2006 Fiscal Year Final Research Report Summary
Fundamental and applied studies on responses to mechanical wounds and pathogen infection on stems and healing mechanisms of stem wounds in woody plants.
| Project/Area Number |
16380103
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
林学・森林工学
|
|---|
| Research Institution | Tottori University |
|---|
Principal Investigator |
YAMAMOTO Fukuju Tottori Univ., Fac.of Agr., Professor, 農学部, 教授 (60112322)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ITO Shinichiro Mie Univ., Fac.of Bioresorces, Professor, 生物資源学部, 教授 (90092139)
SANO Junji Tottori Univ., Fac.of Agr., Professor, 農学部, 教授 (60283975)
OKA Mariko Tottori Univ., Fac.of Agr., Lecturer, 農学部, 講師 (20324999)
|
|---|
| Project Period (FY) |
2004 – 2006
|
| Keywords | salicylic acid / ethylene / jasmonic acid / rohshi pitch canker / Chamaecyparis obtusa / Thujopsis dolabrata |
|---|
| Research Abstract |
Resin production in woody species.
The application of methyl jasmonate to stem wounds stimulated resin production in angiosperm woody species including Araliaceae, Rosaseae and Anacardiaceae species and in gymnosperms including Cupressaceae (Chamaecyparis obtusa and Thujopsis dolabrata) and Taxodiaceae (Cryptomeria japonica) species.
Roles of salicylic acid, jasmonic acid and ethylene in resin duct formation in the bark of Cupressaceae species in relation to rohshi pitch canker.
The mechanisms of resin duct formation and resin production in relation to the rohshi pitch canker of Cupressaceae species were studied. The rohshi pitch canker on main stems of Chamaecyparis obtusa and Thujopsis dolabrata species, resulting in continuous and copious resin exudation and occasionally in canopy death, is suggested to be caused by a fungus named Cistella japonica.
The differentiation of resin ducts and resin production in Chamaecyparis obtusa and Thujopsis dolabrata were significantly promoted by the application of salicylic acid-Na in combination with methyl jasmonate and ethrel, an ethylene releasing compound. The effect of such combination was greater than that of methyl jasmonate alone, ethrel alone or other combinations.
|
