Floral development of <i>Ceratophyllum demersum</i> with special reference to effect of mechanical force on meristic variation

DOI Web Site Web Site 1 Citations 26 References Open Access

Bibliographic Information

Other Title
  • マツモ（<i>Ceratophyllunm demersum</i>）の花発生：物理的圧力が花の数性に及ぼす影響
  • マツモ(Ceratophyllunm demersum)の花発生 : 物理的圧力が花の数性に及ぼす影響
  • マツモ(Ceratophyllunm demersum)ノ ハナ ハッセイ : ブツリテキ アツリョク ガ ハナ ノ スウセイ ニ オヨボス エイキョウ

Search this article

Abstract

<p>Male flowers of Ceratophyllum demersum show a variable phyllotactic arrangement (merosity); spiral, trimerous, tetramerous and chaotic. We have demonstrated that, in a young primordium of male flower, both tepals and stamens show unidirectional initiation, first initiating on the abaxial side of the floral apex and only later on the adaxial side. In a flower at later developmental stage, inner stamens always show a spiral pattern. Our study indicated that the unidirectional initiation in early development is probably due to the pressure imposed by the leaf primordium at a higher node, and the spiral arrangement should be the original pattern in the stamen initiation. This result indicates similarities of the floral development in Ceratophyllum, at least in male flowers, with those of basal angiosperms except Nymphaeales. We conclude that mechanical forces on the adaxial side of the flower meristem are an important factor explaining the meristic variation not only in flowers of this species but also in flowers of all angiosperms. To examine this hypothesis, we have developed an experimental system using a micromanipulator with silicon device to produce an artificial mechanical force on the abaxial side of the young floral apex of Arabidopsis thaliana and to induce the development of flowers other than tetramerous ones. We have obtained some distorted flowers probably due to the mechanical force imposed by this device.</p>

Journal

  • PLANT MORPHOLOGY

    PLANT MORPHOLOGY 29 (1), 75-80, 2017

    The Japanese Society of Plant Morphology

Citations (1)*help

See more

References(26)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top