重力屈性における重力感受とシグナリングのメカニズム

抄録

Plant tropisms have fascinated plant biologists since the early work of Charles and Francis Darwin.　Today, it is well known that the tropisms play important role in formation of plant architecture to gain environmental resource such as light, water and nutrients, effectively.　In gravitropism, stems grow upward and roots elongate toward downward.　It has been critical challenge to understand how plants sense the direction of gravity and convert it into biochemical signal.　This review focuses on recent advance in gravity sensing mechanisms.　Then, we introduce the identification and molecular function of LAZY1 family genes as a factor involved in gravity signaling process.　Finally, we discuss the contribution of gravitropism on the regulation of growth angle in lateral organs that the mechanism leads to the determination of entire plant architecture.