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Fasciation in Crassula argentea: molecular identification of phytoplasmas and associated antioxidative capacity
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Fasciation in Crassula argentea: molecular identification of phytoplasmas and associated antioxidative capacity
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Journal Article
Fasciation in Crassula argentea: molecular identification of phytoplasmas and associated antioxidative capacity
2016
Overview
The present study reports on phytoplasma induced fasciation in
Crassula argintea
(Crassulaceae). DNA was extracted from symptomless and fasciated tissues and amplified by nested PCR using universal primers P1/P7 followed by R16F2n/R16R2 produced amplicons of 1.2 Kb. The nucleotide sequence analyses of the amplicons indicated that fasciated plants were infected by phytoplasma. Phylogenetic analysis placed the
Crassula
fasciation phytoplasmas in 16SrII-D group. Histochemical staining for reactive oxygen species indicated that phytoplasma infected (PI) tissues possess significantly higher levels of hydrogen peroxide (H
2
O
2
) rather than superoxide (O
2
·-
) as compared with symptomless tissues. PI tissues were also associated with a significant increase in antioxidant enzyme activities (catalase, peroxidase, polyphenol oxidase, and glutathione reductase) and electrolyte leakage as compared with symptomless tissues.
Publisher
Springer Netherlands,Springer Nature B.V
Subject
