Trichoderma hamatum can act as an inter-plant communicator of foliar pathogen infections by colonizing the roots of nearby plants: A new inter-plant “wired communication”

Poveda, Jorge; Rodríguez, Víctor M.; Abilleira, Rosaura; Velasco, Pablo

doi:10.1016/j.plantsci.2023.111664

Cited by 6 publications

(4 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reduced root secretions and increased saprophytic fungi in late stage of disease in susceptible pines could explain the higher abundance of T. hamatum in diseased hosts. Interestingly, T. hamatum has been reported to act as a biocontrol agent against soil pathogens and induces systemic resistance to foliar pathogens [68]. In our study, we observed that the infection rate of ectomycorrhizal fungi was significantly higher in healthy P. thunbergii trees compared to diseased ones.…”

Section: Discussionsupporting

confidence: 49%

Effects of Pine Wilt Disease on Rhizosphere Microbiota and Fine Root Fungi: Insights into Enzyme Activity, Ectomycorrhizal Infection and Microbial Composition

Jiao,

Gao,

Liao

et al. 2023

Forests

View full text Add to dashboard Cite

Pine wilt disease (PWD), caused by the pine wood nematode (PWN) Bursaphelenchus xylophilus, poses a severe threat to pine forests worldwide. However, the understanding of the impact of PWD on the host microbiome remains limited. This study aimed to investigate the structure and function of the fungal community associated with Pinus thunbergii fine roots and the rhizosphere fungi and bacteria of the tree naturally infected by PWN and the healthy tree. We employed high-throughput sequencing in conjunction with functional prediction tools (Functional Annotation of Prokaryotic Taxa and Fungi Functional Guild) and soil enzyme activity measurements between the two treatments (disease vs. health). The results showed that PWD significantly decreased the activity of β-cellobiosidase (CEL) and β-glucosidase (GLS) enzymes involved in carbon cycling in the rhizosphere (p < 0.05). However, PWD did not alter the diversity of rhizosphere bacteria and fine root fungi, but it did cause a significant decrease in the richness of rhizosphere fungi (p < 0.05). Moreover, PWD significantly reduced the abundance of Actinobacteria and genus Gaiella (p < 0.05). Functionally, bacterial intracellular parasites exhibited a higher abundance in the rhizosphere after PWN infection, whereas ureolysis showed a lower abundance (p < 0.05). Fungal saprotroph–symbiotroph exhibited a higher abundance in the rhizosphere after PWN infection, whereas symbiotroph showed a lower abundance (p < 0.05). Additionally, it led to a significant reduction in the infection rate of ectomycorrhizal fungi (p < 0.05). Infected host fine root exhibited higher abundance of pathotroph–symbiotroph, whereas symbiotroph had a lower abundance (p < 0.05). These findings provided valuable insights into the interactions between pine wilt disease, plant microbial communities, and soil enzyme activity.

show abstract

Section: Discussionsupporting

confidence: 49%

Effects of Pine Wilt Disease on Rhizosphere Microbiota and Fine Root Fungi: Insights into Enzyme Activity, Ectomycorrhizal Infection and Microbial Composition

Jiao,

Gao,

Liao

et al. 2023

Forests

View full text Add to dashboard Cite

show abstract

“…The presence of Trichoderma within the periphyton soil of asparagus was significant (P < 0.05) in all three generations of asexually propagated GeB seedlings. Notably, although Trichoderma was present in increasing and decreasing genera, there was a significant difference with the increasing genera, including T. hamatum antagonizing phytopathogenic bacteria ( Poveda et al., 2023 ), which can cause soft rot of Gastrodia ( Poveda et al., 2023 ), and the decreasing genera, including T. atroviride , a plant probiotic that can promote plant health and nutrition ( Contreras-Cornejo et al., 2018 ), increase insect resistance of maize leaves, and inhibit the production of wilt disease in maize crops ( Coninck et al., 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Decrease in beneficial bacteria and increase in harmful bacteria in Gastrodia seedlings and their surrounding soil are mainly responsible for degradation of Gastrodia asexual propagation

