Injuries caused by citrus leafminer (Phyllocnistis citrella) exacerbate citrus canker (Xanthomonas axonopodis pv. citri) infection

Jesús, Waldir Cintra de; Belasque, José; Amorim, Lílian; Christiano, R. S. C.; Parra, José Roberto Postali; Filho, Armando Bergamin

doi:10.1590/s0100-41582006000300006

Cited by 28 publications

(6 citation statements)

References 19 publications

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“…The R 2 value of 97.5% expressed that that model is statistically appropriate and revealed that all these prescribed factors contributed positively towards the development of citrus canker. Results of present study are supported by several earlier studies [ 17 , 20 , 56 , 57 ] reporting that temperature, high relative humidity and strong wind with rain splash play a crucial role in the development of citrus canker diseases. Numerous studies concluded that mild temperature, humidity and wind driven rain exhibited major effect on disease development [ 32 , 33 , 58 ].…”

Section: Discussionsupporting

confidence: 90%

Predicting the impact of environmental factors on citrus canker through multiple regression

et al. 2022

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Climatic conditions play a significant role in the development of citrus canker caused by Xanthomonas citri pv. citri (Xcc). Citrus canker is regarded as one of the major threats being faced by citrus industry in citrus growing countries of the world. Climatic factors exert significant impacts on growth stage, host susceptibility, succulence, vigor, survival, multiplication rate, pathogen dispersion, spore penetration rate, and spore germination. Predicting the impacts of climatic factors on these traits could aid in the development of effective management strategies against the disease. This study predicted the impacts of environmental variables, i.e., temperature, relative humidity, rainfall, and wind speed the development of citrus canker through multiple regression. These environmental variables were correlated with the development of canker on thirty (30) citrus varieties during 2017 to 2020. Significant positive correlations were noted among environment variables and disease development modeled through multiple regression model (Y = +24.02 + 0.5585 X1 + 0.2997 X2 + 0.3534 X3 + 3.590 X4 + 1.639 X5). Goodness of fit of the model was signified by coefficient determination value (97.5%). Results revealed the optimum values of environmental variables, i.e., maximum temperature (37°C), minimum temperature (27°C), relative humidity (55%), rainfall (4.7–7.1 mm) and wind speed (8 Km/h), which were conducive for the development of citrus canker. Current study would help researchers in designing better management strategies against citrus canker disease under changing climatic conditions in the future.

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Section: Discussionsupporting

confidence: 90%

Predicting the impact of environmental factors on citrus canker through multiple regression

et al. 2022

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“…citri, the causal agent of citrus canker. The relationship between P. citrella and X. citri has been described (JESUS JUNIOR et al, 2006). However, there are no studies indicating a relationship between ABS and CLM larvae.…”

Section: A Mancha Marrom De Altenária Ou Mma (Alternaria Alternata)mentioning

confidence: 99%

“…mechanism must be related to biochemical processes occurring at the time when the pathogen attempts to colonize the tissue (IAKIMOVA et al, 2006). Little knowledge is available regarding the defense mechanisms of resistant tangerine varieties, and few publications have conclusively addressed this issue.…”

Section: A Mancha Marrom De Altenária Ou Mma (Alternaria Alternata)mentioning

confidence: 99%

Positive relationship between citrus leaf miner and alternaria brown spot

et al. 2015

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“…More than 50 species of insects and mites cause direct and indirect damage (Parra et al, 2005). Some key pests are mites, fruit flies, mealybugs, CVC (Citrus Variegated Chlorosis) vectors (leafhoppers), the citrus leafminer, the citrus fruit borer, and the Asian citrus psyllid, which has increased the indiscriminate use of pesticides (Parra et al, 2004b;Raga et al, 2004;Jesus Junior et al, 2006;Bobot et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Sustainability in Brazilian Citriculture: Three Decades of Successful Biological Control of Insect Pests

et al. 2022

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Citrus insect pests has grown worldwide, concerning entomologists and farmers especially because of the high demand for food that makes it to our tables. The use of pesticides brought several issues, such as the negative impacts on the human health, pollution, and insect resistance. In this context, more environmentally-friendly strategies have been demanded by governments and consumers. In this review, we present three remarkable examples of pest management in Brazil that involved many researchers from different expertise areas to develop more sustainable strategies to reduce the damages to citrus production. The case studies consisted of high-quality research funded by the Brazilian government and private institutions. In the first case, we report on the monitoring of the citrus fruit borer with sex pheromones, which significantly improved the control of this insect pest. Based on behavioral studies, it was recommended that delta traps containing pheromone attractant be installed on the upper third part of the plant. A recent study indicates the promising use of the egg parasitoid Trichogramma atopovirilia for biological control. In the second case, the biocontrol of the leafminer using Ageniaspis citricola is discussed. The insect pest was introduced into Brazil in 1996, causing losses of up to 60 kg of fruit per tree. The solution for this problem was the introduction of the parasitoid Ageniaspis citricola, originally from Asia. The pest was successfully controlled by the parasitoid, which was able to adapt to different citrus-producing regions in Brazil. Finally, the most emblematic successful case in Brazil is the biological control of the Asian citrus psyllid (ACP), Diaphorina citri, using Tamarixia radiata. ACP is the most important citrus pest because it causes indirect damage by transmitting the gram-negative bacteria that cause HLB (huanglongbing) in citrus areas. HLB is a vicious disease that has no cure: after being infected, the plants present chlorosis of the leaves, production of yellow shoots, and die within 2–3 years. The combination of laboratory tests, insect monitoring and computational modeling showed the efficacy of T. radiata against D. citri, which reduces the number of infected trees.

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Injuries caused by citrus leafminer (Phyllocnistis citrella) exacerbate citrus canker (Xanthomonas axonopodis pv. citri) infection

Cited by 28 publications

References 19 publications

Predicting the impact of environmental factors on citrus canker through multiple regression

Predicting the impact of environmental factors on citrus canker through multiple regression

Positive relationship between citrus leaf miner and alternaria brown spot

Sustainability in Brazilian Citriculture: Three Decades of Successful Biological Control of Insect Pests

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