Impacts by pathogenic and endophytic fungi on the shoots of mangrove trees inundated with tides
Project/Area Number |
26450201
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Forest science
|
Research Institution | University of the Ryukyus |
Principal Investigator |
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
Keywords | マングローブ / 冠水 / 枝枯病 / 病原菌 / 樹形形成 / 内生菌 / 寄生菌 / 罹病位置 / 潮汐 / 樹形 / メヒルギ / ヒルギダマシ / 琉球列島 / 樹木内生菌 / 樹木病害 / 環境ストレス |
Outline of Final Research Achievements |
Among 7 mangrove species in the Ryukyu Islands, Kandelia obovata and Avicennia marina trees showed the frequent damages by branch dieback diseases. Severe dieback symptoms distorting tree form were often observed on the branch located just over the water revel at a high tide on the adult edge trees of the both species. The affected trees of the both species also showed the twig damage in the upper part of their crown caused by a few weakly pathogenic fungi, including species known as tree endophytes. K. obovata and A. marina are known as a fringing mangrove component. The height of adult trees at the edge of the stands become smaller, and their crown develops in the flat, table-like form by the diseases and tides, which can promote their tolerance to the wind and wave power. The occurrence of branch and twig dieback on the edge tree of the mangrove stands can be one of the reason why K. obovata and A. marina are adapted to be fringing mangroves in the Ryukyu Islands.
|
Report
(4 results)
Research Products
(7 results)