2018 年 2018 巻 65 号 p. 47-52
Fruit reddish tear stain of Citrus flaviculpus ‘Syonan Gold’ has currently become the major disorder in Kanagawa, Japan. From the symptom, a Colletotrichum sp. was constantly isolated. Our pathogenicity test showed that this fungus produced the original symptom, and we thus determined as the causal agent of the disease. On the basis of morphological characteristics and molecular analyses of the actin, calmodulin, chitin synthase, glyceraldehyde-3-phosphate dehydrogenase, rDNA-ITS and β-tubulin regions, the pathogen was identified as Colletotrichum gloeosporioides sensu stricto.