Genetic Variation of Strawberry Fusarium Wilt Pathogen Population in Korea

Abstract

Strawberries are a popular economic crop, and one of the major plantations and exporting countries is Korea in the world. The Fusarium oxysporum species complex (FOSC) is a soil-borne pathogen with genetic diversity, resulting in wilt disease in various crops. In Korea, strawberries wilt disease was first reported in the 1980s due to the infection of FOSC, causing significant economic damage every year. The causal agent, F. oxysporum f. sp. fragariae , is a soil-borne pathogen with a characteristic of FOSC that is difficult to control chemically and mutates easily. This study obtained genetic polymorphism information that was based on AFLP, of F. oxysporum f. sp. fragariae 91 strains, which were isolated from strawberry cultivation sites in Gyeongsangnam-do and Chungcheongnam-do, and compared strains information, which was the isolated location, host variety, response to chemical fungicide, and antagonistic bacteria, and mycelium phenotype. As a result, AFLP phylogeny found that two groups were mainly present, and group B was present at a high frequency in Gyeongsangnam-do. Group B proved less sensitive to tebuconazole than group A through Student’s t-test. In addition, the fractions pattern of AFLP was calculated by comparing the strain information using PCA and PERMANOVA, and the main criteria were separated localization and strawberry varieties (PERMANOVA; p < 0.05). And tebuconazole was different with weak confidence (PERMANOVA; p < 0.10). This study suggests that the F. oxysporum f. sp. fragariae should be continuously monitored and managed, including group B, which is less chemically effective.

Chlorophyll Fluorescence Imaging for Early Detection of Drought and Heat Stress in Strawberry Plants

“…Therefore, the consumption of strawberries, either fresh or processed, continues to significantly increase, with the market surging every year [ 2 , 3 , 4 , 5 ]. Strawberry is one of the most widely grown crops in South Korea, which is a major strawberry-producing country alongside Poland, Mexico, Egypt, Turkey, Spain, and the United States [ 6 , 7 ]. Based on the Korean Statistical Information Service (KOSIS), domestic strawberries generated approximately KRW 1.3 trillion in 2018 [ 8 ].…”

Detection of Pathogenic Fungi Causing Root and Crown Rot Diseases in Strawberry Fragaria ananassa Duch

“…fusarium spp is IOP Publishing doi:10.1088/1755-1315/1262/3/032035 2 one of the most prevalent and economically damaging fungal pathogens affecting various plant families, including strawberries. it is a widespread soil-borne fungus that causes plant diseases [5]. Rhizoctonia solani is another important pathogen responsible for seedling damping-off and root rot in strawberries [6].…”

Fusarium Wilt Invasion Results in a Strong Impact on Strawberry Microbiomes

“…Strawberries ( Fragaria × ananassa ) are a widely cultivated fruit with high nutritional and economic value [ 13 , 14 ]. Because of the continuous expansion of strawberry plantation areas and the use of long-term continuous cropping, strawberries have become susceptible to several diseases, such as Fusarium wilt [ 15 , 16 ]. Fusarium wilt is caused by a soil-borne pathogen called Fusarium oxysporum , which primarily infects plants such as strawberry, cucumber, tomato, banana, and celery; has a wide range of hosts; and results in major crop losses in fruits and vegetables worldwide [ 17 , 18 , 19 , 20 , 21 ].…”