Initial stages of endophytic colonization by Metarhizium involves rhizoplane colonization

Barelli, Larissa; Moreira, Carla Ruffeil; Bidochka, Michael

doi:10.1099/mic.0.000729

Cited by 33 publications

(27 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, numerous studies have documented the ability of Metarhizium spp. to colonize plant roots providing multiple benefits to their host plants 45,50,51 . In general, our results reveal that exposure of both endophytically-colonized host plants to ovipositing T. absoluta females has resulted in a significant reduction in the number of eggs laid on the inoculated plant compared to the control.…”

Section: Discussionmentioning

confidence: 99%

Endophytic fungi protect tomato and nightshade plants against Tuta absoluta (Lepidoptera: Gelechiidae) through a hidden friendship and cryptic battle

Agbessenou

Akutse

Yusuf

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Endophytic fungi live within plant tissues without causing any harm to the host, promote its growth, and induce systemic resistance against pests and diseases. To mitigate the challenging concealed feeding behavior of immature stages of Tuta absoluta in both tomato (Solanum lycopersicum) and nightshade (Solanum scabrum) host plants, 15 fungal isolates were assessed for their endophytic and insecticidal properties. Twelve isolates were endophytic to both host plants with varied colonization rates. Host plants endophytically-colonized by Trichoderma asperellum M2RT4, Beauveria bassiana ICIPE 706 and Hypocrea lixii F3ST1 outperformed all the other isolates in reducing significantly the number of eggs laid, mines developed, pupae formed and adults emerged. Furthermore, the survival of exposed adults and F1 progeny was significantly reduced by Trichoderma sp. F2L41 and B. bassiana isolates ICIPE 35(4) and ICIPE 35(15) compared to other isolates. The results indicate that T. asperellum M2RT4, B. bassiana ICIPE 706 and H. lixii F3ST1 have high potential to be developed as endophytic-fungal-based biopesticide for the management of T. absoluta.

show abstract

Section: Discussionmentioning

confidence: 99%

Endophytic fungi protect tomato and nightshade plants against Tuta absoluta (Lepidoptera: Gelechiidae) through a hidden friendship and cryptic battle

Agbessenou

Akutse

Yusuf

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…On the other hand, equal levels of the suppression of sclerotium index on tubers of the new crop was observed after the M. robertsii and B. bassiana treatments. These effects may be observed because members of the genus Metarhizium mostly colonize rhizosphere and internal root tissues ( Hu & St Leger, 2002 ; St Leger, 2008 ; Steinwender et al, 2015 ; Barelli, Moreira & Bidochka, 2018 ), while Beauveria species adapted to colonize different plant tissues (roots, stems and leaves) ( Behie, Jones & Bidochka, 2015 ). It is likely that the differences in Rhizoctonia inhibition are linked to these adaptations.…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungi decreaseRhizoctoniadisease in potato in field conditions

Tomilova

Shaldyaeva

Kryukova

et al. 2020

PeerJ

View full text Add to dashboard Cite

Rhizoctonia potato disease is widespread in the world and causes substantial yield and quality losses in potato. This study aimed to evaluate the efficacy of entomopathogenic fungi Metarhizium robertsii and Beauveria bassiana in the inhibition of potato Rhizoctonia complex disease. The efficacy of the entomopathogenic fungi M. robertsii and B. bassiana in the defense of potato against Rhizoctonia disease (stem cancer, black scrulf and other forms of manifestation on tubers) was estimated under field conditions in Western Siberia. Preplanting treatment of the tubers with B. bassiana decreased Rhizoctonia disease in the stems and stolons. At the same time, treatment with M. robertsii did not cause a decrease in Rhizoctonia disease in these organs. However, both fungi decreased the sclerotium index on the tubers of new crops. We demonstrated two mechanisms of inhibition of Rhizoctonia solani by M. robertsii and B. bassiana, including (1) direct effect, expressed as inhibition of R. solani sclerotium formation in cocultivation assays, and (2) indirect effect, which is associated with increased peroxidase activity in potato roots under the influence of colonization by entomopathogenic fungi. We suggest that the treatment of seed tubers with B. basiana can effectively manage Rhizoctonia disease during the plant vegetative season and that both fungi significantly improve the quality of the new tuber crop.

