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首页> 外文OA文献 >Growth and Anatomical Parameters of Adventitious Roots Formed on Mung Bean Hypocotyls Are Correlated with Galactoglucomannan Oligosaccharides Structure
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Growth and Anatomical Parameters of Adventitious Roots Formed on Mung Bean Hypocotyls Are Correlated with Galactoglucomannan Oligosaccharides Structure

机译：绿豆下胚轴上不定根的生长和解剖参数与半乳甘露聚糖寡糖结构相关。

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摘要

The effect of galactoglucomannan oligosaccharides (GGMOs) compared with chemically modified oligosaccharides, GGMOs-g (with reduced number of D-galactose side chains) and GGMOs-r (with reduced reducing ends) on mung bean (Vigna radiata (L.) Wilczek) adventitious roots formation, elongation, and anatomical structure have been studied. All types of oligosaccharides influenced adventitious root formation in the same way: stimulation in the absence of exogenous auxin and inhibition in the presence of exogenous auxin. Both reactions are probably related with the presence/content of endogenous auxin in plant cuttings. However, the adventitious root length was inhibited by GGMOs both in the absence as well as in the presence of auxin (IBA or NAA), while GGMOs-g inhibition was significantly weaker compared with GGMOs. GGMOs-r were without significant difference on both processes, compared with GGMOs. GGMOs affected not only the adventitious root length but also their anatomy in dependence on the combination with certain type of auxin. The oligosaccharides influenced cortical cells division, which was reflected in the cortex area and in the root diameter. All processes followed were dependent on oligosaccharides chemical structure. The results suggest also that GGM-derived oligosaccharides may play an important role in adventitious roots elongation but not in their formation.
机译：半乳葡甘露聚糖寡糖（GGMOs）与化学修饰的寡糖GGMOs-g（D-半乳糖侧链数量减少）和GGMOs-r（还原端减少）对绿豆（Vigna radiata（L.）Wilczek）的影响研究了不定根的形成，伸长和解剖结构。所有类型的寡糖都以相同的方式影响不定根的形成：在不存在外源生长素的情况下进行刺激，在存在外源生长素的情况下进行抑制。这两个反应都可能与植物插条中内源性生长素的存在/含量有关。然而，不存在和存在生长素（IBA或NAA）的情况下，GGMO抑制不定根的长度，而与GGMO相比，GGMOs-g的抑制作用明显弱。与GGMOs相比，GGMOs-r在这两个过程上均无显着差异。 GGMO不仅影响不定根的长度，而且还依赖于与某些类型的生长素的组合影响其解剖结构。寡糖影响皮质细胞的分裂，这反映在皮质区域和根部直径中。遵循的所有过程均取决于寡糖的化学结构。结果还表明，源自GGM的寡糖可能在不定根的延伸中起重要作用，但在其形成中却不起作用。

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