scholarly journals Comparative genomic analysis of obligately piezophilic Moritella yayanosii DB21MT-5 reveals bacterial adaptation to the Challenger Deep, Mariana Trench

2021 ◽  
Vol 7 (7) ◽  
Author(s):  
Wei-Jia Zhang ◽  
Chan Zhang ◽  
Siyu Zhou ◽  
Xue-Gong Li ◽  
Sophie Mangenot ◽  
...  
Keyword(s):  
Metal Ion ◽  
Type Species ◽  
Genomic Analysis ◽  
Comparative Genomic Analysis ◽  
Comparative Genomic ◽  
Mariana Trench ◽  
Content Type ◽  
Microbial Adaptation ◽  
Link Type ◽  
Challenger Deep

Hadal trenches are the deepest but underexplored ecosystems on the Earth. Inhabiting the trench bottom is a group of micro-organisms termed obligate piezophiles that grow exclusively under high hydrostatic pressures (HHP). To reveal the genetic and physiological characteristics of their peculiar lifestyles and microbial adaptation to extreme high pressures, we sequenced the complete genome of the obligately piezophilic bacterium Moritella yayanosii DB21MT-5 isolated from the deepest oceanic sediment at the Challenger Deep, Mariana Trench. Through comparative analysis against pressure sensitive and deep-sea piezophilic Moritella strains, we identified over a hundred genes that present exclusively in hadal strain DB21MT-5. The hadal strain encodes fewer signal transduction proteins and secreted polysaccharases, but has more abundant metal ion transporters and the potential to utilize plant-derived saccharides. Instead of producing osmolyte betaine from choline as other Moritella strains, strain DB21MT-5 ferments on choline within a dedicated bacterial microcompartment organelle. Furthermore, the defence systems possessed by DB21MT-5 are distinct from other Moritella strains but resemble those in obligate piezophiles obtained from the same geographical setting. Collectively, the intensive comparative genomic analysis of an obligately piezophilic strain Moritella yayanosii DB21MT-5 demonstrates a depth-dependent distribution of energy metabolic pathways, compartmentalization of important metabolism and use of distinct defence systems, which likely contribute to microbial adaptation to the bottom of hadal trench.

scholarly journals Immunomodulatory potential of four candidate probiotic Lactobacillus strains from plant and animal origin using comparative genomic analysis

2021 ◽  
Vol 3 (12) ◽  
Author(s):  
Paul Benedic U. Salvador ◽  
Leslie Michelle M. Dalmacio ◽  
Sang Hoon Kim ◽  
Dae-Kyung Kang ◽  
Marilen P. Balolong
Keyword(s):  
Type Species ◽  
Genomic Analysis ◽  
Comparative Genomic Analysis ◽  
Comparative Genomic ◽  
Genome Alignment ◽  
Content Type ◽  
Link Type ◽  
Gene Mining ◽  
Probiotic Strains ◽  
Immunomodulatory Potential

Probiotic strains from different origins have shown promise in recent decades for their health benefits, for example in promoting and regulating the immune system. The immunomodulatory potential of four Lactobacillus strains from animal and plant origins was evaluated in this paper based on their genomic information. Comparative genomic analysis was performed through genome alignment, average nucleotide identity (ANI) analysis and gene mining for putative immunomodulatory genes. The genomes of the four Lactobacillus strains show relative similarities in multiple regions, as observed in the genome alignment. However, ANI analysis showed that L. mucosae LM1 and L. fermentum SK152 are the most similar when considering their nucleotide sequences alone. Gene mining of putative immunomodulatory genes studied from L. plantarum WCFS1 yielded multiple results in the four potential probiotic strains, with L. plantarum SK151 showing the largest number of genes at around 74 hits, followed by L. johnsonii PF01 at 41 genes when adjusted for matches with at least 30 % identity. Looking at the immunomodulatory genes in each strain, L. plantarum SK151 and L. johnsonii PF01 may have wider activity, covering both immune activation and immune suppression, as compared to L. mucosae LM1 and L. fermentum SK152, which could be more effective in activating immune cells and the pro-inflammatory cascade rather than suppressing it. The similarities and differences between the four Lactobacillus species showed that there is no definitive trend based on the origin of isolation alone. Moreover, higher percentage identities between genomes do not directly correlate with higher similarities in potential activity, such as in immunomodulation. The immunomodulatory function of each of the four Lactobacillus strains should be observed and verified experimentally in the future, since some the activity of some genes may be strain-specific, which would not be identified through comparative genomics alone.

