Arid
DOI10.1111/ppa.12683
Expression of phytoplasma-induced witches’ broom disease symptoms in acid lime (Citrus aurantifolia) trees is affected by climatic conditions
Al-Ghaithi, A. G.1; Al-Sadi, A. M.1; Al-Hammadi, M. S.2; Al-Shariqi, R. M.2; Al-Yahyai, R. A.1; Al-Mahmooli, I. H.1; Carvalho, C. M.3; Elliot, S. L.4; Hogenhout, S. A.5
通讯作者Al-Sadi, A. M.
来源期刊PLANT PATHOLOGY
ISSN0032-0862
EISSN1365-3059
出版年2017
卷号66期号:8页码:1380-1388
英文摘要

Witches’ broom disease (WBD), caused by ’Candidatus Phytoplasma aurantifolia’, is a serious disease of acid lime (Citrus aurantifolia) in Oman and the UAE. However, little is known about the distribution of phytoplasma and the expression of WBD symptoms in different geographical locations. A survey was carried out in 18 districts in Oman and the UAE covering 143 orchards and 5823 acid lime trees. ’Candidatus Phytoplasma aurantifolia’ was detected in acid lime in all the 18 surveyed districts. However, the development of typical symptoms of WBD was only observed in 12 districts. Districts in which the phytoplasma was present but symptoms were not expressed were located either in desert areas or in areas characterized by semitropical conditions. Phylogenetic analysis of 16 phytoplasma isolates from trees developing WBD symptoms and six phytoplasma isolates from trees with no WBD symptoms showed that all isolates share an identical 16S rRNA sequence, belonging to subgroup II-B. Quantitative PCR analysis showed that the concentration of phytoplasma is significantly higher (8800-801 000 copies) in leaves developing WBD symptoms compared to 2-268 copies in symptomless leaves from the same trees and 8-874 copies in acid lime trees from areas where disease symptoms were not expressed. The lack of expression of WBD symptoms under certain environmental conditions may suggest that symptom development and phytoplasma are affected by certain unfavourable environmental conditions. These findings could provide a basis for managing WBD through encouraging lime cultivation under climatic conditions less conducive to WBD symptom expression.


英文关键词16SrII-B phytoplasma titre qPCR witches’ broom disease of lime
类型Article
语种英语
国家Oman ; U Arab Emirates ; Brazil ; England
收录类别SCI-E
WOS记录号WOS:000410746600017
WOS关键词16S RIBOSOMAL-RNA ; PROTEIN ; OMAN ; TRANSMISSION ; MOLLICUTES ; SEQUENCES ; INSECT ; PLANTS
WOS类目Agronomy ; Plant Sciences
WOS研究方向Agriculture ; Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201561
作者单位1.Sultan Qaboos Univ, Coll Agr & Marine Sci, Dept Crop Sci, POB 34, Al Khoud 123, Oman;
2.Abu Dhabi Food Control Author, Abu Dhabi, U Arab Emirates;
3.Univ Fed Vicosa, Dept Phytopathol, Vicosa, MG, Brazil;
4.Univ Fed Vicosa, Dept Entomol, Vicosa, MG, Brazil;
5.John Innes Ctr, Dept Cell & Dev Biol, Norwich, Norfolk, England
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Al-Ghaithi, A. G.,Al-Sadi, A. M.,Al-Hammadi, M. S.,等. Expression of phytoplasma-induced witches’ broom disease symptoms in acid lime (Citrus aurantifolia) trees is affected by climatic conditions[J],2017,66(8):1380-1388.
APA Al-Ghaithi, A. G..,Al-Sadi, A. M..,Al-Hammadi, M. S..,Al-Shariqi, R. M..,Al-Yahyai, R. A..,...&Hogenhout, S. A..(2017).Expression of phytoplasma-induced witches’ broom disease symptoms in acid lime (Citrus aurantifolia) trees is affected by climatic conditions.PLANT PATHOLOGY,66(8),1380-1388.
MLA Al-Ghaithi, A. G.,et al."Expression of phytoplasma-induced witches’ broom disease symptoms in acid lime (Citrus aurantifolia) trees is affected by climatic conditions".PLANT PATHOLOGY 66.8(2017):1380-1388.
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