Citrus rootstock characterization against citrus canker and evaluation of antibiotics effect against Xanthomonas axonopodis pv. citri

Khan, Kamran; Ikram, Sufian; Sami-ur-Rehman,; Ashfaq, Muhammad; Jaskani, Muhammad Jafar; Shafqat, Waqar

doi:10.37446/jinagri/rsa/8.2.2021.1-8

Cited by 2 publications

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“…Fruit juice quality and tree productivity of scion cultivars are also affected by rootstock characters. Rootstock has a significant impact on nutrition, horticultural and pathological traits of citrus cultivars, growth, vigor, stress resistance, and fruit quality of the scion [4][5][6][7]. Rootstock controls translocation of water and nutrients from the soil and distributes among different up ground plant organs, which were also disturbed negatively by the impact of stresses [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Three Water Regimes on the Physiological and Anatomical Structure of Stem and Leaves of Different Citrus Rootstocks with Distinct Degrees of Tolerance to Drought Stress

et al. 2021

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Citrus is grown globally throughout the subtropics and semi-arid to humid tropics. Abiotic stresses such as soil water deficit negatively affect plant growth, physiology, biochemistry, and anatomy. Herein, we investigated the effect(s) of three water regimes (control, moderate drought, and severe drought) on the physiological and anatomical structure of 10 different citrus rootstocks with different degrees of tolerance to drought stress. Brazilian sour orange and Gadha dahi performed well by avoiding desiccation and maintaining plant growth, plant water status, and biochemical characters, while Rangpur Poona nucellar (C. limonia) and Sunki × bentake were the most sensitive rootstocks at all stress conditions. At severe water stress, the highest root length (24.33 ± 0.58), shoot length (17.00 ± 1.00), root moisture content (57.67 ± 1.53), shoot moisture content (64.59 ± 1.71), and plant water potential (−1.57 ± 0.03) was observed in tolerant genotype, Brazilian sour orange. Likewise, chlorophyll a (2.70 ± 0.06), chlorophyll b (0.87 ± 0.06) and carotenoids (0.69 ± 0.08) were higher in the same genotype. The lowest H2O2 content (77.00 ± 1.00) and highest proline content (0.51 ± 0.06) were also recorded by Brazilian sour orange. The tolerance mechanism of tolerant genotypes was elucidated by modification in anatomical structures. Stem anatomy at severe drought, 27.5% increase in epidermal cell thickness, 25.4% in vascular bundle length, 30.5% in xylem thickness, 27.7% in the phloem cell area, 8% in the pith cell area, and 43.4% in cortical thickness were also observed in tolerant genotypes. Likewise, leaf anatomy showed an increase of 27.9% in epidermal cell thickness, 11.4% in vascular bundle length, 21% in xylem thickness, and 15% in phloem cell area in tolerant genotypes compared with sensitive ones. These modifications in tolerant genotypes enabled them to maintain steady nutrient transport while reducing the risk of embolisms, increasing water-flow resistance, and constant transport of nutrients across.

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Section: Introductionmentioning

confidence: 99%

Effect of Three Water Regimes on the Physiological and Anatomical Structure of Stem and Leaves of Different Citrus Rootstocks with Distinct Degrees of Tolerance to Drought Stress

et al. 2021

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“…Outcomes of present study was supported by the findings of Jaskani who studied the effect of different antibiotics for controlling citrus canker and concluded that kanamycin sulphate expressed the higher inhibition zone followed by Streptomycin Sulphate and Lincomycin against Xanthomonas citri subsp. citri (Jaskani et al, 2021). Already, nine antibiotics against citrus canker caused by Xanthomonas citri subsp.…”

Section: Discussionmentioning

confidence: 99%

Managing Citrus Canker: Evaluating the Effectiveness of Antibiotics and Chemicals for Disease Control

Shahbaz,

Atiq,

Rajput

et al. 2023

Int. J. Phytopathol.

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Citrus (family Rutaceae) stands as a prominent fruit crop on a global scale, bearing substantial significance. Renowned for its abundance of fiber, amino acids, antioxidants, vitamin C, and carbohydrates. However, the successful production of citrus is persistently challenged by the menacing presence of citrus canker caused by Xanthomonas citri subsp. citri (Xcc), posing 5-30% yield losses in Pakistan. Current study was aimed to manage Xcc through antibiotics and copper-based chemicals under lab. and field conditions. In vitro evaluations of antibiotics showed that Enrofloxacin expressed the maximum inhibition zone (35.68mm), followed by Enco-Mix (33.50mm), Pevivet-5 (33.48mm), Kanamycin sulphate (30.41mm), Sinobiotic (30.02mm), Streptomycin sulphate (29.33mm) and Gentam-20% (28.26mm) as compared to control. Field experiments of copper-based chemicals concluded that Copper nitrate exhibited the minimum disease incidence (16.07%), followed by Copper hydrooxide (21.78%), Amistar top (22.28%), Copper oxychloride (24.37%), and Copper acetate (24.63%), but Control expressed maximum disease incidence (65.00%). The mixture of Cu (NO2)3 + Enrofloxacin under field conditions was most effective regarding management of citrus canker. Current revelation appreciated the efficacy of Cu (NO2)3 + Enrofloxacin to manage citrus canker and strongly suggested this treatment against various bacterial pathogens.

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Citrus rootstock characterization against citrus canker and evaluation of antibiotics effect against Xanthomonas axonopodis pv. citri

Cited by 2 publications

References 0 publications

Effect of Three Water Regimes on the Physiological and Anatomical Structure of Stem and Leaves of Different Citrus Rootstocks with Distinct Degrees of Tolerance to Drought Stress

Effect of Three Water Regimes on the Physiological and Anatomical Structure of Stem and Leaves of Different Citrus Rootstocks with Distinct Degrees of Tolerance to Drought Stress

Managing Citrus Canker: Evaluating the Effectiveness of Antibiotics and Chemicals for Disease Control

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