Phytoplasma Association with Gerbera Phyllody in Australia

Siddique, Aisha

doi:10.1111/j.1439-0434.2005.01036.x

Cited by 8 publications

(5 citation statements)

References 5 publications

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“…To date, genetically different phytoplasmas have been identified in diseased ornamentals. However, they are mainly members of the 16SrI group, subgroups B, C and A (Griffiths et al., 1994; Tanne et al., 2000; d'Aquilio et al., 2002; Kaminska et al., 2003; Rojas‐Martinez et al., 2003; Bertaccini et al., 2005; Siddique, 2005). This is in agreement with our data showing that most of the phytoplasmas infecting ornamental plants in Iran are assigned to ‘ Candidatus Phytoplasma asteris’.…”

Section: Resultsmentioning

confidence: 99%

Detection and Characterization of Phytoplasmas Infecting Ornamental and Weed Plants in Iran

Babaie

Khatabi

Bayat³

et al. 2007

Journal of Phytopathology

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During field surveys in 2004, ornamental and weed plants showing symptoms resembling those caused by phytoplasmas were observed in Mahallat (central Iran). These plants were examined for phytoplasma infections by polymerase chain reaction (PCR) assays using universal phytoplasma primers directed to ribosomal DNA (rDNA). All affected plants gave positive results. The detected phytoplasmas were characterized and differentiated through restriction fragment length polymorphism (RFLP) and sequence analysis of PCR-amplified rDNA. The phytoplasmas detected in diseased Asclepias curassavica and Celosia argentea were identified as members of clover proliferation phytoplasma group (16SrVI group) whereas those from the remaining plants examined proved to be members of aster yellow phytoplasma group (16SrI group) (ÔCandidatus Phytoplasma asterisÕ). In particular, following digestion with AluI, HaeIII and HhaI endonucleases, the phytoplasma detected in Limonium sinuatum showed restriction profiles identical to subgroup 16SrI-C; phytoplasmas from Gomphocarpus physocarpus, Tanatacetum partenium, Lactuca serriola, Tagetes patula and Coreopsis lanceolata had the same restriction profiles as subgroup 16SrI-B whereas Catharanthus roseus-and Rudbeckia hirta-infecting phytoplasmas showed restriction patterns of subgroup 16SrI-A. This is the first report on the occurrence of phytoplasma diseases of ornamental plants in Iran.

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Section: Resultsmentioning

confidence: 99%

Detection and Characterization of Phytoplasmas Infecting Ornamental and Weed Plants in Iran

Babaie

Khatabi

Bayat³

et al. 2007

Journal of Phytopathology

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“…However,Hong et al ( 2005 ) detected and identifi ed phytoplasmas associated with witches' broom disease in Cassia surattensis in China. A new phytoplasma was identifi ed as infecting Cassia italica in Oman(Al-Saady et al 2008 ) Siddique ( 2006 ). reported phyllody on Gerbera jamesonii in Australia, whileRibeiro et al ( 2006 ) reported shoot proliferation in Begonia in Brazil Jones and Arocha ( 2006 ).…”

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confidence: 99%

Plant, Soil and Microbes

2016

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“…Gerbera jamesonii : green deformed flowers with many small petals; the infected plants did not die after the infection, but continued to grow new suckers that produced green deformed flowers (Siddique, );…”

Section: Appendix a – Symptoms On Plants Other Than Cydonia Mill Frag...mentioning

confidence: 99%

Pest categorisation of the non‐EU phytoplasmas of Cydonia Mill., Fragaria L., Malus Mill., Prunus L., Pyrus L., Ribes L., Rubus L. and Vitis L.

Bragard¹,

Dehnen‐Schmutz²,

Gonthier³

et al. 2020

EFS2

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Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of nine phytoplasmas of Cydonia Mill., Fragaria L., Malus Mill., Prunus L., Pyrus L., Ribes L., Rubus L. and Vitis L. (hereafter "host plants") known to occur only outside the EU or having a limited presence in the EU. This opinion covers the (i) reference strains of 'Candidatus Phytoplasma australiense', 'Ca. P. fraxini', 'Ca. P. hispanicum', 'Ca. P. trifolii', 'Ca. P. ziziphi', (ii) related strains infecting the host plants of 'Ca. P. aurantifolia', 'Ca. P. pruni', and 'Ca. P. pyri', and (iii) an unclassified phytoplasma causing Buckland valley grapevine yellows. Phytoplasmas can be detected by available methods and are efficiently transmitted by vegetative propagation, with plants for planting acting as a major entry pathway and a long-distance spread mechanism. Phytoplasmas are also transmitted in a persistent and propagative manner by some insect families of the Fulgoromorpha, Cicadomorpha and Sternorrhyncha (order Hemiptera). No transovarial, pollen or seed transmission has been reported. The natural host range of the categorised phytoplasmas varies from one to more than 90 plant species, thus increasing the possible entry pathways. The host plants are widely cultivated in the EU. All the categorised phytoplasmas can enter and spread through the trade of host plants for planting, and by vectors. Establishment of these phytoplasmas is not expected to be limited by EU environmental conditions. The introduction of these phytoplasmas in the EU would have an economic impact. There are measures to reduce the risk of entry, establishment, spread and impact. Uncertainties result from limited information on distribution, biology and epidemiology. All the phytoplasmas categorised here meet the criteria evaluated by EFSA to qualify as potential Union quarantine pests, and they do not qualify as potential regulated non-quarantine pests, because they are non-EU phytoplasmas.

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Phytoplasma Association with Gerbera Phyllody in Australia

Cited by 8 publications

References 5 publications

Detection and Characterization of Phytoplasmas Infecting Ornamental and Weed Plants in Iran

Detection and Characterization of Phytoplasmas Infecting Ornamental and Weed Plants in Iran

Plant, Soil and Microbes

Pest categorisation of the non‐EU phytoplasmas of Cydonia Mill., Fragaria L., Malus Mill., Prunus L., Pyrus L., Ribes L., Rubus L. and Vitis L.

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