Biocontrol mechanisms of Trichoderma harzianum against soybean charcoal rot caused by Macrophomina phaseolina

Khaledi, Nima; Taheri, Parissa

doi:10.1515/jppr-2016-0004

Cited by 79 publications

(43 citation statements)

References 53 publications

(49 reference statements)

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“…Mayo et al (2015) recorded up regulation of seven defense related genes including glucanase during Trichoderma induced resistance against Rhizoctonia solani in beans. Two isolates of T. harzianum, T7 and T14 exhibited elicitor activities and suppressed Macrophomina phaseolina caused charcoal rot of soybean by augmenting activities of peroxidase and phenolics (Khaledi and Taheri 2016).…”

Section: Discussionmentioning

confidence: 99%

Systemic protection against pearl millet downy mildew disease induced by cell wall glucan elicitors from Trichoderma hamatum UOM 13

Lavanya¹,

Niranjan-Raj²,

Nayaka³

et al. 2017

Journal of Plant Protection Research

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The obligate oomycete Sclerospora graminicola (Sacc.) Schroet, is the incitant of downy mildew disease, which is the main constraint in pearl millet production worldwide. Different elicitors from Trichoderma hamatum UOM 13, e.g. mycelial extract and cell wall glucans, were assessed for their resistance elicitation efficiency and the possible underlying mechanisms. Both mycelial extract and cell wall glucans of T. hamatum UOM 13 positively influenced seed quality parameters of pearl millet, significantly enhanced seed germination and seedling vigor in comparison to the untreated control. Seed priming with cell wall glucan elicitors of T. hamatum UOM 13 suppressed downy mildew on susceptible pearl millet seedlings under greenhouse conditions by induction of systemic host resistance. Of the different elicitor delivery methods tested, transplant root dip was more effective than seed treatment and foliar spray. A combination of transplant root dip + seed treatment + foliar spray was significantly more effective than the single delivery methods. The induced resistance corresponded to up regulation of genes of important defense proteins upon pathogen inoculation. Transcripts of genes of defense enzymes glucanase, phenylalanine ammonia lyase, peroxidase and polyphenoloxidase were significantly increased due to the T. hamatum UOM elicitor effect. Expression of hydroxyproline-rich glycoprotein genes, known to play an important role in cell wall cross-linking, were also up regulated in response to T. hamatum UOM cell wall glucan treatment. This study emphasizes the role of T. hamatum UOM as a potential elicitor of downy mildew resistance in pearl millet and presents novel insights into the involvement of important defense proteins mediating such as resistance trigger.

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Section: Discussionmentioning

confidence: 99%

Systemic protection against pearl millet downy mildew disease induced by cell wall glucan elicitors from Trichoderma hamatum UOM 13

Lavanya¹,

Niranjan-Raj²,

Nayaka³

et al. 2017

Journal of Plant Protection Research

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“…Among the seed treatment alone, Seed treatment with T. harzianum (T 1 ) was more effective and yielded 35.34% disease incidence and 45.63% disease reduction followed by seed treatment of P. fluorescens (T 2 ), As regards to soil application alone, soil application of T. harzianum(T 4 ) was more effective and yielded 40.80% disease incidence and 37.23% disease reduction followed by soil application of P. fluorescens (T 5 ). Khaledi and Taheri (2016) reported the biological control capability of 11 Trichoderma spp. isolates against M. phaseolina.…”

Section: Root Nodules Per Plantmentioning

confidence: 99%

Management of Dry Root Rot [Macrophomina phaseolina (Tassi.) Goid] of Mungbean (Vigna radiata L.) through Bioagents and Bio-fertilizer In vivo

Kumar

Kumhar

Meena

et al. 2020

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Bio-control agents and bio-fertilizer minimized the root rot incidence, increased percent inhibition, increased grain yield and nodulation in mungbean significantly as compared to control. The minimum 13.50% disease incidence, maximum 79.23% inhibition of dry root rot, maximum grain yield of 14.8q/ha and maximum 24 nodules/plant were observed in the treatment T13. Where T. harzianum in combination with Rhizobium was used as seed treatment and soil application followed by the treatment(T14) where P. fluorescens was used in combination with Rhizobium (18.50% disease incidence, 71.54% disease inhibition,13.4q/ha grain yield and 21 nodules/plant. used as seed treatment and soil application.

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“…Some microorganisms act as phytopathogen controllers. This is the case for species of the genus Trichoderma, which parasitize and successfully control Sclerotinia [228,229], Fusarium [230], Verticillium [231], and Macrophomina [232] fungal species, among others, and show nematicidal activity against gall-forming Meloidogyne species [233][234][235]. In addition, the evaluation of functional traits of mycorrhizal, rhizospheric, or endophytic species has identified species with high potential to promote plant growth.…”

Section: Why Should We Know About Microbial Diversity?mentioning

confidence: 99%

Microbial Diversity: The Gap between the Estimated and the Known

Vitorino

Bessa

2018

Diversity

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Abstract:The ecological and biotechnological services that microorganisms provide to the planet and human society highlight the need to understand and preserve microbial diversity, which is widely distributed, challenging the severity of certain environments. Cataloging this diversity has also challenged the methods that are currently used to isolate and grow microorganisms, because most of the microbiota that are present in environmental samples have been described as unculturable. Factors such as geographic isolation and host preference also hinder the assessment of microbial diversity. However, prejudiced historical practices, including the prioritization of some species of microorganisms merely because they cause diseases, have long shifted research on fungi and bacteria towards medically relevant microorganisms. Thus, most microorganisms that inhabit the planet are still unknown, as is the potential of these species. Current estimates allow us to predict that the diversity of microorganisms that are present in the various terrestrial ecosystems is enormous. However, understanding this diversity is a challenge for the future of microbial ecology research.

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Biocontrol mechanisms of Trichoderma harzianum against soybean charcoal rot caused by Macrophomina phaseolina

Cited by 79 publications

References 53 publications

Systemic protection against pearl millet downy mildew disease induced by cell wall glucan elicitors from Trichoderma hamatum UOM 13

Systemic protection against pearl millet downy mildew disease induced by cell wall glucan elicitors from Trichoderma hamatum UOM 13

Management of Dry Root Rot [Macrophomina phaseolina (Tassi.) Goid] of Mungbean (Vigna radiata L.) through Bioagents and Bio-fertilizer In vivo

Microbial Diversity: The Gap between the Estimated and the Known

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