scholarly journals Genetic population structure of Bemisia tabaci in Spain associated with Tomato leaf curl New Delhi virus – short communication

2017 ◽  
Vol 53 (No. 1) ◽  
pp. 25-31 ◽  
Author(s):  
Janssen Dirk ◽  
Simon Almudena ◽  
Crespo Oscar ◽  
Ruiz Leticia

Tomato leaf curl New Delhi virus (ToLCNDV) originates from Asia where it is persistently transmitted by indigenous cryptic species of the whitefly Bemisia tabaci. The virus has recently invaded Spain, Tunisia, and Italy, and to investigate whether whitefly species new to the Mediterranean are involved, 35 populations were collected during 2015 from different crops in different regions of southern Spain. Comparison of partial mitochondrial cytochrome oxidase I sequences from the collected whiteflies revealed the existence of 7 different haplotypes belonging to the Mediterranean-Q1 cryptic species. ToLCNDV was detected in 15 populations collected from tomato, zucchini, and melon crops and from 5 different localities. The results suggest that MED-Q1 is also responsible for the current spread of ToLCNDV in Spain.

2020 ◽  
Vol 73 (3) ◽  
pp. 533-542 ◽  
Author(s):  
K. V. Ashwathappa ◽  
V. Venkataravanappa ◽  
C. N. Lakshminarayana Reddy ◽  
M. Krishna Reddy

2021 ◽  
Author(s):  
Pedro Gómez ◽  
Miguel Juárez

Abstract Tomato leaf curl New Delhi virus (ToLCNDV) is a bipartite, single-stranded DNA virus transmitted by the whitefly, Bemisia tabaci. The virus was first identified in India in 1995 affecting solanaceous crops (Padidam et al., 1995) and thereafter, causing major damage to cucurbit crops on the Indian subcontinent (Zaidi et al., 2017). ToLCNDV was first detected in Europe in 2012, affecting zucchini squash crops in Spain (Juárez et al., 2014), with subsequent detections in Tunisia (Mnari-Hattab et al., 2015), Italy (Panno et al., 2016) and Morocco (Sifres et al., 2018). ToLCNDV is responsible for severe outbreaks of disease in cucurbit crops in the Mediterranean basin (Juárez et al., 2019; Panno et al., 2019) and represents a serious threat to economically important solanaceous crops in the region (Moriones et al., 2017). ToLCNDV appears to be spreading rapidly and is listed as a quarantine pest by EPPO (EPPO, 2019). There are quarantine measures to control its whitefly vector (Bertin et al., 2018).


2021 ◽  
Author(s):  
Pedro Gómez ◽  
Miguel Juárez

Abstract Tomato leaf curl New Delhi virus (ToLCNDV) is a bipartite, single-stranded DNA virus transmitted by the whitefly, Bemisia tabaci. The virus was first identified in India in 1995 affecting solanaceous crops (Padidam et al., 1995) and thereafter, causing major damage to cucurbit crops on the Indian subcontinent (Zaidi et al., 2017). ToLCNDV was first detected in Europe in 2012, affecting zucchini squash crops in Spain (Juárez et al., 2014), with subsequent detections in Tunisia (Mnari-Hattab et al., 2015), Italy (Panno et al., 2016) and Morocco (Sifres et al., 2018). ToLCNDV is responsible for severe outbreaks of disease in cucurbit crops in the Mediterranean basin (Juárez et al., 2019; Panno et al., 2019) and represents a serious threat to economically imp1ortant solanaceous crops in the region (Moriones et al., 2017). ToLCNDV appears to be spreading rapidly and is listed as a quarantine pest by EPPO (EPPO, 2019a). There are quarantine measures to control its whitefly vector (Bertin et al., 2018).


Viruses ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 307 ◽  
Author(s):  
Isabel Fortes ◽  
Sonia Sánchez-Campos ◽  
Elvira Fiallo-Olivé ◽  
Juan Díaz-Pendón ◽  
Jesús Navas-Castillo ◽  
...  

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2032
Author(s):  
Rajendra Acharya ◽  
Yam Kumar Shrestha ◽  
Mst Fatema Khatun ◽  
Kyeong-Yeoll Lee

The Bemisia tabaci species complex consists of at least 44 cryptic species, which are potential vectors of approximately 320 begomovirus species, most of which are significant plant viruses. However, the relationship of begomovirus transmission through vectors at the cryptic species level is uncertain. In our previous study, three cryptic species (Asia I, Asia II 1, and Asia II 5) of B. tabaci were identified from 76 B. tabaci samples collected across 23 districts in Nepal. Using the same individuals we identified seven different begomovirus species (Squash leaf curl China virus [SLCCNV], Tomato leaf curl New Delhi virus [ToLCNDV], Okra enation leaf curl virus [OELCuV], Synedrella leaf curl virus [SyLCV], Tomato leaf curl Kerala virus [ToLCKeV], Ageratum enation virus [AEV], and Tomato leaf curl Karnataka virus [ToLCKV]) by PCR using universal begomovirus primers. The begomoviruses were detected in 55.26% of whitefly samples, and SLCCNV was the most prevalent species (27.63%). Among the three cryptic species of B. tabaci, the virus detection rate was highest in Asia I (60%), followed by Asia II 1 (58.82%) and Asia II 5 (53.06%). Most viruses were detected in all three species, but AEV and ToLCKV were found only in Asia I and Asia II 1, respectively. Geographic analysis showed that SLCCNV was distributed in the whole country, which is similar to the distribution of the Asia II 5 species, but OELCuV and SyLCV were detected only in the middle region of Nepal. Our results provide important information on the begomovirus profile in Nepal which can be beneficial for plant virus risk assessment and develop the management strategies to reduce the damage of whitefly transmitted viruses.


2018 ◽  
Vol 38 ◽  
pp. 2 ◽  
Author(s):  
S. Scussel ◽  
S. Claverie ◽  
M. Hoareau ◽  
C. Simiand ◽  
B. Reynaud ◽  
...  

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