Fujian Key Laboratory of Plant Virology, Institute of Plant Virology, Fujian Agricultural and Forestry University, Fuzhou, Fujian 350002, China; Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fujian Agricultural and Forestry University, Fuzhou, Fujian 350002, China.
Plant Pathology Group, Institute of Integrative Biology, ETH Zurich, 8092 Zurich, Switzerland.
Fungal Genet Biol. 2018 Jun;115:33-40. doi: 10.1016/j.fgb.2018.04.002. Epub 2018 Apr 4.
We combined a common garden experimental design with digital image analysis to determine how melanization responds to temperature and fungicide stress in 126 strains of Rhynchosporium commune sampled from nine global field populations. We found that different temperatures and fungicide stress significantly affected the degree of melanization. The nine field populations showed similar patterns in response to the different temperatures. Significant correlations were found between the degree of melanization and the local environment, including mean annual temperature, latitude, and relative humidity, suggesting that melanization is a locally adaptive trait. We also found that melanization is positively correlated with both virulence and fungicide resistance. These findings suggest that melanization has pleiotropic effects in Rhynchosporium commune.
我们结合了一个常见的园林实验设计和数字图像分析，以确定在从九个全球田间种群中采样的 126 株 Rhynchosporium commune 中，黑色素沉着如何响应温度和杀菌剂胁迫。我们发现，不同的温度和杀菌剂胁迫显著影响黑色素沉着的程度。九个田间种群对不同温度的反应表现出相似的模式。黑色素沉着的程度与包括年平均温度、纬度和相对湿度在内的局部环境之间存在显著相关性，表明黑色素沉着是一种局部适应性特征。我们还发现黑色素沉着与毒力和杀菌剂抗性呈正相关。这些发现表明黑色素沉着在 Rhynchosporium commune 中具有多效性。
