Study on the modeling of colony pattern selection of filamentous fungi
丝状真菌菌落模式选择模型研究
基本信息
- 批准号:10640390
- 负责人:
- 金额:$ 1.6万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 1999
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Filamentous fungi show variety of colony growth patterns depending upon the environmental conditions. In this study, a multi-layer mycelial colony that had three main parameters of nutrient level, nutrient diffusion and hyphal growth rate was constructed. By comparing the model growth with the real fungal colony growth, the selection rules of mycelial colony patterns were investigated.Without nutrient diffusion, the model colonies exhibited equivalent self-affinity in their roughening of colony fronts at any nutrient levels the colony growth can be maintained. The same result was also obtained for the cases of infinite nutrient limit case. However, the growth exponents of front roughness were found dependent upon the nutrient levels for the multi-layer models. These results showed that the hyphal production in the interior of the colonized space affected the roughening of colony fronts.The nutrient diffusion brought about the variation of growth patterns. Particularly, as the growth ra … More te was lowered at fixed nutrient levels and nutrient diffusion coefficient, the colony exhibited reaction-limited growth and formed densely aggregated patterns. Under this condition, as the nutrient level was lowered, the ramified morphology was found to develop through reaction-limited process.By comparing the model colony morphology with the real mycelial colonies, the pattern selection rule was found to exist in the inherent manner of response in the hyphal growth rate to the environmental nutrient levels. The wild and mutant strains of Aspergillus nidulans were grouped into two types; those maintained uniform growth at any nutrient and agar levels, and those exhibited ramified patterns at low nutrient levels. By measuring the colony expansion rates at various nutrient levels, these morphological types can be related with the mutation-induced decay of the growth rate at low nutrient levels.Further, to consider the effect of growth inhibition by the hyphal aging etc., long-term measurement of hyphal growth rate was commenced for A. nidulans and other strains. Gradual or steep decay of hyphal growth rate was found in the growth process, and it was suggested that the manner of growth rate reduction was dependent upon the environmental nutrient levels. Less
丝状真菌根据环境条件表现出多种菌落生长模式。在这项研究中,一个多层的菌丝菌落,营养水平,营养扩散和菌丝生长速度的三个主要参数构建。通过与真实的菌落生长的比较,探讨了菌丝菌落形态的选择规律,在没有营养扩散的情况下,模型菌落在任何营养水平下都表现出相当的自亲和性,菌落前沿的粗糙化程度都相当,殖民地生长都能维持。对于无限营养盐极限的情况也得到了同样的结果。然而,前粗糙度的增长指数被发现依赖于营养水平的多层模型。这些结果表明,菌丝在定殖空间内部的生产影响了菌落前沿的粗糙化,营养物质的扩散引起了生长模式的变化。特别是,随着增长率的提高, ...更多信息 在固定营养水平和营养扩散系数下,TE降低,殖民地表现出反应限制生长,并形成密集的聚集模式。在此条件下,随着营养水平的降低,分枝形态通过反应限制过程发展,通过与真实的菌丝菌落形态的比较,发现模式选择规则存在于菌丝生长速率对环境营养水平的内在响应方式中。构巢曲霉的野生型和突变型菌株被分为两种类型,在任何营养和琼脂水平下保持均匀生长的菌株,以及在低营养水平下表现出分枝模式的菌株。通过测定不同营养水平下的殖民地扩展速率,这些形态类型可以与低营养水平下突变诱导的生长速率衰减相关联。此外,考虑到菌丝老化等生长抑制的影响,开始对A. nidulans和其他菌株。菌丝生长速率在生长过程中有逐渐或急剧衰减的现象,表明生长速率衰减的方式与环境营养水平有关。少
项目成果
期刊论文数量(15)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Shu Matsuura: "Colony Patterning of Aspergillus oryzae on agar media"Mycoscience. vol.39. 379-390 (1998)
Shu Matsuura:“米曲霉在琼脂培养基上的菌落模式”Mycoscience。
- DOI:
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- 影响因子:0
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- 通讯作者:
松浦 執: "糸状菌コロニーの空間占有と成長律速要因" 東海大学紀要開発工学部. Vol.7. 57-64 (1997)
Osamu Matsuura:“丝状真菌菌落的空间占用和生长速度决定因素”东海大学开发工程学院通报第 7 卷(1997 年)。
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- 影响因子:0
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Shu Matsuura(coauthor): "Dictionary of Science on Form"Asakura Pub. (in press).
松浦修(合着):《形式科学辞典》朝仓Pub.
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- 发表时间:
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- 影响因子:0
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Shu Matsuura: "Colony Growth of Aspergillus nidulans on D_2O Media Supplemented with Cyclodextrion" The Japanese Journal of Deuterium Science. Vol.7,No.1. 37-41 (1998)
Shu Matsuura:“构巢曲霉在补充环糊精的 D_2O 培养基上的菌落生长”《日本氘科学杂志》。
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- 影响因子:0
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MATSUURA Shu其他文献
MATSUURA Shu的其他文献
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{{ truncateString('MATSUURA Shu', 18)}}的其他基金
Development of a Trans-Field Science Learning System with a Humanoid Robot as an Interface
以人形机器人为界面的跨领域科学学习系统的开发
- 批准号:
15K00912 - 财政年份:2015
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Construction of a Unified Topic Maps-Driven e-Learning for Explorative Science Learning
构建统一主题图驱动的探索性科学学习电子学习
- 批准号:
24501042 - 财政年份:2012
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Construction of Synthetic e-Learning to Explore Science Learning Based on Multi-Dimensional Topic Maps
基于多维主题图构建综合电子学习探索科学学习
- 批准号:
21500842 - 财政年份:2009
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of Introductory Physics e-Learning Based on Knowledge Representation by Topic Maps.
基于主题图知识表示的入门物理电子学习的发展。
- 批准号:
19500760 - 财政年份:2007
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of e-Learning Materials for Introductory Physics Education
物理入门教育电子学习材料的开发
- 批准号:
16500560 - 财政年份:2004
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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