Soil microbial phosphorus (P) recycling is crucial for maintaining ecosystem P balance, especially with increasing nitrogen (N) availability and declining P resources. This study investigates how P is recycled intracellularly (into DNA and phospholipids) and extracellularly (via microbial death-growth dynamics) under contrasting P and carbon (C) conditions. Using ³³P and ¹⁴C labeling, the researchers tracked P incorporation into microbial DNA and phospholipids in low and high P soils with varying C and N additions. In low P soils, microorganisms preferentially allocated P to phospholipids, which are rapidly metabolized, especially with added C. This was linked to high abundances of microbial groups with fast phospholipid turnover. In contrast, high P soils saw more P allocated to DNA, supporting replicative growth and fungal copiotrophs. This suggests that microbial P recycling strategies adapt to P availability, with intracellular recycling under low P and extracellular recycling under high P. The study highlights the role of phospholipids and DNA in P cycling, showing that phospholipids act as a variable P storage under P limitation, while DNA is used for replication and repair. The findings reveal that microbial communities in low P soils prioritize intracellular P recycling, whereas those in high P soils rely on extracellular P recycling through death-growth dynamics. These results enhance understanding of microbial adaptation to P deficiency and the specific functions of phospholipids and DNA in P cycling. The study underscores the importance of considering both DNA and phospholipids in experiments on soil P turnover, as phospholipids play a significant role in P cycling, especially under P limitation. Further research is needed to generalize these findings across different soil types and nutrient conditions.Soil microbial phosphorus (P) recycling is crucial for maintaining ecosystem P balance, especially with increasing nitrogen (N) availability and declining P resources. This study investigates how P is recycled intracellularly (into DNA and phospholipids) and extracellularly (via microbial death-growth dynamics) under contrasting P and carbon (C) conditions. Using ³³P and ¹⁴C labeling, the researchers tracked P incorporation into microbial DNA and phospholipids in low and high P soils with varying C and N additions. In low P soils, microorganisms preferentially allocated P to phospholipids, which are rapidly metabolized, especially with added C. This was linked to high abundances of microbial groups with fast phospholipid turnover. In contrast, high P soils saw more P allocated to DNA, supporting replicative growth and fungal copiotrophs. This suggests that microbial P recycling strategies adapt to P availability, with intracellular recycling under low P and extracellular recycling under high P. The study highlights the role of phospholipids and DNA in P cycling, showing that phospholipids act as a variable P storage under P limitation, while DNA is used for replication and repair. The findings reveal that microbial communities in low P soils prioritize intracellular P recycling, whereas those in high P soils rely on extracellular P recycling through death-growth dynamics. These results enhance understanding of microbial adaptation to P deficiency and the specific functions of phospholipids and DNA in P cycling. The study underscores the importance of considering both DNA and phospholipids in experiments on soil P turnover, as phospholipids play a significant role in P cycling, especially under P limitation. Further research is needed to generalize these findings across different soil types and nutrient conditions.