2015
DOI: 10.1590/s1517-838246320140575
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Abstract: In this study, we evaluated the effect of low and high molecular weight polycyclic aromatic hydrocarbons (PAHs), i.e., Phenanthrene, Pyrene and Benzo[a]pyrene, on the radial growth and morphology of the PAH-degrading fungal strains Aspergillus nomius H7 and Trichoderma asperellum H15. The presence of PAHs in solid medium produced significant detrimental effects on the radial growth of A. nomius H7 at 4,000 and 6,000 mg L−1 and changes in mycelium pigmentation, abundance and sporulation ability at 1,000–6,000 m… Show more

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Cited by 36 publications
(18 citation statements)
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“…The tness of parent strains and putative recombinants of C. gloeosporioides was tested under different stresses viz. oxidative stress (H 2 O 2 ), osmotic stresses (NaCl and Sorbitol) by employing surface plate assay (Zafra et al, 2015). Brie y, the C. gloeosporioides putative recombinants and parent strain (1x10 4 conidia) were individually inoculated on the centre of PDA plates containing 30mM H 2 O 2 , 1M NaCl and 1M Sorbitol separately.…”
Section: Assessment Of Hybrid Vigour Of Putative Recombinants Under Smentioning
confidence: 99%
“…The tness of parent strains and putative recombinants of C. gloeosporioides was tested under different stresses viz. oxidative stress (H 2 O 2 ), osmotic stresses (NaCl and Sorbitol) by employing surface plate assay (Zafra et al, 2015). Brie y, the C. gloeosporioides putative recombinants and parent strain (1x10 4 conidia) were individually inoculated on the centre of PDA plates containing 30mM H 2 O 2 , 1M NaCl and 1M Sorbitol separately.…”
Section: Assessment Of Hybrid Vigour Of Putative Recombinants Under Smentioning
confidence: 99%
“…Furthermore, the concentration of the contaminant represents a key point which influenced the degradation of PHAs. Zafra et al, (2015a) have shown that the concentration of contaminant had a selective pressure on hydrocarbon-degrading organisms, and higher PAHs is a growth-limiting for microorganisms which developed a response against PAHs regarding cell membrane structure, mycelia pigmentation, and sporulation alterations.…”
Section: Culture Conditionsmentioning
confidence: 99%
“…They are naturally selected by their environments and are able to develop in the presence of toxic xenobiotics (Marco-Urrea et al 2015). These features are probably due to their physiological adaptation which could lead to the resistance to pollutants resulting in the change in their growth rates and spore production or their ecological adaptation affecting for example pigment production or their genetic adaptation sustained by change in the expression of genes involved in the pollutant degradation (Colpaert et al 2000;Sharples et al 2001;Zafra et al 2015). Fungal metabolic adaptations at different biological levels in response to pollutants may vary according to the species and pollutants, and understanding the involved mechanisms is crucial for the development of an effective bioremediation strategy (Sharples et al 2001;Garon et al 2004;Zafra et al 2015).…”
Section: Introductionmentioning
confidence: 99%
“…These features are probably due to their physiological adaptation which could lead to the resistance to pollutants resulting in the change in their growth rates and spore production or their ecological adaptation affecting for example pigment production or their genetic adaptation sustained by change in the expression of genes involved in the pollutant degradation (Colpaert et al 2000;Sharples et al 2001;Zafra et al 2015). Fungal metabolic adaptations at different biological levels in response to pollutants may vary according to the species and pollutants, and understanding the involved mechanisms is crucial for the development of an effective bioremediation strategy (Sharples et al 2001;Garon et al 2004;Zafra et al 2015). While several studies focused on the screening of strains capable of effectively degrading PCBs (Tigini et al 2009;Mouhamadou et al 2013), to our knowledge, there are still no studies dealing with the mechanisms of indigenous fungal strains adaptation in response to PCBs.…”
Section: Introductionmentioning
confidence: 99%