화학공학소재연구정보센터
AIChE Journal, Vol.62, No.4, 1331-1346, 2016
Understanding hydrotropism: A chemical engineering perspective
The mechanism of root hydrotropism has been a mystery for many years, due to the complexity of the interactions between the external environment and plants themselves. To gain an engineering perspective, the time-dependent hydrotropism of a single root has been modeled, initially using a two-dimensional model. Based on the water and nutrient distribution in rhizosphere as computed with the conservation equations, together with a basic reaction-kinetics-type growth model and an intuitive root bending model, it has been found that the root already possesses the property of hydrotropism. For the first time, hydrotropism could be tracked by a process engineering model, which is a new idea based on chemical engineering concept, suggesting an alternative mechanism of hydrotropism. The effects of different initial root widths, lengths, and other growth/transport coefficients on root hydrotropism have then been explored. (c) 2015 American Institute of Chemical Engineers AIChE J, 62: 1331-1346, 2016