数字农科院2.0

Biocontrol Potential Of Purified Elicitor Protein Pebl1 Extracted Frombrevibacillus Laterosporusstraina60And Its Capacity In The Induction Of Defense Process Against Cucumber Aphid (Myzus Persicae) In Cucumber (Cucumis Sativus)

文献类型： 外文期刊

作者： Qiu, Dewen;Javed, Humayun;Javed, Khadija

作者机构：

关键词： Pebl1; Myzus Persicae; Aphid Resistance; Electrical Penetration Graph; Defense Pathways; Jasmonic Acid; Salicylic Acid; Ethylene

期刊名称： BIOLOGY-BASEL

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年卷期： 2020 年 9 卷 7 期

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摘要： The Cucumber aphid (Myzus persicae), a destructive cucumber aphid usually managed by chemical pesticides, is responsible for enormous annual agricultural losses. A protein elicitor, PeBL1, was investigated in the present work for its ability to induce a defense response againstM. persicaein cucumber. The rates of population growth (Intrinsic rate of increase) ofM. persicae(second and third generations) decreased with PeBL1-treated cucumber seedlings as compared to positive (water) and negative 70.58 mu g mL(-1)controls (50 mM Tris-HCl, pH 8.0). In an assay on host selection,M. persicaehad a preference for colonizing control plants as compared to the PeBL1-treated cucumber seedlings. The nymphal development time of the aphid was extended with the PeBL1-treated cucumber seedlings. Likewise, fecundity was reduced, with less offspring produced in the PeBL1-treated cucumber seedlings as compared to the positive (water) and negative 70.58 mu g mL(-1)controls (50 mM Tris-HCl, pH 8.0). The cucumber leaves treated with PeBL1 had a hazardous surface environment forM. persicae, caused by trichomes and wax formation. Jasmonic acid (JA), salicylic acid (SA), and ethylene (ET) levels were significantly higher, exhibiting significant accumulation in the PeBL1-treated cucumber seedlings. The following results showed that PeBL1 considerably altered the height of the cucumber plant and the surface structure of the leaves to minimizeM. persicaereproduction, and it prevented colonization. Defensive processes also included the activation of pathways (JA, SA, and ET). This study provides evidence of biocontrol for the use of PeBL1 in cucumber defense againstM. persicae.

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