University of Florida - IFAS, Department of Plant Pathology, Fort Lauderdale Research and Education Center, 3205 College Avenue, Florida 33314
University of Florida - IFAS, Department of Plant Pathology, Fort Lauderdale Research and Education Center, 3205 College Avenue, Florida 33314.
Mycologia. 2014 Jul-Aug;106(4):698-707. doi: 10.3852/13-353. Epub 2014 Jun 4.
Serenomyces is a genus belonging to the family Phaeochoraceae, which is known to occur only in association with the plant family Arecaceae (palms). It is presumed to be one of the causes of a leaf disease referred to as either rachis blight or petiole blight, depending on the palm species affected. The fungus is not readily observed, with few reports in the literature; it cannot be readily isolated from tissue, with only one known instance of it being cultured on artificial media and has no DNA sequences deposited in GenBank. Over an 8 y period, leaves symptomatic for rachis or petiole blight were obtained from Florida and South Carolina, USA. The fungus was induced to produce ascospores, and single-spore isolates were obtained in culture and, in some instances, induced to produce ascospores in culture. Based on ascospores size and ITS sequencing, Serenomyces from Phoenix canariensis and P. dactylifera form one group, Serenomyces from Thrinax radiata form a second group and Serenomyces from Sabal palmetto form a third. All three groups are most similar morphologically to Serenomyces phoenicis. Due to the observed instability of Serenomyces in culture, we have suggestions regarding the storage of this fungus.
Serenomyces 是 Phaeochoraceae 科的一个属，已知仅与棕榈科植物有关。它被认为是一种叶病的原因之一，这种叶病根据受影响的棕榈物种的不同，分别被称为穗枯病或叶柄枯病。这种真菌不易观察到，文献中鲜有报道；它不易从组织中分离出来，只有一例在人工培养基上培养，并在 GenBank 中没有 DNA 序列。在 8 年的时间里，从美国佛罗里达州和南卡罗来纳州获得了出现穗枯病或叶柄枯病症状的叶片。诱导真菌产生子囊孢子，并在培养中获得单孢分离物，在某些情况下，诱导其在培养中产生子囊孢子。根据子囊孢子大小和 ITS 测序，来自 Canary Island date palm (Phoenix canariensis) 和 date palm (P. dactylifera) 的 Serenomyces 形成一组，来自 Sabal palmetto (Sabal palmetto) 的 Serenomyces 形成第二组，来自 Chinese windmill palm (Thrinax radiata) 的 Serenomyces 形成第三组。所有这三组在形态上与 Serenomyces phoenicis 最为相似。由于在培养中观察到 Serenomyces 的不稳定性，我们对这种真菌的储存提出了一些建议。
