Observations on Citrus Variegated Chlorosis in Brazil
نویسندگان
چکیده
منابع مشابه
Nutritional deficiency in citrus with symptoms of citrus variegated chlorosis disease.
It is well known that citrus plants that have been infected by Xylella fastidiosa display nutritional deficiencies, probably caused by production of extracellular polymers by the bacteria that block normal nutrient flow through the xylem. The aim of this work was to study the mineral composition of specific foliar areas in different stages of infection in citrus. Thus, the concentrations of mac...
متن کاملInfrared spectroscopy: a potential tool in huanglongbing and citrus variegated chlorosis diagnosis.
Huanglongbing (HLB) and citrus variegated chlorosis (CVC) are serious threats to citrus production and have caused considerable economic losses worldwide, especially in Brazil, which is one of the biggest citrus producers in the world. Neither disease has a cure nor an efficient means of control. They are also generally confused with each other in the field since they share similar initial symp...
متن کاملStable transformation of the Xylella fastidiosa citrus variegated chlorosis strain with oriC plasmids.
Xylella fastidiosa is a gram-negative, xylem-limited bacterium affecting economically important crops (e.g., grapevine, citrus, and coffee). The citrus variegated chlorosis (CVC) strain of X. fastidiosa is the causal agent of this severe disease of citrus in Brazil and represents the first plant-pathogenic bacterium for which the genome sequence was determined. Plasmids for the CVC strain of X....
متن کاملEtiology of three recent diseases of citrus in São Paulo State: sudden death, variegated chlorosis and huanglongbing.
The state of São Paulo (SSP) is the first sweet orange growing region in the world. Yet, the SSP citrus industry has been, and still is, under constant attack from various diseases. In the 1940s, tristeza-quick decline (T-QD) was responsible for the death of 9 million trees in SSP. The causal agent was a new virus, citrus tristeza virus (CTV). The virus was efficiently spread by aphid vectors, ...
متن کاملComparative analyses of the complete genome sequences of Pierce's disease and citrus variegated chlorosis strains of Xylella fastidiosa.
Xylella fastidiosa is a xylem-dwelling, insect-transmitted, gamma-proteobacterium that causes diseases in many plants, including grapevine, citrus, periwinkle, almond, oleander, and coffee. X. fastidiosa has an unusually broad host range, has an extensive geographical distribution throughout the American continent, and induces diverse disease phenotypes. Previous molecular analyses indicated th...
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ژورنال
عنوان ژورنال: International Organization of Citrus Virologists Conference Proceedings (1957-2010)
سال: 1993
ISSN: 0074-7203,2313-5123
DOI: 10.5070/c52sb1d9jm