Wang,

Gao,

Zang

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

IntroductionAsexual reproduction of Gastrodia elata Bl. f. glauca S. chow (GeB) produces degeneration with increasing number of GeB. Therefore, we analyzed the microorganisms of GeB seedlings and surrounding soil by Illumina Miseq high-throughput sequencing technology.MethodsIn this study, Illumina Miseq high-throughput sequencing technology was applied to analyze the types and quantities of GeB seedlings and surrounding soil microorganisms in the first to third generations of asexual reproduction, isolated and identified the dominant strains of GeB in the first to third generations and screened the antagonistic bacteria of its pathogenic fungi, and evaluated the effects of beneficial bacteria on the production performance of seedlings planted with GeB.ResultsWith an increase in the number of asexual reproductive generations, the number of pathogenic fungi and bacteria in GeB seedlings and the surrounding soil increased, and the number of beneficial fungi and bacteria decreased. Pseudomonas sp., Agrobacterium rhizomes, and Herbaspirillum hiltneri were isolated and identified in the first generation, and Trichoderma harzianum, Penicillium viridiatum, Fusarium oxysporum, and Novosphingobium sp. Were isolated and identified in the third generation. Antagonistic strains of the three pathogenic bacterial strains were screened. In conclusion, beneficial bacteria significantly improved the production performance of asexual reproductive seedlings planted with GeB.DiscussionIn conclusion, our findings suggested that the microorganisms of GeB seedlings and the surrounding soil change as the number of generations of GeB reproduction increases, disrupts the microecological balance of surrounding soil and endophytic microbiomes.This study provides a theoretical basis for the degradation of asexual reproduction in GeB.

show abstract

“…Thus, T. hamatum naturally increases the plant systemic defense mechanism. Through this mechanism, immunity against foliar infecting pathogens is attained [65].…”

Section: Antibacterial and Antifungal Activitymentioning

confidence: 99%

Trichoderma hamatum and Its Benefits

Lodi,

Peng,

Dong

et al. 2023

JoF

View full text Add to dashboard Cite

Trichoderma hamatum (Bonord.) Bainier (T. hamatum) belongs to Hypocreaceae family, Trichoderma genus. Trichoderma spp. are prominently known for their biocontrol activities and plant growth promotion. Hence, T. hamatum also possess several beneficial activities, such as antimicrobial activity, antioxidant activity, insecticidal activity, herbicidal activity, and plant growth promotion; in addition, it holds several other beneficial properties, such as resistance to dichlorodiphenyltrichloroethane (DDT) and degradation of DDT by certain enzymes and production of certain polysaccharide-degrading enzymes. Hence, the current review discusses the beneficial properties of T. hamatum and describes the gaps that need to be further considered in future studies, such as T. hamatum’s potentiality against human pathogens and, in contrast, its role as an opportunistic human pathogen. Moreover, there is a need for substantial study on its antiviral and antioxidant activities.

show abstract

Trichoderma hamatum can act as an inter-plant communicator of foliar pathogen infections by colonizing the roots of nearby plants: A new inter-plant “wired communication”

Cited by 6 publications

References 49 publications

Effects of Pine Wilt Disease on Rhizosphere Microbiota and Fine Root Fungi: Insights into Enzyme Activity, Ectomycorrhizal Infection and Microbial Composition

Effects of Pine Wilt Disease on Rhizosphere Microbiota and Fine Root Fungi: Insights into Enzyme Activity, Ectomycorrhizal Infection and Microbial Composition

Decrease in beneficial bacteria and increase in harmful bacteria in Gastrodia seedlings and their surrounding soil are mainly responsible for degradation of Gastrodia asexual propagation

Trichoderma hamatum and Its Benefits

Contact Info

Product

Resources

About