Cytotoxicity against insect cells of entomopathogenic fungi of the genera Hypocrella (anamorph Aschersonia): possible agents for biological control

Watts, Patricia; Kittakoop, Prasat; Veeranondha, Sukitaya; Wanasith, Supakit; Thongwichian, Rossukon; Saisaha, Pattama; Intamas, Suthichai; Hywel‐Jones, Nigel L.

doi:10.1017/s0953756203007846

Cited by 26 publications

(11 citation statements)

References 23 publications

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“…2, the common ancestor of the grass symbionts was derived from a pathogen of arthropods with the most closely related taxa, Hypocrella and Metarhizium, producing biologically active secondary metabolites that function in insect pathogenicity (e.g. destruxins; Kershaw et al 1999;Pedras et al 2002;Watts et al 2003). Therefore, we propose that the biochemical potential to produce compounds that are biologically active against animals, especially insects, predates the origin of the grass symbionts, and was likely inherited from an ancestor that was a pathogen of animals.…”

Section: Evolution Of Nutritional Modesmentioning

confidence: 95%

Phylogenetic evidence for an animal pathogen origin of ergot and the grass endophytes

et al. 2007

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Grass-associated fungi (grass symbionts) in the family Clavicipitaceae (Ascomycota, Hypocreales) are species whose host range is restricted to the plant family Poaceae and rarely Cyperaceae. The best-characterized species include Claviceps purpurea (ergot of rye) and Neotyphodium coenophialum (endophyte of tall fescue). They have been the focus of considerable research due to their importance in agricultural and grassland ecosystems and the diversity of their bioactive secondary metabolites. Here we show through multigene phylogenetic analyses and ancestral character state reconstruction that the grass symbionts in Clavicipitaceae are a derived group that originated from an animal pathogen through a dynamic process of interkingdom host jumping. The closest relatives of the grass symbionts include the genera Hypocrella, a pathogen of scale insects and white flies, and Metarhizium, a generalist arthropod pathogen. These data do not support the monophyly of Clavicipitaceae, but place it as part of a larger clade that includes Hypocreaceae, a family that contains mainly parasites of other fungi. A minimum of 5-8 independent and unidirectional interkingdom host jumps has occurred among clavicipitaceous fungi, including 3-5 to fungi, 1-2 to animals, and 1 to plants. These findings provide a new evolutionary context for studying the biology of the grass symbionts, their role in plant ecology, and the evolution of host affiliation in fungal symbioses.

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Section: Evolution Of Nutritional Modesmentioning

confidence: 95%

Phylogenetic evidence for an animal pathogen origin of ergot and the grass endophytes

et al. 2007

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“…Aschersonia species such as A. aleyrodis and A. goldiana have been also reported for their pathogenicity against several pests [33,44,57]. Moreover, this genus is known by its secondary metabolites and cytotoxicity against insect cells but not mammalian cells [58][59][60]. Destruxins isolated from organic extracts from cultures of Aschersonia aleyrodis and other Aschersonia species are worldwide used as biopesticides [58,61].…”

Section: Discussionmentioning

confidence: 99%

Comparative Effect of Indole Acetic Acid and Salicylic Acid on Phytochemical Constituents and Antioxidant Potential of Three Genotypes of Tomato (Solanum lycopersicum (L.) Mill)

Sowobi¹,

Esan²,

Olaiya³

2021

SJB

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Indole acetic acid (IAA) and salicylic acid (SA) are plant bioregulators that stimulate the desired growth and quality response in crops. This study examined the impacts of IAA or SA seed pre-treatment on phytochemical constituents and antioxidants potential in three genotypes of tomato plant. The results indicated that IAA and or SA treatments increased height of the three genotypes of tomato significantly (P ≤ 0.05) when compared with the control group. Lycopene, total flavonoid and phenolic contents of genotypes F2 cobra and panther 17 F1 treated with 40, 80, and 120 mg/L concentrations of IAA, respectively increased significantly as compared to the control group. Furthermore, IAA and or SA significantly increased H2O2 scavenging activity of F1 KIARA by 5.0% compared to the control (0.2%). Genotype F1 KIARA treated with IAA and or SA (80 and 120 mg/L) had a significant increase in DPPH scavenging activity by 55.0% and 53.0% respectively, relative to control group (11%). The Fe2+-chelating activity of IAA-treated (80 mg/L) F1 KIARA and F2 COBRA increased by 56.0% and 17.0%, respectively compared to the control. The synergistic effect of IAA and SA showed a significant effect on phytochemical constituents and antioxidant potential than individual treatment. The results showed that IAA application or in combination with SA could be used as an alternative bio-stimulant to improve the quality of tomato.

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“…In fact, this bis-anthraquinone was first characterized for toxicity against D. melanogaster (ED 50 27.6 µg/mL) [93]. Later on, toxic effects were described on Sf9, a cell line derived from ovarian cells of the fall armyworm (Spodoptera frugiperda) (ID 50 1.2 µg/mL) [94] and in direct feeding assays on larvae of the spruce budworm (Choristoneura fumiferana) (Lepidoptera, Tortricidae) [95,96]. Moreover, toxic effects resulted when larvae of the latter insect fed on the needles of white spruce (Picea glauca) colonized by a rugulosin-producing endophytic fungus, which contained the toxin at a concentration that was effective at retarding the larval growth in vitro [97,98].…”

Section: The Role Of Secondary Metabolitesmentioning

confidence: 99%

Talaromyces–Insect Relationships

Nicoletti

Becchimanzi

2021

Microorganisms

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Facing the urgent need to reduce the input of agrochemicals, in recent years, the ecological relationships between plants and their associated microorganisms have been increasingly considered as an essential tool for improving crop production. New findings and data have been accumulated showing that the application of fungi can go beyond the specific role that has been traditionally assigned to the species, employed in integrated pest management as entomopathogens or mycoparasites, and that strains combining both aptitudes can be identified and possibly used as multipurpose biocontrol agents. Mainly considered for their antagonistic relationships with plant pathogenic fungi, species in the genus Talaromyces have been more and more widely reported as insect associates in investigations carried out in various agricultural and non-agricultural contexts. Out of a total of over 170 species currently accepted in this genus, so far, 27 have been found to have an association with insects from 9 orders, with an evident increasing trend. The nature of their mutualistic and antagonistic relationships with insects, and their ability to synthesize bioactive compounds possibly involved in the expression of the latter kind of interactions, are analyzed in this paper with reference to the ecological impact and applicative perspectives in crop protection.

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Cytotoxicity against insect cells of entomopathogenic fungi of the genera Hypocrella (anamorph Aschersonia): possible agents for biological control

Cited by 26 publications

References 23 publications

Phylogenetic evidence for an animal pathogen origin of ergot and the grass endophytes

Phylogenetic evidence for an animal pathogen origin of ergot and the grass endophytes

Comparative Effect of Indole Acetic Acid and Salicylic Acid on Phytochemical Constituents and Antioxidant Potential of Three Genotypes of Tomato (Solanum lycopersicum (L.) Mill)

Talaromyces–Insect Relationships

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