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首页> 外文学位 >Disease suppression and systemic-acquired-resistance-induced in plants by compost-amended potting mixes, compost water extracts and no-tillage soil.
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Disease suppression and systemic-acquired-resistance-induced in plants by compost-amended potting mixes, compost water extracts and no-tillage soil.

机译：堆肥改良的盆栽混合物，堆肥水提取物和免耕土壤在植物中引起的疾病抑制和系统获得的抗性诱导。

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摘要

cucumber (Cucumis sativus 'Straight Eight') split-root technique was used to demonstrate that systemic acquired resistance (SAR) at least in part explained suppressiveness of compost mixes to Pythium root rot caused by Pythium ultimum and P. aphanidermatum. Root rot severity was reduced on roots in an infested peat mix paired with a compost mix. Anthracnose caused by Colletotrichum orbiculare was less severe in leaves of cucumber plants grown in the compost than in the peat mix. There was no difference in anthracnose severity among 'classic-induced' plants versus those grown in the compost mix. Compost-induced SAR was destroyed by autoclaving, and then restored by inoculation of the autoclaved mix with the natural compost (10%, v/v) or Pantoea agglomerans 278A. Efficacy of Pseudomonas putida 371 varied and Flavobacterium balustinum 299 failed to induce SAR. The foregoing suggests that compost-induced SAR in plants was biological in nature and responsible for suppression of anthracnose and Pythium root rot. Bacterial speck caused by Pseudomonas syringae pv. maculicola ES4326 (Psm) was less severe on Arabidopsis plants (Arabidopsis thaliana ecotype Columbia) grown in the compost than in the peat mix and Psm populations were lower in plants grown in the compost mix. Compost water extracts reduced bacterial speck severity and Psm populations on plants grown in the peat mix but not on those in the compost mix. A spray with salicylic acid (SA) reduced disease severity without affecting Psm populations. Apparently, disease suppression caused by sprays with compost extracts and SA was due to different mechanisms. Activity of compost extracts was heat stable and passed through a 0.2
机译：黄瓜（Cucumis sativus的“直八”）分裂根技术用于证明系统获得性抗性（SAR）至少部分解释了堆肥混合物对终极腐霉菌和南极腐霉菌引起的腐霉菌根腐病的抑制作用。受侵染的泥炭混合料与堆肥混合料在根部的根腐病严重程度降低。在堆肥中生长的黄瓜植株的叶片中，由炭疽菌引起的炭疽病的危害程度不如泥炭混合物中的炭疽病严重。在“经典诱导”植物中与混合肥料中生长的植物相比，炭疽病严重程度没有差异。堆肥诱导的SAR被高压灭菌破坏，然后通过高压灭菌的混合物与天然堆肥（10％，v / v）或Pantoea agloglomerans 278A接种恢复。恶臭假单胞菌371的功效各异，而Balustinum 299不能诱导SAR。前述表明，堆肥诱导的植物合成孔径雷达在本质上是生物学的，并能抑制炭疽病和腐霉菌根腐病。丁香假单胞菌PV引起的细菌斑点。在堆肥中生长的拟南芥植物（拟南芥生态型Columbia）上的maculicola ES4326（Psm）较泥炭混合物中的严重程度低，而在堆肥混合物中生长的植物中Psm种群数量较少。堆肥水提取物可以降低泥炭混合物中生长的植物上细菌斑点的严重程度和Psm种群，但不能降低堆肥混合物中的植物上的细菌斑点。喷洒水杨酸（SA）可以降低疾病严重程度，而不会影响Psm人群。显然，由堆肥提取物和SA喷洒引起的疾病抑制归因于不同的机制。堆肥提取物的活性是热稳定的，并通过0.2

著录项

  • 作者

    Zhang, Weizheng.;

  • 作者单位

    The Ohio State University.;

  • 授予单位 The Ohio State University.;
  • 学科 Agriculture Agronomy.;Agriculture Plant Pathology.;Biology Ecology.
  • 学位 Ph.D.
  • 年度 1997
  • 页码 116 p.
  • 总页数 116
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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