从熵流看高等植物的源-库关系

Relationship between Source and Sink in Higher Plants from the Point of view of Entropy Fluxes

利用非线性不可逆过程热力学的超熵增率定义了高等植物的源和库。从源库之间的熵流向、熵流环和信息熵入手,探讨了遵循非线性规律的高等植物光合作用、同化物运输、分配及生长发育总和的源库关系,揭示了源库之间相互依赖、共存互促、平衡发展、有序转化和以前馈和反馈方式协同作用相互调节的关系。并阐明了这种关系的分子基础。

The relationship between source and sink in higher plants integrating photosynthesis, transport and distribution of assimilates among the parts, as well as growth, development was reviewed using the theory of nonlinear thermodynamics. The source and sink were defined by extra entropy (δ_xP) of system, e. g. the system was defined as source if δ_xP≥0 at t>to, vice versa, the system was defined as sink if δ_xP<0 at t>t_0. The interdependence, promotion to each other, development equally and transform directly between source and sink were discovered by researching entropy change in higner plants induced fluxes of energy. substrates and information in the parts of plants. The feedfowrd, based on information entropy carried by the genome in plants, and feedback whose carriers are second messeger, hormone and other physiological parameters regulate activities of source and sink of plants co-operatively.