光系统II
光合作用
非光化学猝灭
消散
叶绿素荧光
猝灭(荧光)
化学物理
叶绿素
生物物理学
生物系统
化学
物理
生物
植物
荧光
热力学
光学
作者
Tsuyoshi Endo,Nozomu Uebayashi,Satoshi Ishida,Masahiro Ikeuchi,Fumihiko Sato
标识
DOI:10.1016/j.plaphy.2014.03.018
摘要
In the field, plants are exposed to fluctuating light, where photosynthesis occurs under conditions far from a steady state. Excess energy dissipation associated with energy quenching of chlorophyll fluorescence (qE) functions as an efficient photo-protection mechanism in photosystem II. PsbS is an important regulator of qE, especially for the induction phase of qE. Beside the regulatory energy dissipation, some part of energy is lost through relaxation of excited chlorophyll molecules. To date, several models to quantify energy loss through these dissipative pathways in PSII have been proposed. In this short review, we compare and evaluate these models for PSII energy allocation when they are applied to non-steady state photosynthesis. As a case study, an investigation on energy allocation to qE-associated dissipation at PSII under non-steady state photosynthesis using PsbS-deficient rice transformants is introduced. Diurnal and seasonal changes in PSII energy allocation in rice under natural light are also presented. Future perspective of studies on PSII energy allocation is discussed.
科研通智能强力驱动
Strongly Powered by AbleSci AI