Additional carotenoid prototype representatives and a general chemosystematic evaluation of carotenoids in prasinophyceae (chlorophyta)

Egeland, Einar Skarstad; Guillard, Robert R. L.; Liaaen‐Jensen, Synnøve

doi:10.1016/s0031-9422(96)00650-4

Cited by 66 publications

(68 citation statements)

References 25 publications

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“…Both Ostreococcus strains showed a set of carotenoids characteristic for the order Mamiellales (Egeland et al 1997;Latasa et al 2004;Rodríguez et al 2005) which changed with growth irradiance (Fig. 3).…”

Section: Resultsmentioning

confidence: 99%

Contrasting photoacclimation costs in ecotypes of the marine eukaryotic picoplankter Ostreococcus

Six

Finkel

Rodrı́guez

et al. 2008

Limnology & Oceanography

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Ostreococcus, the smallest known marine picoeukaryote, includes low-and high-light ecotypes. To determine the basis for niche partitioning between Ostreococcus sp. RCC809, isolated from the bottom of the tropical Atlantic euphotic zone, and the lagoon strain Ostreococcus tauri, we studied their photophysiologies under growth irradiances from 15 mmol photons m 22 s 21 to 800 mmol photons m 22 s 21 with a common nutrient replete regime. With increasing growth irradiance, both strains down-regulated cellular chlorophyll a and chlorophyll b (Chl a and Chl b) content, increased xanthophyll de-epoxidation correlated with nonphotochemical excitation quenching, and accumulated lutein. Ribulose-1,5-bisphosphate carboxylase/oxygenase content remained fairly stable. Under low-growth irradiances of 15-80 mmol photons m 22 s 21 , O. sp. RCC809 had equivalent or slightly higher growth rates, lower Chl a, a higher Chl b : Chl a ratio, and a larger photosystem II (PSII) antenna than O. tauri. O. tauri was more phenotypically plastic in response to growth irradiance, with a larger dynamic range in growth rate, Chl a, photosystem cell content, and cellular absorption cross-section of PSII. Estimating the amino acid and nitrogen costs for photoacclimation showed that the deep-sea oceanic O. sp. RCC809 relies largely on lower nitrogen cost changes in PSII antenna size to achieve a limited range of s-type light acclimation. O. sp. RCC809, however, suffers photoinhibition under higher light. This limited capacity for photoacclimation is compatible with the stable low-light and nutrient conditions at the base of the euphotic layer of the tropical Atlantic Ocean. In the more variable, high-nutrient, lagoon environment, O. tauri can afford to use a higher cost n-type acclimation of photosystem contents to exploit a wider range of light.

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Section: Resultsmentioning

confidence: 99%

Contrasting photoacclimation costs in ecotypes of the marine eukaryotic picoplankter Ostreococcus

Six

Finkel

Rodrı́guez

et al. 2008

Limnology & Oceanography

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“…Gugus keto pada atom C-8 fukoxantin (Englert et al, 1990), siphonaxantin (Egeland et al, 1997;Yoshii et al, 2002) dan prasinoxantin (Egeland dan Liaaen-Jensen, 1995) hanya ditemukan pada algae. Berdasarkan hasil analisis femtosecond time-resolved fluorescence spectroscopy karotenoid murni dalam pelarut organik dan LHC pada pelarut, kelompok keto-karotenoid dan peridinin mempunyai kemampuan yang efisien dalam transfer energi dari tahap S 1 (bukan tahap S 2 ) karotenoid ke klorofil.…”

Section: Fungsi Karotenoidunclassified

Karotenoid Pada Algae: Kajian Tentang Biosintesis, Distribusi Serta Fungsi Karotenoid

Merdekawati

Karwur

Susanto

2017

BIOMA

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ABSTRAKKarotenoid terdistribusi pada archaea, bakteri, jamur, tumbuhan, hewan serta algae. Karotenoid dihasilkan dari komponen isopentenyl pyrophosphate (IPP) yang mengalami proses secara bertahap untuk membentuk beragam jenis karotenoid. Terdapat dua kelompok karotenoid yaitu karoten dan xantofil dengan berbagai jenis turunannya. Struktur kimia pada karotenoid algae yaitu allene, acetylene serta acetylated carotenoids. Algae mempunyai karotenoid spesifik yang menarik untuk dipelajari. Setiap kelas algae mempunyai komposisi karotenoid yang berbeda. Untuk memahami tentang karotenoid algae perlu diketahui jalur biosintesisnya serta enzim yang berperan di dalamnya. Karotenoid terdistribusi pada membran tilakoid sesuai dengan fungsinya dalam fotosintesis.Kata kunci: algae, karotenoid, biosintesis, fukoxantin, LHC, fotosintesis. PENDAHULUANKarotenoid merupakan pigmen yang berwarna kuning hingga merah. Secara struktural, karotenoid merupakan senyawa poliena isoprenoid yang terbentuk dari 8 unit isoprena C 5 . Terdapat lebih dari 750 jenis karotenoid yang dapat ditemukan di alam. Karotenoid terdistribusi pada tumbuhan darat, algae, bakteri, archaea, jamur serta hewan dengan komposisi yang berbeda pada setiap organisme tersebut. Pemahaman mengenai komposisi karotenoid algae akan lebih mendalam apabila jalur biosintesis karotenoid juga diketahui. Review berikut akan membahas mengenai karotenoid algae mencakup jalur biosintesis, distribusi, serta fungsinya dalam fotosintesis. Pembahasan mengenai biosintesis karotenoid difokuskan pada fukoxantin yang merupakan karotenoid utama pada rumput laut coklat. Biosintesis fukoxantin yang dibahas dalam review ini berupa hipotesis karena masih terdapat beberapa bagian yang belum terpecahkan. Pada akhir review akan dibahas mengenai fungsi karotenoid dalam fotosintesis.

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“…Chlorophyll-b and prasinoxanthin are contained in some species of prasinophytes that belong to the Type 3 pigment group (Egeland et al 1997;Jeffrey and Wright 2006). No laboratory culture experiment suggests the production of CH 2 I 2 or CH 2 ClI by prasinophytes to date.…”

Section: (4) Phytoplankton Pigments and Methyl Halide Concentrationsmentioning

confidence: 99%

A Study on the Production and Emission of Marine-Derived Volatile Halocarbons

Yokouchi¹,

Ooki²,

Hashimoto³

2014

Western Pacific Air-Sea Interaction Study

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Additional carotenoid prototype representatives and a general chemosystematic evaluation of carotenoids in prasinophyceae (chlorophyta)

Cited by 66 publications

References 25 publications

Contrasting photoacclimation costs in ecotypes of the marine eukaryotic picoplankter Ostreococcus

Contrasting photoacclimation costs in ecotypes of the marine eukaryotic picoplankter Ostreococcus

Karotenoid Pada Algae: Kajian Tentang Biosintesis, Distribusi Serta Fungsi Karotenoid

A Study on the Production and Emission of Marine-Derived Volatile Halocarbons

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