首页 | 本学科首页   官方微博 | 高级检索  
     


Auxin,gibberellins and the gravitropic response of grass leaf sheath pulvini
Authors:John J Ross  Carla M Wolbang
Affiliation:1.School of Plant Science; University of Tasmania; Hobart; Tasmania, Australia;2.Epilepsy Research Centre; University of Melbourne; Heidelberg West; Victoria, Australia
Abstract:The role of hormones in mediating tropic responses has been a central question in plant biology. Another key issue concerns how interactions between hormones regulate plant responses. In the September 2007 issue of Physiologia Plantarum, we published a paper relevant to both these questions.1 This paper focuses on gravitropism in the barley leaf sheath pulvinus. The results support the Cholodny-Went theory on hormones and tropic responses, and highlight how an environmental factor (gravity) appears to first affect auxin content and consequently that of bioactive gibberellins (GAs). It appears that while GAs do not actually trigger the gravitropic bending of barley pulvini, they do act to magnify the bending response.Key words: auxin, gibberellin, Cholodny-Went theory, barley, pulvinus, gravitropism, mutant
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号