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In vitro studies of mycoplasma-like organisms
Abstract:
We determined whether the western X mycoplasma (WXM) isolated from Colladonus montanus could be maintained in vitro by ultrathin sections or by assay of infectivity. Large spherical or small electron-dense bodies like those found in intact infected cells were observed in some media. Infectivity of WXM can be maintained for 28 days in cultured salivary glands in a newly developed medium, and for 281 days (seven passages) in modified AcTc, for 231 days (eight passages) in modified PC, 107 days (one passage) in spiroplasma medium, and 52 days (one passage) in modified GITC medium extracts. However, there is no evidence that WXM multiplied in any medium.
Insights
Western X mycoplasma (WXM) infectivity can be maintained in vitro for extended periods using various culture media. However, evidence suggests WXM does not multiply in these tested media.
Area of Science:
- Phytopathology
- Microbiology
- Invertebrate Pathology
Background:
- The Western X mycoplasma (WXM) is an important plant pathogen affecting various crops.
- Understanding WXM's in vitro survival is crucial for disease management and research.
- Previous studies have explored WXM maintenance, but optimal conditions remain under investigation.
Purpose of the Study:
- To evaluate the in vitro maintenance of WXM infectivity using different culture media and methods.
- To determine the duration of WXM infectivity and assess potential multiplication in vitro.
- To identify suitable media for preserving WXM viability for experimental purposes.
Main Methods:
- WXM was isolated from infected Colladonus montanus.
- In vitro maintenance was assessed using ultrathin sections and infectivity assays.
- WXM infectivity was tested in various media, including a newly developed medium, modified AcTc, modified PC, spiroplasma medium, and modified GITC medium extracts.
- Cultures were monitored for infectivity over extended periods.
Main Results:
- Large spherical or small electron-dense bodies, similar to those in infected cells, were observed in some media.
- WXM infectivity was maintained for up to 281 days (seven passages) in modified AcTc medium.
- Infectivity was also maintained for 231 days (eight passages) in modified PC medium.
- Shorter maintenance periods were observed in spiroplasma medium (107 days) and modified GITC medium (52 days).
- No evidence of WXM multiplication was found in any of the tested media.
Conclusions:
- WXM infectivity can be successfully maintained in vitro for significant durations using specific culture media.
- Modified AcTc and modified PC media demonstrated the longest WXM infectivity maintenance periods.
- While WXM can be maintained, it does not appear to multiply under the tested in vitro conditions.
- These findings provide valuable insights for WXM research and the development of disease control strategies.