Occurrence of Anthracnose on Highbush Blueberry Caused byColletotrichumSpecies in Korea

Abstract

A total of 82 isolates of Colletotrichum species were obtained from anthracnose symptoms of highbush blueberry trees grown in the Gochang area of Korea during a disease survey in 2008. Out of the isolates, 75 were identified as Colletotrichum gloeosporioides and the others as C. acutatum based on their morphological and cultural characteristics. Twenty six of C. gloeosporioides isolates produced their teleomorph Glomerella cingulata in PDA culture. Three isolates of each C. gloeosporioides and C. acutatum caused anthracnose symptoms on the leaves by artificial inoculation, which were similar to what was observed in the orchards. Previously in Korea, only C. gloeosporioides has been reported as causing anthracnose in blueberries. This is the first report that C. acutatum causes anthracnose in the highbush blueberry in Korea.

New report ofColletotrichum gloeosporioidescausing anthracnose ofPisonia albain India

“…Leaves inoculated with mycelial discs showed severe symptoms very early compared to the leaves inoculated with spore suspensions in which even the onset of symptom was not recorded. Further, mycelial discs of the pathogen induced the symptoms on the wounded site readily (Figure 1(d)) than unwounded site as wounding promotes anthracnose lesion development (Kim et al 2009). Koch's postulates were confirmed by re-isolating the same fungus from symptom-bearing leaves.…”

Keberadaan Mikovirus Berdasarkan Deteksi Berbasis RNA pada Colletotrichum Hipovirulen

“…Analisis Grup A secara umum memiliki koloni berwarna jingga dengan tekstur halus, tepian siliat, elevasi timbul, dan opasitas buram. Konidia dari grup A memiliki kemiripan seperti C. gloeosporioides yaitu uniseluler, hialin, lurus, berbentuk silindris dan bulat di ujung atau sedikit sempit di salah satu ujung (Kim et al 2009) serta koloninya berwarna jingga pucat hingga pink-jingga (Weir et al 2012). Grup A meliputi isolat dengan kode C2-C13, 179C, dan B1.16.…”

“…Grup C secara umum memiliki warna koloni putih dengan bentuk koloni bundar, tepian siliat, tekstur kasar, elevasi timbul, dan opasitas buram. Karakteristik grup C cenderung mirip pada C. acutatum dengan konidia bersifat uniseluler, hialin, lurus, berbentuk fusiform dan meruncing di setiap ujungnya (Kim et al 2009) serta warna koloni krem hingga putih (Abera et al 2016). Grup C meliputi B1.4, B1.11, B1.14, B1.17, K1.2, K1.3, K1.5, K1.6, dan K1.7.…”

Identification of Colletotrichum Species Associated with Blueberry Anthracnose in Sichuan, China

“…The increased cultivation of blueberries drastically promotes severe infectious diseases that cause significant economic losses to the blueberry industry. Among these diseases, blueberry anthracnose has been considered one of the most serious diseases causing economic damage in North America [ 6 ], Japan [ 7 ], Spain [ 8 ], South Korea [ 9 ], China [ 10 ], and other countries worldwide. Due to the high humidity conditions in Sichuan Province, the incidence of anthracnose in major blueberry regions usually reaches 30%, and the disease worsens with tree age, resulting in severe deciduous leaves or dead trees, with yields decreasing by 10~15% in some severe regions.…”

“…Previous reports have shown that blueberry anthracnose is mainly caused by C. acutatum J.H. Simmonds [ 8 , 9 , 11 ] and C. gloeosporioides Penz., as based on morphological identification [ 9 , 12 , 13 ]. In 2015, C. karstii was also recognized as a pathogen causing blueberry anthracnose in Brazil [ 14 ].…”