Spots have been observed on petioles and along the midrib and vein of leaves from saplings and shrubs of Erythrina variegata in a Brazilian municipality in the state of Minas Gerais. An acervular fungus resembling Colletotrichum spp. was consistently observed associated with these spots. The aim of this study was to identify the fungus associated with E. variegata employing morphological characteristics combined with sequences of the nuclear genes encoding CAL, GAPDH, ITS and ACT. The aetiological agent was identified as Colletotrichum siamense, a species from the Colletotrichum gloeosporioides complex. Furthermore, this is the first report of C. siamense causing leaf spot on E. variegata in Brazil or elsewhere.

中文翻译：

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Erythrina variegata是巴西Colletotrichum siamense的新寄主物种

在米纳斯吉拉斯州巴西的一个城市中，在叶柄和中脉和叶脉的中脉上发现了斑点，这些叶片来自Erythrina variegata的幼树和灌木。子宫颈真菌，类似于炭疽菌。始终观察到与这些斑点有关。这项研究的目的是利用形态学特征结合编码CAL，GAPDH，ITS和ACT的核基因序列来鉴定与杂色大肠杆菌相关的真菌。病原被鉴定为暹罗炭疽菌（Colletotrichum siamense），是一种来自Colletotrichum gloeosporioides复合体的物种。此外，这是C. siamense在巴西或其他地方的E. variegata上引起叶斑。