Pressure‐dependent growth controls 3D architecture of Pseudomonas putida microcolonies

Author:

Kim Juhyun1,de Lorenzo Víctor2ORCID,Goñi‐Moreno Ángel3ORCID

Affiliation:

1. School of Life Science BK21 FOUR KNU Creative BioResearch Group Kyungpook National University Daegu Republic of Korea

2. Systems Biology Department Centro Nacional de Biotecnología (CNB‐CSIC) Cantoblanco‐Madrid Spain

3. Centro de Biotecnología y Genómica de Plantas Universidad Politécnica de Madrid (UPM)‐Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC) Madrid Spain

Abstract

AbstractColony formation is key to many ecological and biotechnological processes. In its early stages, colony formation involves the concourse of a number of physical and biological parameters for generation of a distinct 3D structure—the specific influence of which remains unclear. We focused on a thus far neglected aspect of the process, specifically the consequences of the differential pressure experienced by cells in the middle of a colony versus that endured by bacteria located in the growing periphery. This feature was characterized experimentally in the soil bacterium Pseudomonas putida. Using an agent‐based model we recreated the growth of microcolonies in a scenario in which pressure was the only parameter affecting proliferation of cells. Simulations exposed that, due to constant collisions with other growing bacteria, cells have virtually no free space to move sideways, thereby delaying growth and boosting chances of overlapping on top of each other. This scenario was tested experimentally on agar surfaces. Comparison between experiments and simulations suggested that the inside/outside differential pressure determines growth, both timewise and in terms of spatial directions, eventually moulding colony shape. We thus argue that—at least in the case studied—mere physical pressure of growing cells suffices to explain key dynamics of colony formation.

Funder

Comunidad de Madrid

Ministerio de Ciencia e Innovación

Publisher

Wiley

Subject

Agricultural and Biological Sciences (miscellaneous),Ecology, Evolution, Behavior and Systematics

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3