Gene regulation networks generate diverse pigmentation patterns in plants.
Gene regulation networks generate diverse pigmentation patterns in plants.
复制标题
基因调节网络在植物中产生各种色素沉着模式。
DOI：
10.4161/psb.29526
复制
发表时间：
2014
影响因子：
2.9
通讯作者：
Schwinn KE
中科院分区：
文献类型：
--
作者：
Albert NW;Davies KM;Schwinn KE
在植物中观察到的色素沉着模式的多样性是由于有色化合物的空间分布和积累而发生的，这也可能与组织的结构变化有关。花青素是类黄酮，为植物提供红色/紫色/蓝色，通常形成复杂的图案，如斑点，条纹和与静脉相关的色素沉着，特别是在花中。这些模式由MYB-bHLH-WDR（MBW）转录因子复合物的活性决定，该复合物激活花青素苷生物合成基因，导致花青素苷色素积累。最近，我们建立了MBW复杂的控制花青素的合成行为内的基因调控网络，至少在真双子叶植物是保守的。该网络涉及层次结构，强化和反馈机制，允许花青素苷生物合成基因的严格和响应性调节。WDR和R3-MYB蛋白的基因网络和移动的性质为探索色素形成模式的基础和研究陆地植物中MBW组分的进化历史提供了令人兴奋的新机会。
The diversity of pigmentation patterns observed in plants occurs due to the spatial distribution and accumulation of colored compounds, which may also be associated with structural changes to the tissue. Anthocyanins are flavonoids that provide red/purple/blue coloration to plants, often forming complex patterns such as spots, stripes, and vein-associated pigmentation, particularly in flowers. These patterns are determined by the activity of MYB-bHLH-WDR (MBW) transcription factor complexes, which activate the anthocyanin biosynthesis genes, resulting in anthocyanin pigment accumulation. Recently, we established that the MBW complex controlling anthocyanin synthesis acts within a gene regulation network that is conserved within at least the Eudicots. This network involves hierarchy, reinforcement, and feedback mechanisms that allow for stringent and responsive regulation of the anthocyanin biosynthesis genes. The gene network and mobile nature of the WDR and R3-MYB proteins provide exciting new opportunities to explore the basis of pigmentation patterning, and to investigate the evolutionary history of the MBW components in land plants.