| Autor: |
Duhan, Manisha, Gupta, Subhankar, Bhattacharyya, U. K., Palchoudhury, S., Biswas, K. K. |
| Předmět: |
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| Zdroj: |
Annals of Plant Protection Sciences; Mar2020, Vol. 28 Issue 1, p67-71, 5p |
| Abstrakt: |
A survey of cotton leaf curl disease (CLCuD) in cotton fields of ICAR-IARI, New Delhi was made to study the disease incidence and determine the causal agents of CLCuD-begomovirus species or variants. The CLCuD incidence was estimated to 20.7% in the year 2018 and 26.3% in 2019 and it was observed lower than in the previous years. Five CLCuD-begomovirus isolates collected from infected fields were characterized based on sequence analysis of complete CP gene. The present isolates shared 99-100% nt identity among them, and 71-91% identity among the other CLCuD begomoviruses. Based on phylogenetic analysis, three isolates were members of Cotton leaf curl Multan virus - Rajasthan (CLCuMuV-Ra) and two were Cotton leaf curl Kokhran virus - Burewala (CLCuKoV) strains. Of five CLCuD isolates, four were detected as recombinants showing a common break point at 759-52nt (P=1.768 × 10-1). Thus, the occurrence of present lower degree of CLCuD may be due to the appearance of putative recombinant and avirulent CLCuMuV and CLCuKoV stains. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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