Ultrastructural study of the differentiated blade of Porphyra perforata (Rhodophyta)

Delivopoulos, Stylianos G.; Polne‐Fuller, Miriam; Diannelidis, B. E.

doi:10.1127/nova.hedwigia/68/1999/65

Cited by 8 publications

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“…There is no direct evidence of thylakoid formation from unraveling of concentric lamellar bodies (CLBs). However, suggestive images were found in Faucheocolax attenuata (Delivopoulos & Kugrens, 1984, 1985) and Porphyra perforata J. Agardh (Delivopoulos, Polne‐Fuller & Diannelidis, 1999). There is usually at least one peripheral thylakoid in red algal plastids (Pueschel, 1990).…”

Section: Discussionmentioning

confidence: 99%

Ultrastructure of post-fertilization development in the red alga Nienburgia andersoniana (Delesseriaceae, Ceramiales, Rhodophyta)

Delivopoulos

2003

Botanical Journal of the Linnean Society

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The ultrastructure of post‐fertilization development in Nienburgia andersoniana (J. Ag.) Kyl. is described. Above the auxiliary cell there is a group of four sterile cells. The presence of abundant storage products (starch granules, lipid bodies and protein crystals) in these cells indicates that the sterile cells function as nutrient suppliers to the young auxiliary and gonimoblast cells of the carposporophyte during its early steps of development. Following fertilization and transfer of the diploid nucleus to the auxiliary cell, the trichogyne disappears and large multinucleate gonimoblast initials are produced. These subsequently produce generative gonimoblast cells which cleave successively to form young carpospores. Those of the gonimoblast cells which will not differentiate into carpospores are transformed into cells producing mucilage. Both kinds of gonimoblast cells contain plastids, starch granules, cytoplasmic concentric membrane bodies and small vesicles. Dark‐staining spherical masses occurring in the cytoplasm of the auxiliary and gonimoblast cells may represent degenerating haploid nuclei. Septal plugs interconnecting the auxiliary cell and gonimoblast cells increase considerably in size during carposporophyte development. The fusion cell at the late stage of carposporophyte development appears degenerative. Young carpospores have plastids and mitochondria, and concentric membrane bodies that will form mucilage sacs. Medium‐aged carpospores have fully developed plastids, starch granules and fibrous vacuoles. Mature carpospores possess, in addition, cored vesicles. The inner pericarp cells contribute large amounts of mucilage to the cytostocarpic cavity and eventually are consumed. © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society, 2003, 142, 289–299.

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Section: Discussionmentioning

confidence: 99%

Ultrastructure of post-fertilization development in the red alga Nienburgia andersoniana (Delesseriaceae, Ceramiales, Rhodophyta)

Delivopoulos

2003

Botanical Journal of the Linnean Society

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Ultrastructure of tetrasporogenesis in the red alga Osmundea spectabilis var. spectabilis (Rhodomelaceae: Ceramiales: Rhodophyta)

Delivopoulos¹

2002

Marine Biology

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Ultrastructure of post-fertilization development in the red alga Callophyllis linearis (Kallymeniaceae, Cryptonemiales, Rhodophyta)

Delivopoulos

2004

Marine Biology

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Ultrastructural study of the differentiated blade of Porphyra perforata (Rhodophyta)

Cited by 8 publications

References 0 publications

Ultrastructure of post-fertilization development in the red alga Nienburgia andersoniana (Delesseriaceae, Ceramiales, Rhodophyta)

Ultrastructure of post-fertilization development in the red alga Nienburgia andersoniana (Delesseriaceae, Ceramiales, Rhodophyta)

Ultrastructure of tetrasporogenesis in the red alga Osmundea spectabilis var. spectabilis (Rhodomelaceae: Ceramiales: Rhodophyta)

Ultrastructure of post-fertilization development in the red alga Callophyllis linearis (Kallymeniaceae, Cryptonemiales, Rhodophyta)

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