Chitinases, which can hydrolyze chitin, occur in a wide range of microorganisms including viruses, bacteria, and fungi. The derivatives of chitin are potentially useful in several areas such as food processing, medicines, and biological control in agriculture. Some bacteria can uptake and utilize chitin as carbon source by secreting chitinase. The chitin is degraded into chito-oligosaccharides [(GlcNAc)n] or N-acetylglucosamine (GlcNAc) by chitinases, and then the chitin derivatives are transferred into cells by specific transport systems of bacteria. The intracellular chitin derivatives activate or suppress the transcription of a series of chi genes and affect the amount of chitinase. The expression of chitinase genes are strictly regulated by various regulatory factors and responsive cis-acting elements. The present review will focus on the transport system and the regulation of chitinase genes expression in bacteria.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3724/sp.j.1005.2011.01029 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Insights into mungbean defense response to Cercospora leaf spot based on transcriptome analysis.
Sci Rep
January 2025
School of Crop Production Technology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
Several mungbean (Vigna radiata (L.) Wilczek) cultivars are susceptible to Cercospora leaf spot (CLS) caused by Cercospora canescens Ellis & Martin, and it is necessary to explore resistance sources and understand resistance mechanisms. However, the CLS resistance mechanisms have not yet been explored.
View Article and Find Full Text PDF(T6) Peptaibols Inhibiting the Growth and Inducing Pear Fruit Resistance in Its Infection.
Antioxidants (Basel)
December 2024
College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China.
Pear fruit brown rot, caused by , affects pear fruit yields and quality. The present study determined T6 (T6) peptaibols as a biological control alternative to synthetic fungicides and assessed its efficacy against through dual plate culture and surface spraying at different concentrations. T6 peptaibols effectively inhibited growth, achieving an 85.
View Article and Find Full Text PDFZymocin-like killer toxin gene clusters in the nuclear genomes of filamentous fungi.
Fungal Genet Biol
January 2025
Conway Institute and School of Medicine, University College Dublin, Dublin 4, Ireland. Electronic address:
Zymocin-like killer toxins are anticodon nucleases secreted by some budding yeast species, which kill competitor yeasts by cleaving tRNA molecules. They are encoded by virus-like elements (VLEs), cytosolic linear DNA molecules that are also called killer plasmids. To date, toxins of this type have been found only in budding yeast species (Saccharomycotina).
View Article and Find Full Text PDFAmChi7, an AmWRKY59 - Activated chitinase, was involved in the adaption to winter climate in Ammopiptanthusmongolicus.
Plant Physiol Biochem
December 2024
Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), National Ethnic Affairs Commission, Beijing, 100081, China; Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing, 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China. Electronic address:
Chitinases are enzymes that hydrolyze β-1,4-glycosidic bonds in chitin. Previous studies have shown that several chitinases accumulated significantly in A. mongolicus, suggesting that chitinases might participate in the adaptation to winter climate in Ammopiptanthus mongolicus.
View Article and Find Full Text PDFChitinases are important virulence factors in Vibrio for degrading the chitin-rich barrier of shrimp.
Int J Biol Macromol
December 2024
School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong 510006, PR China. Electronic address:
Vibrio-induced diseases pose a significant threat to shrimp aquaculture. While the mechanisms underlying Vibrio penetration of shrimp shells and the gastrointestinal tract remain unclear, this study implicates chitinases as critical virulence factors. Despite their inability to utilize chitin or shrimp shells as sole carbon and nitrogen sources, three major shrimp pathogens-V.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!