Day and night temperature responses in Arabidopsis: effects on gibberellin and auxin content, cell size, morphology and flowering time.

ABSTRACT: The effect of 16 different day (DT) and night (NT) temperature combinations (DT and NT 12, 17, 22 and 27 degrees C) on rosette leaf growth, flower stem elongation and flowering time in Arabidopsis thaliana Ler was investigated. Final leaf length decreased with increasing NT due to a combination of reduced elongation period and reduced elongation rate. Final stem length increased with increasing DT due to increased elongation rate, and decreased with increasing NT due to a decrease in elongation period. Under NT 27 degrees C, however, stem elongation rate increased greatly, resulting in the same final stem length as under NT 12 degrees C. The transition to flowering was accelerated by increasing NT. A linear regression analysis was performed to clarify the relationship between final leaf le

SUBMITTER: Thingnaes E 

PROVIDER: S-EPMC4243678 | biostudies-literature | 2003 Oct

REPOSITORIES: biostudies-literature