GROUP MEMBERS
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Muhammad Syafiq b. Mohd. Razib
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Nur Zafirah bt. Thalib
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DK. NurAzzimah bt. Pg. Shahipol Bahri
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Farah Farisha bt. Mustafa
Bacterial world has seen to consist three major classes i.e. Eubacteria, Spirochaetae and Myxobacteria. Myxobacterium is one of the remarkable bacteria that has special distinctive property of multicellular and macroscopic features that are called fruiting bodies. Unlike other motile prokaryotes, myxobacterium does not have visible organelles of locomotion however, some of them show gliding motility. This signifies the complex life cycles of myxobacterium that come along with the diverse physiological characteristics.
FRUITING MYXOBACTERIA
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Glide on solid surfaces and lyse other bacteria in order to obtain nutrient.
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Excrete extracellular hydrolytic enzymes that break down living or dead microbial cells or hydrolyse large and insoluble macromolecules such as nucleic acids, protein and polysaccharides.
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Secrete various antibiotics that aid the process of degrading and digesting other prey bacteria
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Two modes of motility(Martin,2007):
Move as an individual cell, controlled by the ‘A’ (adventurous) gene
- Cells generate propulsive force by extruding slime from nozzle-like organelles at the posterior pole.
- As the slime hydrates, the pressure generated pushed the cells forward.
Move as a swarm alongside with other cells which is controlled by the ‘S’ (social) gene.
- Type 4 pili extend from the forward pole, attach to fibrils secreted by nearby cells, and retract, pulling the cell forward (Wolgemuth et al., 2002).
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Produce extracellular slime and leave trail of slime behind as they glide across a solid surface
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Consecutive cells to follow the same direction of movement thus maintaining a ‘herd’ instinct while gliding (Perry et al., 2002)
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Manifests the high-cell density behavior of myxobacteria.
Slime trails of Chondromyces apiculatus.
(Myxobacteria.ahc.umn.edu, 2014)
Production of slime trail as Myxococcus fulvus glide on agar.
(Martinko & Clark, 2009)
Gliding motility of Myxococcus xanthus in culture media.
(Myxococcus xanthus fruiting body formation, 2014)
MOTILITY
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