Enhanced virulence of <i>Fusarium</i> species associated with spear rot of oil palm following recovery from osmotic stress

Suwandi, Suwandi; Akino, Seishi; Kondo, Norio

doi:10.1080/21501203.2017.1336497

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…FFSC is phylogenetically close to Fusarium oxysporum species complex (FOSC) which includes Foc ( Maryani et al, 2019 ). 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 ). Several other studies suggested that different Fs strains could harbor distinct pathogenicity toward bananas.…”

Section: Introductionmentioning

confidence: 99%

The Genome of Banana Leaf Blight Pathogen Fusarium sacchari str. FS66 Harbors Widespread Gene Transfer From Fusarium oxysporum

Cui

Peng

et al. 2021

Front. Plant Sci.

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Fusarium species have been identified as pathogens causing many different plant diseases, and here we report an emerging banana leaf blight (BLB) caused by F. sacchari (Fs) discovered in Guangdong, China. From the symptomatic tissues collected in the field, a fungal isolate was obtained, which induced similar symptoms on healthy banana seedlings after inoculation. Koch’s postulates were fulfilled after the re-isolation of the pathogen. Phylogenetic analysis on two gene segments and the whole genome sequence identified the pathogen belonging to Fs and named as Fs str. FS66. 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. 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 total of 48 metabolite biosynthetic gene clusters including the fusaric acid biosynthesis gene cluster were predicted in silico in the FS66 genome. 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. The FS66 genome also harbors widespread gene transfer on the core chromosomes putatively from F. oxysporum species complex (FOSC), including 30 involved in Fusarium pathogenicity/virulence. 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.

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Section: Introductionmentioning

confidence: 99%

The Genome of Banana Leaf Blight Pathogen Fusarium sacchari str. FS66 Harbors Widespread Gene Transfer From Fusarium oxysporum

Cui

Peng

et al. 2021

Front. Plant Sci.

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“…Pokkah boeng disease (PBD) is an airborne fungal disease caused by Fusarium fujikuroi species complex (FFSC) and is responsible for severe yield losses in susceptible varieties of sugarcane worldwide. The FFSC species F. sacchari is associated with both PBD and sugarcane wilting (Viswanathan et al, 2017) as well as fruit rot disease in bananas (Abd Murad et al, 2017), spear rot of oil palm (Suwandi et al, 2018), and even mycotic keratitis among sugarcane farmers (Bansal et al, 2016). The FFSC species F. andiyazi has been reported to cause wheat head blight (Wang et al, 2015), ear rot of maize (Bandara et al, 2017), and stalk rot of sorghum (Zhang et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Virome Identification and Characterization of Fusarium sacchari and F. andiyazi: Causative Agents of Pokkah Boeng Disease in Sugarcane

et al. 2020

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Frontiers in Microbiology | www.frontiersin.org February 2020 | Volume 11 | Article 240 Yao et al. Virome Identification and Characterization of Fusarium spp.was observed and the characterization of the four-segment dsRNA chrysovirus was performed with aid of electron microscopy and analysis of the encapsidated RNAs. These findings provide insight into the diversity and spectrum of mycoviruses in PBD pathogens and should be useful for exploring agents to control the disease.

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“…(Paccanaro et al 2017), and also in palm oil -Fusarium spp. (Suwandi et al 2018), secreted CWDEs increased pathogenicity and aggressiveness of phytopathogens.…”

Section: Discussionmentioning

confidence: 99%

Journal of Plant Protection Research

Khaledi,

Hassani

2021

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The seed is one of the most important inputs of agricultural products and its quality and health can be affected by seed-borne fungi. Seed-borne fungal pathogens are a major threat to black cumin production and cause considerable yield losses every year worldwide. The aim of this study was to identify seed-borne fungi, the effects of natural fungal infected seeds on some seed quality indicators, and also to investigate cell wall degrading enzymes (CWDEs), pathogenicity and aggressiveness of the isolates obtained from seeds. The constituents of essential oils (EOs) from seeds of Iranian and Syrian black cumin populations were identified and their effect on [isolated] seed-borne Fusarium isolates. A total of 17 isolates were identified based on morphological and molecular characteristics of Fusarium oxysporum and F. solani species. The results of the standard germination test showed that there was a significant difference between the studied seed populations in the germination and vigor indices. Our results indicated that most of the identified isolates were in the seed coat, while a few isolates of F. oxysporum were located in embryos. The results of the pathogenicity test showed that about 42% of the isolates were pathogenic and 58% of the isolates were non-pathogenic. Different levels of pathogenicity and aggressiveness were observed for various isolates of Fusarium species. All Fusarium isolates were not capable of producing CWDEs as pathogenicity factors. Analyzing the activity of CWDEs, including cellulase, pectinase, xylanase and lipase produced by the Fusarium isolates, revealed that activity levels of CWDEs are positive and are correlated with variations in pathogenicity and aggressiveness of seed-borne fungal isolates on seeds. The EOs were identified by gas chromatography-mass spectrometry and the major constituents were identified as ρ-cymene, trans-anethole, thymoquinone, limonene, carvacrol and α-thujene. The results showed that the compounds ρ-cymene, limonene, carvacrol, thymoquinone and transanethole had antifungal effects against F. oxysporum isolate. It seems that the percentage of carvacrol and limonene composition in the EOs components can affect the presence of the seed-borne Fusarium. This is the first report on the effect of EO compositions of black cumin seed populations on seed-borne Fusarium isolated from the same seeds. The findings of this research showed that the amounts and types of constituents of EOs of black cumin seed populations are different and they can affect the abundance of seed-borne fungi and their level of pathogenicity and aggressiveness.

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Enhanced virulence of Fusarium species associated with spear rot of oil palm following recovery from osmotic stress

Cited by 5 publications

References 25 publications

The Genome of Banana Leaf Blight Pathogen Fusarium sacchari str. FS66 Harbors Widespread Gene Transfer From Fusarium oxysporum

The Genome of Banana Leaf Blight Pathogen Fusarium sacchari str. FS66 Harbors Widespread Gene Transfer From Fusarium oxysporum

Virome Identification and Characterization of Fusarium sacchari and F. andiyazi: Causative Agents of Pokkah Boeng Disease in Sugarcane

Journal of Plant Protection Research

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