Fungal endophytes from cactus Cereus jamacaru in Brazilian tropical dry forest: a first study

Bezerra, Jadson Diogo Pereira; Santos, Marília G. S.; Barbosa, Renan do Nascimento; Svedese, Virgínia Michelle; Lima, Débora María Massa; Fernandes, Maria José; Gomes, Bruno; Paiva, Laura Mesquita; Almeida-Cortez, Jarcilene S.; Souza-Motta, Cristina Maria de

doi:10.1007/s13199-013-0243-1

Cited by 57 publications

(52 citation statements)

References 61 publications

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“…Leaves of the medicinal plant M. urundeuva were randomly collected from eight trees (length, 3-m tall) from each studied area, totalling 16 trees. The leaves were packed in paper bags and processed in the laboratory within 48 h. To isolate endophytic fungi, the plant material was processed as suggested by Bezerra et al (2013;. Leaf fragments were placed on potato-dextrose-agar medium (PDA) supplemented with chloramphenicol (100 mg/l) and tetracycline (50 mg/l) to restrict bacterial growth.…”

Section: Plant Collection and Isolation Of Endophytic Fungimentioning

confidence: 99%

Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase

et al. 2019

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We studied the fungal endophyte community of the leaves of Myracrodruon urundeuva in Brazil along with their potential to produce L-asparaginase. In total, 187 endophytes were isolated. The colonization rate of leaf fragments from caatinga (10.41 %) was lower than those from brejo de altitude (39.58 %). Sequences of ITS rDNA from all endophytes revealed relationships with Ascomycota (Botryosphaeriales, Chaetothyriales, Diaporthales, Eurotiales, Glomerellales, Hypocreales, and Pleosporales) and Basidiomycota (Polyporales). The most frequent endophytes were members of the genus Diaporthe. Talaromyces was an indicator genus for caatinga while Phyllosticta, Diaporthe, and Colletotrichum were for brejo de altitude. The composition of endophytic fungi in caatinga and brejo de altitude differed significantly, its richness and diversity (H' = 3.41) being significantly higher in brejo de altitude. Diaporthe sp. URM 7793 was the best producer of L-asparaginase (2.41 U/g), followed by Diaporthe sp. URM 7779 (2.00 U/g), Talaromyces sp. URM 7785 (1.91 U/g), and Diaporthe sp. URM 7792 (1.47 U/g). The composition of endophytic fungi assemblages is strongly influenced by the type of ecosystem. In its natural habitat, M. urundeuva harbors an important diversity of endophytes, which could be used to produce L-asparaginase.

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Section: Plant Collection and Isolation Of Endophytic Fungimentioning

confidence: 99%

Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase

et al. 2019

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“…In addition, endophytes can also accelerate seed emergence, assist in establishing the plant under adverse conditions (Chanway, 1997), and increase plant growth and development (Bent and Chanway, 1998; Lazarovits and Nowak, 1997; Pillay and Nowak, 1997; Nassar et al ., 2005, Bao and Roossinck, 2011; Bezerra et al ., 2013; Verma et al ., 2015; Chebotar et al ., 2015). …”

Section: Endophytic Microorganisms and Biological Controlmentioning

confidence: 99%

The diversity of citrus endophytic bacteria and their interactions with Xylella fastidiosa and host plants

2016

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The bacterium Xylella fastidiosa is the causal agent of citrus variegated chlorosis (CVC) and has been associated with important losses in commercial orchards of all sweet orange [Citrus sinensis (L.)] cultivars. The development of this disease depends on the environmental conditions, including the endophytic microbial community associated with the host plant. Previous studies have shown that X. fastidiosa interacts with the endophytic community in xylem vessels as well as in the insect vector, resulting in a lower bacterial population and reduced CVC symptoms. The citrus endophytic bacterium Methylobacterium mesophilicum can trigger X. fastidiosa response in vitro, which results in reduced growth and induction of genes associated with energy production, stress, transport, and motility, indicating that X. fastidiosa has an adaptive response to M. mesophilicum. Although this response may result in reduced CVC symptoms, the colonization rate of the endophytic bacteria should be considered in studies that intend to use this endophyte to suppress CVC disease. Symbiotic control is a new strategy that uses symbiotic endophytes as biological control agents to antagonize or displace pathogens. Candidate endophytes for symbiotic control of CVC must occupy the xylem of host plants and attach to the precibarium of sharpshooter insects to access the pathogen. In the present review, we focus on interactions between endophytic bacteria from sweet orange plants and X. fastidiosa, especially those that may be candidates for control of CVC.

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“…Endophytic fungi of the genus Curvularia have been observed in prospecting studies with antibacterial activity (Furtado et al, 2007;Bezerra et al, 2013;.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial activity of endophytic fungi isolated from Croton lechleri (Euphorbiaceae)

Vargas¹,

Albuquerque²,

Ribeiro³

et al. 2018

J. Med. Plants Res.

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Croton lechleri is a native species from the Amazon and used with relative frequency in folk medicine in Brazil and other countries. Diversity and antibacterial activity of endophytic fungi associated with this plant were studied here. Samples of leaves and stems were used and 575 endophytic fungi were isolated (307 from leaves and 268 from stems), comprising 284 morphotypes distributed in 13 genera and unknown. The most frequently isolated genera were Phomopsis (30.78%), Penicillium (21.57%) and Pestalotiopsis (16.70%). Diversity and richness of species were higher in leaf tissues. Fifty-five fungi presented antibacterial activity. The fungi with the highest activity were Phomopsis (6.34%), Penicillium (3.17%), and those unknown (5.28%). Penicillium sp. 9 showed the highest antibacterial activity against Enterococcus faecalis and Phomopsis sp. 8 and Phomopsis sp. 9 against Streptococcus pneumoniae and Staphylococcus aureus. Curvularia sp. 1 and a fungus that could not be identified (Unknown sp. 9), showed the highest antibacterial activity against Klebsiella pneumoniae and Escherichia coli, respectively. Only two fungi (Penicillium sp. 9 and Curvularia sp. 1) inhibited the five tested bacteria. Endophytic fungi of C. lechleri harbor a great diversity of endophytic fungi, which have the potential for producing antibacterial compounds.

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Fungal endophytes from cactus Cereus jamacaru in Brazilian tropical dry forest: a first study

Cited by 57 publications

References 61 publications

Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase

Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase

The diversity of citrus endophytic bacteria and their interactions with Xylella fastidiosa and host plants

Antibacterial activity of endophytic fungi isolated from Croton lechleri (Euphorbiaceae)

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