Spatial and seasonal influences on culturable endophytic mycobiota associated with different tissues of Eugenia jambolana Lam. and their antibacterial activity against MDR strains

Yadav, Mayank; Yadav, Amita; Kumar, Sandeep; Yadav, Jaya Parkash

doi:10.1186/s12866-016-0664-0

Cited by 32 publications

(16 citation statements)

References 62 publications

(70 reference statements)

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“…The absence of seasonality was also observed by Yadav et al (2016) in their study on endophytic fungi associated with Eugenia jambolana Lam.…”

Section: Discussionsupporting

confidence: 55%

“…Different selection pressures, as observed during the different seasons in this study, are known to play a role in endophyte species composition (Yadav et al, 2016). Seasonality observed in fungal endophyte communities can result from the relationships these fungi have with plants during increased plant productivity in the environment (Giauque and Hawkes, 2016).…”

Section: Discussionmentioning

confidence: 78%

“…In the current study, seasonal specificity was clearly observed, with higher endofungal diversity estimates in the flowering season than in the dry season. In their study of seasonal influences on Indian endophytic mycobiota, Yadav et al (2016) found species of genera Aspergillus and Chaetomium only present during the rainy season.…”

Section: Discussionmentioning

confidence: 99%

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Seasonal variability in fungal endophytes from Aizoaceae plants in the Succulent Karoo biodiversity hotspot, South Africa

Pieterse

Aveling

Jacobs

et al. 2018

Journal of Arid Environments

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All ten species of Aizoaceae screened in this study were populated with endophytes. Fifty nine fungal species from 25 genera, including fourteen rare species, were identified. Seasonal specificity was observed; with 32 and 21 fungal endophytes isolated only during the flowering and dry seasons, respectively. The genus Fusarium was the most abundant in samples from the flowering season, whilst Alternaria and Cladosporium were equally abundant in the dry season. Rarely isolated genera included Neophaeosphaeria, Periconia, Preussia, Schizothecium and Truncatella. Fusarium oxysporum, Paecilomyces victoriae and Talaromyces pinophilus were the largest contributors to the differences in community structure observed for fungal endophytes from the different seasons. Endophytic fungal richness was very high in comparison to other global arid regions. This is the first record of all these fungal species isolated from Aizoaceae plants in their endemic environment in the most biodiverse arid region in the world, the Succulent Karoo in South Africa.

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“…The absence of seasonality was also observed by Yadav et al (2016) in their study on endophytic fungi associated with Eugenia jambolana Lam.…”

Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 78%

See 1 more Smart Citation

Seasonal variability in fungal endophytes from Aizoaceae plants in the Succulent Karoo biodiversity hotspot, South Africa

Pieterse

Aveling

Jacobs

et al. 2018

Journal of Arid Environments

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“…Maria & Shidhar (2003) also analyzed wood from costal mangrove swamp in southeast India and found more fungal diversity in the rainy season than in the dry season. In the study by Yadav et al (2016), season had a significant influence over the diversity of endophytic fungi: the highest species diversity was detected during the rainy season, while the lowest was detected during the dry season. However, their data on fungal species diversity was not found to correlate with the number of isolates found in each season.…”

Section: Resultsmentioning

confidence: 99%

Density and diversity of filamentous fungi in the water and sediment of Araçá bay in São Sebastião, São Paulo, Brazil

