Morphogenesis, developmental anatomy and bryophyte phylogenetics: contraindications of monophyly
Morphogenesis, developmental anatomy and bryophyte phylogenetics: contraindications of monophyly
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形态发生、发育解剖学和苔藓植物系统发育学：单系的禁忌症
DOI：
10.1179/jbr.1986.14.1.1
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发表时间：
1986
影响因子：
1.9
通讯作者：
B. Crandall
中科院分区：
文献类型：
--
作者：
B. Crandall
摘要本文通过三个实例证明了不同的个体发育模式可以产生相似的形态。在案例I中，它表明，在叶插入和分支个体发育之间的frullanioid和lejeuneoid线的差异与独特的序列分裂的顶端衍生物。案例二表明，发展到二列涉及不同的机制，苔藓和地钱。Takakia是唯一不同于所有其他现存的bragrites，并拥有一个广义的分生组织，而不是顶端细胞系统，被证明在情况III。Takakia和某些原始的导管植物之间的发育相似性被注意到，并建立了Takakiophyta部门，这个真正的无性生殖分离颈卵器。志留纪/泥盆纪陆生植物区系的古植物学数据与地钱、金鱼藻、苔藓、高崎植物和维管植物之间存在的形态发生分歧的耦合被认为支持多系起源。
Abstract Three case studies are presented to prove that different ontogenetic patterns can produce similar morphologies. In Case I, it is shown that differences in leaf insertion and branch ontogeny between frullanioid and lejeuneoid lines are correlated with distinctive sequences of division in the apical derivatives. Case II demonstrates that the progression to distichy involves different mechanisms in mosses and liverworts. That Takakia is uniquely different from all other extant bryophytes and possesses a generalized meristem, rather than an apical cell system, is proven in Case III. Developmental similarities between Takakia and certain primitive tracheophytes are noted, and the division Takakiophyta is established for this truly phylogenetically isolated archegoniate. A coupling of palaeobotanical data about Silurian/Devonian terrestrial floras with the morphogenetic divergences that exist between liverworts, hornworts, mosses, takakiophytes and tracheophytes are seen to support a polyphyletic origi...