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The effect of pathogenesis-related 10 (pr-10) gene on the progression of fusarium wilt in musa acuminata cv. Berangan
Nadiya Akmal Baharum1, Rofina Yasmin Othman2, Boon Chin Tan3, Kamilatulhusna Zaidi4, Norzulaani Khalid5, Nadiya Akmal Baharum6, Yusmin Mohd-Yusuf7.
PR-10 is a member of pathogenesis-related (PR) genes elicited by the plant’s defense mechanism during pathogen attack.
Elevated expression of PR-10 upon different pathogen invasions has been observed in many plant species suggesting
its role as an anti-bacterial, anti-viral and anti-fungal gene. However, the effect of PR-10 in mitigating the infection of
Fusarium oxysporum f. sp. cubense (Foc), the causal agent of Fusarium wilt in banana has not been reported. In this
study, the coding sequences of PR-10 gene isolated from Foc resistant Musa acuminata ssp. malaccensis (MaPR-10)
were integrated into a local Foc susceptible commercial banana cultivar, Berangan via co-cultivation of embryogenic
cell suspension and Agrobacterium tumefaciens. Out of 17 putative transgenic lines established, 11 of them positively
harbored MaPR-10. Among these, Line-19 plantlets showed the most rapid in-vitro propagation and successfully overexpressed the transgene. Following a nursery challenge experiment with a virulent Foc race 4 (CI HIR) isolate, about 30%
of Line-19 plants showed a one-week delay in disease progression when compared to the untransformed controls. From
the final evaluation performed in the 5th week-post-inoculation, the leaf symptoms index (LSI) and rhizome discoloration
index (RDI) of Line-19 was 3.4 and 6.1, respectively, indicating the disease had progressed. The findings of this study
enrich the current existing knowledge on the roles of PR-10 in combating fungal disease in plants.
Affiliation:
- University of Malaya, Malaysia
- University of Malaya, Malaysia
- University of Malaya, Malaysia
- University of Malaya, Malaysia
- University of Malaya, Malaysia
- Universiti Putra Malaysia, Malaysia
- University of Malaya, Malaysia
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MyJurnal (2021) |
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6 |
Immediacy Index
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0.000 |
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0 |
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Web of Science (SCIE - Science Citation Index Expanded) |
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JCR (1.009) |
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Q4 (Multidisciplinary Sciences) |
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JCI (0.15) |
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Scopus 2020 |
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CiteScore (1.4) |
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Q2 (Multidisciplinary) |
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SJR (0.251) |
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