scholarly journals Comparative genomic analysis of Escherichia coli isolates from cases of bovine clinical mastitis identifies nine specific pathotype marker genes

2021 ◽  
Vol 7 (7) ◽  
Author(s):  
Dongyun Jung ◽  
Soyoun Park ◽  
Janina Ruffini ◽  
Forest Dussault ◽  
Simon Dufour ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Type Species ◽  
Genomic Analysis ◽  
Clinical Mastitis ◽  
Comparative Genomic Analysis ◽  
Comparative Genomic ◽  
Marker Genes ◽  
Content Type ◽  
E Coli ◽  
Link Type

Escherichia coli is a major causative agent of environmental bovine mastitis and this disease causes significant economic losses for the dairy industry. There is still debate in the literature as to whether mammary pathogenic E. coli (MPEC) is indeed a unique E. coli pathotype, or whether this infection is merely an opportunistic infection caused by any E. coli isolate being displaced from the bovine gastrointestinal tract to the environment and, then, into the udder. In this study, we conducted a thorough genomic analysis of 113 novel MPEC isolates from clinical mastitis cases and 100 bovine commensal E. coli isolates. A phylogenomic analysis indicated that MPEC and commensal E. coli isolates formed clades based on common sequence types and O antigens, but did not cluster based on mammary pathogenicity. A comparative genomic analysis of MPEC and commensal isolates led to the identification of nine genes that were part of either the core or the soft-core MPEC genome, but were not found in any bovine commensal isolates. These apparent MPEC marker genes were genes involved with nutrient intake and metabolism [adeQ, adenine permease; nifJ, pyruvate-flavodoxin oxidoreductase; and yhjX, putative major facilitator superfamily (MFS)-type transporter], included fitness and virulence factors commonly seen in uropathogenic E. coli (pqqL, zinc metallopeptidase, and fdeC, intimin-like adhesin, respectively), and putative proteins [yfiE, uncharacterized helix-turn-helix-type transcriptional activator; ygjI, putative inner membrane transporter; and ygjJ, putative periplasmic protein]. Further characterization of these highly conserved MPEC genes may be critical to understanding the pathobiology of MPEC.

scholarly journals Lactobacillus salitolerans sp. nov., a novel lactic acid bacterium isolated from spent mushroom substrates

2019 ◽  
Vol 69 (4) ◽  
pp. 964-969 ◽  
Author(s):  
Masanori Tohno ◽  
Yasuhiro Tanizawa ◽  
Yoichiro Kojima ◽  
Mitsuo Sakamoto ◽  
Yasukazu Nakamura ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Type Species ◽  
Sequence Similarity ◽  
Genomic Analysis ◽  
Comparative Genomic ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Gene Sequence Analysis ◽  
Bacterium Strain

A taxonomic study of a Gram-stain-positive, rod-shaped, non-motile, non-spore-forming, catalase-negative bacterium, strain YK43T, isolated from spent mushroom substrates stored in Nagano, Japan was performed. Growth was detected at 15–45 °C, pH 5.0–8.5, and 0–10 % (w/v) NaCl. The genomic DNA G+C content of strain YK43T was 43.6 mol%. The predominant fatty acids were C16 : 0, C18 : 1 ω9c and summed feature 8. Based on 16S rRNA gene sequence analysis, the type strains of Lactobacillus acidipiscis (sequence similarity, 97.6 %) and Lactobacillus pobuzihii (97.4 %) were most closely related to YK43T. The average nucleotide identities were 74.1 % between strain YK43T and L. acidipiscis DSM 15836T and 74.0 % between YK43T and L. pobuzihii E100301T. Based on a multilocus sequence analysis, comparative genomic analysis and a range of phenotypic and chemotaxonomic characteristics, strain YK43T represents a novel species of the genus Lactobacillus , for which the name Lactobacillus salitolerans sp. nov. is proposed. The type strain is YK43T (=JCM 31331T = DSM 103433T).

