Enzymatic Activity and Temperature
With the obvious inputs of lighting, gas exchange, and irrigation well under control, the grower’s efforts of staying above the compensation point and showing resilience to pestilence in the vegetative phase is primarily dictated by temperature. We know that the simple effects of temperature extremes will inhibit the absorption of mineral elements and water, but did you know that the most important factor is enzymatic activity? I’m not talking about extracellular digestive enzymes you add to your reservoir to eat up old roots. I’m talking about the intracellular enzymes that are naturally
Enzymes are the key to all living systems. They are complex protein substances made of long, linear chains of amino acids that fold around to produce a unique three-dimensional product. Every biochemical action that takes place in nature is caused by a specific enzyme, which obviously makes them vital to plant growth. Enzymes work by lowering the activation energy for a reaction, thus dramatically decreasing the rate of energy (sugar) consumption needed to spark the same reactions without the enzyme. High temperature in the indoor garden or reservoir will denature the enzyme, that is, unfold and inactivate the three-dimensional structure of the protein. The three-dimensional shape is very important, with any destruction of the shape reducing the enzymes efficacy by 95%.
Heath Robinson