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According to the previously proposed YAS life history strategy framework, microbial life history strategies are divided into the following three categories:
1)Y strategy ( Growth yield strategy ): This type of microorganism can achieve high biomass accumulation by enhancing central metabolism and biosynthesis
2)A strategy (resource acquisition strategy, Resource acquisition strategy ): This type of microorganism can enhance its resource acquisition ability by improving cell movement, competition, and substrate transport and utilization capabilities
3)S strategy ( Stress tolerance strategy ): This type of microorganism can maximize its stress tolerance by reducing investment in other metabolic pathways (eg: DNA damage repair, osmotic protection, drought and salt stress) adaptation and maintenance of cellular and genomic integrity)
Microbiomes are characterized by one or several life history strategies
1)The YAS life history strategy framework holds that strategy Y is dominant in a stress-free and resource-rich environment, while strategy A is dominant in a stress-free and resource-poor environment, and the transition between strategy Y and strategy A is regulated by resource availability .
2)Previous studies have shown that DNA metabolism-related traits are relatively enriched in drier soils, which may be a stress tolerance strategy exhibited by soil microbes to maintain genome integrity, or by soil microbes in arid environments.
Researchers from researcher Li Xiangzhen's team at the Chengdu Institute of Biology, Chinese Academy of Sciences collected 90 topsoil samples along the hydrothermal gradient in the Inner Mongolia steppe and the Qinghai-Tibet Plateau.
Figure 1 KEGG metabolic pathway ( FDR < 0.
Figure 2 Variation in soil microbial life history strategies in grassland ecosystems
The research results were published in the journal Molecular Ecology under the title "The adjustment of life history strategies drives the ecological adaptations of soil microbiota to aridity" .
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