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Susceptibility of cork oak ( Quercus suber ) to canker disease caused by Diplodia corticola : when time is of the essence
New forests ( IF 2.2 ) Pub Date : 2021-01-06 , DOI: 10.1007/s11056-020-09829-8
Emigdio Jordán Muñoz-Adalia , Carlos Colinas

Cork is a renewable resource mainly produced in Mediterranean countries thanks to sustainable management of cork oak (Quercus suber) stands. The infection caused by the ascomycete fungus Diplodia corticola promotes the occurrence of cankers that reduce cork regeneration devaluating the stands. In this article, we tested the hypothesis that the trees are susceptible to the fungus during a limited period of time after debarking. Five mature cork oaks were subjected to eight reiterative inoculations of D. corticola (from the day of debarking to 35 days after) in an experimental plot located in Catalonia (North-Eastern Spain). The time until first symptom appearance as well as the severity of necrosis were assessed for each inoculation treatment. A generalized linear mixed model was fitted showing that the time of symptoms appearance varied among the assayed times of inoculation. In contrast to the foresters-assumed idea of high susceptibility immediately after debarking, earlier inoculations were neither related to higher severity nor to earlier occurrence of canker. This study represents the first approach to this etiological issue in cork oak canker pathosystem.



中文翻译:

软木栎(Dierdia corticola)引起的溃疡病的易感性:时间是至关重要的。

软木是一种可再生资源,主要由于对软木栎(栎栎)林地的可持续管理而主要在地中海国家生产。子囊真菌Diplodia corticola引起的感染促进了溃疡病的发生,减少了软木的再生,从而降低了林分。在本文中,我们测试了在剥皮后的有限时间内树木对真菌敏感的假设。对五棵成熟的软木橡树进行了八次重复接种D. corticola(从剥皮当天到之后的35天)位于加泰罗尼亚(西班牙东北部)的一个实验区。对于每种接种治疗,评估直到出现首次症状的时间以及坏死的严重程度。拟合的广义线性混合模型显示症状出现的时间在所检测的接种时间之间变化。与剥皮后立即被森林人假定的高度易感性的想法形成对比,早期接种既与更高的严重程度无关,也与早期发生的溃疡无关。这项研究代表了软木橡树溃疡病发病机制中这一病因问题的第一种方法。

更新日期:2021-01-06
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