First Report of <i>Paramyrothecium roridum</i> Causing Myrothecium Leaf Spot on Soybean in Africa

Haudenshield, J. S.; Pawlowski, Michelle L.; Miranda, Carrie; Hartman, G. L.

doi:10.1094/pdis-04-18-0624-pdn

Cited by 16 publications

(10 citation statements)

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“…States, Brazil, China, Korea, Pakistan, Ghana and Brazil (Tewari & Skoropad, 1977;Tulloch, 1972;Kim et al, 2003;Han et al, 2014, Li et al, 2014, Li et al, 2015Ben et al, 2015;Ben et al, 2016;Ben et al, 2017;Fujinawa et al, 2016;Garibaldi et al, 2016;Chen et al, 2018;Zhao et al, 2010;Alam et al, 2017;Haudenshield et al, 2018;Fish et al, 2012;Sun et al, 2020;Rennberger & Keinath, 2020). Among the several species, P. roridum is the frequently reported causal agent of these diseases.…”

Section: Discussionmentioning

confidence: 99%

Identification of Paramyrothecium foliicola causing crater rot in eggplant and its potential hosts under controlled conditions

Aumentado

Balendres

2021

Journal of Phytopathology

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Eggplant (Solanum melongena) is one of the most economically important vegetable crops cultivated and consumed globally. It is predominantly produced in Asia (94%) (Food and Agriculture Organization of the United Nations (2020)). Eggplant production is highly profitable and a ready source of income for small, resourcepoor farmers (Francisco et al., 2012). Eggplant is the most produced vegetable (by volume) in the Philippines, accounting for more than 30% of the country's total vegetable production (PSA (2020)).However, plant pathogens hamper its production by damaging the leaves, stems and roots, thus affecting its marketable fruit yield. The damage can range from 50% to 90% or eventually destroy the whole crop (Palo, 1938), resulting in losses.There are more than 30 pathogens associated with eggplant diseases (Tangonan, 1999), including those causing fruit rots, for example Colletotrichum gloeosporioides f. melongenae (Colletotrichum

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Section: Discussionmentioning

confidence: 99%

Identification of Paramyrothecium foliicola causing crater rot in eggplant and its potential hosts under controlled conditions

Aumentado

Balendres

2021

Journal of Phytopathology

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“…induced postharvest diseases in tropical fruits, cut flowers and a new type of leaf fall of para rubber [ 19 , 20 , 21 , 22 ]. Furthermore, Paramyrothecium breviseta was recently isolated from the leaf spot of the Arabica coffee [ 23 , 24 , 25 ]. To fill in the gap mentioned above as to increase the value of the coffee pulp biomass, the objectives of this research are to investigate types of biomass and losses during Arabica coffee processing and to serially extract the Arabica coffee pulp and analyse the chemical compositions.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Polyphenolic Fraction from Arabica Coffee Pulp and Its Antifungal Applications

Sangta

Wongkaew

Tangpao

et al. 2021

Plants

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Coffee pulp is one of the most underutilised by-products from coffee processing. For coffee growers, disposing of this agro-industrial biomass has become one of the most difficult challenges. This study utilised this potential biomass as raw material for polyphenolic antifungal agents. First, the proportion of biomass was obtained from the Arabica green bean processing. The yield of by-products was recorded, and the high-potency biomass was serially extracted with organic solvents for the polyphenol fraction. Quantification of the polyphenols was performed by High Performance Liquid Chromatography (HPLC), then further confirmed by mass spectrometry modes of the liquid chromatography–quadrupole time-of-flight (QTOF). Then, the fraction was used to test antifungal activities against Alternaria brassicicola, Pestalotiopsis sp. and Paramyrothecium breviseta. The results illustrated that caffeic acid and epigallocatechin gallate represented in the polyphenol fraction actively inhibited these fungi with an inhibitory concentration (IC50) of 0.09, 0.31 and 0.14, respectively. This study is also the first report on the alternative use of natural biocontrol agent of P. breviseta, the pathogen causing leaf spot in the Arabica coffee.

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“…(RLCS10, De Mers, 2022; Htun et al, 2022;Martinko et al, 2022;Xu et al, 2022), RLCS22-Paraphoma chrysanthemicola (Wang et al, 2022), and RLCS23-Paramyrothecium sp. (Haudenshield et al, 2018;Pinruan et al, 2022;Withee et al, 2022),. These isolates were more tolerant to the sub-lethal concentrations of either prothioconazole or isopyrazam used in this study.…”

Section: Implication Of Differential Sensitivity On Potential Soil-bo...mentioning

confidence: 99%

Sub-lethal fungicide concentrations both reduce and stimulate the growth rate of non-target soil fungi from a natural grassland

Cruz

Camenzind

Rillig

2022

Front. Environ. Sci.

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Conventional agriculture has relied extensively on the use of fungicides to prevent or control crop diseases. However, some fungicides, particularly broad-spectrum fungicides, not only eliminate target pathogens but also non-target and beneficial soil microbes. This scenario is not only limited to agricultural soil, but this may also potentially occur when neighboring environments are contaminated by fungicides through spray drift. Although concentrations may be sub-lethal, the chemicals may accumulate in the soil when used continuously resulting in more toxic effects. In this study, the effect on the colony extension rate of 31 filamentous soil saprobic fungi, initially isolated from a protected grassland ecosystem, were analyzed under fungicide treatment. These isolates were considered naive (no deliberate exposure), hence presumed to have not developed resistance. Two currently used fungicides with different modes of action were added to Potato Dextrose Agar at varying concentrations. Results showed a wide range of tolerance and sensitivity to isopyrazam and prothioconazole. Fungi belonging to the phylum Basidiomycota were most negatively affected by both fungicides. Phylum Mucoromycota were the most tolerant to prothioconazole while isolates belonging to phylum Ascomycota differed in their responses to both fungicides. Negative effects on the growth rate were more pronounced at higher concentrations except for a few isolates that were inhibited at 1 mg·L−1. A slightly positive effect was also observed in three of the isolates under fungicide treatment. Lastly, the negative impact of fungicides was not associated with the growth strategy of the fungi, whether fast growing or slow growing, rather it is isolate-specific and phylogenetically conserved. The results of this study demonstrate that co-occurring fungi differ in their sensitivity to fungicides even without prior exposure. This difference in sensitivity among co-occurring fungi may result in shifts in community composition of the soil fungal community to the detriment of the more sensitive isolates.

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First Report of Paramyrothecium roridum Causing Myrothecium Leaf Spot on Soybean in Africa

Cited by 16 publications

References 1 publication

Identification of Paramyrothecium foliicola causing crater rot in eggplant and its potential hosts under controlled conditions

Identification of Paramyrothecium foliicola causing crater rot in eggplant and its potential hosts under controlled conditions

Recovery of Polyphenolic Fraction from Arabica Coffee Pulp and Its Antifungal Applications

Sub-lethal fungicide concentrations both reduce and stimulate the growth rate of non-target soil fungi from a natural grassland

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