Evaluation of Trichoderma harzianum strain T22 as biological control agent of Calonectria pauciramosa

Vitale, A.; Cirvilleri, G.; Castello, I.; Aiello, Dalia; Polizzi, G.

doi:10.1007/s10526-011-9423-1

Cited by 31 publications

(13 citation statements)

References 31 publications

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“…Furthermore, it has been successfully used for the biological control of many plant pathogens through chemiotropic mycoparasitic interactions with fungal or bacterial organisms as a target (Vitale et al 2012;Sofo et al 2004). On the other hand, to date, studies concerning the use of T22 to control plant viral diseases are unknown.…”

Section: Discussionmentioning

confidence: 99%

Beneficial effects of Trichoderma harzianum T-22 in tomato seedlings infected by Cucumber mosaic virus (CMV)

et al. 2014

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The study of the biochemical and molecular mechanisms deriving from the host-pathogen-antagonist interaction is essential to understand the\ud dynamics of infectious processes and can be useful for the development of new strategies to control phytopathogens, particularly viruses, against which chemical treatments have no effect. In this work, we demonstrate the ability of the rhizospheric fungus Trichoderma harzianum strain T-22 (T22) to induce defense responses in tomato (Solanum lycopersicum var. cerasiforme) against Cucumber mosaic virus (CMV, family Bromoviridae, genus Cucumovirus) strain Fny. A granule formulation containing T22 was used for treating the plants before, simultaneously or after the CMV inoculation, in order to study the molecular and biochemical aspects of the interaction between T22 and tomato against the virus. Reactive oxygen species (ROS) and the genes encoding for ROS scavenging enzymes were investigated. Histochemical analysis revealed a different increase in the superoxide anion (O2 ) and hydrogen peroxide (H2O2) content in plants infected by CMV alone or in the presence of T22, confirming the involvement of ROS in plant defense responses. Gene expression analysis suggested a definite improvement in oxidative stress when plants were treated with T22 after inoculation with CMV. In conclusion, our data indicate that Trichoderma harzianum T-22 stimulates the induction of tomato defense responses against\ud CMV, an action that implies the involvement of ROS, pointing towards its use as a treatment rather than as a preventive measure

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Section: Discussionmentioning

confidence: 99%

Beneficial effects of Trichoderma harzianum T-22 in tomato seedlings infected by Cucumber mosaic virus (CMV)

et al. 2014

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“…Because only preventative measures were found effective for Calonectria disease control (9), chemical control would always be adopted in association with good nursery practices, including reduction of primary inoculum, removal of infected plants, and utilization of uncontaminated potting medium. Moreover, the use of other sustainable strategies as well, such as soil solarization (34) or biological control agents (45), could improve disease control.…”

Section: Discussionmentioning

confidence: 99%

“…The fungicides employed in these experiments were selected based on preliminary data obtained according to a reliable red clover method for screening disease control measures, used in a previous study (45). Eleven fungicides were tested in three nursery experiments for ability to control artificial infections caused by C. morganii and C. pauciramosa on bottlebrush cuttings and feijoa seedlings, respectively.…”

Section: Methodsmentioning

confidence: 99%

Effects of Fungicide Treatments for the Control of Epidemic and Exotic Calonectria Diseases in Italy

et al. 2013

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Aiello, D., Cirvilleri, G., Polizzi, G., and Vitale, A. 2013. Effects of fungicide treatments for the control of epidemic and exotic Calonectria diseases in Italy. Plant Dis. 97:37-43.The efficacy of 11 fungicides was evaluated for the control of Calonectria infections on bottlebrush (Callistemon "Masotti") and feijoa (Acca sellowiana), with special emphasis on Calonectria pauciramosa and C morganii, which are the most destructive species in Italian ornamental nurseries. Three nursery experiments were performed with the selected fungicides in order to determine their ability to prevent leaf spot caused by C. morganii on bottlebrush and leaf spot and crown and root rot caused by C. pauciramosa on bottlebrush and feijoa. All fungicides were effective in reducing disease infections, except for cyproconazole, propamocarb + fosetyl-Al, and K phosphite that were the least effective in reducing C. morganii leaf spot. In contrast, K phosphite proved more effective in reducing crown and root rot caused by C. pauciramosa. Fungicides were also evaluated in growthcabinet experiments for their ability to reduce incidence and severity of leaf spot on bottlebrush caused by the exotic pathogens C. pseudomexicana, C tunisiana, C. pollzzii, and C. mexicana. Copper hydroxide, fosetyl-Al, prochloraz, prochloraz + cyproconazole, and tebuconazole were always effective in reducing Calonectria leaf spot on bottlebrush. However, some differences in levels of control might be attributable to Calonectria isolate. Overall, this study clearly indicates that new fungicides can be employed for chemical management of Calonectria infections in ornamental nurseries.

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“…In detail, the most effective isolates in bioassays were T. atroviride P1 and T. reesei T34, which strongly reduced green mold decay. Several species of Trichoderma are well-documented mycoparasites and successfully used against a wide range of plant pathogenic fungi (Howell, 2003;Vinale et al, 2008;Vitale et al, 2012a). Strains of T. harzianum have also been reported to be effective against diseases caused by postharvest pathogens (Elad et al, 1993;Hong et al, 1998;Sivakumar et al, 2000;Batta, 2007) including P. digitatum on citrus Abo-Elnaga (2013).…”

Section: Discussionmentioning

confidence: 99%

“…They are used against soil-borne fungi such as Calonectria, Fusarium, Pythium, Rhizoctonia and Sclerotinia (Fravel, 2005;Vitale et al, 2012a), but also to control postharvest pathogens, including Aspergillus spp., Botrytis cinerea, Monilia fructigena, P. expansum, Rhizopus stolonifer on apples, grapes, peaches, pears and strawberries (Hong et al, 1998;Batta, 2007;Senthil et al, 2011;Vitale et al, 2012b), Colletotrichum gloeosporioides and Botryodiplodia theobromae on rambutan fruits (Sivakumar et al, 2000) and P. digitatum on orange fruits (Borrás and Aguilar, 1990). Trichoderma spp.…”

Section: Introductionmentioning

confidence: 99%

Enhanced control of postharvest citrus fruit decay by means of the combined use of compatible biocontrol agents

et al. 2015

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Evaluation of Trichoderma harzianum strain T22 as biological control agent of Calonectria pauciramosa

Cited by 31 publications

References 31 publications

Beneficial effects of Trichoderma harzianum T-22 in tomato seedlings infected by Cucumber mosaic virus (CMV)

Beneficial effects of Trichoderma harzianum T-22 in tomato seedlings infected by Cucumber mosaic virus (CMV)

Effects of Fungicide Treatments for the Control of Epidemic and Exotic Calonectria Diseases in Italy

Enhanced control of postharvest citrus fruit decay by means of the combined use of compatible biocontrol agents

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