干旱区生态环境知识资源中心(Arid): Leave or Stay: Simulating Motility and Fitness of Microorganisms in Dynamic Aquatic Ecosystems

Arid

DOI	10.3390/biology10101019
	Leave or Stay: Simulating Motility and Fitness of Microorganisms in Dynamic Aquatic Ecosystems
	Klimenko, Alexandra; Matushkin, Yury; Kolchanov, Nikolay; Lashin, Sergey
通讯作者	Klimenko, A (corresponding author), Russian Acad Sci, Inst Cytol & Genet, Siberian Branch, Syst Biol Dept, Lavrentiev Ave 10, Novosibirsk 630090, Russia. ; Klimenko, A (corresponding author), Russian Acad Sci, Inst Cytol & Genet, Siberian Branch, Kurchatov Genom Ctr, Lavrentiev Ave 10, Novosibirsk 630090, Russia.
来源期刊	BIOLOGY-BASEL
EISSN	2079-7737
出版年	2021
卷号	10 期号:10
英文摘要	Simple Summary:& nbsp;Motile bacteria are widespread in various water ecosystems along with nonmotile species, which posits the question: what makes motility an advantage in such habitats, and under what conditions? This simulation study addresses these problems using a computer model of competition of two microbial species: Nomad of a motile population and Settler of a sedentary one. We simulated their competition under various environmental conditions such as the nutrient availability and frequency of changes in the location of the nutrient source as well as depending on some population parameters determining how much energy it takes for a bacterium to migrate and what the effect of density-dependent mortality is on the outcome of Settler vs. Nomad competition. We showed that dynamic and nutrient-scarce environments favour motile populations, whereas nutrient-rich and stagnant environments promote sedentary microorganisms. Moreover, the energetic costs of migration determine whether or not the motile population outcompetes the sedentary one, though it also depends on such conditions as nutrient availability. There is also another way for Settler to succeed even without penalties for migration-by grasping an opportunity to occupy the nutrient source, bringing about a biotic desert around it, which cannot be overcome by Nomad constantly searching for locally optimal conditions. Motility is a key adaptation factor in scarce marine environments inhabited by bacteria. The question of how a capacity for adaptive migrations influences the success of a microbial population in various conditions is a challenge addressed in this study. We employed the agent-based model of competition of motile and sedentary microbial populations in a confined aquatic environment supplied with a periodic batch nutrient source to assess the fitness of both. Such factors as nutrient concentration in a batch, batch period, mortality type and energetic costs of migration were considered to determine the conditions favouring different strategies: Nomad of a motile population and Settler of a sedentary one. The modelling results demonstrate that dynamic and nutrient-scarce environments favour motile populations, whereas nutrient-rich and stagnant environments promote sedentary microorganisms. Energetic costs of migration determine whether or not the Nomad strategy of the motile population is successful, though it also depends on such conditions as nutrient availability. Even without penalties for migration, under certain conditions, the sedentary Settler population dominates in the ecosystem. It is achieved by decreasing the local nutrient availability near the nutrient source, as motile populations relying on a local optimizing strategy tend to follow benign conditions and fail, enduring stress associated with crossing the valleys of suboptimal nutrient availability.
英文关键词	motility migratory costs marine bacteria agent-based modelling ecological modelling
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000714041900001
WOS关键词	BACTERIAL CHEMOTAXIS ; EVOLUTIONARY CONSTRUCTOR ; MARINE BACTERIOPLANKTON ; GROWTH-RATE ; MODEL ; HETEROGENEITY ; COMMUNITY ; LIFE
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368330
作者单位	[Klimenko, Alexandra; Matushkin, Yury; Kolchanov, Nikolay; Lashin, Sergey] Russian Acad Sci, Inst Cytol & Genet, Siberian Branch, Syst Biol Dept, Lavrentiev Ave 10, Novosibirsk 630090, Russia; [Klimenko, Alexandra; Matushkin, Yury; Kolchanov, Nikolay; Lashin, Sergey] Russian Acad Sci, Inst Cytol & Genet, Siberian Branch, Kurchatov Genom Ctr, Lavrentiev Ave 10, Novosibirsk 630090, Russia; [Matushkin, Yury; Kolchanov, Nikolay; Lashin, Sergey] Novosibirsk State Univ, Nat Sci Dept, Pirogova St 1, Novosibirsk 630090, Russia
推荐引用方式 GB/T 7714	Klimenko, Alexandra,Matushkin, Yury,Kolchanov, Nikolay,et al. Leave or Stay: Simulating Motility and Fitness of Microorganisms in Dynamic Aquatic Ecosystems[J],2021,10(10).
APA	Klimenko, Alexandra,Matushkin, Yury,Kolchanov, Nikolay,&Lashin, Sergey.(2021).Leave or Stay: Simulating Motility and Fitness of Microorganisms in Dynamic Aquatic Ecosystems.BIOLOGY-BASEL,10(10).
MLA	Klimenko, Alexandra,et al."Leave or Stay: Simulating Motility and Fitness of Microorganisms in Dynamic Aquatic Ecosystems".BIOLOGY-BASEL 10.10(2021).