Temperature and pH mediate stoichiometric constraints of organically derived soil nutrients.

ABSTRACT: It remains unclear how warming will affect resource flows during soil organic matter (SOM) decomposition, in part due to uncertainty in how exoenzymes produced by microbes and roots will function. Rising temperatures can enhance the activity of most exoenzymes, but soil pH can impose limitations on their catalytic efficiency. The effects of temperature and pH on enzyme activity are often examined in environmental samples, but purified enzyme kinetics reveal fundamental attributes of enzymes' intrinsic temperature responses and how relative release of decay-liberated resources (their flow ratios) can change with environmental conditions. In this paper, we illuminate the principle that fundamental, biochemical limitations on SOM release of C, N, and P during decay, and differential exoenzyme

SUBMITTER: Souza LFT 

PROVIDER: S-EPMC9298831 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature