HCG36-P01

Room:Convention Hall

Time:May 24 18:15-19:30

Closed bio-ecosystems by the systems of organisms
TOMITA-YOKOTANI, Kaori1∗
1

University of Tsukuba

Various species of living organisms on the earth have evolved for a long time. They are equipped with several importantfunctions affecting each other. Knowledge on these functions and interactions with ecological factors is essential to secure adesign of a closed-ecosystem with a limited number of living species under severe environments, such as space and deep sea
or desert. This session will discuss biological and technical systems for the establishment of closed systems shown in several
research reports. I will introduce this research.
Keywords: Closed bio-ecosystem, Severe environment, Space experiment

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HCG36-P02

Room:Convention Hall

Time:May 24 18:15-19:30

Proteins involved in desiccation tolerance of Nostoc sp. HK-01
ABE, Tomoko1∗ ; IIMURO, Rurika1 ; KIMURA, Shunnta2 ; KATHO, Hiroshi4 ; KIMURA, Yasuko3 ;TOMITA-YOKOTANI, Kaori2
1

Tokyo Denki University, 2 University of Tsukuba, 3 Mie University, 4 Jumonji University

Nostoc sp. HK-01 is one of terrestrial cyanobacterium having a tolerance to desiccation stress and it has several ability,photosynthesis, nitrogen fixation and usefulness as a food, it is thought that it can be used for bio-chemical circulation in a closedecosystem, including space.
In this study, we searched for the proteins that play an important role in the desiccation stress response. A study on desiccation
tolerance predicted at the time of introduction to a closed bio-ecosystem is necessary. To investigate expression changes of theproteins in Nostoc sp. HK-01 cells, the proteins were analyzed by SDS-polyacrylamide gel electrophoresis. In the course ofdesiccation, an increased level of expression of a certain was detected.

Keywords: cyanobacteria, Nostoc sp., desiccation tolerance, stress protein

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HCG36-P03

Room:Convention Hall

Time:May 24 18:15-19:30

Production and maintenance of the most useful tree in a closed environment
ABE, Yusuke1∗ ; KIMURA, Shunta1 ; KATOGI, Hitomi1 ; SATO, Seigo1 ; BABA, Kei’ichi2 ; KATOH, Hiroshi3 ;SUZUKI, Toshisada4 ; KATAYAMA, Takeshi4 ; MATSUMOTO, Asako5 ; TOMITA-YOKOTANI, Kaori1
1

University of Tsukuba, 2 Kyoto University, 3 Mie University, 4 Kagawa University, 5 Forestry and Forest Products Research Institute
Trees can have several important roles; oxygen supply, carbon fixation, materials and functional substances for human especially in closed bio-ecosystems. In general, the genetic background of all productive trees are basically different because of cross? pollination. We are now screening useful trees and their maintenance techniques using several traditional methods of trees
planting. Species of Sakura are originally grown in the Mt. Fuji area, oligotrophic location. We are trying to create the best
useful woody plant under closed bio-ecosystems with ”Mamezakura”, Prunus incisa , as a model tree.

Keywords: Closed bio-ecosystems, Tree planting, Prunus sp., useful tree

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HCG36-P04

Room:Convention Hall

Time:May 24 18:15-19:30

Analysis of filamentous fungal cell wall components to study the existence of endophytes
KATOGI, Hitomi1∗ ; YOKOSHIMA, Mika1 ; FUJIMORI, Shohei1 ; KIMURA, Shunta1 ; SATO, Seigo1 ;TOMITA-YOKOTANI, Kaori1
1

University of Tsukuba

Endophyte is an organism that lives inside a plant. Endophytes of the ergot fungus family Neotyphodium reproduce byproducing seeds, although the life cycle of the endophyte remains unclear. Tall fescue (Festuca arundinacea ) non-infected andinfected with Neotyphodium sp. Fe-047 were used as materials in this study. Chitin is a component of the filamentous fungal
cell wall. Chitin is decomposed to (GlcNAc)2 by an enzyme and we analyzed the amount of (GlcNAc)2 that can be produced.
This analysis has advantages compared to the already investigated methods using proteins or genes.
There are 80-90 % of land plants living together with filamentous fungi. The symbiotic relationships change between the plantand endophyte under microgravity conditions. We will discuss the value of this research method for symbiotic relationships
between plants and endophytes in an artificial closed bio-ecosystem.
Keywords: endophyte, symbiosis, closed bio-ecosystem

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HCG36-P05

Room:Convention Hall

Time:May 24 18:15-19:30

Developing a water source forest conserved in a suburban park into an educational space
TAKEDA, Mie1∗
1

Aichi Institute of TechnologyPeople who still use spring water for paddy fields and daily living know how to cherish the blessings of nature. In contrast, it isdifficult for people in the modern age to learn that water from nature is a precious resource, while water resources are of serious
global concern.
The aim of the project was to conduct investigations on soil, water quality, aquatic organisms, and vegetation in the water
source forest by researchers in respective disciplines and develop it into an educational space to facilitate education for sustainable
development. The forest, which is now a source of spring water used for paddy fields, serves as a field to pass on how to growthe soil sustainably in a suburban area to the next generation.
Keywords: Environmental Education

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