Burewala Strain of Cotton Leaf Curl Virus: A Threat to CLCuV Cotton Resistant Varieties

Mahmood, Tariq; Arshad, Muhammad; Gill, M. I.; Mahmood, Hafiz Tariq; Tahir, Muhammad; Hussain, Sabahat

doi:10.3923/ajps.2003.968.970

Cited by 27 publications

(11 citation statements)

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“…According to a 2007 Food and Agriculture Organization (FAO) report, soil waterlogging affected 20–30 million hectares of irrigated land area due to highly changing weather condition ( Najeeb et al, 2015 ). G. hirsutum is susceptible to these stresses ( Mahmood et al, 2003 ), whereas G. arboreum is inherently tolerant but having poor fiber quality ( Ahmad et al, 2011 ). Introgression of resistance from Asiatic cotton to upland cotton ( G. hirsutum ) has been applied through conventional breeding techniques ( Ahmad et al, 2011 ), thus it is important to fully understand and characterize the resistance mechanisms in diploid progenitors, for engineering of higher resistance in economically important cotton species using molecular techniques.…”

Section: Introductionmentioning

confidence: 99%

Identification and Characterization of miRNA Transcriptome in Asiatic Cotton (Gossypium arboreum) Using High Throughput Sequencing

et al. 2017

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MicroRNAs (miRNAs) are small 20–24nt molecules that have been well studied over the past decade due to their important regulatory roles in different cellular processes. The mature sequences are more conserved across vast phylogenetic scales than their precursors and some are conserved within entire kingdoms, hence, their loci and function can be predicted by homology searches. Different studies have been performed to elucidate miRNAs using de novo prediction methods but due to complex regulatory mechanisms or false positive in silico predictions, not all of them express in reality and sometimes computationally predicted mature transcripts differ from the actual expressed ones. With the availability of a complete genome sequence of Gossypium arboreum, it is important to annotate the genome for both coding and non-coding regions using high confidence transcript evidence, for this cotton species that is highly resistant to various biotic and abiotic stresses. Here we have analyzed the small RNA transcriptome of G. arboreum leaves and provided genome annotation of miRNAs with evidence from miRNA/miRNA∗ transcripts. A total of 446 miRNAs clustered into 224 miRNA families were found, among which 48 families are conserved in other plants and 176 are novel. Four short RNA libraries were used to shortlist best predictions based on high reads per million. The size, origin, copy numbers and transcript depth of all miRNAs along with their isoforms and targets has been reported. The highest gene copy number was observed for gar-miR7504 followed by gar-miR166, gar-miR8771, gar-miR156, and gar-miR7484. Altogether, 1274 target genes were found in G. arboreum that are enriched for 216 KEGG pathways. The resultant genomic annotations are provided in UCSC, BED format.

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Section: Introductionmentioning

confidence: 99%

Identification and Characterization of miRNA Transcriptome in Asiatic Cotton (Gossypium arboreum) Using High Throughput Sequencing

et al. 2017

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“…Most recently the rebound of Cotton Leaf Curl Multan Virus (CLCuMuV) in northern Indian zone was suggested (Datta et al, 2017). CLCuD appeared in Pakistan in epidemic form during 1992-93 which decreased the production to 9.05 million bales and during 1993-94 season to 8.04 million bales (Mahmood et al, 2003). The financial losses with the estimated value of $5 billion (US) to the nation occurred from 1992-97 (Briddon and Markham, 2001).…”

Section: Methodsmentioning

confidence: 99%

Incidence and severity of cotton leaf curl virus disease on different BG II hybrids and its effect on the yield and quality of cotton crop

