The Sporophyte-Gametophyte Junction in Five Species of Pleurocarpous Mosses

Alfayate, Carmen; Estébanez, Belén; Ron, Eugenia

doi:10.1639/0007-2745(2000)103[0467:tsgjif]2.0.co;2

Cited by 7 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While many bryophyte placentas have multiple layers of transfer cells (Browning and Gunning 1979a;Alfayate et al 2000), wall ingrowths occur only in the outermost foot layer and adjacent gametophyte cells in leptosporangiate ferns (Gunning and Pate 1969a;Khatoon 1986;Duckett and Ligrone 2003). Absence of ingrowths in gametophyte cells not interdigitated with peripheral foot transfer cells corroborates prior studies (Duckett and Ligrone 2003) and implies that transfer cell differentiation may be related to placental interdigitation.…”

Section: Embryology Reflects the Mechanical Constraints Imposed By Thsupporting

confidence: 74%

“…A placental space containing crushed cells between generations observed in certain lycophytes and bryophytes (Alfayate et al 2000;Frey et al 2001;Hilger et al 2002) is absent in C. richardii. While many bryophyte placentas have multiple layers of transfer cells (Browning and Gunning 1979a;Alfayate et al 2000), wall ingrowths occur only in the outermost foot layer and adjacent gametophyte cells in leptosporangiate ferns (Gunning and Pate 1969a;Khatoon 1986;Duckett and Ligrone 2003).…”

Section: Embryology Reflects the Mechanical Constraints Imposed By Thmentioning

confidence: 99%

See 1 more Smart Citation

Embryology of Ceratopteris richardii (Pteridaceae, tribe Ceratopterideae), with emphasis on placental development

Johnson

Renzaglia

2008

J Plant Res

View full text Add to dashboard Cite

This comprehensive study of early embryology in Ceratopteris richardii combines light microscopy with the first ultrastructural evaluation of any pteridophyte embryo. Emphasis is placed on ontogeny of the foot and placental transfer cells. The embryology of C. richardii shares many similarities with that of other polypodiacious ferns while exhibiting distinctive division patterns. Formative embryonic stages have been reconstructed into three-dimensional models for ease of interpretation. The zygote divides perpendicular to the gametophyte plane and anterioposterior axis. This division establishes a prone embryological habit that maximizes rapid independent establishment of a leaf-root axis in a cordate gametophyte. After the formation of a globular eight-celled stage, initials of the first leaf, and root and shoot apical meristems are defined early by discrete formative divisions. Concomitantly, the foot expands and differentiates to transport nutrients from the gametophyte for the developing embryonic organs. Transfer cell wall ingrowth deposition begins in the gametophyte placental cells before the adjacent sporophyte cells just after the eight-celled stage. These observations provide an anatomical framework for future comparative developmental genetic studies of embryogenesis in free-sporing plants.

show abstract

Section: Embryology Reflects the Mechanical Constraints Imposed By Thsupporting

confidence: 74%

Section: Embryology Reflects the Mechanical Constraints Imposed By Thmentioning

confidence: 99%

Embryology of Ceratopteris richardii (Pteridaceae, tribe Ceratopterideae), with emphasis on placental development

Johnson

Renzaglia

2008

J Plant Res

View full text Add to dashboard Cite

show abstract

“…Similarly, while most moss sporophytes contain a special opening structure (the annulus) enabling controlled dehiscence and regulated release of spores, most liverwort and all hornwort sporophytes open along two or more preformed slits ( Crandall-Stotler and Stotler, 2008 ; Renzaglia et al., 2009 ). Additionally, while moss, liverwort and hornwort sporophytes are all nurtured by the gametophyte, nutrient transfer cells occur only in the gametophyte of hornworts while they are present in both the gametophyte and sporophyte tissues of several mosses and liverworts ( Alfayate et al., 2000 ; Buck and Goffinet, 2000 ; Carafa et al., 2003 ; Crandall-Stotler and Stotler, 2008 ; Villarreal and Renzaglia, 2015 ). Finally, unlike mosses and liverworts, hornworts lack both water- and nutrient-conducting cells ( Ligrone et al., 2000 ), with the evolutionary, physiological, and developmental aspects of this still not understood.…”

Section: The Unique Biology Of Hornwortsmentioning

confidence: 99%

What can hornworts teach us?

et al. 2023

View full text Add to dashboard Cite

The hornworts are a small group of land plants, consisting of only 11 families and approximately 220 species. Despite their small size as a group, their phylogenetic position and unique biology are of great importance. Hornworts, together with mosses and liverworts, form the monophyletic group of bryophytes that is sister to all other land plants (Tracheophytes). It is only recently that hornworts became amenable to experimental investigation with the establishment of Anthoceros agrestis as a model system. In this perspective, we summarize the recent advances in the development of A. agrestis as an experimental system and compare it with other plant model systems. We also discuss how A. agrestis can help to further research in comparative developmental studies across land plants and to solve key questions of plant biology associated with the colonization of the terrestrial environment. Finally, we explore the significance of A. agrestis in crop improvement and synthetic biology applications in general.

show abstract

Morphology versus molecules in moss phylogeny: new insights (or controversies) from placental and vascular anatomy in Oedipodium griffithianum

Ligrone

Duckett

2011

Plant Syst Evol

View full text Add to dashboard Cite

The Sporophyte-Gametophyte Junction in Five Species of Pleurocarpous Mosses

Cited by 7 publications

References 13 publications

Embryology of Ceratopteris richardii (Pteridaceae, tribe Ceratopterideae), with emphasis on placental development

Embryology of Ceratopteris richardii (Pteridaceae, tribe Ceratopterideae), with emphasis on placental development

What can hornworts teach us?

Morphology versus molecules in moss phylogeny: new insights (or controversies) from placental and vascular anatomy in Oedipodium griffithianum

Contact Info

Product

Resources

About