摘要
向光反应在植物早期发育过程中具有重要的作用，是植物器官适应环境、向有利方向生长的一种良好生物学特性。本文综述近年来植物向光反应研究方面的进展：（1）植物内部组织感受Pfr梯度引起生长再分布，越来越多的证据支持Bruinsma-Hasagawa假说；（2）光强-反应曲线的研究表明，向光反应存在多种反应类型，其中第一次正向光弯曲和第二次正向光弯曲最为普遍；（3）已鉴定了几种参与向光反应的光受体；（4）通过拟南芥突变体的研究确定了影响向光反应的4个基因。
：Phototropism plays an important role during early stage of plant development, and it is a favorable biological characteristic for plant organs to adapt environmental requirement. The recent advances in the studies of phototropism are reviewed in this paper：more and more evidences support Bruinsma-Hasagawa hypothesis that tissues within the plant are affected by the Pfr gradient and express growth redistribution; Fluence-response studies of phototropism indicate that fPIPP and TDP are general types of multiple response types of phototropism; several photoreceptors involving phototropism have been characterized; four genetic loci affecting phototropism have been identified by mutants of Arabidopsis thaliana.
出处
《亚热带植物科学》
2001年第1期64-68,共5页
Subtropical Plant Science
