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Assessment of virus eradication methods from infected in vitro-grown apricot cultures

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Abstract

In vitro culture of apricot cultivars ‘Qaysi’, ‘Shams’, and ‘Ordubad’, infected with Apple chlorotic leaf spot virus (ACLSV), Apple mosaic virus (ApMV), and Tobacco ring spot virus (TRSV) was used in this study. We investigated whether electrotherapy (0, 30, 40, 50, and 100 mA for 15 min), combining thermotherapy (38 °C for 7 days) with shoot tip culture, chemotherapy (ribavirin at 0, 25, 50, 75, and 100 mg L−1 for 30 days) with shoot-tip culture, or cryotherapy (incubating shoot-tips in plant vitrification solution-2 (PVS2) for 40 min) could effectively eradicate ACLSV, ApMV, and TRSV from virus-infected cultures. After treatments, shoot tips were cultured in vitro for 4 months before testing for the presence of viruses, and virus-free plants were grown in greenhouse for 18 months prior to retesting for the presence of the viruses. The highest virus elimination rates of 90–100% were obtained in combining thermotherapy with shoot tip culture (1.1–2.0 mm). Chemo (25 mg L−1)—and electro (40 mA)-treatments were also effective for producing virus-free planting material with frequencies of 75–100% and 40–60%, respectively. Cryotherapy treatment resulted in rates of 60–80%.The highest efficiency of virus eradication was detected in chemotherapy (58.6–93.3%), cryotherapy (60–80%), and thermotherapy (54–80%), respectively. According to our results, production of virus-free regenerants would be feasible in Prunus armeniaca L. providing proper therapeutic methods are adopted as regards the type of infecting virus and the host variety.

Key message

Apricot cultivars have been successfully treated with electro-, thermo-, chemo-, and cryotherapy for the first time with the eradication rates of 40–100% to produce virus-free regenerants.

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Data availability

The data that support the findings of this study are openly available under reasonable request. All data generated or analyzed during this study are included in this published article.

Abbreviations

ACLSV:

Apple chlorotic leafspot virus

ApMV:

Apple mosaic virus

ArMV:

Arabis mosaic virus

PDV:

Prune dwarf virus

PNRSV:

Prunus necrotic ringspot virus

PPV:

Plum pox virus

ToRSV:

Tomato ringspot virus

TRSV:

Tobacco ringspot virus

RT-PCR:

Reverse transcription- polymerase chain reaction

BAP:

6-Benzylaminopurine

Fe-EDDHA:

Ethylenediamine di-2-hydroxyphenyl acetate ferric

GA3 :

Gibberellic acid

IBA:

Indole-3-butyric acid

PVS2:

Plant vitrification solution-2

DMSO:

Dimethyl sulfoxide

NaCl:

Sodium chloride

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Funding

This study is supported by the Agricultural Biotechnology Research Institute of Iran to Reza Zarghami.

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Contributions

RZ and MN conceived the idea and designed the experiments. AZK conducted the research; LM, MN, and BA assisted in data analysis and inscribing the manuscript. All authors discussed the results and contributed to the final manuscript.

Corresponding authors

Correspondence to Reza Zarghami or Masoud Naderpour.

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Authors declare that they have no conflicting interests.

Additional information

Communicated by Ranjith Pathirana.

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Zare Khafri, A., Zarghami, R., Naderpour, M. et al. Assessment of virus eradication methods from infected in vitro-grown apricot cultures. Plant Cell Tiss Organ Cult 156, 52 (2024). https://doi.org/10.1007/s11240-023-02621-4

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  • DOI: https://doi.org/10.1007/s11240-023-02621-4

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