An endophytic Beauveria bassiana strain increases spike production in bread and durum wheat plants and effectively controls cotton leafworm (Spodoptera littoralis) larvae

Sánchez‐Rodríguez, Antonio Rafael; Raya–Díaz, Silvia; Zamarreño, Ángel M.; García‐Mina, José María; Campillo, M. C. del; Quesada‐Moraga, Enrique

doi:10.1016/j.biocontrol.2017.01.012

Cited by 146 publications

(138 citation statements)

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“…Our results also demonstrate that the inoculation of strawberry roots with isolates of Metarhizium spp., B. bassiana and C. fumosorosea resulted in increased plant biomass and fruit yield compared to the commercial microbial products with growth promotion abilities. A number of studies have previously reported the growth promotion of plants inoculated with entomopathogenic fungi . Growth promotion observed in plants colonized by entomopathogenic fungi might be attributed to the production of organic acids, phytohormones or siderophores, which can change the bioavailability of several nutrients .…”

Section: Discussionmentioning

confidence: 99%

“…A number of studies have previously reported the growth promotion of plants inoculated with entomopathogenic fungi. 14,15,33,46,[53][54][55][56] Growth promotion observed in plants colonized by entomopathogenic fungi might be attributed to the production of organic acids, phytohormones or siderophores, which can change the bioavailability of several nutrients. [57][58][59] Furthermore, studies on endophytic fungus-plant interactions revealed that the positive effects on plant growth could also be due to fixation of nutrients.…”

Section: Discussionmentioning

confidence: 99%

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Fungal isolate and crop cultivar influence the beneficial effects of root inoculation with entomopathogenic fungi in strawberry

Canassa

D’Alessandro

Sousa

et al. 2019

Pest Management Science

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BACKGROUND Root inoculations of crop plants with beneficial fungi constitute a promising strategy for growth promotion and control of above‐ground pests and diseases. Here, strawberry roots (cultivar ‘Albion’ and ‘Pircinque’) were inoculated with 25 different Brazilian entomopathogenic fungal isolates of three genera and the effects on Tetranychus urticae oviposition and plant growth were evaluated in greenhouse experiments. RESULTS Reductions in the number of T. urticae eggs compared to control treatments were observed on both cultivars inoculated with almost all isolates. For the cultivar ‘Albion’, Metarhizium anisopliae (ESALQ 1604, ESALQ 1669), M. robertsii (ESALQ 1622, ESALQ 1635), Metarhizium sp. Indet. (ESALQ 1684) and Beauveria bassiana (ESALQ 3323) increased dry weight of roots and leaves, and fruit yield, while M. robertsii (ESALQ 1634), Metarhizium sp. Indet. (ESALQ 1637) and (ESALQ 1636) enhanced fruit yield and dry weight of leaves, respectively. For the cultivar ‘Pircinque’, M. anisopliae (ESALQ 1669) was the only isolate observed to increase dry weight of roots. CONCLUSION The results suggest that inoculation of strawberry roots with entomopathogenic fungi may be an innovative strategy for pest management above ground. Furthermore, these inoculations may also stimulate plant growth and strawberry production, but the effects depend on fungal strains and crop cultivar. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fungal isolate and crop cultivar influence the beneficial effects of root inoculation with entomopathogenic fungi in strawberry

Canassa

D’Alessandro

Sousa

et al. 2019

Pest Management Science

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“…It is important to mention that recent reports are available on the effect of endophytic EPF that live internally in the plants such as M. anisopliae that lives in Brassica napus and practices control effect against the larvae of Plutella xylostella (Batta 2013), B. bassiana in Vitis vinifera that exercises adverse effect against various sucking insects (Rondot and Reineke 2017), and B. bassiana in durum wheat plants that exercises reducing effect against Spodoptera littoralis (Sanchez-Rodriguez et al 2017). Therefore, the lethal effect of these endophytic fungi on target insects is shown by oral ingestion of plant sap in sucking insects or by eating the plant parts in chewing insects.…”

Section: Mortality Of S Granarius Adults Fed On Conidia Of Epfmentioning

confidence: 99%

Efficacy of two species of entomopathogenic fungi against the stored-grain pest, Sitophilus granarius L. (Curculionidae: Coleoptera), via oral ingestion

