Filament formation and differentiation in seven species of red algae
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Ming Yan Yin
Abstract
Filaments were induced from cut edges of segments of Gloiosiphonia capillaris, Gloiopeltis furcata, Chondrus ocellatus, Solieria tenuis, Ceramium kondoi, Chondria tenuissima, Laurencia okamurai and from the intact surfaces of Ceramium kondoi and Chondria tenuissima under unialgal culture conditions. The filaments of Gloiosiphonia capillaris can grow vegetatively under free-living conditions, while filaments of Gloiopeltis furcata tended to differentiate after excision from explants and grew autotrophically to the 10- to 20-cell stage. Filaments of other species usually survived attached to generating explants. Two distinct modes of filament regeneration were discerned among the species. In Gloiosiphonia capillaris, Gloiopeltis furcata, Chondrus ocellatus and Solieria tenuis, filaments initially developed into crust or crust-like compact tissue in suspension culture; upright thalli developed from the crusts. In Ceramium kondoi, Chondria tenuissima and Laurencia okamurai, thalli were generated from pseudoparenchyma that was developed from filaments, while creeping parts (rhizoids) formed a prostrate system.
©2007 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Spatial and temporal changes in non-structural carbohydrate reserves in eelgrass (Zostera marina L.) in Danish coastal waters
- Diversity, abundance and distribution of macroalgae at Sirinart Marine National Park, Phuket Province, Thailand
- Vertical distribution of spores of blade-forming Sarcothalia crispata (Gigartinaceae) and crustose corallines (Corallinaceae) in the water column
- Nitrate reductase in the marine macroalga Kappaphycus alvarezii (Rhodophyta): oscillation due to the protein level
- Filament formation and differentiation in seven species of red algae
- New records of benthic marine algae from the Canary Islands (eastern Atlantic Ocean): morphology, taxonomy and distribution
- Notes on the marine algae of the Bermudas. 8. Further additions to the flora, including Griffithsia aestivana sp. nov. (Ceramiaceae, Rhodophyta) and an update on the alien Cystoseira compressa (Sargassaceae, Heterokontophyta)
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