Reaction of some tomato cultivars to tomato leaf curl virus and evaluation of the endophytic colonisation with<i>Beauveria bassiana</i>on the disease incidence and its vector,<i>Bemisia tabaci</i>

El-Deeb, Hatem M.; Lashin, S. M.; Arab, Y.

doi:10.1080/03235408.2012.681246

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…One proof for ISR is the reduction of disease incidence in plant parts distant from the location of the inoculated beneficial agent, as observed in the bioassay reported in this work [18]. ISR in tomato plants by endophytic B. bassiana has been well documented in the literature [18,41,53,66,85]. Thus, it may be hypothesized that one of the diverse indirect mechanisms of action or a synergistic committance responsible for the observed biocontrol.…”

Section: B Bassianasupporting

confidence: 56%

Selection of Endophytic Beauveria bassiana as a Dual Biocontrol Agent of Tomato Pathogens and Pests

et al. 2021

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Endophytic fungi (EF) can enhance both plant growth and defense barriers against pests and pathogens, contributing to the reduction of chemical pesticides and fertilizers use in agriculture. Beauveria bassiana is an entomopathogenic fungus showing endophytism in several crops, often associated with a good capacity to limit the development of pests and disease agents. However, the diversity of the protective efficacy and plant response to different strains can be remarkable and needs to be carefully assessed for the successful and predictable use of these beneficial microorganisms. This study aims to select B. bassiana strains able to colonize tomato plants as endophytes as well as to control two important disease agents, Botrytis cinerea and Alternaria alternata, and the pest aphid, Macrosiphum euphorbiae. Nine wild-type isolates and one commercial strain were screened for endophytism, then further characterized for plant-growth promotion plus inhibition of disease development and pest infestation. Four isolates proved to have a good control activity against the biotic stressors tested, but only Bb716 was also able to promote plant growth. This work provides a simple workflow for the selection of beneficial EF, paving the way towards more effective use of B. bassiana in Integrate Pest Management (IPM) of tomato.

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Section: B Bassianasupporting

confidence: 56%

Selection of Endophytic Beauveria bassiana as a Dual Biocontrol Agent of Tomato Pathogens and Pests

et al. 2021

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“…However, it is very difficult to compare results for conventional fungal pathogenesis with those of endophytic antagonism. El-Deeb et al (2012) observed that the mortality of whiteflies, Bemisia tabaci (Hemiptera: Aleyrodidae), was highest when offered tomato leaves endophytically colonized by B. bassiana (90% mortality) compared to mortality rates (10%) observed following exposure to fungi applied to the leaf surface. The opposite was the case when Allegrucci et al (2017) and Klieber and Reineke (2016) observed the survival rates of T. absoluta offered tomato leaves colonized by endophytic B. bassiana when compared to survival rates following exposure of T. absoluta to conidia on tomato leaves.…”

Section: Discussionmentioning

confidence: 99%

Endophytic colonization of tomato plants by the entomopathogenic fungus Beauveria bassiana for controlling the South American tomato pinworm, Tuta absoluta

Silva

Abib

et al. 2020

CABI Agric Biosci

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Background: The deployment of entomopathogenic fungi (EPF) for the control of crop pests is an important alternative to synthetic pesticides. Despite recent advances in EPF formulations and application techniques, their efficacy is still limited by abiotic and biotic factors. Entomopathogenic fungi naturally colonize plant tissues or they can be artificially inoculated, protecting the plants from insect attack. Beauveria bassiana is the most widely used fungal biological control agent and has potential as an endophyte to protect a range of crops. Although B. bassiana is known to be pathogenic to the South American tomato pinworm, Tuta absoluta (Meyrick), this fungus could be more efficient when deployed as an endophyte to protect tomato plants from attack. Methods: Three B. bassiana isolates were screened for virulence against T. absoluta larvae by application of conidia to leaf surfaces. Following confirmation of virulence, tomato plants were then exposed to conidial suspensions using a forced uptake technique. Only one isolate, LPP139, colonized the leaves. Seedlings were then inoculated with LPP139 and the presence of the fungus in different plant tissues was monitored over 30 days. Possible effects of B. bassiana endophytic colonization on plant development were also evaluated. Following confirmation of endophytic colonization of leaf tissues, T. absoluta 2nd or 3rd instar larvae were offered leaves and survival was monitored over a 7-day period. Results: All three B. bassiana isolates were virulent to T. absoluta, with approximately 90% mortality over 10 days when conidia had been applied to leaf surfaces. Various plant inoculation techniques were tested but only seedling inoculation was successful. LPP139 successfully colonized all of the plant tissues. High percentages of colonization were observed in roots, stems and leaves up to 30 days after inoculation, with no negative effects on plant growth. When T. absoluta larvae were exposed to B. bassiana colonized leaves, survival was reduced to zero over a 7-day period. Conclusions: The endophytic colonization of tomato plants with EPF is a promising method of controlling the South American tomato pinworm. The fungus was detectable for up to 30 days, longer than has been previously observed

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“…sorghum FA [73,77] SD [77] tobacco FA [82] ST [82] RD [82] wheat FA [82,94] SD [96,97] ST [94] RD [82] soybean FA [82] corn FA [95] maize FA [74,84,98] SI [74] RD [82] ST [32] potato FA [99] coffee FA [76,100] SI [76] SD [76] tomato FA [81,101] SD [17,27,34,103] SI [104] RD [81] ST [103,104,107] grapevine FA [31,90] banana SI [108] RD [108] fava bean ST [56] common bean ST [16] SD [78] cotton ST [27,70] soybean RD [82] cassava SD [109] sweet pepper SD [57] rice FA [110] Table A1. Cont.…”

Section: Beauveria Bassianamentioning

confidence: 99%

Endophytic Entomopathogenic Fungi: A Valuable Biological Control Tool against Plant Pests

2020

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Among the non-chemical insect control methods, biological control is one of the most effective human and environmentally friendly alternatives. One of the main biological control methods is the application of entomopathogenic fungi (EPF). Today, biological crop protection with EPF plays a key role in projects for the sustainable management of insect pests. EPF have several advantages over conventional insecticides, including cost-effectiveness, high yield, absence of harmful side-effects for beneficial organisms, fewer chemical residues in the environment and increased biodiversity in ecosystems. Apart from direct application as contact bioinsecticides, EPF are able to colonize plants as endophytes acting not only as pest and disease control agents but also as plant growth promoters. The present paper presents an outline of the biocontrol potential of several EPF, which could be harnessed for the development of new integrated pest Management (IPM) strategies. Emphasis is given on benefits of endophytic EPF, on issues for practical application and in fields in need of further research. Our findings are discussed in the context of highlighting the value of entomopathogenic fungal endophytes as an integral part of pest management programs for the optimization of crop production.

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Reaction of some tomato cultivars to tomato leaf curl virus and evaluation of the endophytic colonisation withBeauveria bassianaon the disease incidence and its vector,Bemisia tabaci

Cited by 13 publications

References 25 publications

Selection of Endophytic Beauveria bassiana as a Dual Biocontrol Agent of Tomato Pathogens and Pests

Selection of Endophytic Beauveria bassiana as a Dual Biocontrol Agent of Tomato Pathogens and Pests

Endophytic colonization of tomato plants by the entomopathogenic fungus Beauveria bassiana for controlling the South American tomato pinworm, Tuta absoluta

Endophytic Entomopathogenic Fungi: A Valuable Biological Control Tool against Plant Pests

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