- 著者
- Yudai Suzuki Kazunari Yokoyama Naomi Sakuramoto Y-H.Taguchi
- 雑誌
- 研究報告バイオ情報学(BIO)
- 巻号頁・発行日
- vol.2013-BIO-34, no.5, pp.1-2, 2013-06-20
Soil microbiological biodiversity has recently been shown to be causally related to soil diseases. In this study, we attempted to elucidate soil microbiological interactions by numerically analyzing the carbon-resource consumption rates in soils provided by a number of domestic companies and research institutes.
- 著者
- Y-h.Taguchi Kazunari Yokoyama
- 雑誌
- 研究報告バイオ情報学(BIO)
- 巻号頁・発行日
- vol.2012-BIO-28, no.10, pp.1-6, 2012-03-21
Soil disease suppression is a worldwide important issue in order to realize stable food supply to people. In spite of that, no established indicators of soil disease suppression have been found out yet. This prevents us from controlling well soil state such that no diseases take place. In this paper, we have proposed a new biological indicator of soil disease suppression; the ability of bacteria to consume carbon resources, which can be automatically observed by Omunilog ID system during a duration of one or two days. This indicator turned out to distinguish disease suppressive soils from others. We have modeled these characteristic time developments of consumption of carbon resources by the simple ecological model where bacteria compete with each other for carbon resources. Measured ecological structure of soil bacteria can fit with the theoretical prediction well. In order to find characteristic features for each of soils, observed time developments are embedded into two dimensional space by non-metric multidimensional method. It results in the almost one dimensional arrangements of embedded points. By analyzing spacial distributions of each carbon resources in the embedded space, healthy soil turns out to have mostly uniform distribution along this one dimensional arrangement. Since sick soil and non-soil example have rather localized distributions, the ecological systems in more disease suppressive soil are both more diverse and more uniform. Since this indicator can be extremely easily and quickly obtained automatically, it is expected to use in order to validate many efforts to try to improve soil before any harvests very much.