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Microorganisms, Volume 8, Issue 4

April 2020 - 158 articles

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Cover Story: Dark septate endophytes (DSEs) are polyphyletic ascomycetes that form intimate associations with the roots of most plant species. DSEs have a wide geographical distribution (from arctic to tropical ecosystems) and display strong abilities to tolerate a range of environmental stresses. DSEs are particularly tolerant to trace elements (TE) and are commonly found in soils heavily contaminated by TE. Moreover, the beneficial inoculation of several plant species to cope with TE toxicity has also been reported. The high production of melanin, a black polymer found in cell walls, was hypothesized by several authors to play a role in the TE tolerance of DSEs. To test this hypothesis, we established a series of experiments using albino strains and melanin inhibitors and examined the responses to Cd and Zn. We demonstrate that melanin production is not an important functional trait that contributes to Cd and Zn tolerance, but might contribute to Cd accumulation.

Articles (158)

Microbial Resource Management for Ex Situ Biomethanation of Hydrogen at Alkaline pH

  • Washington Logroño,
  • Denny Popp,
  • Sabine Kleinsteuber,
  • Heike Sträuber,
  • Hauke Harms and
  • Marcell Nikolausz

Biomethanation is a promising solution to convert H2 (produced from surplus electricity) and CO2 to CH4 by using hydrogenotrophic methanogens. In ex situ biomethanation with mixed cultures, homoacetogens and methanogens compete for H2/CO2. We enriche...

  • Article
  • Open Access
18 Citations
4,563 Views
18 Pages

Despite displaying broad tropism in vivo, human cytomegalovirus (CMV) contained in bodily fluids replicates inefficiently in most cultured cell types except fibroblasts. As propagation in fibroblasts leads to the accumulation of genomic changes, a nu...

  • Review
  • Open Access
61 Citations
8,606 Views
18 Pages

Recent Advances in Strategies for Activation and Discovery/Characterization of Cryptic Biosynthetic Gene Clusters in Streptomyces

  • Chung Thanh Nguyen,
  • Dipesh Dhakal,
  • Van Thuy Thi Pham,
  • Hue Thi Nguyen and
  • Jae-Kyung Sohng

Streptomyces spp. are prolific sources of valuable natural products (NPs) that are of great interest in pharmaceutical industries such as antibiotics, anticancer chemotherapeutics, immunosuppressants, etc. Approximately two-thirds of all known antibi...

  • Article
  • Open Access
7 Citations
7,881 Views
11 Pages

Throughout fermentation, yeast faces continuously changing medium conditions and reacts by adapting its metabolism. The adaptation is a critical process and is dependent on the accurate functioning of the cell. A stable membrane potential, which is,...

  • Review
  • Open Access
5 Citations
4,238 Views
8 Pages

The bacterivorous nematode Caenorhabditis elegans is an important model species for understanding genetic variation of complex traits. So far, most studies involve axenic laboratory settings using Escherichia coli as the sole bacterial species. Over...

  • Article
  • Open Access
55 Citations
11,787 Views
24 Pages

Fusarium head blight (FHB) is one of the most important diseases of wheat, causing yield losses and mycotoxin contamination of harvested grain. A complex of different toxigenic Fusarium species is responsible for FHB and the composition and predomina...

  • Article
  • Open Access
28 Citations
6,039 Views
10 Pages

Incidental Prophylactic Appendectomy Is Associated with a Profound Microbial Dysbiosis in the Long-Term

  • Lidia Sánchez-Alcoholado,
  • José Carlos Fernández-García,
  • Carolina Gutiérrez-Repiso,
  • M Rosa Bernal-López,
  • Luis Ocaña-Wilhelmi,
  • Eduardo García-Fuentes,
  • Isabel Moreno-Indias and
  • Francisco J. Tinahones

Incidental prophylactic surgeries are performed in certain situations. Incidental prophylactic appendectomies were common practice within opened bariatric surgeries. The gut microbiota has emerged as an important actor within the homeostasis of the h...

  • Article
  • Open Access
5 Citations
3,872 Views
16 Pages

Taxogenomics of the Genus Cyclobacterium: Cyclobacterium xiamenense and Cyclobacterium halophilum as Synonyms and Description of Cyclobacterium plantarum sp. nov.

  • Azadeh Shahinpei,
  • Mohammad Ali Amoozegar,
  • Leila Mirfeizi,
  • Mahdi Moshtaghi Nikou,
  • Antonio Ventosa and
  • Cristina Sánchez-Porro

The genus Cyclobacterium belongs to the phylum Bacteroidetes and includes eight species. Our study, based on the genomic parameters in silico DNA–DNA hybridization (GGDC), average nucleotide identity (OrthoANI), and average amino acid identity...

  • Article
  • Open Access
5 Citations
4,192 Views
14 Pages

Tripeptide glutathione, which plays important roles in many cellular mechanisms, is also a biotechnology-oriented molecule with applications in medicine, food and cosmetic. Here, the engineering of the yeast Yarrowia lipolytica for the production of...

  • Article
  • Open Access
8 Citations
3,078 Views
16 Pages

Glycosphingolipids Recognized by Acinetobacter baumannii

  • Miralda Madar Johansson,
  • Mehjar Azzouz,
  • Beatrice Häggendal,
  • Karin Säljö,
  • Henri Malmi,
  • Anton Zavialov and
  • Susann Teneberg

Acinetobacter baumannii is an opportunistic bacterial pathogen associated with hospital-acquired infections, including pneumonia, meningitis, bacteremia, urinary tract infection, and wound infections. Recognition of host cell surface carbohydrates pl...

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Microorganisms - ISSN 2076-2607Creative Common CC BY license