Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41586-019-1733-y |
Chemotaxis as a navigation strategy to boost range expansion | |
Jonas Cremer; Tomoya Honda; Ying Tang; Jerome Wong-Ng; Massimo Vergassola; Terence Hwa | |
2019-11-06 | |
发表期刊 | Nature
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出版年 | 2019 |
卷号 | 575 |
英文摘要 | Bacterial chemotaxis, the directed movement of cells along gradients of chemoattractants, is among the best-characterized subjects in molecular biology1,2,3,4,5,6,7,8,9,10, but much less is known about its physiological roles11. It is commonly seen as a starvation response when nutrients run out, or as an escape response from harmful situations12,13,14,15,16. Here we identify an alternative role of chemotaxis by systematically examining the spatiotemporal dynamics of Escherichia coli in soft agar12,17,18. Chemotaxis in nutrient-replete conditions promotes the expansion of bacterial populations into unoccupied territories well before nutrients run out in the current environment. Low levels of chemoattractants act as aroma-like cues in this process, establishing the direction and enhancing the speed of population movement along the self-generated attractant gradients. This process of navigated range expansion spreads faster and yields larger population gains than unguided expansion following the canonical Fisher鈥揔olmogorov dynamics19,20 and is therefore a general strategy to promote population growth in spatially extended, nutrient-replete environments. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203157 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | Jonas Cremer,Tomoya Honda,Ying Tang,et al. Chemotaxis as a navigation strategy to boost range expansion[J]. Nature,2019,575. |
APA | Jonas Cremer,Tomoya Honda,Ying Tang,Jerome Wong-Ng,Massimo Vergassola,&Terence Hwa.(2019).Chemotaxis as a navigation strategy to boost range expansion.Nature,575. |
MLA | Jonas Cremer,et al."Chemotaxis as a navigation strategy to boost range expansion".Nature 575(2019). |
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