Antifungal activity of Streptomyces sp. SLR03 against tea fungal plant pathogen Pestalotiopsis theae

Marimuthu, S.; Karthic, Chinnusamy; Mostafa, Ashraf Abdel‐Fattah; Al‐Enazi, Nouf M.; Abdel-Raouf, Neveen; Sholkamy, Essam Nageh

doi:10.1016/j.jksus.2020.08.027

Cited by 31 publications

(21 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In vivo performance of actinomycetes against fungal phytopathogens are often associated with positive results, demonstrating inhibiting effects that consolidate its possible application as constituents of biopesticides for plant defense (166)(167)(168). However, the in vitro behavior may not always be reflected when evaluating the antagonistic effect in vivo.…”

Section: Biocontrol Promoting Actinomycetes As Biopesticidesmentioning

confidence: 99%

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

et al. 2022

View full text Add to dashboard Cite

The use of fertilizers and chemical pesticides promotes significant improvements in crop development, but some problems and risks associated with them limit their application. An alternative is using biological inputs based on microorganisms, increasing production while combining efficiency and sustainability. Actinomycetes are a group of bacteria belonging to the phylum Actinobacteria, recently re-named Actinobacteriota. They represent important microbial communities in the soils with increasing agricultural applications, especially in the biological control of insect-pest and plant disease and in plant growth promotion. Studies report their promising use as microbiological inoculants by exploring mechanisms to improve plant development, such as biological nitrogen fixation, phosphate solubilization, production of phytohormones, and other biocompounds. In addition, many species produce metabolic pathways that generate high-value antibiotics, extracellular enzymes and secondary metabolites other than antimicrobials, with potential in the control of phytopathogenic fungi, insects, and nematodes. These actinomycetes could be used to formulate novel bioinoculants composed of spores and/or mycelium. Considering that the research in this field is up-and-coming, with significant economic and environmental impacts in the future, this review aims to group the most relevant works that explore the biodiversity of actinomycetes, helping to develop inoculants and biodefensives for more productive and conscious agriculture.

show abstract

Section: Biocontrol Promoting Actinomycetes As Biopesticidesmentioning

confidence: 99%

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The antibacterial and antifungal activities are common traits found among actinomycetes strains [11,[17][18][19][20][21][22][23][24][25]. The biocontrol properties of Streptomyces and Nocardiopsis genera are mainly related to the release of extracellular metabolites, siderophores, and enzymes, with a broad antimicrobial spectrum [25][26][27].…”

Section: Discussionmentioning

confidence: 99%

“…Plants, through beneficial microorganism enlistment via root exudates, counteract the attacks of soil-borne pathogens [9,10]. Among these microorganisms, known as plant growth-promoting bacteria (PGPB), actinomycetes are an important source of bioactive and antimicrobial metabolites and control a wide range of phytopathogens [11]. Actinomycetes can be used as biostimulants, biopesticides, bioherbicides, and biological control agents [12,13], thanks to numerous agroactive compounds and through direct and indirect mechanisms [14].…”

Section: Introductionmentioning

confidence: 99%

Biocontrol of Soil-Borne Pathogens of Solanum lycopersicum L. and Daucus carota L. by Plant Growth-Promoting Actinomycetes: In Vitro and In Planta Antagonistic Activity

et al. 2021

View full text Add to dashboard Cite

Biotic stress caused by pathogenic microorganisms leads to damage in crops. Tomato and carrot are among the most important vegetables cultivated worldwide. These plants are attacked by several pathogens, affecting their growth and productivity. Fourteen plant growth-promoting actinomycetes (PGPA) were screened for their in vitro biocontrol activity against Solanum lycopersicum and Daucus carota microbial phytopathogens. Their antifungal activity was evaluated against Fusarium oxysporum f. sp. radicis-lycopersici (FORL) and Rhizoctonia solani (RHS). Antibacterial activity was evaluated against Pseudomonas syringae, Pseudomonas corrugata, Pseudomonas syringae pv. actinidiae, and Pectobacterium carotovorum subsp. carotovorum. Strains that showed good in vitro results were further investigated in vitro (cell-free supernatants activity, scanning electron microscope observations of fungal inhibition). The consortium of the most active PGPA was then utilized as biocontrol agents in planta experiments on S. lycopersicum and D. carota. The Streptomyces albidoflavus H12 and Nocardiopsis aegyptica H14 strains showed the best in vitro biocontrol activities. The diffusible and volatile compounds and cell-free supernatants of these strains showed both antifungal (in vitro inhibition up to 85%, hyphal desegregation and fungicidal properties) and antibacterial activity (in vitro inhibition >25 mm and bactericidal properties). Their consortium was also able to counteract the infection symptoms of microbial phytopathogens during in planta experiments, improving plant status. The results obtained highlight the efficacy of the selected actinomycetes strains as biocontrol agents of S. lycopersicum and D. carota.

show abstract

“…Actinobacteria are known to possess antifungal, insecticidal activity as well as many plant growth–promoting substances and enzymes which presents an untapped source of many potent bioactive microbial formulations in tea (Table 2). Marimuthu et al (2020) reported effective antagonistic activities of Streptomyces sp. SLR03 against tea PPF, Pestalotiopsis theae , and further analysis of the ethyl acetate extract using GC–MS chromatography spectrum confirms the presence of antifungal compound.…”

Section: Actinobacteria As Biotic and Abiotic Stress Relieversmentioning

confidence: 99%

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Borah

Hazarika

Thakur

2022

Journal of Applied Microbiology

View full text Add to dashboard Cite

Tea (Camellia sinensis (L) O. Kuntze) is a long-duration monoculture crop prone to several biotic (fungal diseases and insect pest) and abiotic (nutrient deficiency, drought and salinity) stress that eventually result in extensive annual crop loss. The specific climatic conditions and the perennial nature of the tea crop favour growth limiting abiotic factors, numerous plant pathogenic fungi (PPF) and insect pests. The review focuses on the susceptibility of tea crops to PPF/pests, drought, salinity and nutrient constraints and the potential role of beneficial actinobacteria in promoting tea crop health. The review also focuses on some of the major PPF associated with tea, such as Exobasidium vexans, Pestalotiopsis theae, Colletotrichum acutatum, and pests (Helopeltis theivora). The phylum actinobacteria own a remarkable place in agriculture due to the biosynthesis of bioactive metabolites that assist plant growth by direct nutrient assimilation, phytohormone production, and by indirect aid in plant defence against PPF and pests. The chemical diversity and bioactive significance of actinobacterial metabolites (antibiotics, siderophore, volatile organic compounds, phytohormones) are valuable in the agro-economy. This review explores the recent history of investigations in the role of actinobacteria and its secondary metabolites as a biocontrol agent and proposes a commercial application in tea cultivation.

show abstract

Antifungal activity of Streptomyces sp. SLR03 against tea fungal plant pathogen Pestalotiopsis theae

Cited by 31 publications

References 24 publications

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

Biocontrol of Soil-Borne Pathogens of Solanum lycopersicum L. and Daucus carota L. by Plant Growth-Promoting Actinomycetes: In Vitro and In Planta Antagonistic Activity

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Contact Info

Product

Resources

About