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The pattern of cuticular blue-fluorescing phenolics deposition during the development of Prunus persica leaves

机译：桃叶发育过程中表皮蓝色荧光酚类物质沉积的规律

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摘要

Although stomatal ontogeny is closely related to the development and maturation of the epidermal tissue, stomatal patterns in relation to cuticle construction and cuticular material deposition during leaf development have not received adequate attention. We observed the deposition of blue-fluorescing cuticular phenolics over guard and epidermal cells, as well as stomatal formation and patterning using the alkali-induced blue fluorescence of the cuticle of Prunus persica leaves. Stomata of different stages of maturity occurred together during leaf development, mainly at the tip of the lamina. The deposition of fluorescing compounds initially appeared over the guard cells of the developing stomata complexes and gradually extended to the neighbouring epidermal cells. Based on the blue fluorescence emitted by the cuticular layers, we constructed digital maps of leaves of different developmental stages, showing the pattern of stomatal formation and deposition of fluorescing compounds. A longitudinal tip-to-base gradient in the formation of stomata, as well as in the deposition of fluorescing compounds was observed in young developing leaves. The deposition of blue-fluorescing phenolic compounds seems to be coordinated with stomatal development. (c) 2007 Elsevier GmbH. All rights reserved.
机译：尽管气孔个体发育与表皮组织的发育和成熟密切相关，但与叶片发育过程中表皮结构和表皮物质沉积有关的气孔模式尚未引起足够的重视。我们观察到蓝色荧光的表皮酚类物质在保护细胞和表皮细胞上的沉积，以及气孔的形成和构图，其中使用了碱诱导的樱桃李叶的表皮的蓝色荧光。在叶片发育过程中，不同成熟阶段的气孔一起出现，主要在叶片的顶端。荧光化合物的沉积最初出现在发育中的气孔复合体的保卫细胞上，并逐渐扩展到邻近的表皮细胞。基于表皮层发出的蓝色荧光，我们构建了不同发育阶段叶片的数字地图，显示了气孔形成和发荧光化合物沉积的模式。在年轻的发育叶片中观察到了气孔形成以及荧光化合物沉积过程中的纵向尖端至基部梯度。发出蓝色荧光的酚类化合物的沉积似乎与气孔发育有关。 （c）2007 Elsevier GmbH。版权所有。

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