2008
DOI: 10.1364/ao.47.001922
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Detection of mechanical and disease stresses in citrus plants by fluorescence spectroscopy

Abstract: We have investigated the detection of mechanical and disease stresses in citrus plants (Citrus limonia [L.] Osbeck) using laser-induced fluorescence spectroscopy. Due to its economic importance we have chosen to investigate the citrus canker disease, which is caused by the Xanthomonas axonopodis pv. citri bacteria. Mechanical stress was also studied because it plays an important role in the plant's infection by such bacteria. A laser-induced fluorescence spectroscopy system, composed of a spectrometer and a 53… Show more

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Cited by 120 publications
(78 citation statements)
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“…As an example, fluorescence spectroscopy was used to distinguish citrus (Citrus spp.) plants experiencing mechanical injury, drought, variegated chlorosis, or bacterial infection Marcassa et al, 2006;Belasque et al, 2008;Bock et al, 2008). Granum et al (2015) investigated the ability to detect early stages of infection of avocado (Persea americana) by the fungus Rosellinia necatrix using fluorescence and thermal imaging.…”
Section: Plant Disease and Pest Phenotypingmentioning
confidence: 99%
“…As an example, fluorescence spectroscopy was used to distinguish citrus (Citrus spp.) plants experiencing mechanical injury, drought, variegated chlorosis, or bacterial infection Marcassa et al, 2006;Belasque et al, 2008;Bock et al, 2008). Granum et al (2015) investigated the ability to detect early stages of infection of avocado (Persea americana) by the fungus Rosellinia necatrix using fluorescence and thermal imaging.…”
Section: Plant Disease and Pest Phenotypingmentioning
confidence: 99%
“…Diseases of Leaf Considered Apple Apple mosaic, Apple rust, and Apple Alternaria leaf spot [5] Cassava Brown leaf spot [6] Citrus Citrus canker [7], [8], [9] Cotton a) Bacterial disease: e.g. Bacterial Blight, Lint Degradation, Crown Gall.…”
Section: Plant Leafmentioning
confidence: 99%
“…Logo, alterações na emissão da fluorescência podem mostrar a ausência ou presença dos processos fotossintéticos. As mudanças no A excitação ultravioleta em folhas verdes induz duas respostas distintas: a BGF (do inglês, Blue-Green Fluorescence) na região entre 400-600 nm, e a ChlF mencionada anteriormente (28,36). As intensidades relativas destes dois tipos de fluorescência são altamente sensíveis às propriedades intrínsecas das folhas e de fatores ambientais.…”
Section: Espectroscopia De Fluorescênciaunclassified
“…A capacidade de detecção de folhas assintomáticas já foi avaliada para a técnica de espectroscopia induzida a laser utilizando um espectrômetro portátil à fibra ótica (36 Sendo assim, desenvolvemos um algoritmo no próprio Matlab ® para a eliminação destes componentes presentes nas imagens.…”
Section: Metodologia Para a Coleta Das Imagens De Fluorescênciaunclassified
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