scholarly journals Sphingomonas profundi sp. nov., isolated from deep-sea sediment of the Mariana Trench

2020 ◽  
Vol 70 (6) ◽  
pp. 3809-3815 ◽  
Author(s):  
Shanshan Yang ◽  
Xuegong Li ◽  
Xiang Xiao ◽  
Guangjiao Zhuang ◽  
Yu Zhang
Keyword(s):  
Deep Sea ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Mariana Trench ◽  
Content Type ◽  
Deep Sea Sediment ◽  
Link Type ◽  
Bacterium Strain ◽  
Challenger Deep

A Gram-stain-negative, short rod-shaped, yellow bacterium (strain LMO-1T) was isolated from deep-sea sediment of the Mariana Trench, Challenger Deep. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain LMO-1T belonged to genus Sphingomonas , with the highest sequence similarity to Sphingomonas formosensis CC-Nfb-2T (96.3 %), followed by Sphingomonas prati W18RDT (96.1 %), Sphingomonas arantia 6PT (96.0 %) and Sphingomonas montana W16RDT (95.9 %). The predominant polar lipids were phosphatidylethanolamine, sphingoglycolipid, phosphatidylglycerol and phosphatidylcholine. The main cellular fatty acids were summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), C16 : 0 and C14 : 0 2-OH. The major polyamine was sym-homospermidine and the predominant isoprenoid quinone was ubiquinone-10. The genome DNA G+C content of strain LMO-1T was 69.2 mol%. The average nucleotide identity and DNA–DNA hybridization values between strain LMO-1T and CC-Nfb-2T were 75.9 and 20.5 %, respectively. Based on these data, LMO-1T should be classified as representing a novel species of the genus Sphingomonas , for which the name Sphingomonas profundi sp. nov. is proposed. The type strain is LMO-1T (=MCCC 1K04066T=JCM 33666T).

Reclassification of Parvularcula flava as Aquisalinus luteolus nom. nov. and emended description of the genus Aquisalinus

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Jun-Jie Ying ◽  
Zhi-Cheng Wu ◽  
Yuan-Chun Fang ◽  
Lin Xu ◽  
Cong Sun
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Comparative Genomic ◽  
Rrna Gene ◽  
Gene Sequences ◽  
16S Rrna Gene Sequences ◽  
Content Type ◽  
Link Type ◽  
Type Strains

Parvularcula flava was proposed as a novel member of genus Parvularcula in 2016. Some time earlier, Aquisalinus flavus has been proposed as a novel species of a novel genus named Aquisalinus . When comparing the 16S rRNA gene sequences of type strains P. flava NH6-79T and A. flavus D11M-2T, they showed 97.9 % sequence identity, much higher than the sequence identities 92.7–94.3 % between P. flava NH6-79T and type strains in the genus Parvularcula , indicating that the later proposed novel taxon Parvularcula flava need reclassification. The phylogenetic trees based on 16S rRNA gene sequences and genome sequences both showed that P. flava NH6-79T and A. flavus D11M-2T formed a separated branch away from strains in the genera Parvularcula , Marinicaulis and Amphiplicatus . The average amino acid identity and average nucleotide identity values of P. flava NH6-79T and A. flavus D11M-2T were 87.9 and 85.0 %, respectively, much higher than the values between P. flava NH6-79T and other closely related type strains (54.3 %–58.1 % and 68.6–70.4 %, respectively). P. flava NH6-79T and A. flavus D11M-2T also contained summed feature 8 (C18 : 1  ω6c and/or C18 : 1  ω7c) and C16 : 0 as major fatty acids, distinguishing them from other closely related taxa. Based on the results of the phylogenetic, comparative genomic and phenotypic analyses, Parvularcula flava should be reclassified as Aquisalinus luteolus nom. nov. and the description of genus Aquisalinus is emended.

