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Potato spindle tuber viroid
A V Kochetov1, A Y Pronozin2, N V Shatskaya2
1Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Novosibirsk State University, Novosibirsk, Russia.
Vavilovskii Zhurnal Genetiki I Selektsii
|December 13, 2021
Summary
Potato spindle tuber viroid (PSTVd) genetics and its pathological effects are reviewed. PSTVd
Area of Science:
- Phytopathology
- Molecular Evolution
- Viroid Genetics
Background:
- Viroids are small, non-coding RNA molecules infecting plants.
- Potato spindle tuber viroid (PSTVd) is a well-studied viroid with significant impact on host plants.
- PSTVd's genomic RNA structure dictates its interactions with host factors.
Purpose of the Study:
- To review recent literature on PSTVd genetics.
- To elucidate mechanisms of PSTVd-induced pathogenesis.
- To explore potential for developing resistant cultivars.
Main Methods:
- Literature review of PSTVd genetics and host interactions.
- Analysis of PSTVd replication fidelity and mutation rates.
- Examination of RNA interference mechanisms in PSTVd pathogenesis.
Main Results:
- PSTVd RNA structure is critical for replication, transport, and symptom severity.
- PSTVd replication generates a diverse population of mutated genomic RNAs.
- Disease symptoms are often mediated by RNA interference affecting host gene expression.
Conclusions:
- PSTVd pathogenesis involves complex interactions between viroid RNA and host cellular factors.
- RNA interference plays a key role in PSTVd-induced symptoms.
- Understanding these interactions can lead to genetic strategies for crop resistance.
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