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Carpospore information


Cystocarp of Amphiplexia hymenocladioides

A carpospore is a diploid spore produced by red algae. After fertilization, the alga's carpogonium subdivides into carpospores, and generally the largest type of spore (larger than bispores, which are larger again than tetraspores).[1] The wall of the carposporangium then breaks down, releasing the spores into the environment.[2]

  1. ^ Steneck, R. S. (1986). "The Ecology of Coralline Algal Crusts: Convergent Patterns and Adaptative Strategies". Annual Review of Ecology and Systematics. 17: 273–303. doi:10.1146/annurev.es.17.110186.001421. JSTOR 2096997.
  2. ^ Hoek, Christiaan; D. G. Mann; Hans Martin Jahns (1995). Algae. Cambridge University Press. p. 63. ISBN 978-0-521-31687-3.

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Carpospore

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A carpospore is a diploid spore produced by red algae. After fertilization, the alga's carpogonium subdivides into carpospores, and generally the largest...

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Red algae

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organ), which then divides to form carposporangia – which produce carpospores. Carpospores germinate into gametophytes, which produce sporophytes. Both of...

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Chondrus crispus

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produce gametes which fuse to form a diploid carposporophyte, which forms carpospores, which develops into the sporophyte. The sporophyte then undergoes meiosis...

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Spore

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Light microscopy of Polysiphonia showing a carpospores and carposporophyte inside...

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Porphyra

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fertilized, now diploid, carposporangia after mitosis produce spores (carpospores) which settle, then bore into shells, germinate and form a filamentous...

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Polysiphonia

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surrounded by the haploid pericarp of the parent female plant. The diploid carpospores produced in the carposporangium when released are non-motile, they settle...

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Batrachospermum

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ranging from 2 to 22. Several species produce monospores, but usually carpospores are formed. Spermatangia (male gametangia) are spherical (4–8 μm in diameter)...

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Nemalion helminthoides

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on BalanusPatella. The life-history is not fully confirmed. However carpospores and tetrasporangia have been recorded. Generally distributed around the...

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Atractophora hypnoides

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produces spermatangia in clusters and carposporophytes which produce carpospores. On release these germinate and develop into the gametangial phase. No...

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Batrachospermaceae

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Batrachospermaceae generally have a "Lemanea-type" life history with carpospores germinating to produce chantransia. Sporophyte phase with meiosis occurs...

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Cystocarp

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special protective envelope (as in Polysiphonia). The structure from which carpospores are released. "meaning of cystocarp". Maggs, C.A. and Hommersand, M.H...

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Calliarthron

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reproduces by means of conceptacles; it produces tetraspores, dispores and carpospores. The genus has lignin and contains secondary cell walls, traits which...

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Autospore

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akinetes, heterocysts, endospores, exospores, androspores, neutral spores, carpospores, tetraspores, and palmella stage. Zoospores are flagellate and can move...

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Carpogonium

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which is the receptive organ for the male gametes. It gives birth to the carpospores. It may also have hairlike structures called trichogynes which receive...

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Hypnea

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diploid phases and a haploid phase. The diploid carposporophyte releases carpospores that develop into a diploid tetrasporophyte which undergoes meiosis to...

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Polysiphonia lanosa

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cystocarps are borne, usually singly. with a narrow ostiole from which carpospores are released. The tetraspores occur in spiral series resulting from a...

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Asparagopsis

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such as temperature, activate the release of mature carpospores from the cystocarp. Carpospores will settle and germinate to become tetrasporophytes...

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Laurencia

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phase. Two diploid phases occur in Laurencia: one with carpogonia and carpospore and the other, with tetrasporangia. Therefore, Laurencia undergoes three...

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Bangia

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oogamous. Carposporangia are formed through direct division of the zygote. Carpospores germinate to form the diploid filamentous conchocelis phase, which produces...

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Plocamium

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found on special short fertile branches, and lack a specialized pore for carpospore release. Tetrasporangia are borne in specialized stichidia (branches of...

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Mastocarpus stellatus

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because fertilization never occurred. This results in the production of carpospores by the female gametophytes, resulting in the growth of foliose plants...

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Crustaphytum

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gametes. Afterwards, carposporophytes grow on the female gametophytes. Carpospores are produced and released when mature, developing into tetrasporophytes...

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Arthrothamnus

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reproduces by means of conceptacles; it produces tetraspores and dispores and carpospores. The two species currently recognised are Arthrothamnus bifidus and Arthrothamnus...

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Gonimoblast

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fertilization of a zygotic nucleus, and involved in the formation of carpospores. The cells subsequently divide and ultimately serve as storage or generative...

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Rhodochorton

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organ), which then divides to form carposporangia - which produce carpospores. Carpospores germinate into gametophytes, which produce sporophytes. Both of...

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Ahnfeltia plicata

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millimetres (0.20 in) long. After fertilization of the carpogonium, carpospores are formed on the female frond. These produce a second diploid generation...

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