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首页> 外文期刊>Archives Of Phytopathology And Plant Protection >Propyl gallate, a free radical scavenger, counteracts the benefits of exogenously applied salicylic acid and aggravates the deleterious effects of the southern bean mosaic virus in Rhizobium-nodulated Phaseolus vulgaris plants
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Propyl gallate, a free radical scavenger, counteracts the benefits of exogenously applied salicylic acid and aggravates the deleterious effects of the southern bean mosaic virus in Rhizobium-nodulated Phaseolus vulgaris plants

机译：没食子酸丙酯，一种自由基清除剂，抵消了水杨酸外源施用的好处，并加剧了南方豆花叶病毒对根瘤菌的菜豆中的有害作用

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摘要

Infection of Rhizobium-nodulated Phaseolus vulgaris by the southern bean mosaic virus (SBMV) markedly decreased the growth and nodulation of plants. Exogenous applications of salicylic acid (SA) at concentrations ≥10 μM further decreased growth and nodulation of virus-infected (V) plants. Only SA concentration of 5 μM in the solution improved the growth, nodulation, chlorophyll concentration and the catabolism of ureide in leaves of V plants. The spray of leaves with 2 mM propyl gallate (+Pg) decreased growth, nodulation as well as the chlorophyll and leaf ureide concentrations in V plants, regardless of the concentration of SA at which plants were grown. Ultrastructural damages in leaf cells caused by SBMV were also enhanced in V+Pg plants. The massive proliferation of virus particles and the presence of virus crystalline arrays within symbiosomes of nodules in V+Pg plants were attributed to proliferation of branched plasmodesmata in leaf vascular-parenchyma cell walls that facilitated virus movement. Virus particles were never observed in leaf and nodule tissues of V plants not sprayed with Pg. Exogenous applications of SA hindered while Pg increased the symbiotic performance of H plants, pointing out the complexity to be addressed in breeding for virus resistance in Rhizobium-nodulated beans.
机译：南方豆花叶病毒（SBMV）感染根瘤菌的菜豆，明显降低了植物的生长和结瘤。水杨酸（SA）浓度≥10μM的外源应用进一步降低了生长和结节的病毒感染（V）植物。在溶液中只有5 µM的SA浓度改善了V植物叶片中的生长，结节，叶绿素浓度和脲的分解代谢。叶片喷洒2 mM没食子酸丙酯（+ Pg）会降低V植物中的生长，结节以及叶绿素和叶酰脲的浓度，而与植物生长的SA浓度无关。在V + Pg植物中，SBMV引起的叶细胞超微结构损伤也得到增强。 V + Pg植物中病毒颗粒的大量增殖和结节共生体中病毒晶体阵列的存在归因于叶脉壁实质细胞壁中支链胞浆的增殖，这促进了病毒的移动。在未喷洒Pg的V植物的叶片和根瘤组织中从未观察到病毒颗粒。 SA的外源应用受到阻碍，而Pg则增加了H植物的共生性能，指出在根瘤菌豆中抗病毒育种中要解决的复杂性。

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  • 来源
    《Archives Of Phytopathology And Plant Protection》 |2010年第16期|p.1643-1657|共15页
  • 作者

    Maria Luisa Izaguirre-Mayoral;

  • 作者单位

    Instituto Venezolano de Investigaciones Científicas, Centro de Microbiología y Biología Celular, Apdo Postal 20632, Caracas, 1020-A, Venezuela;

    Facultad de Agronomía, Laboratorio de Microbiología, Universidad Central de Venezuela, Apdo Postal 4579,;

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