Circular No. 85 - Chlorosis Yellowing of Plants: Cause and Control
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Studies on antioxidative enzymes induced by cadmium in pea plants (Pisum sativum).
Pea plants (Pisum sativum cv. Swati) exposed to different concentration of cadmium (50,100, 200 microM Cd) under controlled glass house conditions were quantified for different physiological parameters and antioxidative enzymes. In pea plants, Cd produced a significant inhibition of growth and induced chlorosis, marginal yellowing and necrosis in young leaves, the effect being most pronounced a...
متن کاملMolecular characterization of phytoplasma of 16SrI-B group association with Acalypha indica in India
The typical phytoplasma symptoms of little leaf, yellowing, chlorosis, witches' broom, and stunting growth were observed on Acalypha indica plants during the field survey conducted at Lucknow and surrounding districts in year 2015-2016. To confirm the association and possibility of phytoplasma etiology, PCR assays were performed using universal primer pairs (P1/P6) and nested primer pairs (R16F...
متن کاملMolecular and symptom analyses of phytoplasma strains from lettuce reveal a diverse population.
ABSTRACT Epidemics of aster yellows in lettuce in Ohio are caused by at least seven distinct phytoplasma strains in the aster yellows (AY) group. Five of the strains are newly reported: AY-BW, AY-WB, AY-BD3, AY-SS, and AY-SG. All seven strains were characterized based on symptoms in aster and lettuce, and by polymerase chain reaction (PCR). Strain AY-BD2 (formerly 'Bolt') causes yellowing and l...
متن کاملBeet poleroviruses: close friends or distant relatives?
UNLABELLED SUMMARY Taxonomy: There are three members of the genus Polerovirus (family Luteoviridae) that induce yellowing of sugar beet: Beet mild yellowing virus (BMYV), Beet chlorosis virus (BChV) and Beet western yellows virus-USA (BWYV-USA, Fig. 1). Non-beet-infecting isolates of BWYV found particularly within Europe have now been re-named Turnip yellows virus (TuYV). Species-specific antib...
متن کاملDisease Note First Report of Tomato Infectious Chlorosis Virus from Tomato in Apulia, Southern Italy
A severe disease of tomato was observed in 2010 in a greenhouse in the province of Lecce (Apulia, southern Italy). Plants showed interveinal yellowing and thickening of mature leaves and a bushy appearance of the new growth. Pale-yellow spots, which became sunken and necrotic, were scattered on the fruit surface. Leaf symptoms were reminiscent of those induced by Tomato chlorosis virus (ToCV) o...
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تاریخ انتشار 2016