顶端优势的兴衰
The fall and rise of apical dominance.
作者信息
Leyser Ottoline
机构信息
Department of Biology, Area 11, University of York, Heslington, York YO10 5YW, UK.
出版信息
Curr Opin Genet Dev. 2005 Aug;15(4):468-71. doi: 10.1016/j.gde.2005.06.010.
PMID:15964756
Abstract
The plant hormone auxin, synthesised in the shoot apex, moves down the stem and inhibits lateral branching. Auxin does not travel upward into the branches, so it must act indirectly; for example, through a second messenger. However, recent work on auxin transport suggests a possible additional mechanism whereby auxin transport in the stem prevents the establishment of auxin transport out of the branches, inhibiting their growth.
摘要
植物激素生长素在茎尖合成，向下运输至茎部，抑制侧枝生长。生长素不会向上运输至侧枝，因此它必定是间接起作用的；例如，通过第二信使发挥作用。然而，最近关于生长素运输的研究表明，可能还存在一种额外的机制，即茎中的生长素运输会阻止生长素向侧枝运输，从而抑制侧枝生长。
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