Description of a new species of soil algae, Parietochloris grandis sp. nov., and study of its fatty acid profiles under different culturing conditions

Japewia aliphatica is described as a new species. It is characterized by the usually brown, often areolate, blastidiate to sorediate-blastidiate, rarely fertile thallus containing unknown fatty acid(s). It grows on acidic bark of broad-leaved trees in mainly in montane forests, and is known from Austria, the Czech Republic, Germany, Norway, Russia (European part of the Caucasus), Slovakia and Ukraine. The new species is well characterized by its morphological, chemical and molecular (nrITS, mtSSU) traits. Systematic placement of Japewia is briefly discussed and its position within Lecanoraceae confirmed.

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Characteristics of Psychrotrophic Clostridium laramie Causing Spoilage of Vacuum-packaged Refrigerated Fresh and Roasted Beef

Journal of Food Protection ◽

10.4315/0362-028x-56.1.13 ◽

1993 ◽

Vol 56 (1) ◽

pp. 13-17 ◽

Cited By ~ 59

Author(s):

N. KALCHAYANAND ◽

B. RAY ◽

R. A. FIELD

Keyword(s):

New Species ◽

Fatty Acid ◽

Pure Culture ◽

Soluble Protein ◽

Volatile Fatty Acid ◽

Protein Profiles ◽

Biochemical Characteristics ◽

Clostridial Species ◽

A New Species ◽

Clostridium Spp

A Clostridium sp., associated with an unusual spoilage of vacuum-packaged refrigerated uncooked (fresh) and roasted beef, was isolated as a pure culture from the spores in spoiled beef. The pure culture was used to study important characteristics and to differentiate it from other clostridial species usually found in beef. The biochemical characteristics, volatile fatty acid and soluble-protein profiles, temperatures and pHs of growth, and temperatures of sporulation, germination, and destruction of the isolate were distinctly different from other Clostridium spp. studied. It is not toxigenic and has 26% guanine plus cytosine. The isolate is a new species and is named Clostridium laramie.

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Study of the Seasonal Variations of the Fatty Acid Profiles of Selected Macroalgae

Molecules ◽

10.3390/molecules26195807 ◽

2021 ◽

Vol 26 (19) ◽

pp. 5807

Author(s):

Tatiana Pereira ◽

André Horta ◽

Sónia Barroso ◽

Susana Mendes ◽

Maria M. Gil

Keyword(s):

Fatty Acid ◽

Seasonal Variations ◽

Saturated Fat ◽

Processed Foods ◽

Fatty Acid Profiles ◽

Bifurcaria Bifurcata ◽

High Consumption ◽

Saccorhiza Polyschides ◽

Fucus Spiralis ◽

Culturing Conditions

Due to the high consumption of fat-rich processed foods, efforts are being done to reduce their saturated fat (SFA) contents and replace it with polyunsaturated fatty acids (PUFA), creating a necessity to find alternative PUFA sources. Macroalgae, being a promising natural source of healthy food, may be such an alternative. The fatty acid (FA) profile of Fucus spiralis, Bifurcaria bifurcata, Ulva lactuca, and Saccorhiza polyschides were determined through direct transesterification and their seasonal variation was studied. F. spiralis showed the highest FA content overall, B. bifurcata presented the higher PUFA amounts, and U. lactuca and S. polyschides the higher SFA. The production of FA was shown to be influenced by the seasons. Spring and summer seemed to induce the FA production in F. spiralis and B. bifurcata while in U. lactuca the same was verified in winter. U. lactuca presented a ω6/ω3 ratio between 0.59 and 1.38 while B. bifurcata presented a ratio around 1.31. The study on the seasonal variations of the macroalgal FA profile can be helpful to understand the best season to yield FA of interest, such as ALA, EPA, and DHA. It may also provide valuable information on the best culturing conditions for the production of desired FAs.

