Yeast Diversity Associated with the Phylloplane of Corn Plants Cultivated in Thailand

Into, Parichat; Pontes, Ana Paula Munhen de; Sampaio, José Paulo; Limtong, Savitree

doi:10.3390/microorganisms8010080

Cited by 36 publications

(27 citation statements)

References 60 publications

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“…The urban-associated biomarkers were dominated by the species Dekkera bruxellensis, which are commonly isolated from fermented food such as wine, beer, feta cheese and sour dough [ 38 – 40 ]. In contrast, Hannaella sinensis is commonly isolated from plants and soil [ 41 , 42 ]. The staple diet of the rural South African population primarily consists of a corn-based porridge (called ‘pap’).…”

Section: Discussionmentioning

confidence: 99%

The gut mycobiota of rural and urban individuals is shaped by geography

et al. 2020

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Background: Understanding the structure and drivers of gut microbiota remains a major ecological endeavour. Recent studies have shown that several factors including diet, lifestyle and geography may substantially shape the human gut microbiota. However, most of these studies have focused on the more abundant bacterial component and comparatively less is known regarding fungi in the human gut. This knowledge deficit is especially true for rural and urban African populations. Therefore, we assessed the structure and drivers of rural and urban gut mycobiota. Results: Our participants (n = 100) were balanced by geography and sex. The mycobiota of these geographically separated cohorts was characterized using amplicon analysis of the Internal Transcribed Spacer (ITS) gene. We further assessed biomarker species specific to rural and urban cohorts. In addition to phyla which have been shown to be ubiquitous constituents of gut microbiota, Pichia were key constituents of the mycobiota. We found that geographic location was a major driver of gut mycobiota. Other factors such as smoking where also determined gut mycobiota albeit to a lower extent, as explained by the small proportion of total variation. Linear discriminant and the linear discriminant analysis effect size analysis revealed several distinct urban and rural biomarkers. Conclusions: Together, our analysis reveals distinct community structure in urban and rural South African individuals. Geography was shown to be a key driver of rural and urban gut mycobiota.

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Section: Discussionmentioning

confidence: 99%

The gut mycobiota of rural and urban individuals is shaped by geography

et al. 2020

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“…Effective antagonistic yeast strains were obtained by screening yeast strains isolated from the surface and tissue of leaves of economic crops in Thailand. These yeast strains used in the present study were obtained from our previous studies on the diversity of yeasts in the phylloplane and tissue of economic crops (rice, corn and sugarcane) leaves in Thailand by culture-depend method and some of them revealed antagonistic activities against plant pathogens [18][19][20]. In most cases, yeasts showing potential for controlling of fungal pathogens of one kind of postharvest fruit were obtained from the other fruits or the other sources.…”

Section: Discussionmentioning

confidence: 99%

“…The 307 yeast strains used in this studied were isolated from leaves of economic plants (rice, corn and sugarcane) in Thailand [18][19][20] and consisted of 124 strains of 32 ascomycetous species and 178 strains of 15 basidiomycetous species (Table S1). To obtain active cultures, yeasts were grown on yeast extract-malt extract agar (YM, 3 g/L yeast extract, 3 g/L malt extract, 5 g/L peptone, 10 g/L glucose and 15 g/L agar) at 25 • C for 48 h.…”

Section: Microorganisms and Cultivationmentioning

confidence: 99%

Biological Control of Fruit Rot and Anthracnose of Postharvest Mango by Antagonistic Yeasts from Economic Crops Leaves

2020

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To select antagonistic yeasts for the control of fruit rot caused by Lasiodiplodia theobromae and anthracnose caused by Colletotrichum gloeosporioides in postharvest mango fruit, 307 yeast strains isolated from plant leaves were evaluated for their antagonistic activities against these two fungal pathogens in vitro. Torulaspora indica DMKU-RP31, T. indica DMKU-RP35 and Pseudozyma hubeiensis YE-21 were found to inhibit the growth of L. theobromae whereas only Papiliotrema aspenensis DMKU-SP67 inhibited the growth of C. gloeosporioides. Antagonistic mechanisms of these four antagonistic yeasts in vitro consisted of the production of antifungal volatile organic compounds (VOCs), biofilm formation and siderophore production. T. indica DMKU-RP35 was the most effective strain in controlling fruit rot on postharvest mango fruits. Its action was comparable to that of the fungicide, benomyl, reducing the disease severity by 82.4%, whereas benomyl revealed 87.5% reduction. P. aspenensis DMKU-SP67 reduced anthracnose severity by 94.1%, which was comparable to that of using benomyl (93.9%). The antifungal VOCs produced by these yeast strains also reduced the severity of these diseases on postharvest mango fruits but at lower rates than using yeast cells. Therefore, these antagonistic yeasts have the potential for use as biological control agents for the control of fruit rot and anthracnose diseases.

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“…The urban-associated biomarkers were dominated by the species Dekkera bruxellensis, which are commonly isolated from fermented food such as wine, beer, feta cheese and sour dough [39][40][41]. In contrast, Hannaella sinensis is commonly isolated from plants and soil [42,43]. The staple diet of the rural South African population primarily consists of a corn-based porridge (called 'pap').…”

Section: Discussionmentioning

confidence: 99%

The gut microbiota of rural and urban individuals is shaped by geography and lifestyle

Kabwe

Vikram

Mulaudzi

et al. 2020

Preprint

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Background Understanding the structure and drivers of gut microbiota remains a major ecological endeavour. Recent studies have shown that several factors including diet, lifestyle and geography may substantially shape the human gut microbiota. However, most of these studies have focused on the more abundant bacterial component and comparatively less is known regarding fungi in the human gut. This knowledge deficit is especially true for rural and urban African populations. Therefore, we assessed the structure and drivers of rural and urban gut mycobiota. Results Our participants (n=100) were balanced by geography and sex. The mycobiota of these geographically separated cohorts was characterized using amplicon analysis of the Internal Transcribed Spacer (ITS) gene. We further assessed biomarker species specific to rural and urban cohorts. In addition to phyla which have been shown to be ubiquitous constituents of gut microbiota, Pichia were key constituents of the mycobiota. We found that several factors including geographic location and lifestyle factors such as the smoking status were major drivers of gut mycobiota. Linear discriminant and the linear discriminant analysis effect size analysis revealed several distinct urban and rural biomarkers. Conclusions Together, our analysis reveals distinct community structure in urban and rural South African individuals. Geography and lifestyle related factors were shown to be key drivers of rural and urban gut microbiota.

show abstract

Yeast Diversity Associated with the Phylloplane of Corn Plants Cultivated in Thailand

Cited by 36 publications

References 60 publications

The gut mycobiota of rural and urban individuals is shaped by geography

The gut mycobiota of rural and urban individuals is shaped by geography

Biological Control of Fruit Rot and Anthracnose of Postharvest Mango by Antagonistic Yeasts from Economic Crops Leaves

The gut microbiota of rural and urban individuals is shaped by geography and lifestyle

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