图尔基耶硅藻属植物种子表面扫描电镜图像的曲率分析

Taxonomy Pub Date : 2024-07-18 DOI:10.3390/taxonomy4030024
J. Martín-Gómez, José Luis Rodríguez-Lorenzo, Á. Tocino, M. Y. Dadandı, Kemal Yildiz, E. Cervantes
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引用次数: 0

摘要

最近,基于光学显微镜图像,对 100 种 Silene 种子表面的小瘤结构进行了定量描述,包括小瘤宽度、高度以及与一般形态计量数据相关的曲率。曲率测量曲线中切线矢量的变化率,可通过以下描述拟南芥根的方法计算。在此,我们将曲率测量方法应用于图尔基耶 40 种 Silene 树种的扫描电子显微镜图像,证明可以根据扫描电子显微镜图像对小瘤进行定量分析,其结果与光学照片相似。通过形态计量的小瘤数据,可将小瘤分为六组,其中五组与描述的形状相对应:皱纹状(两组)、回纹状、乳突状和乳头状,第六组为顶部平面的小瘤。曲率值介于 20 到 200 mm-1 之间,不同形态的小瘤之间也存在差异。研究了曲率值与其他一般测量值和种子形态特征的相关性。小瘤的量化不仅是 Silene 分类的有用工具,还为分析遗传控制和发育对种子表面小瘤结构和形状的影响提供了基础。
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Curvature Analysis in Seed Surface of SEM Images of Silene Species from Türkiye
Recently, based on light microscopy images, the tubercle structure on the seed surface of 100 Silene species was quantitatively described, including tubercle width, height, and curvature associated with general morphometric data. Curvature measures the rate of change of the tangent vector in a curve and can be calculated by the following methods described for Arabidopsis roots. Here, we apply curvature measurements to the SEM images of 40 Silene species from Türkiye, demonstrating that a quantitative analysis of tubercles can be made based on SEM images with similar results to optical photographs. The association of morphometric tubercle data allows for classification into six groups, five of them corresponding to described shapes: rugose (two groups), echinate, mammillate, and papillose, and a sixth group of tubercles plane on top. The curvature values vary between 20 and 200 mm−1 and differ among the morphological tubercle types described. The correlation of curvature values with other general measurements and morphological seed characteristics is investigated. Tubercle quantification not only is a useful tool for Silene taxonomy, but also provides the basis for the analysis of the genetic control and developmental effects on tubercle structure and shape in the seed surface.
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