Brown and green algae

To differentiate between brown and green algae, we assume that brown algae contain a sizable fraction of carotenoid protein and green algae do not. Thus, the relative abundance of brown algae (C ) is... 

Sternberg LdSL, DeNiro MJ, Ajie HO (1986) Isotopic relatiortships between saporriliable hpids and cellulose nitrate prepared from red, brown and green algae. Planta 169 320-324 Sternberg LdSL (1988) D/H ratios of environmental water recorded by D/H ratios of plant lipids. Nature 333 59-61... 

D-mannitol is widely distributed in plant families from photosynthetic bacteria to fungi, brown and green algae, mono- and dicotyledons, as well as animals [42-45]. It is the most abundant hexitol and concentrations of more than 1% dry weight are commonly found often much higher. In seaweeds it accumulates in the summer, whereas in many cases in higher plants the levels are higher in winter. It serves as a reserve carbohydrate,... 

Among the eukaryotic algae, surface phosphatase activity has been reported widely in red, brown and green algae (Whitton, 1991 Hernandez et al., 2003), diatoms (Myklestad and Sakshaug, 1983 Strojsovfi et al., 2003), dinoflagellates (Rivkin and Swift, 1980 Dyhrman and Palenik, 2001 Strojsovfi et al,... 

Antiviral and Immunostimulant Sul ted Polysaccharides of Red, Brown, and Green Algae ... 

The tropical regions represent the oldest marine habitats, where red and green algae dominate, while brown algae are more abundant toward cold temperate regions. The diversity of marine fauna reaches a maximum in tropical seas, and many hypotheses have been proposed to explain this (Krebs 2001 Willig et al. 2003 ... 

Zinova AD (1967) Guide of the green, brown and red algae of the southern seas of USSR. Nauka, Leningrad... 

Membrane mucilage has been observed in Barosma, Ulmus, Althaa, Linum, Astragalus, and Acacia species, in the Blue-green Algae, and many of the Brown and Red Algae. 

The difference term is needed because chlorophyll a is excited at 450 nm in both color groups—brown and green however, 530 nm excites chlorophyll a in only the brown algae. The factor 0.7 accounts for the contribution of absorption of 450 nm by brown algae in the mixture. 

D-Xylanases have been reported to be produced by several strains of bacteria from marine environments,140,141 such as sea water and marine-bottom sediments, and by green, brown, and red algae (seaweeds). The enzymes have also been isolated from terrestrial fungi, for example, Aspergillus batatae,142 Chaetomium globosum,142 and Irpex lacteus.143 These bacteria and fungi were found to produce both (1 -> 3)- and (1 - 4)-/3-D-xylanases, which were secreted extracellularly. 

Even more complicated is the situation in the utilization of non-visible parts of the sun s radiation. Some plants, algae and cyanobacteria have a certain photosynthetic activity also in the upper part of the UV region, for green plants the maximum is at about 360 nm, for brown and red algae it is around 340 nm. Infrared radiation cannot be utilized by green organisms, but some brown and red algae are able to utilize the shortwave part of infrared spectrum quite well. The purple phototrophic bacteria also possess a similar ability [9, 10]. 

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