2021 Fiscal Year Final Research Report
Mathematical study on the formation and diversity of leaf vein patterns
Project/Area Number |
19K06733
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 44030:Plant molecular biology and physiology-related
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Research Institution | Center for Novel Science Initatives, National Institutes of Natural Sciences |
Principal Investigator |
Hironori Fujita 大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, アストロバイオロジーセンター, 助教 (10552979)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 数理モデル / パターン形成 / 植物発生 / 葉脈パターン / オーキシン(auxin) / PIN1 / 自己組織化 |
Outline of Final Research Achievements |
(1) The vascular pattern of plants is explained by mutual regulation of the plant hormone auxin and its membrane transporter PIN1. However, on the other hand, it has been reported that PIN1-independent vascular is formed. Here, this study showed that vascular pattern can be generated by considering PGP, an auxin transporter other than PIN1. (2) Auxin-PIN1 mutual regulation generates two types of self-organizing patterns of auxin polar transport and spot-like auxin accumulation. We previously showed that the former control can produce various leaf vein patterns, but it was difficult to reproduce the reticular vein pattern. Here we showed that reticular vein pattern can be explained by considering the interaction between the two regulations.
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Free Research Field |
数理生物学
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Academic Significance and Societal Importance of the Research Achievements |
自然界、特に生物においては、様々な時空間的な自己組織的パターンが見られる。その中で、葉脈は植物の葉に形成される維管束であり、とても身近な存在であると同時に、羽状脈、平行脈、二又脈、掌状脈等、非常に多様なパターンを示すことが一般にもよく知られている。今回の研究成果は、その維管束の形成機構および葉脈の示すパターン多様性の形成機構に関して、分子的機構に関しての理解を深めるものである。
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