3
- Comparator
- cells treated with N-acetylchitoheptaosee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Exogenously applied ([plus or minus])-JA (10-4 M) clearly induced the production of momilactone A, a major phytoalexin, in suspension-cultured rice cells”
e3“Treatment with ibuprofen, an inhibitor of JA biosynthesis, reduced production of momilactone A in the cells treated with N-acetylchitoheptaose”
Claim · model-written summary
Adding JA increased momilactone A production above the level in elicited rice cells.
- Taxon
- riceOryza sativae4
- Treatment
- the addition of ([plus or minus])-JAe4
- Outcome
- production of momilactone Ae4
- Direction
- increasede4
- Comparator
- those in the elicited rice cellse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the addition of ([plus or minus])-JA increased production of momilactone A to levels higher than those in the elicited rice cells”
Claim · model-written summary
The authors suggest JA acts as a signal transducer in the induction of momilactone A biosynthesis by N-acetylchitoheptaose.
- Taxon
- riceOryza sativae1
- Treatment
- N-acetylchitoheptaosee5
- Compound
- JAe5
- Outcome
- induction of biosynthesis of momilactone Ae5
- Qualifier
- signal transducere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Exogenously applied ([plus or minus])-JA (10-4 M) clearly induced the production of momilactone A, a major phytoalexin, in suspension-cultured rice cells”
e5“These results strongly suggest that JA functions as a signal transducer in the induction of biosynthesis of momilactone A by N-acetylchitoheptaose”
The same questions in other papers
jasmonic acid · yield · Oryza sativa (rice)Positive and negative results
10 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.