Shaping of microbial phenotypes by trade-offs

Shaping of microbial phenotypes by trade-offs

18 May 2024 | Manlu Zhu & Xiongfeng Dai
The article by Manlu Zhu and Xiongfeng Dai explores the trade-offs between microbial growth and other important traits such as adaptability, survival, and stress tolerance. The authors highlight how these trade-offs shape microbial phenotypes and drive ecological phenomena such as co-existence, population heterogeneity, and the emergence of oligotrophic and copiotrophic lifestyles. They discuss the mechanistic role of proteome resource allocation in controlling bacterial growth, emphasizing the importance of leaky expression of genes to maintain a reserve of metabolic proteins and ribosomes for rapid adaptation to nutrient transitions. The trade-offs between growth and adaptability are illustrated through examples such as amino acid downshift and carbon diauxie, where slow-growing bacteria exhibit shorter lag phases during nutrient transitions. The authors also delve into the trade-offs between growth and survival, noting that slow growth can enhance stress tolerance and antibiotic resistance. They propose that bet-hedging strategies, such as phenotypic heterogeneity, allow microbes to balance growth and survival in fluctuating environments. Finally, the article discusses the oligotrophic and copiotrophic lifestyles, highlighting the distinct gene regulation strategies and resource allocation patterns of these two types of bacteria. The authors conclude by emphasizing the importance of trade-off principles in shaping microbial growth phenotypes and their ecological implications.The article by Manlu Zhu and Xiongfeng Dai explores the trade-offs between microbial growth and other important traits such as adaptability, survival, and stress tolerance. The authors highlight how these trade-offs shape microbial phenotypes and drive ecological phenomena such as co-existence, population heterogeneity, and the emergence of oligotrophic and copiotrophic lifestyles. They discuss the mechanistic role of proteome resource allocation in controlling bacterial growth, emphasizing the importance of leaky expression of genes to maintain a reserve of metabolic proteins and ribosomes for rapid adaptation to nutrient transitions. The trade-offs between growth and adaptability are illustrated through examples such as amino acid downshift and carbon diauxie, where slow-growing bacteria exhibit shorter lag phases during nutrient transitions. The authors also delve into the trade-offs between growth and survival, noting that slow growth can enhance stress tolerance and antibiotic resistance. They propose that bet-hedging strategies, such as phenotypic heterogeneity, allow microbes to balance growth and survival in fluctuating environments. Finally, the article discusses the oligotrophic and copiotrophic lifestyles, highlighting the distinct gene regulation strategies and resource allocation patterns of these two types of bacteria. The authors conclude by emphasizing the importance of trade-off principles in shaping microbial growth phenotypes and their ecological implications.
Reach us at info@study.space