Biological control of fusarium root rot of Indian mulberry (Morinda officinalis How.) with consortia of agriculturally important microorganisms in Viet Nam

Abstract

Background: Fusarium root rot disease in Indian mulberry (Morinda officinalis How.) (FRRBK), caused by Fusarium proliferatum (FP), is widespread and responsible for serious economic losses in Viet Nam. The efficacy of a new bioproduct named MICROTECH-1(NL) is compared with other commercial products for suppression of FP under in vitro, pot, nursery as well as in the field conditions. Results: In in vitro antagonistic assay, MICROTECH-1(NL) significantly inhibited the mycelial growth of FP (72.38%). Under pot conditions, the efficacy of all the bio-products was significantly higher when applied prior to pathogen inoculation. The disease severity of treatments with double application of MICROTECH-1(NL) (applied both in the nursery and in the pot soil) was only 15.56%, significantly lower than control (80%). Thus, the application of MICRO-TECH-1(NL) significantly reduced the incidence of FP and markedly increased the number of plant beneficial bacteria and actinobacteria in rhizoplane of M. officinalis compared to untreated control. In the field conditions, double application of MICROTECH-1(NL) (both in the nursery and in the field soils) significantly decreased disease severity in comparison to single application in nursery or field. Conclusion: The most effective treatment was double application of MICROTECH-1(NL), which significantly reduced the disease severity and FP population in roots of M. officinalis and increased the population of plant beneficial microbes.

RETRACTED: Soil Microbiome Manipulation Gives New Insights in Plant Disease-Suppressive Soils from the Perspective of a Circular Economy: A Critical Review

“…There are many agricultural practices that can contribute to improve the circularity models of a sustainable agriculture [338]. Among them, the production of tailored composts and bio-organic fertilizers from agro-wastes, agricultural residues and agro-bioenergy co/by-products for controlling pathogens can be an interesting change of perspective by transforming agricultural wastes into quality composts and bio-organic fertilizers to increase the soil's natural suppressiveness whenever the SOM content in soil is very low (less than 1%) or scarcely humified [339][340][341].…”

Endophytic Diaporthe Associated with Morinda officinalis in China

“…How. (Rutaceae) is a lianoid shrub, which is wildly cultivated in subtropical and tropical areas including China and Vietnam [ 18 , 19 , 20 ]. In China, this species is cultivated in Guangdong, Guangxi, Fujian, and Hainan Provinces as a traditional medicinal plant.…”

“…Up until today, several fungal diseases have been reported from M. officinalis in China. The black root rot disease caused by Lasiodiplodia pseudotheobromae in China [ 19 ] and Fusarium root rot caused by Fusarium proliferatum in Vietnam [ 20 ] are mostly reported diseases. However, there are no studies on endophytes associated with M. officinalis .…”

Whole Genome Sequencing Reveals Novel Insights about the Biocontrol Potential of Burkholderia ambifaria CF3 on Atractylodes lancea

“…As a green and environmentally friendly prevention and treatment method, biological control has gradually been applied in the A. lancea industry. Antagonistic microorganisms are a major weapon for controlling root rot [ 14 ]. These microorganisms can inhibit the growth and reproduction of pathogenic bacteria by competing for nutrients with pathogenic bacteria, occupying ecological niches, or producing antibacterial substances, thereby reducing the impacts of diseases on A. lancea .…”