杜鹃属(Gigartinales, Rhodophyta)和顶合属(Acrosymphytales, Rhodophyta)受精后的新认识

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Phycologia Pub Date : 2023-07-04 DOI:10.1080/00318884.2023.2220465
C. Rodríguez-Prieto, Jordi Morcillo
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引用次数: 0

摘要

摘要Dudresnaya属(Dumontiaceae,Gigartinales)和Acrosymphyton属(Acrosymhytaceae,Acrosympytales)是花藻属(Rhodophyta),传统上被描述为表现出典型的非原体行为。它们对应的一代D.verticillata和A.purpuriferum的受精后阶段已经在许多场合被描述过。尽管如此,最近的一些观察结果使本研究的作者更深入地研究了普通型中腕原细胞和辅助融合细胞的发展。主要结果包括a)描述了通过二次连接(通过在D.verticillata中的融合和通过a.purpuriferum中的连接细胞)进行的腕缘融合细胞发育;b) 在二倍体化之前,评估两个物种中初级辅助融合细胞的存在,以及对其发育和辅助融合细胞发育的描述;和c)观察到这两个物种中偶尔的原丝行为,原丝母细胞由轮状D.verticillata的次级连接丝首字母和A.purpuriferum的车皮原丝融合复合体发育而来。这项研究增加了对受精后过程的理解,并支持了原体行为其次来源于非原体祖先的假设。
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New insights into post-fertilization in Dudresnaya (Gigartinales, Rhodophyta) and Acrosymphyton (Acrosymphytales, Rhodophyta)
ABSTRACT Dudresnaya (Dumontiaceae, Gigartinales) and Acrosymphyton (Acrosymphytaceae, Acrosymphytales) are florideophycean genera (Rhodophyta) traditionally described as presenting a typical non-procarpic behaviour. The post-fertilization stages of their corresponding generitypes, D. verticillata and A. purpuriferum, have been described on many occasions. Nevertheless, some recent observations led the authors of this study to look more deeply into the development of the carpogonial and auxiliary fusion cells in the generitypes. Main results include a) description of the carpogonial fusion cell development by secondary connection (via fusion in D. verticillata and via conjunctor cells in A. purpuriferum); b) assessment of the existence, prior to diploidization, of primary auxiliary fusion cells in both species, and the description of their development and also that of the auxiliary fusion cells; and c) observation of occasional procarpic behaviour in both species, with gonimoblast developing from the secondary connecting filament initials in D. verticillata and from the carpogonial fusion complex in A. purpuriferum. The study has increased the understanding of the post-fertilization processes and supports the hypothesis that the procarpic behaviour is secondarily derived from non-procarpic ancestors.
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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