The different network modules of bacterial community were aggregated in response to RPE pattern variation. Bacterial community structure significantly changed and tended to shift from r-strategists toward K-strategists with changing labile C: N stoichiometry and soil pH during plant growth stages. The results indicated that negative and positive RPEs occurred on Day 30 and Day 75 after maize planting, respectively. Networks were constructed to identify keystone taxa and to analyze the correlations between network functional modules of bacterial community and C decomposition. Therefore, we conducted an experiment to examine the RPE response to plant growth and nitrogen (N) addition (0 (N0), 150 (N150), and 300 (N300) kg N ha −1) using the 13C natural abundance method in a C 3 soil (paddy soil) - C 4 plant (maize, Zea mays L.) system we then explored the underlying biotic mechanisms using 16S rRNA sequencing techniques. However, it is still uncertain how bacterial community structure regulates RPEs in soil and how RPE patterns respond to plant growth. ![]() Microbial community structure plays a crucial part in soil organic carbon (SOC) decomposition and variation of rhizosphere priming effects (RPEs) during plant growth.
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