gravitropism


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

gravitropism

[grə′vi·trə‚piz·əm]
(botany)
References in periodicals archive ?
Role of cytokinin and auxin in shaping root architecture: regulating vascular differentiation, lateral root initiation, root apical dominance and root gravitropism.
Altered gravitropic response, amyloplast sedimentation and circumutation in the Arabidopsis shoot gravitropism 5 mutant are associated with reduced starch levels.
Gravitropism in Ceratopteris richardii gametophytes other than in the rhizoids has not yet been examined.
Gravitropism of Ceratopteris richardii gametophytes was evaluated in 9-day old gametophytes grown on agar medium in the dark.
The most favored hypothesis is "starch-statolith hypothesis" but the precise molecular mechanism of gravitropism is still unknown.
2000), however, discussed how root architecture is principally controlled by gravitropism, where gravitropism determines the depth at which laterals form.
While there are a number of long-appreciated examples of gravitropism involving intact higher plants (Larsen, 1962; Firn & Myers, 1987; Salisbury, 1993) and higher fungi (Moore, 1991), and even explanted organs such as the pulvini of grasses (Kaufman et al.
As already mentioned, however, there are a number of reasons other than the study of gravitropism at the cell level to warrant the study of higher plant cells in the space environment.
Five of these mutants displays hypocotyl gravitropism and only one has a significantly increased root length.