Antibacterial, anti-biofilm, and anti-virulence potential of tea tree oil against leaf blight pathogen Xanthomonas oryzae pv. oryzae instigates disease suppression

2022 ◽  
Author(s):  
Kumari Vishakha ◽  
Shatabdi Das ◽  
Sudip Kumar Das ◽  
Satarupa Banerjee ◽  
Arnab Ganguli
Keyword(s):  
Leaf Blight ◽  
Xanthomonas Oryzae ◽  
Disease Suppression ◽  
Tea Tree Oil ◽  
Tea Tree ◽  
Virulence Potential

scholarly journals Inhibitory Effects of Carbazomycin B Produced by Streptomyces roseoverticillatus 63 Against Xanthomonas oryzae pv. oryzae

2021 ◽  
Vol 12 ◽  
Author(s):  
Tingting Shi ◽  
Xin Guo ◽  
Jiali Zhu ◽  
Lingming Hu ◽  
Zhipeng He ◽  
...  
Keyword(s):  
Negative Impact ◽  
Fermentation Broth ◽  
Foliar Spray ◽  
Cell Surface Hydrophobicity ◽  
Surface Hydrophobicity ◽  
Leaf Blight ◽  
Xanthomonas Oryzae ◽  
Disease Suppression ◽  
Bacterial Leaf Blight ◽  
Structural Deformation

The present manuscript highlights the potential role of Streptomyces roseoverticillatus 63 (Sr-63) against Xanthomonas oryzae pv. oryzae (Xoo), which is the cause of a disastrous bacterial leaf blight disease with rice worldwide. The disease suppression was achieved under greenhouse conditions. A foliar spray of the fermentation broth of Sr-63 significantly reduced the leaf blight symptoms with rice in Xoo inoculated rice plants. Furthermore, we observed that the carbazomycin B, isolated from the fermentation broth of Sr-63, was demonstrated to have antibacterial activity against Xoo with a minimum inhibitory concentration (MIC) of 8 μg mL–1. The results indicated that carbzomycin B hampered the membrane formation of Xoo, reduced the production of xanthomonadin and extracellular polymeric substance (EPS). The fourier transform infrared spectroscopic (FT-IR) indicated that carbazomycin B changed the components of the cell membrane, then caused a change of the cell surface hydrophobicity of Xoo. Scanning electron microscopy revealed that the Xoo cells treated with carbazomycin B exhibited apparent structural deformation. The results also indicated that carbazomycin B had a negative impact on the metabolism of Xoo, carbazomycin B reduced the activity of malate dehydrogenase (MDH) activity and suppressed the protein expression of Xoo. Overall, our data suggests that Streptomyces roseoverticillatus 63 is a promising biocontrol agent that could be used to combat the bacterial leaf blight diseases of rice.

THE BACTERIAL MULTIPLE ANTIBIOTIC RESISTANT (MAR) PHENOTYPE LEADS TO INCREASED TOLERANCE TO TEA TREE OIL

Pathology ◽  
2001 ◽  
Vol 33 (2) ◽  
pp. 211-215 ◽  
Author(s):  
John E. Gustafson ◽  
Sean D. Cox ◽  
Yoon C. Liew ◽  
S. Grant Wyllie ◽  
John R. Warmington
Keyword(s):  
Tea Tree Oil ◽  
Antibiotic Resistant ◽  
Tea Tree

A new sesquiterpenoid from tea tree oil residue

Planta Medica ◽  
2015 ◽  
Vol 81 (05) ◽  
Author(s):  
S Liang ◽  
Z Ali ◽  
M Wang ◽  
IA Khan
Keyword(s):  
Tea Tree Oil ◽  
Tea Tree ◽  
Oil Residue

Addition of tea tree oil (Melaleuca alternifolia) in diet minimize biochemical disturbances in silver catfish Rhamdia quelen exposed to the antiparasitic amitraz

Aquaculture ◽  
2021 ◽  
pp. 736954
Author(s):  
Tamires R. dos Reis ◽  
Matheus D. Baldissera ◽  
Carine F. Souza ◽  
Bernardo Baldisserotto ◽  
Julia Corá Segat ◽  
...  
Keyword(s):  
Tea Tree Oil ◽  
Melaleuca Alternifolia ◽  
Tea Tree ◽  
Silver Catfish ◽  
Rhamdia Quelen

Tea tree oil attenuates cerebral damage in silver catfish (Rhamdia quelen) fed with an aflatoxin-contaminated diet

Aquaculture ◽  
2020 ◽  
Vol 523 ◽  
pp. 735223 ◽  
Author(s):  
Carine de Freitas Souza ◽  
Matheus Dellaméa Baldissera ◽  
Sharine Descovi ◽  
Pedro René Eslava-Mocha ◽  
Carla C. Zeppenfeld ◽  
...  
Keyword(s):  
Cerebral Damage ◽  
Tea Tree Oil ◽  
Tea Tree ◽  
Silver Catfish ◽  
Rhamdia Quelen

scholarly journals Evaluation of Effectiveness of a Toothpaste Containing Tea Tree Oil and Ethanolic Extract of Propolis on the Improvement of Oral Health in Patients Using Removable Partial Dentures

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4071
Author(s):  
Karolina Wiatrak ◽  
Tadeusz Morawiec ◽  
Rafał Rój ◽  
Patryk Kownacki ◽  
Aleksandra Nitecka-Buchta ◽  
...  
Keyword(s):  
Oral Health ◽  
Oral Hygiene ◽  
Ethanolic Extract ◽  
Plaque Index ◽  
Control Group ◽  
Oral Microbiota ◽  
Study Group ◽  
Tea Tree Oil ◽  
Tea Tree ◽  
Ethanolic Extract Of Propolis

The aim of this study was to evaluate the effect of toothpaste containing natural tea tree essential oil (TTO) and ethanolic extract of propolis (EEP), on microflora and selected indicators of oral health in patients using removable acrylic partial dentures. Fifty patients with varying conditions of hygiene were divided into two groups. The study group received the toothpaste with TTO and EEP, while the control group received the same toothpaste but without TTO and EEP. At the first visit, oral hygiene and hygiene of the prostheses were carried out. Control visits took place 7 and 28 days later and compared to baseline. Indexes like API (Approximal Plaque Index), mSBI (modified Sulcus Bleeding Index), OHI-s (simplified Oral Hygiene Index), and DPI (Denture Plaque Index) were assessed in three subsequent stages, and swabs were collected from floor of the mouth area to assess the microbiota. After 7 and 28 days of using the toothpaste with TTO and EEP, a statistically significant decrease of the examined indicator values were observed in the study group as compared to the values upon the initial visit. The number of isolated strains of microorganisms in the study group was decreased or maintained at the same level, whereas in the control group an increase in the number of isolated strains was observed. The observed stabilization of oral microbiota in patients from the study group confirms the beneficial activity of toothpaste containing EEP and TTO compared to the control group.

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