Crown gall caused by Agrobacterium tumefaciens species complex: a novel nursery disease of Tectona grandis in Brazil

Borges, R. C. F.; Rossato, Maurício; Albuquerque, Greecy Mirian Rodrigues; Ferreira, M. A.; Brasileiro, Ana Cristina Miranda; Fonseca, M. E. N.; Boiteux, L. S.

doi:10.1007/s42161-018-00211-4

Cited by 8 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although most of the genus Agrobacterium ’s members are associated with plants and play crucial roles in plant growth and development [ 41 ], a study reported recently that Ag . tumefaciens species complex could cause crown gall disease in teak nursery clones [ 9 ]. Based on our investigation, Agrobacterium sp.…”

Section: Discussionmentioning

confidence: 99%

“…Although teak is a pest-resistant plant and its microbial diseases are relatively rare, some microbes have been reported occasionally as causative agents of various teak diseases, such as wilt disease caused by Ceratocystis fimbriata [ 7 ], brown leaf spot disease caused by Alternaria alternata [ 8 ], crown gall disease caused by Agrobacterium tumefaciens species complex [ 9 ], and root collar rot disease caused by Kretzschmaria zonata [ 10 ]. These emerging diseases of teak often occur during the nursery stage (the most critical step for long-lived teak), where inappropriate growth conditions, such as insufficient drainage, high humidity, and soil-borne pathogenic infestation are inducing factors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Teak (Tectona grandis) Seedling Growth by Rhizosphere Microbes: A Sustainable Way to Optimize Agroforestry

Chaiya

Gavinlertvatana²,

Teaumroong

et al. 2021

Microorganisms

View full text Add to dashboard Cite

With its premium wood quality and resistance to pests, teak is a valuable tree species remarkably required for timber trading and agroforestry. The nursery stage of teak plantation needs critical care to warrant its long-term productivity. This study aimed to search for beneficial teak rhizosphere microbes and assess their teak-growth-promoting potentials during nursery stock preparation. Three teak rhizosphere/root-associated microbes, including two teak rhizobacteria (a nitrogen-fixing teak root endophyte-Agrobacterium sp. CGC-5 and a teak rhizosphere actinobacterium-Kitasatospora sp. TCM1-050) and an arbuscular mycorrhizal fungus (Claroideoglomus sp. PBT03), were isolated and used in this study. Both teak rhizobacteria could produce in vitro phytohormones (auxins) and catalase. With the pot-scale assessments, applying these rhizosphere microbes in the form of consortia offered better teak-growth-promoting activities than the individual applications, supported by significantly increased teak seedling biomass. Moreover, teak-growth-promoting roles of the arbuscular mycorrhizal fungus were highly dependent upon the support by other teak rhizobacteria. Based on our findings, establishing the synergistic interactions between beneficial rhizosphere microbes and teak roots was a promising sustainable strategy to enhance teak growth and development at the nursery stage and reduce chemical inputs in agroforestry.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing Teak (Tectona grandis) Seedling Growth by Rhizosphere Microbes: A Sustainable Way to Optimize Agroforestry

Chaiya

Gavinlertvatana²,

Teaumroong

et al. 2021

Microorganisms

View full text Add to dashboard Cite

show abstract

“…These plants become systemically infected when infection occurs. In field crops, galls have been observed such as cotton, tomatoes, bean, and alfalfa but this does affect so much economically (Borges et al, 2019). The causal organism of crown gall is Agrobacterium tumefaciens, which is gram-negative bacteria and normally causes symptoms on roots.…”

Section: Examples Of Biological Control Of Bacterial Diseasesmentioning

confidence: 99%

A Critical Review of Research on Exploitation of Microbial Antagonists for the Control of Bacterial Diseases in Crop Plants

Malik¹,

Rehman²,

Naqvi³

et al. 2021

Pak. J. Phytopathol.

View full text Add to dashboard Cite

“…Plants infected with the disease have a weak yellow shape, tumors, and a decreased fruit yield and ornamental value; the disease may even lead to plant death ( Fuller et al, 2017 ). It is reported that crown gall disease is prevalent abroad, and it is also widely distributed in some northern provinces of China, such as Hebei, Henan, Shandong, Jilin, etc., causing grapevine, blueberries, Tectona grandis (teak), and cherries to be susceptible, with the highest incidence in nurseries reached 92%, causing severe economic losses ( Alippi, Lopez & Balatti, 2010 ; Kuzmanović et al, 2018 ; Borges et al, 2019 ; Yan et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

The antibacterial mechanism of phenylacetic acid isolated from Bacillus megaterium L2 against Agrobacterium tumefaciens

Pan

Yang

Xie

et al. 2022

PeerJ

View full text Add to dashboard Cite

Background Agrobacterium tumefaciens T-37 can infect grapes and other fruit trees and cause root cancer. Given the pollution and damage of chemical agents to the environment, the use of biological control has become an important area of focus. Bacillus megaterium L2 is a beneficial biocontrol strain isolated and identified in the laboratory, which has a good antibacterial effect on a variety of plant pathogens. The antibacterial metabolites of L2 were separated and purified to obtain a bioactive compound phenylacetic acid (PAA). Methods The potential antibacterial mechanism of PAA against A. tumefaciens T-37 strain was determined by relative conductivity, leakage of nucleic acids, proteins, and soluble total sugars, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and reactive oxygen species (ROS). Results PAA showed good antibacterial activity against strain A. tumefaciens T-37 with IC50 of 0.8038 mg/mL. Our data suggested that after treatment with PAA, the relative conductivity, nucleic acid, protein, and total soluble sugar of T-37 were increased significantly compared with the chloramphenicol treatment group and the negative treatment group. The total protein synthesis of T-37 cells was inhibited, the consumption of phosphorus decreased with the increase of incubation time, and the content of ROS was significantly higher than that in the negative treatment group. Meanwhile, the activity of two key enzymes (MDH and SDH) involved in the tricarboxylic acid cycle (TCA cycle) decreased. In addition, T-37 cells were found to be damaged by scanning electron microscopy observation. Our results showed that PAA can destroy cell membrane integrity, damage cell structures, affect cell metabolism, and inhibit protein synthesis to exert an antibacterial effect. Conclusions We concluded that the mechanism of action of the PAA against strain T-37 might be described as PAA exerting antibacterial activity by affecting cell metabolism, inhibiting protein synthesis, and destroying cell membrane integrity and cell ultrastructure. Therefore, PAA has a promising application prospect in the prevention and treatment of root cancer disease caused by A. tumefaciens.

show abstract

Crown gall caused by Agrobacterium tumefaciens species complex: a novel nursery disease of Tectona grandis in Brazil

Cited by 8 publications

References 1 publication

Enhancing Teak (Tectona grandis) Seedling Growth by Rhizosphere Microbes: A Sustainable Way to Optimize Agroforestry

Enhancing Teak (Tectona grandis) Seedling Growth by Rhizosphere Microbes: A Sustainable Way to Optimize Agroforestry

A Critical Review of Research on Exploitation of Microbial Antagonists for the Control of Bacterial Diseases in Crop Plants

The antibacterial mechanism of phenylacetic acid isolated from Bacillus megaterium L2 against Agrobacterium tumefaciens

Contact Info

Product

Resources

About