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首页> 外文期刊>Flora >A phylloid ground state of reverted floral specimens of Psophocarpus tetragonolobus (L.) DC (Fabaceae): Cancelled floral meristem and continued floral organ identity
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A phylloid ground state of reverted floral specimens of Psophocarpus tetragonolobus (L.) DC (Fabaceae): Cancelled floral meristem and continued floral organ identity

机译：三角果（L.）DC（豆科）的恢复花标本的系统发育基态：取消了花分生组织，并继续保持花器官身份

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Recombinants of Psophocarpus tetragonolobus (L.) DC (Fabaceae), homozygous for a recessive allele of a master homeotic gene reverted from a normal photosynthetic, sexual reproductive nature to a vegetative, non-reproductive nature. This included transmutative transformation of floral meristems to a non-sexual phylloid floral ground state where the virescent organs maintained their identity but floral meristem identity was cancelled thus giving rise to a form of anachronic reversion. This was usually followed by a scenario of phyllotactic alterations involving the elongation of the floral axis which physically transformed flowers, in varying degrees of spatial permutations by the formation of ancestral floral structures, including gynophore and a pericladial stalk: a form of paleochronic reversion. Research verified that an allele of the master homeotic gene responsible for this phenomenon is a prerequisite to that scenario. Specific permutations are directly controlled by at least four additional homeotic genes recognized, defined and functionally characterized herein. Their qualitative functions (i.e. dominant or recessive) are responsible respectively for the carpel form, being either vascularized (VSCARP) or digonolobe (vscarp); the state of the gynophore being formed (GNF) or nascent (gnf) the state of the pericladial stalk being formed (PCL) or nascent (pcl) and the bracts position remaining parallel (BCT:PRL) at the calyx (or on the pericladial stalk) or being dislocated due to an interbractial stem formation between bracts (bct:prl). Results indicate that floral meristem identity once established can naturally be cancelled with little or no effect on floral organ identity. (c) 2007 Elsevier GmbH. All rights reserved.
机译：Phophocarpus tetragonolobus（L.）DC（Fabaceae）的重组体，其是同种异型同源等位基因的隐性等位基因，从正常的光合作用，有性生殖性质恢复为无营养，无生殖性质。这包括将花分生组织转化为非性状的类胚花基态，在该状态下，绿色器官保持其身份，但花分生组织身份被取消，从而导致了一种过时的逆转。通常情况下是发生花序变化的场景，包括花轴的延长，花轴的变化通过祖先的花序结构（包括绞股蓝和周生茎）的形成以不同程度的空间排列而物理转化了花，这是古时变回的一种形式。研究证实，导致这种现象的主要同源基因的等位基因是该情况的先决条件。特定排列直接受至少四个本文认识，定义和功能表征的其他同源基因的控制。它们的定性功能（即显性的或隐性的）分别负责心皮形式，是血管化的（VSCARP）或地龙皮的（vscarp）;雌蕊形成的状态（GNF）或新生的（gnf）韧带形成的状态（PCL）或新生的（pcl），br片在花萼（或在周骨上）的位置保持平行（BCT：PRL）茎）或由于between片之间的br间茎形成而脱位（bct：prl）。结果表明，一旦建立了花分生组织身份，自然就可以取消，而对花器官的身份几乎没有影响。 （c）2007 Elsevier GmbH。版权所有。

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