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Possible Phytoplasma Disease in Papaya ( Carica papaya L.) from Baja California Sur: Diagnosis by Scanning Electron Microscopy
Author(s) -
Poghosyan A. V.,
Lebsky V. K.,
ArceMontoya M.,
Landa L.
Publication year - 2004
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.2004.00847.x
Subject(s) - carica , phytoplasma , biology , phloem , botany , scanning electron microscope , materials science , genotype , genetics , restriction fragment length polymorphism , gene , composite material
The symptoms of possible phytoplasma infection in introduced and local varieties of papaya were first noted in the Mexican state of Baja California Sur (BCS) during field surveys in 2002–2003. Phytoplasma structures were observed using scanning electron microscopy (SEM) in phloem sieve elements in diseased papaya plants, but not in healthy plants. They were rounded structures 400–1600 nm in diameter. This is the first report of the possible association of phytoplasmas with diseased papaya plants in BCS. The use of SEM for the primary detection of disease aetiology is discussed.