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Corticolous sorediateLecanoraspecies (Lecanoraceae, Ascomycota) containing atranorin in Europe

The Lichenologist ◽

10.1017/s002428291700038x ◽

2017 ◽

Vol 49 (5) ◽

pp. 431-455 ◽

Cited By ~ 12

Author(s):

Jiří MALÍČEK ◽

Franz BERGER ◽

Zdeněk PALICE ◽

Jan VONDRÁK

Keyword(s):

Czech Republic ◽

New Species ◽

Fatty Acid ◽

Molecular Data ◽

Strict Sense ◽

Chemical Variation ◽

Beech Forests ◽

The Czech Republic ◽

Central European ◽

A New Species

AbstractSixteen sorediate epiphytic species ofLecanorawith atranorin from Europe are reported here.Lecanora substerilisis described as a new species from Carpathian beech forests in the Czech Republic, Slovakia, Romania and Ukraine; it belongs to theL.subfuscagroup in its strict sense and is characterized by its usually verrucose thallus, sorediate apothecial margin, epihymenium with coarse granules at paraphyses tips, amphithecium with large crystals and it produces atranorin and fatty acid(s). A new, yellow chemotype ofL. barkmanianacontaining pulvinic acid derivatives is recognized from Austria. Morphological, ecological and chemical variation inL. exspersa, L. farinariaandL.variolascensis discussed in detail, and brief comments on the remaining 11 species are provided. Evaluation of the type material and molecular data indicate that the predominantly saxicolousL. caesiosorais a sorediate form ofL. cenisia. Molecular data confirmed the identities of the sorediate forms ofL. albellaandL. allophanathat are conspecific with their fertile counterparts. New Central European localities are listed for the rare species,L. barkmaniana,L. exspersa,L. mughosphagneti,L. norvegicaandL. variolascens. Positions in ITS and mtSSU phylogenies are outlined for most species. Identification keys to fertile as well as sterile populations are provided.

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Isolation and identification of myxobacteria from soils and plant materials, with special reference to DNA base composition, quinone system, and cellular fatty acid composition, and with a description of a new species, Myxococcus flavescens.

The Journal of General and Applied Microbiology ◽

10.2323/jgam.33.247 ◽

1987 ◽

Vol 33 (3) ◽

pp. 247-265 ◽

Cited By ~ 15

Author(s):

SHIGERU YAMANAKA ◽

AKIHIKO KAWAGUCHI ◽

KAZUO KOMAGATA

Keyword(s):

Fatty Acid Composition ◽

New Species ◽

Fatty Acid ◽

Base Composition ◽

Cellular Fatty Acid ◽

Isolation And Identification ◽

Dna Base Composition ◽

Plant Materials ◽

Dna Base ◽

A New Species

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New Species of Chloroidium (Trebouxiophyceae, Chlorophyta) from East Asia

Plants ◽

10.3390/plants10122560 ◽

2021 ◽

Vol 10 (12) ◽

pp. 2560

Author(s):

Andrey A. Gontcharov ◽

Arthur Yu. Nikulin ◽

Vyacheslav Yu. Nikulin ◽

Veronika B. Bagmet ◽

Rezeda Z. Allaguvatova ◽

...

Keyword(s):

New Species ◽

Sequence Data ◽

Morphological Characteristics ◽

Aquatic Environments ◽

Soil Algae ◽

Monsoon Climate ◽

Distinct Mode ◽

Mode Of Reproduction ◽

Rdna Sequence Data ◽

A New Species

Chlorella-like green algae that reproduce only asexually by immotile autospores or motile zoospores are the most typical inhabitants of non-aquatic environments. They have a simple morphology that hampers their differentiation, but algae of such habit represent a diverse array of lineages, which are mostly in the classes Chlorophyceae and Trebouxiophyceae. One of these lineages is the order Watanabeales (Watanabea clade; Trebouxiophyceae), which comprises 10 genera that share a distinct mode of reproduction through unequally sized autospores. Most of these genera account for a few species that are rarely recorded in nature. In contrast, the genus Chloroidium is one of the most species-rich and widely distributed members of the order. Three strains of coccoid green alga were isolated during a study of soil algae in the temperate monsoon climate zone of Asia. These strains are described here as a new species, Chloroidium orientalis. SSU and ITS rDNA sequence data, morphological characteristics, and life cycle features differentiate these strains from known members of the genus.

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