Batta

2018

Egypt J Biol Pest Control

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Sitophilus granarius is a serious stored-grain insect that can destroy the whole grain of cereal crops. The present research demonstrated that two species of entomopathogenic fungi (EPF), Beauveria bassiana and Metarhizium anisoplidae, killed the treated adults of S. granarius when applied via oral ingestion. Mortality of S. granarius was shown by growth and development of the ingested conidia in the insect gut causing death of infected insects. During bioassays, the fungus conidia were mixed with wheat flour then provided to the insects for feeding on the mixture for 24 h. The insects were surface-treated with a contact fungicide (Merpan®) to kill the external conidia that could penetrate the cuticle and develop to kill the infected insects. Results indicated that the most effective ratio of mixing fungus conidia with the wheat flour was 0.1:2.0 (g/g) where this ratio should contain 2.75 × 10 8 conidia/g of M. anisopliae mixture or 2.6 × 10 8 conidia/g of B. bassiana mixture. Ingested conidia of each fungus caused a first mortality of S. granarius adults after 10 and 12 days of B. bassiana and M. anisopliae treatments, respectively. They also caused 50% mortality after 2.787 and 3.047 weeks of treatments for the same fungi, respectively. The novelty of this research is in adjusting and applying a technique of disinfection of insect cuticle with a fungicide and then verifying the presence of applied fungi in the infected insects. The practical application of this method was discussed.

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“…have a broad host range, although their virulence, and thus, their efficacy as biocontrol agents depends largely on the strain more than the species . Indeed, our previous studies have reported the efficacy of several isolates of entomopathogenic fungi for control of S. littoralis , both by direct inoculation of larvae with the fungus and by feeding larvae with leaves from endophytically‐colonized plants . The M. brunneum isolate EAMa 01/58‐Su, in particular, has been shown to be virulent against S. littoralis and other economically important insect pests …”

Section: Introductionmentioning

confidence: 99%

“…22 Indeed, our previous studies have reported the efficacy of several isolates of entomopathogenic fungi for control of S. littoralis, both by direct inoculation of larvae with the fungus 11 and by feeding larvae with leaves from endophytically-colonized plants. 23 The M. brunneum isolate EAMa 01/58-Su, in particular, has been shown to be virulent against S. littoralis 11 and other economically important insect pests. 20,24 Combined use of multiple micro-and macro-biological control agents may enhance the effectiveness of any IPM program.…”

Section: Introductionmentioning

confidence: 99%

Compatibility between the endoparasitoid Hyposoter didymator and the entomopathogenic fungus Metarhizium brunneum: a laboratory simulation for the simultaneous use to control Spodoptera littoralis

Miranda-Fuentes

Quesada‐Moraga

Aldebis

et al. 2019

Pest Management Science

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BACKGROUND The cotton leafworm, Spodoptera littoralis, is one of the most destructive pests in the Mediterranean basin, being predominantly controlled using synthetic chemical pesticides. Strain EAMa 01/58‐Su of the fungus Metarhizium brunneum and the parasitoid Hyposoter didymator are promising biological control agents for this pest. In this study, we assessed the compatibility between these two agents to control S. littoralis under joint attack scenarios. RESULTS Firstly, the direct and indirect effects of the fungus towards parasitoid adults were studied. The fungus significantly decreased life expectancy of the parasitoid (mortality = 62.5%; mean lethal concentration = 1.85 × 106 conidia ml−1; average survival time = 92.2 h) when applied at high concentrations (108 conidia ml−1), whereas it did not affect the reproductive potential of the parasitoid females during the 3 days after treatment. Secondly, the combinations between the two agents to control S. littoralis under different simultaneous use scenarios (inoculation of S. littoralis larvae with the fungus before being exposed to parasitoid females and vice versa) were investigated, with additive effect in all cases. A significant effect on fitness (preimaginal development time and reproductive potential) of the F1 parasitoid generation were detected. Moreover, parasitization significantly reduced the total hemocytes in S. littoralis hemolymph compared with the control, promoting fungal infection. Finally, parasitoids showed a significant preference for non‐inoculated S. littoralis larvae. CONCLUSIONS We demonstrated compatibility (additive effect) between fungus and parasitoid under different joint attack scenarios to control S. littoralis in laboratory conditions. However, this will be supported by our ongoing greenhouse and field studies. © 2019 Society of Chemical Industry

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An endophytic Beauveria bassiana strain increases spike production in bread and durum wheat plants and effectively controls cotton leafworm (Spodoptera littoralis) larvae

Cited by 146 publications

References 46 publications

Fungal isolate and crop cultivar influence the beneficial effects of root inoculation with entomopathogenic fungi in strawberry

Fungal isolate and crop cultivar influence the beneficial effects of root inoculation with entomopathogenic fungi in strawberry

Efficacy of two species of entomopathogenic fungi against the stored-grain pest, Sitophilus granarius L. (Curculionidae: Coleoptera), via oral ingestion

Compatibility between the endoparasitoid Hyposoter didymator and the entomopathogenic fungus Metarhizium brunneum: a laboratory simulation for the simultaneous use to control Spodoptera littoralis

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