et al. 2018

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Araçá Bay, located in the city of São Sebastião, São Paulo, Brazil, is a protected area of substantial complexity. It represents the last remaining mangrove swamp preserve between the cities of Bertioga and Ubatuba on the northern coast of São Paulo State. This mangrove swamp has specific physical and chemical properties, and it shelters a wide variety of life, including fungi. These microorganisms are present in a variety of species with different morphophysiological features, and they have the ability to produce enzymes of biotechnological importance. The goal of this study was to quantify, isolate, and identify filamentous fungi in water and sediment samples from the Araçá Bay mangrove swamp in São Sebastião. Two samplings were performed in the summer and two were performed in the winter. The samples were collected from intertidal zones, and dissolved oxygen (DO), temperature, salinity, and pH were measured in situ. The spread plate technique was used to inoculate the samples collected on plates with a potato dextrose agar (PDA) medium. A total of 208 colonies (68 from water samples and 140 from sediment samples) were isolated, and they were identified based on their morphological characteristics. Filamentous fungus density was higher in the sediment than in the water, and the samplings performed in the winter revealed a higher density than those performed in the summer. Though some of the environmental parameters were not ideal for fungal development, a high quantity of growth was nevertheless observed. When the isolated colonies were analyzed, the greatest diversity and species richness were found in the summer samples. The genera identified in all of the samples were Aspergillus, Penicillium, Cladosporium, and Fusarium. The pathogenic species found from these genera were Aspergillus fumigatus, A. terreus, Penicillium citrinum, and P. chrysogenum. These species are also able to produce enzymes that offer a variety of applications. The fungal community described herein represents the diversity found in this mangrove swamp during the period studied. Many of the fungus species found are pathogenic and may be useful due to their ability to produce specific enzymes applicable in the biotechnological and pharmaceutical industries. Keywords: Mangrove swamp, Environmental parameters, Mycology. Densidade e diversidade de fungos filamentosos na água e sedimento da Baía do Araçá, São Sebastião (SP), BrasilResumo: A Baía do Araçá, localizada no município de São Sebastião (SP), é uma região protegida, de grande complexidade, mantendo o último remanescente preservado de manguezal entre Bertioga e Ubatuba, litoral Norte do Estado de São Paulo. Manguezal caracteriza-se com propriedades físico-químicas específicas e abriga grande diversidade de seres vivos, entre eles os fungos. Estes microrganismos apresentam grande variedade de espécies e diferentes características morfofisiológicas com capacidade de produzir algumas enzimas de importância biotecnológica. Este trabalho teve como objetivo quantificar, isolar e id...

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“…For example, 22 fungal endophytes were isolated from Q. cerris and Q. pubescens (Moricca, Ginetti, & Ragazzi, 2012), 19 were isolated from Q. suber (Linaldeddu, Sirca, Spano, & Franceschini, 2011), and 25 endophytes were isolated from herbaceous and woody organs of Q. robur (Gonthier, Gennaro, & Nicolotti, 2006). Most of the isolated fungal endophytes in this study belonged to Ascomycetes, as did the fungal endophytes of different woody plants (Martins, Pereira, Bota, Bento, & Baptista, 2016;Yadav, Yadav, Kumar, & Yadav, 2016) as well as other oak species (Linaldeddu et al, 2011;Ragazzi et al, 2001;Ragazzi, Moricca, Capretti, Dellavalle, & Turco, 2003), investigated in many previous studies. Sordariomycetes were the dominant class (Moricca et al, 2012).…”

Section: Fungal Endophytes Organ Preference and Ecological Patternsmentioning

confidence: 55%

Culture‐based methods using low‐temperature incubation revealed cold‐adapted fungal endophytes from semiarid forests

et al. 2019

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Fungal endophytes are an important part of the plant microbiome and participate in maintaining the stability of ecosystems. Culture‐based methods are frequently considered in studying fungal communities because of their advantages in providing cultures for further experiments and their low cost. In comparison with next‐generation sequencing methods, their ability to assess fungal diversity is questionable. Here, we show how using two different incubation temperatures can improve the yield of fungal endophytes by culture‐based methods. Diversity, organ preference and spatiotemporal variability of endophytic fungal communities living within Quercus brantii L. were investigated using two different incubation temperatures. To test the effects of using low‐temperature incubation on diversity estimations, twigs and leaves of Quercus brantii were incubated under 25°C and 4°C conditions. Isolation rate and Hill's series of diversity were calculated for each sample. Model‐based analysis was used to evaluate the effects of (a) incubation temperature, (b) organ type and (c) spatiotemporal variations on fungal isolation rate, fungal diversity and community composition. Our results showed a strong organ specificity and temporal dynamics among endophytic fungal communities, but the location of the forest stand had only a limited effect on fungal community composition. Low‐temperature incubation enabled us to improve culture‐based methods by discovering the diversity of cold‐adapted fungal endophytes and a significantly different part of the endophytic communities that is usually missed by customary culturing temperature. The isolation of cold‐adapted endophytes from a semiarid environment opens a new window to further studies on this kind of fungi in such ecosystems.

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Spatial and seasonal influences on culturable endophytic mycobiota associated with different tissues of Eugenia jambolana Lam. and their antibacterial activity against MDR strains

Cited by 32 publications

References 62 publications

Seasonal variability in fungal endophytes from Aizoaceae plants in the Succulent Karoo biodiversity hotspot, South Africa

Seasonal variability in fungal endophytes from Aizoaceae plants in the Succulent Karoo biodiversity hotspot, South Africa

Density and diversity of filamentous fungi in the water and sediment of Araçá bay in São Sebastião, São Paulo, Brazil

Culture‐based methods using low‐temperature incubation revealed cold‐adapted fungal endophytes from semiarid forests

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