Genetic diversity of hop stunt viroid from symptomatic and asymptomatic citrus trees in Iran

2019 ◽  
Vol 167 (9) ◽  
pp. 484-489
Author(s):  
Ramtin Vamenani ◽  
Heshmatollah Rahimian ◽  
Seyyed Mohammad Alavi ◽  
Ali Pakdin Parizi ◽  
Tarlan Mirza Razzaz
Keyword(s):  
Genetic Diversity ◽  
Stunt Viroid ◽  
Hop Stunt Viroid ◽  
Citrus Trees

scholarly journals A Current Overview of Two Viroids Prevailing in Citrus Orchards: Citrus Exocortis Viroid and Hop Stunt Viroid

2021 ◽  
Author(s):  
Zineb Belabess ◽  
Nabil Radouane ◽  
Tourya Sagouti ◽  
Abdessalem Tahiri ◽  
Rachid Lahlali
Keyword(s):  
Control Strategies ◽  
Seed Transmission ◽  
Detection Methods ◽  
Stunt Viroid ◽  
Citrus Exocortis Viroid ◽  
Certification Programs ◽  
Hop Stunt Viroid ◽  
Citrus Orchards ◽  
Citrus Varieties ◽  
Citrus Trees

Citrus exocortis viroid (CEVd) and hop stunt viroid (HSVd) are the main viroids circulating in all citrus-growing areas worldwide, and causing two well-known diseases on citrus trees; exocortis and cachexia, respectively. These viroids are small, covalently closed single-stranded RNA, allocated to the Pospiviroidae family. CEVd is the first viroid being described on citrus trees in 1948 in California. It is considered the largest citrus viroid at 371 nucleotides. It causes bark scaling disorder on the rootstock of citrus trees grafted on trifoliate orange and its hybrids and can cause dwarfing of trees grown on these rootstocks. HSVd was first observed in 1945 in Florida. It consists of 299 nucleotides. Stunting, chlorosis, bark gumming, stem pitting, decline, and depressions in the wood are the main symptoms of HSVd in mandarin and its hybrids. The introduction and propagation of infected budwoods are the main causes of viroids spread in citrus orchards. These agents are mechanically sap-transmissible and spread by contaminated tools. Neither seed transmission nor vectors have been reported for both viroids. Root transmission, though possible, would be overshadowed by mechanical transmission. Rapid and sensitive molecular-based detection methods specific to both viroids are available. Both diseases are controlled by using viroids-free budwoods for new plantations, launching budwood certification programs, and establishing a quarantine system for new citrus varieties introduction. The most important achievements in CEVd and HSVd researches are outlined in this chapter. This would help to provide a clearer understanding of the diseases they cause and contribute to the development of better control strategies.

scholarly journals Multiplex detection, distribution, and genetic diversity of Hop stunt viroid and Citrus exocortis viroid infecting citrus in Taiwan

2015 ◽  
Vol 12 (1) ◽  
pp. 11 ◽  
Author(s):  
Chun-Yi Lin ◽  
Meng-Ling Wu ◽  
Tang-Long Shen ◽  
Hsin-Hung Yeh ◽  
Ting-Hsuan Hung
Keyword(s):  
Genetic Diversity ◽  
Multiplex Detection ◽  
Stunt Viroid ◽  
Citrus Exocortis Viroid ◽  
Hop Stunt Viroid

scholarly journals First Report of Hop stunt viroid Infecting Citrus Trees in Morocco

Plant Disease ◽  
2016 ◽  
Vol 100 (7) ◽  
pp. 1512-1512 ◽  
Author(s):  
M. Afechtal ◽  
H. Jamai ◽  
F. Mokrini ◽  
A. Essarioui ◽  
Z. Faddoul ◽  
...  
Keyword(s):  
First Report ◽  
Stunt Viroid ◽  
Hop Stunt Viroid ◽  
Citrus Trees

scholarly journals First Report of Hop Stunt Viroid Infecting Citrus Trees in Georgia, USA

Plant Disease ◽  
2020 ◽  
pp. PDIS-07-20-1537
Author(s):  
T. Stackhouse ◽  
S. Waliullah ◽  
J. E. Oliver ◽  
J. L. Williams-Woodward ◽  
M. E. Ali
Keyword(s):  
First Report ◽  
Stunt Viroid ◽  
Hop Stunt Viroid ◽  
Citrus Trees

Incidence and genetic diversity of Peach latent mosaic viroid and Hop stunt viroid in stone fruits in Serbia

2007 ◽  
Vol 120 (2) ◽  
pp. 167-176 ◽  
Author(s):  
B. Mandic ◽  
M. Al Rwahnih ◽  
A. Myrta ◽  
G. Gomez ◽  
V. Pallás
Keyword(s):  
Genetic Diversity ◽  
Stone Fruits ◽  
Stunt Viroid ◽  
Hop Stunt Viroid

Genetic diversity and pathogenicity of potato spindle tuber viroid and chrysanthemum stunt viroid isolates in Russia

2021 ◽  
Author(s):  
Yosuke Matsushita ◽  
Hironobu Yanagisawa ◽  
Aleksandr Khiutti ◽  
Nina Mironenko ◽  
Yasuo Ohto ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Potato Spindle Tuber Viroid ◽  
Chrysanthemum Stunt Viroid ◽  
Stunt Viroid
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