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.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Nojiri H,Sugimori M,Yamane H,Nishimura Y,Yamada A,Shibuya N,Kodama O,Murofushi N,Omori Tdoi
10.1104/pp.110.2.387subject
Has Abstractpub_date
1996-02-01 00:00:00pages
387-392issue
2eissn
0032-0889issn
1532-2548pii
110/2/387journal_volume
110pub_type
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