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Carrageenans in the gametophytic and sporophytic stages of Chondrus crispus.
Planta. 1973 Sep; 112(3):201-12.P

Abstract

The morphologically similar sporophytic and gametophytic plants of Chondrus crispus Stackhouse were examined and it was shown that the former contain λ-carrageenan. The gametophytes contain ϰ- and two additional carrageenans which are KCl-soluble and may comprise up to 25% of the total carrageenan. After alkaline modification, these KCl-soluble components were separated into a gel and a soluble carrageenan. The gel was indistinguishable from ϰ-carrageenan and presumably was derived from μ-carrageenan while the KCl-soluble fraction possessed a unique infrared spectrum easily distinguished from alkali-modified λ-carrageenan. This appears to represent a third carrageenan in the gametophytes.Our observations suggest that the biologically separate plants of C. crispus exhibit distinctive patterns of sulfation of their galactans. The sporophytes add SO4 (2-) at C2 of the precursor, whereas the gametophytes appear to add it principally at the available C4 positions. Both types of plant are capable of sulfating at C6 of the 4-linked galactose unit.

Authors+Show Affiliations

Department of Biology, McMaster University, Hamilton, Ontario, Canada.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24468729

Citation

McCandless, E L., et al. "Carrageenans in the Gametophytic and Sporophytic Stages of Chondrus Crispus." Planta, vol. 112, no. 3, 1973, pp. 201-12.
McCandless EL, Craigie JS, Walter JA. Carrageenans in the gametophytic and sporophytic stages of Chondrus crispus. Planta. 1973;112(3):201-12.
McCandless, E. L., Craigie, J. S., & Walter, J. A. (1973). Carrageenans in the gametophytic and sporophytic stages of Chondrus crispus. Planta, 112(3), 201-12. https://doi.org/10.1007/BF00385324
McCandless EL, Craigie JS, Walter JA. Carrageenans in the Gametophytic and Sporophytic Stages of Chondrus Crispus. Planta. 1973;112(3):201-12. PubMed PMID: 24468729.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carrageenans in the gametophytic and sporophytic stages of Chondrus crispus. AU - McCandless,E L, AU - Craigie,J S, AU - Walter,J A, PY - 1973/01/23/received PY - 2014/1/29/entrez PY - 1973/9/1/pubmed PY - 1973/9/1/medline SP - 201 EP - 12 JF - Planta JO - Planta VL - 112 IS - 3 N2 - The morphologically similar sporophytic and gametophytic plants of Chondrus crispus Stackhouse were examined and it was shown that the former contain λ-carrageenan. The gametophytes contain ϰ- and two additional carrageenans which are KCl-soluble and may comprise up to 25% of the total carrageenan. After alkaline modification, these KCl-soluble components were separated into a gel and a soluble carrageenan. The gel was indistinguishable from ϰ-carrageenan and presumably was derived from μ-carrageenan while the KCl-soluble fraction possessed a unique infrared spectrum easily distinguished from alkali-modified λ-carrageenan. This appears to represent a third carrageenan in the gametophytes.Our observations suggest that the biologically separate plants of C. crispus exhibit distinctive patterns of sulfation of their galactans. The sporophytes add SO4 (2-) at C2 of the precursor, whereas the gametophytes appear to add it principally at the available C4 positions. Both types of plant are capable of sulfating at C6 of the 4-linked galactose unit. SN - 0032-0935 UR - https://www.unboundmedicine.com/medline/citation/24468729/Carrageenans_in_the_gametophytic_and_sporophytic_stages_of_Chondrus_crispus_ L2 - https://antibodies.cancer.gov/detail/CPTC-GST+Mu1-6 DB - PRIME DP - Unbound Medicine ER -
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