2001 Fiscal Year Final Research Report Summary
Study of Hormone-mediated pattern formation in seedling of plants
| Project/Area Number |
12834011
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Institution | Kyushu University |
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Principal Investigator |
OKABE Hirotaka Kyushu University, Graduate School of Engineering, Associate Professor, 大学院・工学研究院, 助教授 (90221142)
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| Co-Investigator(Kenkyū-buntansha) |
KAI Shoichi Kyushu University, Graduate School of Engineering, Professor, 大学院・工学研究院, 教授 (20112295)
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| Project Period (FY) |
2000 – 2001
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| Keywords | plant / edge effect / allelopathy / cluster / nonlinear interaction / phytohormone / pattern / periodicity |
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| Research Abstract |
An ecologically relevant pattern formation process mediated by hormonal interactions among growing seedlings is modeled based on the experimental observations on the effects of indole acetic acid, which can act as an inhibitor and activator of root growth depending on its concentration.
In the absence of any lateral root with constant hormone-sensitivity, the edge effect phenomenon is obtained depending on the secretion rate of hormone from the main root. Introduction of growth-stage-dependent hormone-sensitivity drastically amplifies the initial randomness, resulting in spatially irregular macroscopic patterns. When the lateral root growth is introduced, periodic patterns are obtained whose periodicity depends on the length of lateral roots.
The growth-stage-dependent hormone-sensitivity and the lateral root growth are crucial for macroscopic periodic-pattern formation.
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