Stress tolerance and virulence of insect-pathogenic fungi are determined by environmental conditions during conidial formation

Current Genetics
Drauzio E N RangelDonald W Roberts

Abstract

The virulence to insects and tolerance to heat and UV-B radiation of conidia of entomopathogenic fungi are greatly influenced by physical, chemical, and nutritional conditions during mycelial growth. This is evidenced, for example, by the stress phenotypes of Metarhizium robertsii produced on various substrates. Conidia from minimal medium (Czapek's medium without sucrose), complex medium, and insect (Lepidoptera and Coleoptera) cadavers had high, moderate, and poor tolerance to UV-B radiation, respectively. Furthermore, conidia from minimal medium germinated faster and had increased heat tolerance and were more virulent to insects than those from complex medium. Low water-activity or alkaline culture conditions also resulted in production of conidia with high tolerance to heat or UV-B radiation. Conidia produced on complex media exhibited lower stress tolerance, whereas those from complex media supplemented with NaCl or KCl (to reduce water activity) were more tolerant to heat and UV-B than those from the unmodified complex medium. Osmotic and nutritive stresses resulted in production of conidia with a robust stress phenotype, but also were associated with low conidial yield. Physical conditions such as growth under illuminati...Continue Reading

References

Aug 1, 1992·Trends in Genetics : TIG·L M Corrochano, E Cerdá-Olmedo
Oct 1, 1989·The Annals of Physiological Anthropology = Seiri Jinruigaku Kenkyūkai Kaishi·T Shingu
Dec 1, 1987·Journal of Bacteriology·T HottigerA Wiemken
Feb 1, 1993·The Journal of Applied Bacteriology·I K CannS Hoshino
Mar 21, 1993·Biochimica Et Biophysica Acta·E C EleutherioA D Panek
Mar 1, 1997·Australian Veterinary Journal·I W Finnie
Jul 14, 1998·Molecular Cell·M A Singer, S Lindquist
Jul 15, 1998·Critical Reviews in Clinical Laboratory Sciences·H R GriffithsJ Lunec
Aug 1, 1997·Stress : the International Journal on the Biology of Stress·S KentS Levine
Dec 9, 1998·Proceedings of the National Academy of Sciences of the United States of America·D B JenningsJ D Williamson
Dec 29, 1998·FEMS Microbiology Letters·C TamerlerT Keshavarz
Dec 5, 2000·Molecular Biology of the Cell·A P GaschP O Brown
Feb 24, 2001·Journal of Environmental Pathology, Toxicology and Oncology : Official Organ of the International Society for Environmental Toxicology and Cancer·N C Verma, R K Singh
Oct 9, 2002·Proceedings of the National Academy of Sciences of the United States of America·James W WilsonCheryl A Nickerson
Nov 27, 2002·Applied and Environmental Microbiology·Gang Hu, Raymond J St Leger
Dec 27, 2002·The Journal of General and Applied Microbiology·Kaberi Dutta
May 31, 2003·Science·Ivana BjedovIvan Matic
Aug 13, 2003·Eukaryotic Cell·George J G RuijterJaap Visser
Dec 4, 2003·Environmental Microbiology·John E HallsworthKenneth N Timmis
Dec 9, 2003·Applied and Environmental Microbiology·John E HallsworthKenneth N Timmis
Jul 15, 2004·Advances in Applied Microbiology·Donald W Roberts, Raymond J St Leger

❮ Previous
Next ❯

Citations

Feb 18, 2016·Microbial Biotechnology·Jonathan A CrayJohn E Hallsworth
Apr 5, 2015·Current Opinion in Biotechnology·Jonathan A CrayJohn E Hallsworth
Nov 28, 2015·Current Genetics·Prashanth BhagannaJohn E Hallsworth
Jun 7, 2015·Trends in Parasitology·Stephanie S GervasiLynn B Martin
Jul 15, 2015·Journal of Invertebrate Pathology·Divanery Rodriguez-GomezOctavio Loera
Jun 28, 2015·Current Genetics·Drauzio E N RangelJohn E Hallsworth
Apr 1, 2015·Current Genetics·Gilberto U L BragaDonald W Roberts
Jun 24, 2015·Current Genetics·Drauzio E N RangelJohn E Hallsworth
Sep 16, 2016·World Journal of Microbiology & Biotechnology·Gabriel Moura Mascarin, Stefan T Jaronski
Oct 26, 2016·International Journal of Food Microbiology·Nicolas Nguyen Van LongKarim Rigalma
Nov 22, 2016·Environmental Microbiology·Andrew StevensonJohn E Hallsworth
Aug 25, 2019·Environmental Microbiology·Tom van den BruleJan Dijksterhuis
Jun 11, 2015·Environmental Microbiology Reports·Ricardo SantosJohn E Hallsworth
May 15, 2020·Applied Microbiology and Biotechnology·Sen-Miao Tong, Ming-Guang Feng
Feb 18, 2016·FEMS Microbiology Letters·Guilherme T P BranciniGilberto Ú L Braga
Sep 16, 2016·Environmental Microbiology·Andrew StevensonJohn E Hallsworth
Jul 31, 2019·International Journal of Food Microbiology·Jan DijksterhuisPaul Bruinenberg
Sep 13, 2019·Microbial Pathogenesis·J Alberto Patiño-MedinaVictor Meza-Carmen
May 12, 2020·Fungal Biology·Alene Alder-RangelDrauzio E N Rangel
Mar 14, 2018·Journal of Invertebrate Pathology·Ariel S Oliveira, Drauzio E N Rangel
May 12, 2020·Fungal Biology·Edgar Q A MedinaDrauzio E N Rangel

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.