show abstract

“…Shade and plant diversity in this system can also protect and promote functional biodiversity such as that of antagonists of pests and pathogens, and pollinators, reducing crop damage by herbivores, and increasing production (Iverson et al, 2014;Rezende et al, 2014;Tscharntke et al, 2011;Winqvist et al, 2011). Plant diversity also promotes more abundant and active populations of insect-pathogenic fungi since these have been reported in mutualistic associations with plants acting as rhizosphere-competent symbionts (Hu & St Leger, 2002) and endophytes (Barelli et al, 2018;Posada, Aime, Peterson, Rehner, & Vega, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…The hypocrealean fungi Metarhizium and Beauveria have been subjected to intense study over the last 200 years, largely aimed at their use as bioinsecticides in inundative biological control programs (Vega et al, ). More recently, the importance of their ecology, occurrence and abundance (Kepler, Ugine, Maul, Cavigelli, & Rehner, ; Meyling & Eilenberg, , ; Sharma, Oliveira, Torres, & Marques, ), and as plant mutualists has come to the fore (Barelli, Moreira, & Bidochka, ; Behie et al, ; Behie, Zelisko, & Bidochka, ; Bruck, ; Elliot et al, ).…”

Section: Introductionmentioning

confidence: 99%

Agroforestry coffee soils increase the insect‐suppressive potential offered by entomopathogenic fungi over full‐sun soils: A case proposing a “bait survival technique”

Moreira

Celestino

Sobrinho

et al. 2019

Ecology and Evolution

View full text Add to dashboard Cite

Entomopathogenic fungi are important natural enemies of insects. However, there is little information on the insect‐suppressive potential of these fungi and possible effects of farming management on this. Meanwhile, changes in natural landscapes due to agricultural intensification have caused considerable biodiversity loss and consequent decay of ecosystem services. However, the adoption of practices such as agroforestry in agroecosystems can foster abiotic and biotic conditions that conserve biodiversity, consequently restoring the provision of ecosystems services. Here, we assessed the effect of management systems (agroforestry or full‐sun) on the pest‐suppressive potential of entomopathogenic fungi in Brazilian coffee plantations. We used the insect bait method coupled with survival analyses to assess the speed of kill by entomopathogenic fungi and their presence in soil samples from both farming systems. We found that insects exposed to agroforestry soils died more quickly than insects exposed to full‐sun soils. Of the fungi isolated from the bait insects, Metarhizium was found most frequently, followed by Beauveria. Meanwhile, Fusarium was frequently isolated as primary or secondary infections. We propose that the differential survival of insects is indicative of a greater suppressive potential by entomopathogenic fungi in agroforestry, and that this could be promoted by the diversified landscape, microclimatic stability, and reduced soil disturbance in agroforestry systems. Furthermore, our results provide a useful demonstration of the potential use of the insect bait method to investigate pest‐suppressive potential through bait insect mortality, and we term this the “bait survival technique.”

show abstract

Initial stages of endophytic colonization by Metarhizium involves rhizoplane colonization

Cited by 33 publications

References 45 publications

Endophytic fungi protect tomato and nightshade plants against Tuta absoluta (Lepidoptera: Gelechiidae) through a hidden friendship and cryptic battle

Endophytic fungi protect tomato and nightshade plants against Tuta absoluta (Lepidoptera: Gelechiidae) through a hidden friendship and cryptic battle

Entomopathogenic fungi decreaseRhizoctoniadisease in potato in field conditions

Agroforestry coffee soils increase the insect‐suppressive potential offered by entomopathogenic fungi over full‐sun soils: A case proposing a “bait survival technique”

Contact Info

Product

Resources

About