Roseomonas oleicola sp. nov., isolated from an oil production mixture in Yumen Oilfield, and emended description of Roseomonas frigidaquae

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Danni Wu ◽  
Hongcan Liu ◽  
Yuguang Zhou ◽  
Xiaolei Wu ◽  
Yong Nie ◽  
...  
Keyword(s):  
Type Species ◽  
Genomic Analysis ◽  
Oil Production ◽  
Gene Families ◽  
Specific Gene ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Content Type ◽  
Link Type ◽  
Type Strains

A pink, ovoid-shaped, Gram-stain-negative, strictly aerobic and motile bacterial strain, designated ROY-5-3T, was isolated from an oil production mixture from Yumen Oilfield in PR China. The strain grew at 4–42 °C (optimum, 30 °C), at pH 5–10 (optimum, 7) and with 0–5 % (w/v) NaCl (optimum, 0%). The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that ROY-5-3T belongs to the genus Roseomonas and shared the highest pairwise similarities with Roseomonas frigidaquae CW67T (98.1%), Roseomonas selenitidurans BU-1T (97.8%), Roseomonas tokyonensis K-20T (97.7%) and Roseomonas stagni HS-69T (97.3%). The average nucleotide identity and digital DNA–DNA hybridization values between ROY-5-3T and other related type strains of Roseomonas species were less than 84.08 and 28.60 %, respectively, both below the species delineation threshold. Pan-genomic analysis showed that the novel isolate ROY-5-3T shared 3265 core gene families with the four closely related type strains in Roseomonas , and the number of strain-specific gene families was 513. The major fatty acids were identified as summed feature 8 (C18 : 1 ω6c/C18 : 1 ω7c), summed feature 3 (C16 : 1 ω6c/C16 : 1 ω7c) and C16 : 0. Strain ROY-5-3T contained Q-10 as the main ubiquinone and the genomic DNA G+C content was 69.8 mol%. The major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine and phosphatidylglycerol. Based on the phylogenetic, morphological, physiological, chemotaxonomic and genome analyses, strain ROY-5-3T represents a novel species of the genus Roseomonas for which the name Roseomonas oleicola sp. nov. is proposed. The type strain is ROY-5-3T (=CGMCC 1.13459T =KCTC 82484T).

Description of Novosphingopyxis iocasae sp. nov., isolated from deep sea sediment from the Mariana Trench, and emended description of the genus Novosphingopyxis

2021 ◽  
Vol 71 (7) ◽  
Author(s):  
Hai-zhen Zhou ◽  
Jian Zhang ◽  
Qing-lei Sun
Keyword(s):  
Deep Sea ◽  
Type Species ◽  
Sequence Similarity ◽  
Metal Resistance ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Mariana Trench ◽  
Content Type ◽  
Deep Sea Sediment ◽  
Link Type

In this study, we reported a Gram-stain-negative, orange-coloured, rod-shaped, motile and faculatively anaerobic bacterium named strain PB63T, which was isolated from the deep-sea sediment from the Mariana Trench. Growth of PB63T occurred at 10–35 °C (optimum, 28 °C), pH 5.0–8.0 (optimum, 5.0–6.0) and with 0–7 % (w/v) NaCl (optimum, 2–3 %). The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that PB63T represented a member of the genus Novosphingopyxis and was closely related to Novosphingopyxis baekryungensis DSM 16222T (97.9 % sequence similarity). PB63T showed tolerance to a variety of heavy metals, including Co2+, Zn2+, Mn2+ and Cu2+. The complete genome of PB63T was obtained, and many genes involved in heavy metal resistance were found. The genomic DNA G+C content of PB63T was 62.8 mol%. The predominant respiratory quinone of PB63T was ubiquinone-10 (Q-10). The polar lipids of PB63T contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, sphingoglycolipid, glycolipid, phosphatidylcholines and three unidentified lipids. The major fatty acids of PB63T included summed feature 8 (C18 : 1ω7c or/and C18 : 1ω6c), C14 : 0 2-OH, 11-methyl C18 : 1ω7c, C16 : 0, summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c) and C17 : 1ω6c. The results of phylogenetic, physiological, biochemical and morphological analyses indicated that strain PB63T represents a novel species of the genus Novosphingopyxis , and the name Novosphingopyxis iocasae sp. nov. is proposed with the type species PB63T (=CCTCC AB 2019195T=JCM 34178T).

