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Journal of Bioresources and Bioproducts 2023年第4期8卷 461-477页

作者： Zhaoxian Xu Jie Li Pingping Li Chenggu Cai Sitong Chen Boning Ding Shuangmei Liu Mianshen Ge Mingjie Jin School of Environmental and Biological Engineering Nanjing University of Science and TechnologyNanjing210094China Biorefinery Research Institution Nanjing University of Science and TechnologyNanjing210094China

Low lignin solubility in aqueous solution is one of the major bottlenecks for lignin biodegradation and *** solution contributes to improving lignin solubility,whereas most microbes can not survive in alkaline ***,lignin dissolution behaviors in different pH solutions were systematically investigated,which indicated that solution pH above 10.5 contributed to high solubility of alkali *** match with alkaline lignin aqueous system,several alkali-tolerant ligninolytic bacteria were isolated,most of which are distinct to previously reported ***,the ligninolytic capabilities of these isolates were assessed in different pH conditions by determining their assimilation on alkali lignin,lignin-derived monomers and dimers,their decolorization capabilities,and their lignin peroxidase ***,the underlying ligninolytic and alkali-tolerant mechanisms of Sutcliffiella ***1,an alkalophilic bacterium,was analyzed on the basis of its genome *** results not only provide valuable information for lignin biodegradation and lignin valorization,but also expand knowledge on alkali-tolerant bacteria.

关键词： Biorefinery Lignin valorization Lignin biodegradation Lignin solubility extremophile Alkali-tolerant bacteria

Xerotolerant foliar endophytic fungi of Populus euphratica from the Tarim River basin,Central China are conspecific to endophytic ITS phylotypes of Populus tremula from temperate Europe

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Fungal Diversity 2012年第3期54卷 133-142页

作者： Martin Unterseher Anne Petzold Martin Schnittler Institute of Botany and Landscape Ecology Department of Systematic BotanyErnst-Moritz-Arndt UniversityGrimmer Str.8817487 GreifswaldGermany

Fungal research on non-lichenized taxa in xeric and other unusual habitats for fungi is comparatively scarce but constantly reveal an enormous ecological and functional adaptiveness of these organisms to *** holds true in the topmost forest canopies as well as in marine,arctic,antarctic or desert *** the present study dried leaves of Populus euphratica from a continental desert area in Central China were investigated for endophytic fungi 6 weeks after sampling by cultivation of small leaf ***-five species,many of them well-known from extreme environments,were delimitated from as few as 58 isolates by a combined analysis of morphotypes,micromorphology and ITS ***-analyses revealed pronounced conspecificity to endophytes from Populus tremula leaves,but significant differences to foliar endophytic assemblages in Pinus monticola and Fagus *** deduced high similarity of endophytic communities on both Populus species compared with that on Pinus and Fagus suggests that many fungal phyllosphere species show a well-pronounced host preference,at least for their endophytic *** addition,it demonstrates that leaving leaves as a microhabitat might provide similar conditions such as constantly high relative humidity,regardless of the surrounding climatic *** evolution of extremotolerance might be of particular importance for retaining competitiveness of foliar endophytes in deciduous host trees after loss of pathogenicity.

关键词： Frost-drought tolerance extremophile Alternaria Cladosporium Penicillium Evolution of endophytism

On the diversity of fungi from soda soils

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Fungal Diversity 2016年第1期76卷 27-74页

作者： Alexey A.Grum-Grzhimaylo Marina L.Georgieva Sofiya A.Bondarenko Alfons J.M.Debets Elena N.Bilanenko Laboratory of Genetics Plant Sciences GroupWageningen UniversityDroevendaalsesteeg 16708 PB WageningenThe Netherlands Gause Institute of New Antibiotics Federal State Budgetary Scientific InstitutionBol’shaya Pirogovskaya 11119021 MoscowRussia Faculty of Biology Lomonosov Moscow State UniversityLeninskie Gory 1-12119234 MoscowRussia

