关键词: 植物, 向光反应

Abstract: 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.

Key words: plant, phototropism