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Cryobiotechnology: A Double-Edged Sword for Obligate Plant Pathogens
Lei Zhao1,2, Minrui Wang1, Jingwei Li1
11 State Key Laboratory of Crop Stress Biology in Arid Region, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, P.R. China.
Plant Disease
|April 9, 2019
Summary
Shoot tip cryotherapy can eliminate plant pathogens but may not fully eradicate all obligate pathogens. Cryopreservation is essential for preserving these pathogens for research and applications.
Area of Science:
- Plant Pathology
- Cryobiology
- Biotechnology
Background:
- Pathogen-free stock plants are crucial for nurseries, germplasm exchange, and gene banks.
- Obligate plant pathogens (viruses, viroids) are intracellular parasites requiring living hosts for preservation, posing challenges for long-term storage.
- Cryopreservation offers a method for long-term preservation of these pathogens for research and applications.
Purpose of the Study:
- To review advances in cryopreservation techniques for both eradicating and preserving obligate plant pathogens.
- To highlight the dual role of cryobiotechnology in plant pathogen management.
Main Methods:
- Review of current cryopreservation techniques applied to plant pathogens.
- Synthesis of research on shoot tip cryotherapy for pathogen eradication.
- Analysis of cryopreservation efficacy for obligate pathogen long-term storage.
Main Results:
- Shoot tip cryotherapy can eradicate some obligate pathogens from vegetatively propagated plants.
- Cryotreatments are not always successful in eradicating pathogens, especially those infecting meristematic cells.
- Cryopreservation is effective for the long-term storage of obligate plant pathogens.
Conclusions:
- Cryobiotechnology presents a double-edged sword: effective for pathogen eradication and essential for pathogen preservation.
- Further research is needed to optimize cryopreservation techniques for complete eradication of all obligate plant pathogens.
- Effective cryopreservation methods are vital for maintaining pathogen collections for scientific research and biotechnological applications.
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