11/19/2023 0 Comments Needle blight 5s![]() ![]() ![]() The large number of pathogenic Fusarium species and frequently identified new pathogenic strains toward bananas suggest that many Fusarium species have the potential to develop pathogenicity toward bananas. Except for Foc and Fs, at least seven other Fusarium species have been linked to distinct banana diseases ( Jones, 1997 Du et al., 2017). Overall, to our knowledge, Fs has not been related to any banana growth disease yet. ABB plants with Panama disease in Southern Mexico, respectively, but no evidence robustly supported they could cause symptoms through root inoculation ( Maldonado-Bonilla et al., 2019). M7, were isolated from pseudo-stem and leaves of Musa spp. In another study, Fs and 10 other species were isolated from rot banana fruit, and only Fs isolates could not induce fruit rot after inoculation on healthy fruit ( Abd Murad et al., 2017). An Fs isolate was isolated from banana fruit in 2013, but its pathogenicity was untested ( Zeng et al., 2013). Several other studies suggested that different Fs strains could harbor distinct pathogenicity toward bananas. Fs could cause growth disease on sugarcane ( Bao et al., 2020 Yao et al., 2020) and oil palm ( Suwandi et al., 2018), and postharvest fruit rot on lady finger banana ( Riolo et al., 2020). FFSC is phylogenetically close to Fusarium oxysporum species complex (FOSC) which includes Foc ( Maryani et al., 2019). In this study, the pathogen Fusarium sacchari ( Fs) of the reported banana leaf blight (BLB) disease belongs to the Fusarium fujikuroi species complex (FFSC) which includes approximately 50 species ( O’Donnell et al., 2015). The genus Fusarium includes more than 20 monophyletic species complexes and several monotypic lineages involving many destructive plant pathogens ( O’Donnell et al., 2015). Immediate report of new diseases and understanding of their characteristics are essential for controlling their damage to the banana industry. cubense ( Foc) tropical race 4 ( Ploetz, 2006 Dong et al., 2013), and new diseases have been keeping emerging ( Fan et al., 2016 Du et al., 2017 Zhou et al., 2017). In recent years, the production of banana in China has been affected by several diseases, especially the catastrophic Panama disease (or Fusarium wilt) caused by Fusarium oxysporum f. China is one of the largest banana production countries, and most banana cultivars planted in China belong to the Cavendish subgroup of the AAA banana cultivar group ( Musa acuminata). ![]() This study not only reports the BLB caused by Fs, but also provides important information and clues for further understanding of the genome evolution among pathogenic Fusarium species.īananas ( Musa spp.) are one of the most important crops in the world that has been widely planted as staple food or fruit in many tropical and subtropical regions. oxysporum species complex (FOSC), including 30 involved in Fusarium pathogenicity/virulence. The FS66 genome also harbors widespread gene transfer on the core chromosomes putatively from F. Comparison between FS66 and other 11 Fusarium genomes identified tens to hundreds of genes specifically gained and lost in FS66, including some previously correlated with Fusarium pathogenicity. A total of 48 metabolite biosynthetic gene clusters including the fusaric acid biosynthesis gene cluster were predicted in silico in the FS66 genome. Based on transcriptome sequencing and ab initio gene annotation, a total of 14,486 protein-encoding genes and 418 non-coding RNAs were predicted. A 45.74 Mb genome of FS66 was acquired through de novo assembly using long-read sequencing data, and its contig N50 (1.97 Mb) is more than 10-fold larger than the previously available genome in the species. Phylogenetic analysis on two gene segments and the whole genome sequence identified the pathogen belonging to Fs and named as Fs str. Koch’s postulates were fulfilled after the re-isolation of the pathogen. From the symptomatic tissues collected in the field, a fungal isolate was obtained, which induced similar symptoms on healthy banana seedlings after inoculation. sacchari ( Fs) discovered in Guangdong, China. 2School of Computing, Clemson University, Clemson, SC, United Statesįusarium species have been identified as pathogens causing many different plant diseases, and here we report an emerging banana leaf blight (BLB) caused by F.1Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China.Yiping Cui 1 Bo Wu 2* Aitian Peng 1* Xiaobing Song 1 Xia Chen 1 ![]()
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