Plants are frequently exposed to herbivory and mechanical damage that result in wounding.Two fundamental strategies,regeneration and healing,are employed by plants upon wounding.How plants make different decisions and...Plants are frequently exposed to herbivory and mechanical damage that result in wounding.Two fundamental strategies,regeneration and healing,are employed by plants upon wounding.How plants make different decisions and how wound healing is sustained until the damaged tissues recover are not fully understood.In this study,we found that local auxin accumulation patterns,determined by wounding modes,may activate different recovery programs in wounded tissues.Wounding triggers transient jasmonic acid(JA)signaling that promotes lignin deposition in the first few hours after wounding occurs.This early response is subsequently relayed to ABA signaling via MYC2.The induced JA signaling promotes ABA biosynthesis to maintain the expression of RAP2.6,a key factor for sustained lignin biosynthesis and the later wound-healing process.Our findings provide mechanistic insights into how plants heal from wounding and clarify the molecular mechanisms that underlie the prolonged healing process following wounding.展开更多
This paper addresses the robust static out- put feedback （SOF） controller design problem for a class of uncertain fuzzy affine systems that are robust against both the plant parameter perturbations and controller g...This paper addresses the robust static out- put feedback （SOF） controller design problem for a class of uncertain fuzzy affine systems that are robust against both the plant parameter perturbations and controller gain variations. More specifically, the purpose is to synthesize a non-fragile piecewise affine SOF controller guaranteeing the stability of the resulting closed-loop fuzzy affine dynamic system with certain performance index. Based on piecewise quadratic Lyapunov functions and applying some convexification pro- cedures, two different approaches are proposed to solve the robust and non-fragile piecewise affine SOF controller syn- thesis problem. It is shown that the piecewise affine controller gains can be obtained by solving a set of linear matrix in- equalities （LMIs）. Finally, simulation examples are given to illustrate the effectiveness of the proposed methods.展开更多
基金supported bygrants from the National Natural ScienceFoundation of China(32400270 and 32425050).
文摘Plants are frequently exposed to herbivory and mechanical damage that result in wounding.Two fundamental strategies,regeneration and healing,are employed by plants upon wounding.How plants make different decisions and how wound healing is sustained until the damaged tissues recover are not fully understood.In this study,we found that local auxin accumulation patterns,determined by wounding modes,may activate different recovery programs in wounded tissues.Wounding triggers transient jasmonic acid(JA)signaling that promotes lignin deposition in the first few hours after wounding occurs.This early response is subsequently relayed to ABA signaling via MYC2.The induced JA signaling promotes ABA biosynthesis to maintain the expression of RAP2.6,a key factor for sustained lignin biosynthesis and the later wound-healing process.Our findings provide mechanistic insights into how plants heal from wounding and clarify the molecular mechanisms that underlie the prolonged healing process following wounding.
文摘This paper addresses the robust static out- put feedback （SOF） controller design problem for a class of uncertain fuzzy affine systems that are robust against both the plant parameter perturbations and controller gain variations. More specifically, the purpose is to synthesize a non-fragile piecewise affine SOF controller guaranteeing the stability of the resulting closed-loop fuzzy affine dynamic system with certain performance index. Based on piecewise quadratic Lyapunov functions and applying some convexification pro- cedures, two different approaches are proposed to solve the robust and non-fragile piecewise affine SOF controller syn- thesis problem. It is shown that the piecewise affine controller gains can be obtained by solving a set of linear matrix in- equalities （LMIs）. Finally, simulation examples are given to illustrate the effectiveness of the proposed methods.
