Mannitol induces the conversion of conidia to chlamydospore-like structures that confer enhanced tolerance to heat, drought, and UV in Gibberella zeae

Microbiological Research
Hokyoung SonYin-Won Lee

Abstract

Fungi use mannitol to store carbon, balance redox, and mannitol serves as an antioxidant. Several fungi also increase stress tolerance by accumulating mannitol. The results of this study showed that conidia of the cereal head blight fungus Gibberella zeae were readily changed to chlamydospore-like structures (CLS) in cultures supplemented with high amounts of mannitol. CLS cellular features were atypical of chlamydospores, but accumulated high levels of glycogen, lipids, and chitin in the cytoplasm. In addition, CLS exhibited increased tolerance to environmental stresses, including UV, heat, and drought compared to normal conidia. Molecular approaches revealed that several genes associated with lipid metabolism, signal transduction, acetyl-CoA production, and chitin synthesis were involved in CLS formation. This is the first report to characterize conidia modifications similar to chlamydospores in G. zeae applying histological and molecular approaches. The results suggest CLS serve a role in G. zeae survival strategies under hot and dry field conditions.

References

Jan 1, 1968·Annual Review of Microbiology·S Bartnicki-Garcia
Dec 1, 1995·FEMS Microbiology Letters·C F Witteveen, J Visser
Aug 13, 2003·Eukaryotic Cell·George J G RuijterJaap Visser
Oct 11, 2005·Eukaryotic Cell·Xiaorong Lin, Joseph Heitman
Feb 8, 2006·Applied and Environmental Microbiology·Jung-Eun KimYin-Won Lee
Dec 2, 2006·Micron : the International Research and Review Journal for Microscopy·Ki Woo Kim, Jae-Wook Hyun
Apr 20, 2007·Trends in Microbiology·Peter S SolomonRichard P Oliver
Oct 24, 2007·Fungal Genetics and Biology : FG & B·Kye-Yong SeongH Corby Kistler
Oct 24, 2008·Phytopathology·R L Bowden, J F Leslie
Mar 24, 2009·Applied and Environmental Microbiology·Jungkwan LeeYin-Won Lee
Nov 6, 2009·Molecular Plant-microbe Interactions : MPMI·John C GuentherFrances Trail
Jan 28, 2010·Fungal Genetics and Biology : FG & B·Sae-Yeon HongYin-Won Lee
Nov 1, 2004·Molecular Plant Pathology·Rubella S Goswami, H Corby Kistler
Jan 18, 2011·Fungal Genetics and Biology : FG & B·Hokyoung SonYin-Won Lee
Nov 26, 2011·Fungal Biology·Hokyoung SonYin-Won Lee
Jun 1, 2006·Mycotoxin Research·J F Leslie, B A Summerell

❮ Previous
Next ❯

Citations

Sep 1, 2014·Journal of Industrial Microbiology & Biotechnology·Donald G Ahearn, R Doyle Stulting
Oct 7, 2015·Frontiers in Microbiology·Mukesh MeenaRam S Upadhyay
Apr 1, 2015·Current Genetics·Gilberto U L BragaDonald W Roberts
Nov 18, 2014·Frontiers in Microbiology·Thomas W CrowtherMark A Bradford
Jul 5, 2019·Scientific Reports·Carolina Sardinha FranciscoJavier Palma-Guerrero
Dec 10, 2019·International Journal of Food Microbiology·Manon LebleuxSandrine Rousseaux
Oct 15, 2021·Environmental Science and Pollution Research International·Lijun ShenGuang Chen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Candidiasis

Candidiasis is a common fungal infection caused by Candida and it can affect many parts for the body including mucosal membranes as well as the gastrointestinal, urinary, and respiratory tracts. Here is the latest research.

Candidiasis (ASM)

Candidiasis is a common fungal infection caused by Candida and it can affect many parts for the body including mucosal membranes as well as the gastrointestinal, urinary, and respiratory tracts. Here is the latest research.

Candida albicans

Candida albicans is an opportunistic, fungal pathogen of humans that frequently causes superficial infections of oral and vaginal mucosal surfaces of debilitated and susceptible individuals. Discover the latest research on Candida albicans here.