Monga¹,

Sain²

2021

JEB

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Aim: To understand the effect of Cotton Leaf Curl Disease incidence and severity at various crop growth stages on Bollgaurd-II cotton hybrids having different levels of susceptibility and resistance and its effect on, seed cotton yield and fibre quality. Methodology: The effect of cotton leaf curl disease (CLCuD) incidence, severity and its progress on highly resistant to susceptible cultivars was compared. The loss of seed cotton yield (SCY) corresponding to CLCuD incidence at 80 DAS, 81-110 DAS, 111-140 DAS was estimated separately in each hybrid. The loss of fibre quality corresponding to CLCuD incidence at seven different stages, i.e., 50 to 140 days after sowing (DAS) was also calculated. Results: The highest relative area under disease progress curve (AUDPC) values of PDI were observed in Ankur 3028 (100%) and Ankur Jai BG II (83%), while the lowest values were recorded in highly resistant hybrids Yuva-841-2 (4.6%) and Bunty 2113-2 (13.8%). When the disease appeared up to 80 DAS compared to 110, 140 DAS the reduction range in SCY (4.6-62.4%), fibre length (23.9-29.9%), strength (21.4-30.1%) and uniformity (62.5-83%) was recorded to be higher in susceptible hybrids. The fibre length, strength, and uniformity were reduced in diseased plant (25.9 mm, 24.4 g/tex, 68.2%) when incidence took place at 50 DAS compared to disease-free plants (27.6mm, 25.9 g/tex, 72.9%). However, reduction in SCY, fiber length, fiber strength and uniformity at 80 DAS varied with respect to hybrid and their resistance category. Interpretation: These results provide the basis to prove the hypothesis that the yield loss is associated with the stage of CLCuD incidence and its severity in cotton hybrids with different levels of resistance as well as its genetic potential of a particular cotton cultivar. However, the extent of yield reduction within the resistant or susceptible category is also dependent on the yield potential of a particular cultivar. Thus, breeders must consider both the criteria-lower PDI /AUDPC and higher productivity to select high yielding cotton lines. Key words: Cotton, Disease index, Leaf Curl Disease, Virus

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“…The possibility of recombination among the Geminiviruses and conducive environmental conditions increases the chances of new more virulent and resistance breaking variants of viruses knocked down the resistance (Shah et al, 1999; Chakrabarty et al, 2010) [61,18] . Those cultivars showed complete resistance against Cotton leaf curl Multan virus (CLCuMV) become susceptible to Cotton leaf curl Burewala virus (CLCuBuV) due to the emergence of more virulent new race of virus in this vicinity (Mahmood et al, 2003) [42] . As the phenomenon of recombination is responsible for the evolution of CLCuMV, CLCuBuV and similarly Cotton leaf curl ShahdadPur virus CLCuShV is a new recombinant sequence derived from Begomovirus species that were considered as epidemic of CLCuD in the Punjab during 1990s (Amrao et al 2010; Monga et al, 2011) [8,44] .…”

Section: Cotton Leaf Curl Disease (Clcud)mentioning

confidence: 99%

Emerging plant viruses in cotton

Valarmathi¹

2020

J Pharmacogn Phytochem

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Plants usually suffer from parasitic and non parasitic diseases in the world. One of the major groups that cause infections in plants belong to viruses, which is obligate parasite and replicate only in living cells. They are generally insect or seed transmitted and changes associated with global warming may affect both their incidence and severity. New virus diseases that are threatening the world's agricultural production are called "emerging diseases" which are commonly detected on different crop plants. Recent emerging viruses have RNA or DNA genome and belong to Potyviridae, Bunyaviridae, Geminiviridae, Closteroviridae, Betaflexiviridae and Secoviridae families. Plant virus diseases, like diseases caused by other pathogens, appear to be proliferating at ever increasing rates. Scientific and popular media abound with terms such as new, emerging, re-emerging and threatening plant diseases. In the present paper, the emerging viral diseases reported in cotton were discussed in detail.

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Burewala Strain of Cotton Leaf Curl Virus: A Threat to CLCuV Cotton Resistant Varieties

Cited by 27 publications

References 0 publications

Identification and Characterization of miRNA Transcriptome in Asiatic Cotton (Gossypium arboreum) Using High Throughput Sequencing

Identification and Characterization of miRNA Transcriptome in Asiatic Cotton (Gossypium arboreum) Using High Throughput Sequencing

Incidence and severity of cotton leaf curl virus disease on different BG II hybrids and its effect on the yield and quality of cotton crop

Emerging plant viruses in cotton

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