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Occurrence and distribution of single or mixed infection of phytoplasma and spiroplasma causing corn stunting in Brazil
Tropical Plant Pathology ( IF 2.5 ) Pub Date : 2020-06-30 , DOI: 10.1007/s40858-020-00381-6
Sarah R. Galvão , Elizabeth O. Sabato , Ivan P. Bedendo

Maize bushy stunt and corn stunt have emerged among the most important diseases of maize in Brazil. To evaluate the single or dual presence of the phytoplasma and spiroplasma associated with corn stunting diseases, maize samples were collected across several locations in four Brazilian states. Multiplex PCR was performed for simultaneous detection of the bacteria. Eighty-nine out of 100 samples were positive with percentage values of 40%, 35%, and 25% for phytoplasma, spiroplasma, and mixed infections, respectively. Temperature may be an important driver of the prevalence of these mollicutes as phytoplasma prevailed in areas with mild temperatures and spiroplasma prevailed in warmer areas. These results extend knowledge of factors associated with corn stunting diseases, such as the potential role of temperature shaping the composition of the regional plant pathogenic populations.

中文翻译:

巴西植原体和螺旋体单一或混合感染引起玉米发育不良的发生和分布

玉米浓密特技和玉米特技已成为巴西最重要的玉米病害之一。为了评估与玉米矮化病相关的植原体和螺旋体的单一或双重存在,在巴西四个州的多个地点收集了玉米样品。进行多重PCR以同时检测细菌。100 个样本中有 89 个呈阳性,植原体、螺旋体和混合感染的百分比值分别为 40%、35% 和 25%。温度可能是这些软体动物流行的一个重要驱动因素,因为植原体在温和地区盛行,而螺旋体在温暖地区盛行。这些结果扩展了与玉米矮化病相关因素的知识,
更新日期:2020-06-30
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