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Advances in Trichoderma—Systemically Induced Plant Resistance and Synergistic Biocontrol with...
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Advances in Trichoderma—Systemically Induced Plant Resistance and Synergistic Biocontrol with Consortia of Trichoderma and Other Organisms 2.0

A special issue of Journal of Fungi (ISSN 2309-608X). This special issue belongs to the section "Fungi in Agriculture and Biotechnology".

Deadline for manuscript submissions: closed (20 April 2024) | Viewed by 4118

Special Issue Editor

Prof. Dr. Jie Chen

E-Mail Website
Guest Editor
School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
Interests: biological control of plant diseases; microbial engineering; Trichoderma
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Trichoderma species are well-known microbes worldwide. They are opportunistic fungi with beneficial and pathogenic functions depending on the host’s physiological status. Trichoderma has demonstrated outstanding traits in the biological control of plant diseases, the promotion of plant growth and soil bioremediation, etc. Focused studies in recent years revealed that Trichoderma launches the systemic or long-lasting control of plant diseases, mainly relying on signalling transduction for host SAR (systemic acquired resistance), ISR (induced systemic resistance) or both across plant tissues or plant growth seasons. Trichoderma elicitors, as a MAMP (microbes-associated molecular pattern), recognize host plant receptors or targets which are usually localized in the root cortex. Engineered fusions of elicitor proteins sourced from Trichoderma can develop a novel plant-immunity-activating protein against plant diseases. Consortia of Trichoderma and other kinds of microbes, such as biocontrol bacteria and entomopathogenic fungi, would lead to synergistic and stable control effects against a wide range of plant diseases and insect infection. Co-culturing Trichoderma and Bacillus species is another method of generating new or upregulated microbial metabolites produced from mutual interactions in the same medium, consequently leading to highly effective control against plant diseases and plant growth improvement. The miRNA is involved in the regulation of functional gene expression in Trichoderma itself, and miRNA cross-kingdom transduction occurs in the interaction between Trichoderma and the host plant, which thereby reprograms plant gene expression more available to control plant diseases. Moreover, endophytic Trichoderma species and endophytes induced by Trichoderma within the plant and rhizosphere were demonstrated to make significant contributions to the systemic induction of plant resistance against a range of plant diseases. To date, the understanding of genome-wide integrated regulation mechanism targeting multi-layer Trichoderma–pathogen–plant interactions, a significant basis at improving plant-induced defense, has been still unknown so far.

Prof. Dr. Jie Chen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Fungi is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Trichoderma
  • systemic acquired resistance
  • induced systemic resistance
  • microbes-associated molecular pattern
  • co-culture
  • consortia

Published Papers (3 papers)

