Endophytic fungi in forest trees: are they mutualists?

Sieber, Thomas N.

doi:10.1016/j.fbr.2007.05.004

Cited by 463 publications

(393 citation statements)

References 102 publications

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“…are eminent endophytic fungal groups while Fusarium, Colletotrichum, Curvularia and Phomopsis are well known as epiphytes and phytopathogenic fungi although non-pathogenic endophytic forms of these also exist (Strange and Scott 2005; Yeasmin and Shamsi 2013). Some endophytic fungi remain latent inside the host plant without producing any symptoms of disease until the environmental conditions are favourable for the fungus to turn into a pathogenic form (Sieber 2007; Rodriguez and Redman 2008). However, because all the fungi in the current investigation were isolated from healthy plant parts after thorough surface sterilization, the fungi obtained should have existed as endophytic forms during the time they have been isolated.…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial activities of endophytic fungi of the Sri Lankan aquatic plantNymphaea nouchaliand chaetoglobosin A and C, produced by the endophytic fungusChaetomium globosum

et al. 2016

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Twenty distinct endophytic fungi were isolated from the surface-sterilized plant parts of Nymphaea nouchali and were identified using morphological and molecular techniques. At 300 µg/disc concentration, eight of the 20 fungal extracts exhibited antimicrobial activities against Staphylococcus aureus (ATCC 25923) and Bacillus cereus (ATCC 11778) while two within the eight showed activity against Pseudomonas aeruginosa (ATCC 9027) and Escherichia coli (ATCC 35218). Furthermore, investigation of the crude extract of Chaetomium globosum resulted in the isolation of two known cytochalasans, chaetoglobosin A and C, and their structures were elucidated and confirmed by mass and nuclear magnetic resonance (NMR) (1H, 13C, COSY, HSQC, HMBC and tROESY) spectral data. Chaetoglobosin A showed antibacterial activities against Bacillus subtilis (MIC 16 µg mL−1), Staphylococcus aureus (MIC 32 µg mL−1) and methicillin-resistant Staphylococcus aureus (MRSA, MIC 32 µg mL−1). This is the first study to report the isolation, identification and antimicrobial properties of endophytic fungi of N. nouchali in Sri Lanka.

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Section: Resultsmentioning

confidence: 99%

Antimicrobial activities of endophytic fungi of the Sri Lankan aquatic plantNymphaea nouchaliand chaetoglobosin A and C, produced by the endophytic fungusChaetomium globosum

et al. 2016

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“…The predominant endophytes belonged to the genera Colletotrichum, Phomopsis, Phoma, and Guignardia. These endophytes have a wide host range and can colonize several taxonomically unrelated plant hosts (Murali et al, 2006;Sieber, 2007). Moreover, the cultivars are closely genetically related; Sayamakaori and Hokumei are derived from Yabukita tea plants.…”

Section: Effect Of Cultivar and Tissue Type On Endophytic Community Smentioning

confidence: 99%

“…Moreover, the cultivars are closely genetically related; Sayamakaori and Hokumei are derived from Yabukita tea plants. The level of similarity of endophyte communities increases with increasing genetic relatedness of the host plants (Sieber 2007). …”

Section: Effect Of Cultivar and Tissue Type On Endophytic Community Smentioning

confidence: 99%

Diversity of Tea Endophytic Fungi: Cultivar- And Tissue Preferences

Win¹,

Matsumura²,

Fukuda³

2018

Appl. Ecol. Env. Res.

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Abstract. Endophytic fungi were isolated from four healthy tissues (new leaf, old leaf, bark, and xylem) of three Japanese tea cultivars (Hokumei, Sayamakaori, and Yabukita) at the Saitama Tea Research Institute, Japan in July 2015. A total of 520 isolates was obtained from 600 segments and were classified into 44 fungal taxa; the majority (93.2%) belonged to the phylum Ascomycota. The lowest infection rate was found in the xylem tissue of all cultivars. The total infection rate did not differ significantly among the cultivars. Colletotrichum gloeosporioides f. sp. camelliae and Pleosporales sp. were the predominant endophytes in all tissue types and cultivars. Most of the dominant endophytes showed obvious cultivar and tissue preferences. Tissue type played a more important role in shaping community structure than did cultivar. Colletotrichum gloeosporioides f. sp. camelliae preferred bark and old leaf tissue while Pleosporales sp. preferred new leaf tissue. The colonization frequency of C. gloeosporioides f. sp. camelliae was significantly lower in the Yabukita cultivar. Stem tissues harbored more diverse endophytes than did leaf tissues.

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“…They can enter plant tissue through reproductive structures such as seeds or can enter the plant through wounds, stomata or lenticels and can infect the stems, twigs, roots and leaves (Brown and Hendrix 1981;Smith et al 1996a;Smith et al 1996b). These fungi have the ability to colonise hosts without any outward symptom development and they may remain quiescent inside the host for a length of time, where asymptomatic colonisation of hosts is characteristic of endophytes (Stone et al 2004;Seiber 2007). This quiescent phase may be disrupted by some form of stress on the host; such as water stress, causing the pathogenic phase of the lifecycle to be triggered.…”

Section: Au)mentioning

confidence: 99%

“…Latent pathogens are characterised by asymptomatic infection of the host and disease expression is linked to host stress (Stone et al 2004;Seiber 2007;Dakin et al 2009). Plant material (including seeds and cuttings) may harbour potential pathogens asymptomatically and "healthy" material can be spread throughout different geographical areas.…”

Section: Pathogenicity Trial On Fruitmentioning

confidence: 99%

Pathogenic Botryosphaeriaceae associated with Mangifera indica in the Kimberley Region of Western Australia

Ray²,

et al. 2011

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Members of the Botryosphaeriaceae, in particular Lasiodiplodia theobromae, Neofusicoccum parvum, Neofusicoccum mangiferae and Botryosphaeria dothidea, commonly cause stem cankers, dieback and stem end rot of mangoes worldwide. In the current study, eight taxa of Botryosphaeriaceae were identified as canker-associated fungi, pathogens, potential pathogens or endophytes of mangoes in the Kimberley, Australia. These include Neoscytalidium novaehollandiae, Neoscytalidium dimidiatum, Pseudofusicoccum adansoniae, P. ardesiacum, P.kimberleyense, Lasiodiplodia sp. 1, Lasiodiplodia iraniensis and Lasiodiplodia pseudotheobromae. The pathogenicity of a selection of these species toward fruit and branches was tested. All were pathogenic to mango in comparison to the control, with Lasiodiplodia spp.being the most pathogenic. It appears that either geographic isolation or the unique growing conditions in the Kimberley may have provided an effective barrier to the acquisition or establishment of known botryosphaeriaceous pathogens. Wounds caused by mechanical pruning may provide an entry point for infection, whilst severe pruning may increase plant stress.

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Endophytic fungi in forest trees: are they mutualists?

Cited by 463 publications

References 102 publications

Antimicrobial activities of endophytic fungi of the Sri Lankan aquatic plantNymphaea nouchaliand chaetoglobosin A and C, produced by the endophytic fungusChaetomium globosum

Antimicrobial activities of endophytic fungi of the Sri Lankan aquatic plantNymphaea nouchaliand chaetoglobosin A and C, produced by the endophytic fungusChaetomium globosum

Diversity of Tea Endophytic Fungi: Cultivar- And Tissue Preferences

Pathogenic Botryosphaeriaceae associated with Mangifera indica in the Kimberley Region of Western Australia

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