Centre for Plant Integrative Biology, University of Nottingham, LE12 5RD, UK.
Curr Biol. 2011 Jun 7;21(11):R423-5. doi: 10.1016/j.cub.2011.04.048.
Unlike the plant hormone auxin, the mechanism and function of cytokinin transport is poorly characterised. Two new studies now demonstrate that cytokinins transported from shoot to roots via the phloem are critical for creating mutually exclusive auxin and cytokinin signalling domains that control root vascular patterning.
与植物激素生长素不同，细胞分裂素的运输机制和功能还没有很好地描述。现在的两项新研究表明，通过韧皮部从芽运输到根的细胞分裂素对于创建相互排斥的生长素和细胞分裂素信号域至关重要，这些信号域控制着根的脉管模式形成。
