Title
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The role of brassinosteroids in shoot gravitropism
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Author
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Abstract
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In the current model of gravitropism, negative gravitropic (upward) growth of the shoot of a dicotyledonous plant involves sedimentation of starch-containing plastids (statoliths) in the endodermis (starch sheath). Here we show that high levels of brassinosteroids (BRs) counteract gravitropic growth, while BR deficiency enhances gravitropism irrespective of the presence of a functional starch sheath. These data support a role for BRs as negative regulators of the shoot graviresponse. |
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Language
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English
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Source (journal)
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Plant physiology. - Rockville, Md
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Publication
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Rockville, Md
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2011
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ISSN
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0032-0889
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DOI
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10.1104/PP.111.177873
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Volume/pages
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156
:3
(2011)
, p. 1331-1336
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ISI
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000292294100031
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Full text (Publisher's DOI)
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