Grant-in-Aid for Scientific Research (A)
|Research Institution||KYOTO UNIVERSITY|
AZUMA Jun-ichi Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (80115782)
TAKEDA Hiroshi Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (60109048)
KATAYAMA Yukio Kyoto University, Graduate School of Agriculture, Associate Professor, 農学研究科, 助教授 (30026512)
KOSAKI Takashi Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (00144345)
TAKAFUJI Akio Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (50026598)
TSUDA Mitsuya Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (10026578)
|Project Fiscal Year
1996 – 1998
Completed(Fiscal Year 1998)
|Budget Amount *help
¥29,900,000 (Direct Cost : ¥29,900,000)
Fiscal Year 1998 : ¥3,500,000 (Direct Cost : ¥3,500,000)
Fiscal Year 1997 : ¥10,300,000 (Direct Cost : ¥10,300,000)
Fiscal Year 1996 : ¥16,100,000 (Direct Cost : ¥16,100,000)
|Keywords||formation of forest / sustainability / molecular biology / factors of sustainability / formation / forest / 森林の形成 / 持続性 / 分子生物学 / 持続性に関する因子 / 形成 / 森林|
Accumulation, maintaining and recycling of organic matter and nutrients were very important for bio-diversity in a plant-degrader-soil system. Factors for achievement of formation and sustainability of forest are, however, not fully characterized especially in points of biochemical and molecular biological aspects. During the research works financially supported by this Grant-in-Aid for Scientific Research, biochemical and molecular biological studies on interacting factors which operate in a plant-soil-water system on earth have been initiated.
The abstract of the results given by this research work is summarized below.
1) On account of biosynthesis and biodegradation of plant cell-wall constituents which are the major subject for recycling of biomass, mechanisms which operate in the biosynthesis and biodegradation of cellulose were analyzed.
2) Salt and quality of water markedly affects the growth of plants in land of earth. Both qualitative and quantitative analyses of micro mineral el
ements in water and plants in some desert regions.
3) Differences in recycling systems of organic matter in forest eco-systems among tropical, temperate and frigid regions on earth have been clarified.
4) Movement of gasses, water, nutrients and mineral elements in fields of forest, desert and water-front have been analyzed.
5) The effects of plant volatiles on predatory insects have been analyzed in relation to the plant-predator-natural enemy system. In addition, genetic detection of enzyme variation among spider mites has been applied to characterize distribution profile of predatory insects in the different climate regions of Japan.
6) Because of importance of root-fungi for growth of woody plants especially in a tropical forest, inter- actions between plants and fungi have been analyzed in addition to genetic phylogeny analysis of fungi.
7) Functions of soil and soil organisms in the process of growth of woody plants have been analyzed.
The most important result was in that the good interactions between different organisms including plants, animals, insects and microorganisms together with good interactions between soil and woody plants were premise for maintaining and creating forest. These interactions may affect enzyme activities and genetic diversity. Less