scholarly journals Lichenicola cladoniae gen. nov., sp. nov., a member of the family Acetobacteraceae isolated from an Antarctic lichen

2020 ◽  
Vol 70 (11) ◽  
pp. 5918-5925 ◽  
Author(s):  
Hyun-Ju Noh ◽  
Seung Chul Shin ◽  
Yerin Park ◽  
Ahyoung Choi ◽  
Kiwoon Baek ◽  
...  
Keyword(s):  
Type Species ◽  
Genomic Analysis ◽  
Phylogenetic Position ◽  
Rrna Gene ◽  
Bacterial Strains ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
The Family ◽  
Nitrate And Nitrite

Two Gram-stain-negative, facultative anaerobic, chemoheterotrophic, pink-coloured, rod-shaped and non-motile bacterial strains, PAMC 26568 and PAMC 26569T, were isolated from an Antarctic lichen. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains PAMC 26568 and PAMC 26569T belong to the family Acetobacteraceae and the most closely related species are Gluconacetobacter takamatsuzukensis (96.1 %), Gluconacetobacter tumulisoli (95.9 %) and Gluconacetobacter sacchari (95.7 %). Phylogenomic and genomic relatedness analyses showed that strains PAMC 26568 and PAMC 26569T are clearly distinguished from other genera in the family Acetobacteraceae by average nucleotide identity values (<72.8 %) and the genome-to-genome distance values (<22.5 %). Genomic analysis revealed that strains PAMC 26568 and PAMC 26569T do not contain genes involved in atmospheric nitrogen fixation and utilization of sole carbon compounds such as methane and methanol. Instead, strains PAMC 26568 and PAMC 26569T possess genes to utilize nitrate and nitrite and certain monosaccharides and disaccharides. The major fatty acids (>10 %) are summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c; 40.3–40.4 %), C18 : 1 2OH (22.7–23.7 %) and summed feature 2 (C14 : 0 3OH and/or C16 : 1 iso I; 12.0 % in PAMC 26568). The major respiratory quinone is Q-10. The genomic DNA G+C content of PAMC 26568 and PAMC 26569T is 64.6 %. Their distinct phylogenetic position and some physiological characteristics distinguish strains PAMC 26568 and PAMC 26569T from other genera in the family Acetobacteraceae supporting the proposal of Lichenicola gen. nov., with the type species Lichenicola cladoniae sp. nov. (type strain, PAMC 26569T=KCCM 43315T=JCM 33604T).

scholarly journals Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species

2020 ◽  
Vol 70 (11) ◽  
pp. 5753-5798 ◽  
Author(s):  
Radhey S. Gupta ◽  
Sudip Patel ◽  
Navneet Saini ◽  
Shu Chen
Keyword(s):  
Type Species ◽  
Phylogenetic Trees ◽  
Bacillus Species ◽  
Comparative Genomic ◽  
Molecular Evidence ◽  
Content Type ◽  
Link Type ◽  
Conserved Signature Indels ◽  
Genomic Scale

