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首页> 外文期刊>Developmental dynamics: an official publication of the American Association of Anatomists >Morphometric and allometric rules of polyp's landscape in regular and chimeric coral colonies of the branching species Stylophora pistillata
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Morphometric and allometric rules of polyp's landscape in regular and chimeric coral colonies of the branching species Stylophora pistillata

机译：塔比亚群常规和嵌合珊瑚菌落的策略景观形态学和各种规则

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Background: Most studies on architectural rules in corals have focused on the branch and the colony level, unveiling a variety of allometric rules. Working on the branching coral Stylophora pistillata, here we further extend the astogenic directives of this species at the polyp level, to reveal allometric and morphometric rules dictating polyps' arrangement.Results: We identified a basic morphometric landscape as a six-polyp circlet developed around a founder polyp, with established distances between polyps (six equilateral triangles), reflecting a strong genetic-based background vs high plasticity on the population level. Testing these rules in regular and chimeric S. pistillata colonies, we revealed similar morphometric/allometric rules developed via a single astogenic pathway. In regular colonies, this pathway was driven by the presence/absence of intra-circlet budding polyps, while in chimeras, by the distances between the two founder polyps. In addition, we identified the intra-circlet budding as the origin of first branching, if BPC distances are kept <1.09 ± 0.25 mm.Conclusions: The emerged allometric/morphometric rules indicate the existence of a positional information paradigm for polyps' landscape distribution, where each polyp creates its own positional field of morphogen gradients through six inductive sites, thus forming six positional fields for the development of the archetypal "six-polyp crown".
机译：背景：大多数关于珊瑚建筑规则的研究都集中在分支和群体水平上，揭示了各种异速生长规则。在分支珊瑚Stylophora pistilata的研究中，我们进一步扩展了该物种在珊瑚虫水平上的惊人指示，以揭示决定珊瑚虫排列的异速生长和形态测量规则。结果：我们确定了一个基本的形态测量景观，即围绕创始人息肉形成的六个息肉环，息肉之间的距离已确定（六个等边三角形），反映了强大的遗传背景和群体水平上的高度可塑性。在常规和嵌合的豌豆链球菌菌落中测试这些规则，我们发现了通过单一astogenic途径开发的类似的形态/异速生长规则。在正常群体中，这种通路是由有无环内出芽息肉驱动的，而在嵌合体中，则是由两个创始息肉之间的距离驱动的。此外，如果BPC距离保持在<1.09±0.25 mm，我们确定小环内萌芽是第一次分支的起源。结论：出现的异速生长/形态测量规则表明，息肉的景观分布存在一个位置信息范式，每个息肉通过六个诱导位点创建自己的形态梯度位置场，从而形成六个位置场，用于原型“六息肉冠”的发展。

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