| Induction of Tolerance to Fusarium Wilt and Defense-Related Mechanisms in the Plantlets of Susceptible Berangan Banana Pre-lnoculated with Pseudomonas sp. （UPMP3） and Burkholderia sp. （UPMB3） |
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| 作者姓名： | Elya Masya Mohd Fishal Sariah Meon Wong Mui Yun |
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| 作者单位： | Laboratory of Food Crops and Floriculture, Institute of Tropical Agriculture, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia |
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| 基金项目： | Acknowledgements The author would like to thank the Research University Grants （RUGS 91009）, Malaysia, for financing this research. |
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| 摘 要： | This study is aimed at assessing the ability of two endophytic bacteria originally isolated from healthy oil palm roots, Pseudomonas sp. （UPMP3） and Burkholderia sp. （UPMB3） to induce resistance in susceptible Berangan banana against Fusarium oxysporum race 4 （FocR4）. Increased accumulation of resistance-related enzymes such as peroxidase （PO）, phenylalanine ammonia lyase （PAL）, lignithioglycolic acid （LTGA）, and pathogenesis-related （PR） proteins （ehitinase and β-1,3-glucanase） has been observed in plantlets treated with endophytic bacteria UPMP3 and UPMB3 singly or as mixture under glasshouse conditions. Pre-inoculation of banana plantlets with UPMP3 showed a significant reduction in Fusarium wilt incidence 72 d after challenged inoculation with FocR4. UPMB3 was less effective in suppressing Fusarium wilt compared to UPMP3, whereas, the mixture of both endophytes showed an intermediate effect. Based on these results, it is concluded that UPMP3 could be a promising biological control agent that can trigger resistance against Fusarium wilt in susceptible Berangan banana.
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| 关 键 词： | 香蕉试管苗 抗枯萎病 诱导性 假单胞菌 鼻疽 苯丙氨酸解氨酶 机制 国防 |
| 收稿时间： | 16 November 2009 |
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