The diversity of filamentous fungi that can grow at high ambient pH values(i.e.,8–11)remains largely *** we study 100 alkalitolerant and alkaliphilic isolates from the soils around the basin of soda lakes in Asia and Africa to assess the major evolutionary lineages and morphologies pertinent to the alkaliphilic trait in filamentous *** Emericellopsis lineage(Hypocreales,Hypocreomycetidae),along with Plectosphaerellaceae(Hypocreomycetidae),Pleosporaceae(Dothideomycetes),Chaetomiaceae(Sordariomycetidae)families appeared to be overrepresented with strong alkalitolerants and effective *** particular,Sodiomyces species(Plectosphaerellaceae),Acrostalagmus luteoalbus(Plectosphaerellaceae),Emericellopsis alkalina(Hypocreales),Thielavia sp.(Chaetomiaceae),and Alternaria ***(Pleosporaceae)grew best at high ambient *** pH tolerance of Chordomyces antarcticum,Acrostalagmus luteoalbus and some other species was largely affected by the presence of extra Na+in the growth *** alkalitolerants included Scopulariopsis members(Microascales),Fusarium,Cladosporium,and many asexual acremonium-like species from *** alkalitolerants were represented by sporadic isolates of Penicillium,Purpureocillium lilacinum,and Alternaria alternata species,with the growth optimum at neutral or acidic *** alkalitolerants develop loose dry chains of spores easily dispersed by *** presence at low frequency with the growth optimum at neutral or acidic pH leads us to treat them as transient species in the alkaline soils,as those are also ubiquitous saprobes in normal *** phylogenetic analyses show that the alkaliphilic trait in filamentous fungi has evolved several *** lineages harboring strong alkalitolerants derived from the known marine-borne fungi(Emericellopsis,Alternaria ***),or fall within the fungi associated with halophytic grasses(Pleosporaceae).Soda soils contain a diversity of fungi that ra

关键词： Alkaliphilic fungi pH Soda soils extremophile Sodiomyces Acrostalagmus Chordomyces Verticillium Emericellopsis Acremonium Scopulariopsis Alternaria Thielavia Plectosphaerellaceae Pleosporaceae

Life in extreme environments: Approaches to study life-environment co-evolutionary strategies

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Science China Earth Sciences 2014年第6期57卷 869-877页

作者： XIAO Xiang ZHANG Yu State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University State Key Laboratory of Microbial Metabolism Shanghai Jiao Tong University

The term ＂extreme environments＂ describes the conditions that deviate from what mesophilic cells can tolerate. These condi- tions are ＂extreme＂ in the eye of mankind, but they may be suitable or even essential living conditions for most microorgan- isms. Hypertherrnophilic microorganisms form a branch at the root of the phylogenetic tree, indicating that early life originated from extreme environments similar to that of modern deep-sea hydrothermal vents, which are characterized by high-tempera- ture and oxygen-limiting conditions. During the inevitable cooling and gradual oxidation process on Earth, microorganisms developed similar mechanisms of adaptation. By studying modem extremophiles, we may be able to decode the mysterious history of their genomic evolution and to reconstruct e~,rly life. Because life itself is a process of energy uptake to maintain a dissipative structure that is not in thermodynamic equilibrium, the energy metabolism of microorganisms determines the path- way of evolution, the structure of an ecosystem, and the physiology of cells. ＂Following energy＂ is an essential approach to understand the boundaries of life and to search for life beyond Earth.

关键词： energy extremophile adaptation coevolution

A Novel Halotolerant Bacterium Isolated from El Golea Lake in Algeria and Antimicrobial Potential of this Strain

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Journal of Agricultural Science and Technology(A) 2013年第10期3卷 825-834页

作者： Nihel Klouche Khelil Nadia Aissaoui Fatima Nas Jean Luc Cayol Lotfi Ghellai Laboratoire de Microbiologie Appliqude dt l 'Agro-Alimentaire au Biomedical et 3 1 'Environnement (LAMMABE) Ddpartement deBiologie Facult~ des Sciences de la Nature et de la Vie et des Sciences de la Terre et de l 'Univers Universite de Tlemcen 13000Algerie Faculte de Mddecine Universite de Tlemcen 13000 Algerie IRD UR 101 ExtrOmophiles IFR-BAIM Universit~ de Provence et de la Mediterranee'e ESIL 163 Avenue de Luminy F-13288Marseille cedex 09 France

A halotolerant, gram positive, motile and rod, was isolated from the E1 Gol6a lake of Ghardaia, Alegria and screened for its antimicrobial potential. The strain showed an inhibitory effect to gram positive and gram negative bacteria against Cladosporium spp. and a slight inhibitory effect against C. albicans using chloroform as the extraction solvent and the nutrient broth as production medium. 16S rRNA sequencing showed that the isolate named LMB3981 is a new taxon in the family of Bacillaceae （with 96% similarity）. The strain is close to Filobacillus milosensis and Bacillus haloalkaliphilum with 95% similarity. The phenotypic study showed differences between LMB3981 and two strains that are near and have confirmed the results of 16S rRNA sequencing by specific metabolic properties of the strain.

关键词： New taxa extremophile antimicrobial molecules halotolerant Bacillus genus El Golea Lake.