Plants (2022) 11 (5 - 704)

Thuy T.B. Vo, Aamir Lal, Phuong T. Ho, Elisa Troiano, Giuseppe Parrella, Eui-Joon Kil and Sukchan Lee (2022)
Different infectivity of Mediterranean and southern Asian Tomato leaf curl New Delhi virus isolates in cucurbit crops
Plants 11 (5 - 704)
Abstract: Tomato leaf curl New Delhi virus (ToLCNDV) became an alerting virus in Europe from 2017 to 2020 because of its significant damage to Cucurbitaceae cultivation. Until now, just some cucurbit crops including sponge gourd, melon, pumpkin, and cucumber were reported to be resistant to ToLCNDV, but no commercial cultivars are available. In this study, a new isolate of ToLCNDV was identified in Pakistan and analyzed together with ToLCNDV-ES which was previously isolated in Italy. Furthermore, infectious clones of two ToLCNDV isolates were constructed and agroinoculated into different cucurbit crops to verify their infectivity. Results showed that both isolates exhibited severe infection on all tested cucurbit (>70%) except watermelon. Thus, those cultivars may be good candidates in the first step of screening genetic resources for resistance on both Southeast Asian and Mediterranean ToLCNDV isolates. Additional, comparison pathogenicity of different geographical ToLCNDV isolates will be aided to understand viral characterization as such knowledge could facilitate breeding resistance to this virus.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Giuseppe Parrella

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tomato leaf curl New Delhi virus	Squash/pumpkin (Cucurbita)	Italy
	Tomato leaf curl New Delhi virus	Vinca (crop)	Pakistan