Effects of Serratia nematodiphila CT-78 on rice bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae

Khoa, Nguyễn Đắc; Giàu, Nguyễn Đặng Ngọc; Tuấn, Trần Quốc

doi:10.1016/j.biocontrol.2016.07.010

Cited by 34 publications

(15 citation statements)

References 43 publications

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“…As a result of the climate change and increase in temperature, infestation of the BLB disease caused by the Xoo pathogen is increased, particularly in China and Pakistan due to the favorable environmental conditions, resulting in great damage to rice crop [8]. Chemical control in the form of numerous chemicals and antibiotics has been used for treatment of BLB.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

et al. 2020

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Amongst serious biotic factors deteriorating crop yield, the most destructive pathogen of rice is Xanthomonas oryzae pv. oryzae (Xoo), which causes bacterial leaf blight (BLB) disease. This study involved targeted use of biogenic silver nanoparticles (AgNPs) to control BLB in order to cope with the disadvantages of chemical disease control. AgNPs were biologically synthesized from natively isolated Bacillus cereus strain SZT1, which was identified through 16S rRNA gene sequence analysis. Synthesis of AgNPs in bacterial culture supernatant was confirmed through UV-VIS spectroscopy. Fourier transform infrared spectroscopy (FTIR) confirmed that the existence of AgNPs was stabilized with proteins and alcoholic groups. X-ray diffraction (XRD) data revealed the crystalline nature and imaging with scanning electron microscopy (SEM) and transmission electron microscopy (TEM), showing the spherical shape of AgNPs with particle sizes ranging from 18 to 39 nm. The silver presence in AgNPs was further confirmed by energy dispersive spectra. Biogenic AgNPs showed substantial antibacterial activity (24.21 ± 1.01 mm) for Xoo. In a pot experiment, AgNPs were found to be effective weapons for BLB by significantly increasing the plant biomass with a decreased cellular concentration of reactive oxygen species and increased concentration of antioxidant enzyme activity.

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Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

et al. 2020

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“…Dramatically, resveratrol (1) showed the strongest antibacterial activity against Xoo (IC 50 11.67 ± 0.58 μg/mL) ( Table 2), and at 5 μg/mL, 25 μg/mL, and 100 μg/mL, the inhibiting percentage on Xoo growth was 24.66 ± 1.79, 75.84 ± 3.14, and 90.49 ± 0.28, respectively. For compounds (2)(3)(4)(5)(6), the inhibiting percentages on Xoo growth at 100 μg/mL were 89.39 ± 0.43, 78.89 ± 0.80, 82.76 ± 1.02, 54.30 ± 6.05, and 58.51 ± 3.11, respectively, and at 5 μg/mL were 16…”

Section: Antibacterial Activity Of Compounds (1-9) Against Xoomentioning

confidence: 99%

“…The chemical structures of three stilbenoids (1)(2)(3) and their derivatives (4)(5)(6)(7)(8)(9), di-hydro-resveratrol (4), di-hydro-oxyresveratrol (5), di-hydro-piceatannol (6), tri-methyl-resveratrol (7), tetra-methyloxyresveratrol (8), and tetra-methyl-piceatannol (9), were shown in Fig. 1.…”

Section: Structural Identification Of Three Stilbenoids (1-3) and Dermentioning

confidence: 99%

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Resveratrol inhibits the growth of Xanthomonas oryzae pv. oryzae and the metabolomic analysis

Luo

Guan

et al. 2019

Preprint

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Background Xanthomonas oryzae pv. oryzae ( Xoo ) can cause destructive bacterial leaf blight in rice. As an antibacterial, resveratrol may inhibit Xoo growth. This study focused on the potential structural-activity relationship of resveratrol and its derivatives against Xoo growth, and 1 H-NMR-based metabolomic analysis was applied to investigate the global metabolite changes in Xoo after resveratrol treatment.Results Resveratrol showed the strongest inhibitory effects on Xoo growth compared with its derivatives, which lacked double bonds (compounds 4 – 6 ) or hydroxyls were substituted with methoxyls (compounds 7 – 9 ). The IC 50 of resveratrol against Xoo growth was 11.67 ± 0.58 μg/mL. Results indicated that the double bond of resveratrol contributed to its inhibitory effects on Xoo growth, and hydroxyls were vital for this inhibition. Interestingly, resveratrol also significantly inhibited Xoo flagellum growth. Based on 1 H-NMR global metabolic analysis, a total of 30 Xoo metabolites were identified, the changes in the metabolic profile indicated that resveratrol could cause oxidative stress as well as disturb energy, purine, amino acid, and NAD + metabolism in Xoo , resulting in the observed inhibitory effects on growth.Conclusions This study showed that the double bond of resveratrol contributed to its inhibitory effects on Xoo growth, and hydroxyls were also the important active groups. Resveratrol could cause oxidative stress of Xoo cells, and disturb the metabolism of energy, purine, amino acid and NAD +, thus inhibit Xoo growth.

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“…Efforts have been made to establish alternative strategies, e.g., biological control and host plant resistance for the sustainable management of BB. Bio-control agents such as antagonistic bacteria of various genera e.g., Bacillus (Lin et al, 2001) and Serratia (Khoa et al, 2016) have been applied as seed treatment, foliar spraying and soil drenching, which significantly reduced the incidence and severity of BB. Furthermore, aqueous extracts of various herbal plant species like Datura metel (Kagale et al, 2004) and Chromolaena odorata (Khoa et al, 2011) have been shown to systematically induce resistance in rice plant against the disease.…”

Section: Introductionmentioning

confidence: 99%

Population Diversity of Xanthomonas Oryzae Pv. Oryzae Causing Bacterial Leaf Blight in Rice Fields of Can Tho

Tuấn¹,

Hào²,

Khoa³

2018

Vietnam J. Biotechnol.

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Bacterial leaf blight (BB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is a destructive disease in rice fields. Can Tho is one of the most important rice-growing areas in the Mekong Delta, which is vulnerable to climate change, making the disease more damaging in this region. Deployment of resistance genes is considered an economic and eco-friendly approach to control the disease. However, Xoo exists in different races with diverse reactions on different resistance genes. Thus, for effective management of BB, it is essential to understand the diversity of contemporary Xoo population to deploy appropriate resistance genes in rice fields. This study aims at assessing the Xoo population diversity (race composition) in rice fields of Can Tho using pathogenicity reactions on the near-isogenic lines (pathotypes) in combination with insertion sequence-PCR technique using J3 primer (genotypes). Among 132 isolates obtained from BB-infected leaf samples collected from six rice-growing areas of Can Tho, 126 isolates were identified as Xoo using PCR with the specific primers XOO290F/R. The contemporary Xoo population in Can Tho was composed of four races including two classic standard races (5 and 7) and two newly emerged ones (5* and 5**) of which races 5 and 5* were the most predominant. Seven haplotypes were identified in the four races and haplotypes I and III were predominant, accounting for 50.79% and 40.48%, respectively. The combination of the pathotypic and genotypic analyses showed genetic variations in races 5 and 5*. These results could be used for deployment of appropriate BB resistance cultivars in rice fields of Can Tho.

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Effects of Serratia nematodiphila CT-78 on rice bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae

Cited by 34 publications

References 43 publications

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

Resveratrol inhibits the growth of Xanthomonas oryzae pv. oryzae and the metabolomic analysis

Population Diversity of Xanthomonas Oryzae Pv. Oryzae Causing Bacterial Leaf Blight in Rice Fields of Can Tho

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