Cotton leaf curl disease in resistant cotton is associated with a single begomovirus that lacks an intact transcriptional activator protein

Amrao, Luqman; Amin, Imran; Shahid, Muhammad; Briddon, R. W.; Mansoor, Shahid

doi:10.1016/j.virusres.2010.06.019

Cited by 110 publications

(134 citation statements)

References 58 publications

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“…If the strategies are used in isolation, inbred resistance could potentially fail in the face of continuous long-term exposure to diverse rapidly mutating and recombining begomovirus populations. This is exactly what happened in Pakistan in the 2000s, when the massive deployment of cotton cultivars with resistance to Cotton leaf curl Multan virus led to the quick emergence of the resistance-breaking recombinant virus Cotton leaf curl Burewala virus, which is now prevalent in that country (87,88). Complementary control measures, such as insecticide use, crop rotation, and implementation of a tomatofree period, should be investigated for concurrent use with resistant genotypes to obstruct the evolution and spread of resistancebreaking viral lineages.…”

Section: Figmentioning

confidence: 75%

Brazilian Begomovirus Populations Are Highly Recombinant, Rapidly Evolving, and Segregated Based on Geographical Location

Rocha

Urquiza

Lima

et al. 2013

J Virol

107

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eThe incidence of begomovirus infections in crop plants sharply increased in Brazil during the 1990s following the introduction of the invasive B biotype of the whitefly vector, Bemisia tabaci. It is believed that this biotype transmitted begomoviruses from noncultivated plants to crop species with greater efficiency than indigenous B. tabaci biotypes. Either through rapid host adaptation or selection pressure in genetically diverse populations of noncultivated hosts, over the past 20 years various previously unknown begomovirus species have became progressively more prevalent in cultivated species such as tomato. Here we assess the genetic structure of begomovirus populations infecting tomatoes and noncultivated hosts in southeastern Brazil. Between 2005 and 2010, we sampled and sequenced 126 DNA-A and 58 DNA-B full-length begomovirus components. We detected nine begomovirus species in tomatoes and eight in the noncultivated host samples, with four species common to both tomatoes and noncultivated hosts. Like many begomoviruses, most species are obvious interspecies recombinants. Furthermore, species identified in tomato have probable parental viruses from noncultivated hosts. While the population structures of five well-sampled viral species all displayed geographical subdivision, a noncultivated host-infecting virus was more genetically variable than the four predominantly tomato-infecting viruses.

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Section: Figmentioning

confidence: 75%

Brazilian Begomovirus Populations Are Highly Recombinant, Rapidly Evolving, and Segregated Based on Geographical Location

Rocha

Urquiza

Lima

et al. 2013

J Virol

107

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“…This newly emerging recombinant is presently designated as cotton leaf curl Burewala virus (CLCuBuV). Only a single type of DNA β satellite, a recombinant mostly originating from CLCuMuB DNA β but with some sequence from a satellite isolated from tomato, is found to be associated with the disease but apparently lacking an alphasatellite (Amrao et al 2010;Tahir et al 2011). Recently, CLCuBuV has been reported from India dominating in many fields (Kumar et al 2011;Rajagopalan et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Siddique

Akhtar

Hameed

et al. 2014

Journal of Plant Interactions

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Leaf curl disease caused by Cotton Leaf Curl Burewala virus (CLCuBuV) has been recognized as serious threat to cotton in Indian subcontinent. However, information about cotton-CLCuBuV interaction is still limited. In this study, the level of phenolic compounds, total soluble proteins, and malondialdehyde (MDA) and the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POX), catalase (CAT), proteases, superoxide dismutase (SOD), and polyphenol oxidase (PPO) were studied in leaves of two susceptible (CIM-496 & NIAB-111) and two resistant (Ravi and Co Tiep Khac) cotton genotypes. Disease symptoms were mild in the resistant genotypes but were severe in highly susceptible genotypes. The results showed that phenolic compounds, proteins, PAL, POX, CAT, proteases, SOD, PPO, and MDA play an active role in disease resistance against CLCuBuV. The amount of total phenols, proteases, MDA, and PPO was significantly higher in leaves of CLCuBuV-inoculated plants of both resistant genotypes as in non-inoculated plants, and decreased in CLCuBuV-inoculated plants of both susceptible genotypes over their healthy plants. POX, protein content, SOD, and PAL activities showed lower values in resistant genotypes, while they decreased significantly in susceptible genotypes as compared to the noninoculated plants except PAL, which showed non-significant decrease. CAT was found to be increased in both susceptible and resistant genotypes with maximum percent increase in resistant genotype Ravi, as compared to non-inoculated plants. The results showed significantly higher concentrations of total phenols and higher activity of protease, MDA, SOD, and PPO in resistant genotype Ravi after infection with CLCuBuV, suggesting that there is a correlation between constitutive induced levels of these enzymes and plant resistance that could be considered as biochemical markers for studying plant-virus compatible and incompatible interactions.

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“…CLCuD is caused by a complex of viruses that belong to the genus Begomovirus, family Geminiviridae, commonly referred to as CLCuD-associated begomoviruses (CBVs). CBVs, in common with the majority of Old World begomoviruses, are monopartite, with genomes that consist of only one circular single-stranded DNA (ssDNA) molecule and are associated with betasatellite [13,45] and, frequently, a third component known as alphasatellite [4,10]. The CBV complex is transmitted by the whitefly Bemisia tabaci (Genn.…”

Section: Introductionmentioning

confidence: 99%

Dominance of resistance-breaking cotton leaf curl Burewala virus (CLCuBuV) in northwestern India

et al. 2012

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Cotton leaf curl disease (CLCuD) is a major limitation to cotton production on the Indian subcontinent. A survey for viruses causing CLCuD was conducted during the 2009 and 2010 cropping seasons in the northwestern Indian cotton-growing belt in the states of Punjab, Haryana and Rajasthan. Partial sequences of 258 and full-length sequences of 22 virus genomes were determined. This study shows that the resistance-breaking cotton leaf curl Burewala virus (CLCuBuV) is now the dominant virus in many fields. The spread and establishment of the mutant CLCuBuV in northwestern India, the variation in its genomic sequence, its virulence and infectivity, and the implications for cotton breeding are discussed.

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Cotton leaf curl disease in resistant cotton is associated with a single begomovirus that lacks an intact transcriptional activator protein

Cited by 110 publications

References 58 publications

Brazilian Begomovirus Populations Are Highly Recombinant, Rapidly Evolving, and Segregated Based on Geographical Location

Brazilian Begomovirus Populations Are Highly Recombinant, Rapidly Evolving, and Segregated Based on Geographical Location

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Dominance of resistance-breaking cotton leaf curl Burewala virus (CLCuBuV) in northwestern India

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