Phycocyanin is a phycobiliprotein involved in light harvesting and conduction of light to the reaction centers in cyanobacteria and red algae. The structure of C-phycocyanin from Gracilaria chilensis was solved by X-ray crystallography at 2.0 A resolution in space group P2(1). An interaction model between two PC heterohexamers was built, followed by molecular dynamic refinement. The best model ...

While invasive species often threaten biodiversity and human well-being, their potential to enhance functioning by offsetting the loss of native habitat has rarely been considered. We manipulated the abundance of the nonnative, habitat-forming seaweed Gracilaria vermiculophylla in large plots (25 m2) on southeastern US intertidal landscapes to assess impacts on multiple ecosystem functions unde...

The responses of respiration and photosynthesis to temperature fluctuations in marine macroalgae have the potential to significantly affect coastal carbon fluxes and sequestration. In this study, the marine red macroalga Gracilaria lemaneiformis was cultured at three different temperatures (12, 19, and 26°C) and at high- and low-nitrogen (N) availability, to investigate the acclimation potentia...

All three macroalgal clades (Chlorophyta, Rhodophyta, and Phaeophyceae) contain bloom-forming species. Macroalgal blooms occur worldwide and have negative consequences for coastal habitats and economies. Narragansett Bay (NB), Rhode Island, USA, is a medium sized estuary that is heavily influenced by anthropogenic activities and has been plagued by macroalgal blooms for over a century. Over the...

Gracilaria tenuistipitata var. liui Zhang et Xia, which is farmed in brackish water ponds of southern Taiwan as a major food of sea abalone, produces poor yields in winter. This study investigated the effects of year, location (pond), and season on the physiological responses of G. tenuistipitata to varying temperature. Neither year nor pond affected the physiological parameters. Season signifi...

CARLOS FREDERICO D. GURGEL*{, SUZANNE FREDERICQ, JAMES N. NORRIS AND YOCIE YONESHIGUE-VALENTIN Smithsonian Marine Station, Fort Pierce, Florida 34949, USA University of Louisiana at Lafayette, Department of Biology, Lafayette, Louisiana 70504-2451, USA Smithsonian Institution, National Museum of Natural History, Department of Botany, MRC166, PO Box 37012, Washington, DC 20013-7012, USA Universi...

Penelitian ini untuk mengetahui rata-rata biaya produksi, penerimaan, R/C dan Rentabilitas usahatani rumput laut (Gracilaria sp.) Kelompok Tani Pancer Pindang Jaya Desa Cangkring Kecamatan Cantigi Kabupaten Indramayu. Metode penelitian menggunakan survei, desain dengan survey deskriptif. Populasi seluruh petani berjumlah 14 orang. Sampel diambil metode sensus yaitu Hasil 1) Biaya Produksi sebes...