To clarify the evolutionary relationships and classification of Bacillus species, comprehensive phylogenomic and comparative analyses were performed on >300 Bacillus/Bacillaceae genomes. Multiple genomic-scale phylogenetic trees were initially reconstructed to identify different monophyletic clades of Bacillus species. In parallel, detailed analyses were performed on protein sequences of genomes to identify conserved signature indels (CSIs) that are specific for each of the identified clades. We show that in different reconstructed trees, most of the Bacillus species, in addition to the Subtilis and Cereus clades, consistently formed 17 novel distinct clades. Additionally, some Bacillus species reliably grouped with the genera Alkalicoccus, Caldalkalibacillus, Caldibacillus, Salibacterium and Salisediminibacterium . The distinctness of identified Bacillus species clades is independently strongly supported by 128 identified CSIs which are unique characteristics of these clades, providing reliable means for their demarcation. Based on the strong phylogenetic and molecular evidence, we are proposing that these 17 Bacillus species clades should be recognized as novel genera, with the names Alteribacter gen. nov., Ectobacillus gen. nov., Evansella gen. nov., Ferdinandcohnia gen. nov., Gottfriedia gen. nov., Heyndrickxia gen. nov., Lederbergia gen. nov., Litchfieldia gen. nov., Margalitia gen. nov., Niallia gen. nov., Priestia gen. nov., Robertmurraya gen. nov., Rossellomorea gen. nov., Schinkia gen. nov., Siminovitchia gen. nov., Sutcliffiella gen. nov. and Weizmannia gen. nov. We also propose to transfer ‘ Bacillus kyonggiensi s’ to Robertmurraya kyonggiensis sp. nov. (type strain: NB22=JCM 17569T=DSM 26768). Additionally, we report 31 CSIs that are unique characteristics of either the members of the Subtilis clade (containing the type species B. subtilis ) or the Cereus clade (containing B. anthracis and B. cereus ). As most Bacillus species which are not part of these two clades can now be assigned to other genera, we are proposing an emended description of the genus Bacillus to restrict it to only the members of the Subtilis and Cereus clades.

scholarly journals Marinobacter changyiensis, sp. nov., isolated from offshore sediment

2020 ◽  
Vol 70 (5) ◽  
pp. 3004-3011 ◽  
Author(s):  
Guangyu Li ◽  
Shanshan Wang ◽  
Yingbao Gai ◽  
Xiupian Liu ◽  
Qiliang Lai ◽  
...  
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Genomic Analysis ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Promising Alternative ◽  
Content Type ◽  
Link Type ◽  
Marine Sediment Sample ◽  
Major Respiratory Quinone

An aerobic, Gram-stain-negative bacterium, designated CLL7-20T, was isolated from a marine sediment sample from offshore of Changyi, Shandong Province, China. Cells of strain CLL7-20T were rod-shaped, motile with one or more polar flagella, and grew optimally at pH 7.0, at 28 °C and with 3 % (w/v) NaCl. The principal fatty acids of strain CLL7-20T were C16 : 0 and summed feature 3 (C16 : 1 ω7c/C16 : 1 ω6c). The main polar lipids of strain CLL7-20T were phosphatidylethanolamine (PE), phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and an unidentified aminolipid (AL). Strain CLL7-20T contained Q-9 as the major respiratory quinone. The G+C content of its genomic DNA was 56.2 mol%. Phylogenetically, strain CLL7-20T branched within the genus Marinobacter , with M. daqiaonensis YCSA40T being its closest phylogenetic relative (96.7 % 16S rRNA gene sequence similarity), followed by M. sediminum R65T (96.6 %). Average nucleotide identity and in silico DNA–DNA hybridization values between strain CLL7-20T and the closest related reference strains were 73.2% and 19.8 %, respectively. On the basis of its phenotypic, phylogenetic and chemotaxonomic characteristics, we suggest that strain CLL7-20T (=MCCC 1A14855T=KCTC 72664T) is the type strain of a novel species in the genus Marinobacter , for which the name Marinobacter changyiensis sp. nov. is proposed. Based on the genomic analysis, siderophore genes were found from strain CLL7-20T, which indicate its potential as a promising alternative to chemical fertilizers in iron-limitated environments such as saline soils.

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