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Research

17 pages, 7919 KiB  
Article
Trichoderma harzianum Cellulase Gene thph2 Affects Trichoderma Root Colonization and Induces Resistance to Southern Leaf Blight in Maize
by Bo Lang and Jie Chen
J. Fungi 2023, 9(12), 1168; https://doi.org/10.3390/jof9121168 - 04 Dec 2023
Viewed by 1055
Abstract
Trichoderma, widely distributed all over the world, is commonly found in soil and root ecosystems. It is a group comprising beneficial fungi that improve plant disease resistance and promote plant growth. Studies have shown that Trichoderma cellulases can also improve plant disease [...] Read more.
Trichoderma, widely distributed all over the world, is commonly found in soil and root ecosystems. It is a group comprising beneficial fungi that improve plant disease resistance and promote plant growth. Studies have shown that Trichoderma cellulases can also improve plant disease resistance. Based on previous studies, we reported that a C6 zinc finger protein (Thc6) regulates two cellulase genes, thph1 and thph2, to induce ISR responses in plants. Therefore, in this study, we focused on the role of thph2 in the colonization of maize roots by T. harzianum and the induction of systemic resistance against southern leaf blight. The results showed that thph2 had a positive regulatory effect on the Trichoderma colonization of maize roots. After the root was treated with Trichoderma, the leaf defense genes AOS, LOX5, HPL, and OPR1 were expressed to resist the attack of Cochliobolus heterostrophus. The pure Thph2 protein also resulted in a similar induction activity of the AOS, LOX5, HPL, and OPR1 expression in maize roots, further demonstrating that thph2 can induce plant defense responses and that signal transduction occurs mainly through the JA signaling pathway. Full article
(This article belongs to the Special Issue Advances in Trichoderma—Systemically Induced Plant Resistance and Synergistic Biocontrol with Consortia of Trichoderma and Other Organisms 2.0)
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12 pages, 816 KiB  
Article
Statistical Experimental Design as a New Approach to Optimize a Solid-State Fermentation Substrate for the Production of Spores and Bioactive Compounds from Trichoderma asperellum
by Rayhane Hamrouni, Flor Regus, Magalie Claeys-Bruno, Anne-Marie Farnet Da Silva, Thierry Orsière, Isabelle Laffont-Schwob, Jean-Luc Boudenne and Nathalie Dupuy
J. Fungi 2023, 9(11), 1123; https://doi.org/10.3390/jof9111123 - 20 Nov 2023
Cited by 1 | Viewed by 1008
Abstract
Managing organic agricultural wastes is a challenge in today’s modern agriculture, where the production of different agricultural goods leads to the generation of large amounts of waste, for example, olive pomace and vine shoot in Mediterranean Europe. The discovery of a cost-effective and [...] Read more.
Managing organic agricultural wastes is a challenge in today’s modern agriculture, where the production of different agricultural goods leads to the generation of large amounts of waste, for example, olive pomace and vine shoot in Mediterranean Europe. The discovery of a cost-effective and environment-friendly way to valorize such types of waste in Mediterranean Europe is encouraged by the European Union regulation. As an opportunity, organic agricultural waste could be used as culture media for solid-state fermentation (SSF) for fungal strains. This methodology represents a great opportunity to produce secondary metabolites like 6-pentyl-alpha-pyrone (6-PP), a lactone compound with antifungal properties against phytopathogens, produced by Trichoderma spp. Therefore, to reach adequate yields of 6-PP, lytic enzymes, and spores, optimization using specific agricultural cheap local wastes from Southeastern France is in order. The present study was designed to show the applicability of an experimental admixture design to find the optimal formulation that favors the production of 6-PP. To conclude, the optimized formulation of 6-PP production by Trichoderma under SSF contains 18% wheat bran, 23% potato flakes, 20% olive pomace, 14% olive oil, 24% oatmeal, and 40% vine shoots. Full article
(This article belongs to the Special Issue Advances in Trichoderma—Systemically Induced Plant Resistance and Synergistic Biocontrol with Consortia of Trichoderma and Other Organisms 2.0)
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15 pages, 2991 KiB  
Article
Using Trichoderma asperellum to Antagonize Lasiodiplodia theobromae Causing Stem-End Rot Disease on Pomelo (Citrus maxima)
by Nguyen Quoc Khuong, Dinh Bich Nhien, Le Thi My Thu, Nguyen Duc Trong, Phan Chan Hiep, Vo Minh Thuan, Le Thanh Quang, Le Vinh Thuc and Do Thi Xuan
J. Fungi 2023, 9(10), 981; https://doi.org/10.3390/jof9100981 - 29 Sep 2023
Cited by 1 | Viewed by 1402
Abstract
Stem-end rot disease has been causing damage to the production of pomelos in Vietnam. The cur-rent study aimed to (i) isolate fungal pathogens causing pomelo stem-end rot disease (PSERD) and (ii) discover Trichoderma spp. that had an antagonistic ability against pathogens under in [...] Read more.
Stem-end rot disease has been causing damage to the production of pomelos in Vietnam. The cur-rent study aimed to (i) isolate fungal pathogens causing pomelo stem-end rot disease (PSERD) and (ii) discover Trichoderma spp. that had an antagonistic ability against pathogens under in vitro conditions. Fungi causing PSERD were isolated from pomelo fruits with symptoms of stem-end rot disease and collected from pomelo farms in Ben Tre province, Vietnam. Moreover, 50 fungal strains of Trichoderma spp. also originated from soils of these pomelo farms in Ben Tre province and were dual-tested with the fungal pathogen on the PDA medium. The results demonstrated that 11 pathogenic fungi causing PSERD were isolated from the fruit and showed mycelial growth of roughly 5.33–8.77 cm diameter at 72 h after inoculation. The two fungi that exhibited the fast-est growth, namely, S-P06 and S-P07, were selected. ITS sequencing of the S-P06 and S-P07 fungi resulted in Lasiodiplodia theobromae. All the 50 Trichoderma spp. strains were allowed to antago-nize against the S-P06 and S-P07 strains under in vitro conditions. The greatest antagonistic effi-ciency was found in Trichoderma spp. T-SP19 at 85.4–86.2% and T-SP32 at 84.7–85.4%. The two antagonists were identified as Trichoderma asperellum T-SP19 and T-SP32. The selected strains of Trichoderma asperellum were potent as a biological control for fruit plants. Full article
(This article belongs to the Special Issue Advances in Trichoderma—Systemically Induced Plant Resistance and Synergistic Biocontrol with Consortia of Trichoderma and Other Organisms 2.0)
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