Khalid Pervaiz Akhtar

ORCID: 0000-0002-7310-6741
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About
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Research Areas
  • Plant Virus Research Studies
  • Insect-Plant Interactions and Control
  • Plant and Fungal Interactions Research
  • Phytoplasmas and Hemiptera pathogens
  • Plant Pathogenic Bacteria Studies
  • Plant Pathogens and Fungal Diseases
  • Cocoa and Sweet Potato Agronomy
  • Research in Cotton Cultivation
  • Plant-Microbe Interactions and Immunity
  • Agricultural pest management studies
  • Fungal Plant Pathogen Control
  • Plant Parasitism and Resistance
  • Plant Pathogens and Resistance
  • Plant pathogens and resistance mechanisms
  • Genetic and Environmental Crop Studies
  • Agricultural Practices and Plant Genetics
  • Plant Disease Resistance and Genetics
  • Agriculture, Plant Science, Crop Management
  • Plant Disease Management Techniques
  • Soybean genetics and cultivation
  • Insect Resistance and Genetics
  • Botanical Research and Chemistry
  • Powdery Mildew Fungal Diseases
  • Peanut Plant Research Studies
  • Biological Control of Invasive Species

Nuclear Institute for Agriculture and Biology
2015-2025

Pakistan Institute of Engineering and Applied Sciences
2024-2025

National University of Sciences and Technology
2020-2021

Leaf curl disease caused by Cotton 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) activities phenylalanine ammonia-lyase (PAL), peroxidase (POX), catalase (CAT), proteases, superoxide dismutase (SOD), polyphenol oxidase (PPO) were studied leaves two susceptible (CIM-496...

10.1080/17429145.2014.905800 article EN cc-by Journal of Plant Interactions 2014-01-02

Abstract Cotton leaf curl disease (CLCuD), caused by cotton viruses (CLCuVs), is among the most devastating diseases in cotton. While widely cultivated species Gossypium hirsutum generally susceptible, diploid G. arboreum a natural source for resistance against CLCuD. However, influence of CLCuD on transcriptome and interaction with remains to be elucidated. Here we have used an RNA-Seq based study analyze differential gene expression under infestation. plants were infested graft inoculation...

10.1038/s41598-017-15963-9 article EN cc-by Scientific Reports 2017-11-15

Resistance to key first-line drugs is a major hurdle achieve the global end tuberculosis (TB) targets. A prodrug, pyrazinamide (PZA) only drug, effective in latent TB, recommended drug resistance and susceptible Mycobacterium (MTB) isolates. The prodrug conversion into active form, pyrazinoic acid (POA), required activity of pncA gene encoded pyrazinamidase (PZase). Although mutations have been commonly associated with PZA but small number cases mutationss RpsA protein. Here this study total...

10.1038/s41598-019-44013-9 article EN cc-by Scientific Reports 2019-05-16

ABSTRACT Mungbean is an economically important short‐duration traditional pulse crop in Pakistan. During a routine inspection of mungbean fields the summer 2018, unusual disease symptoms reminiscent Tospovirus were observed for first time. These include severe leaf chlorosis, necrosis, plant stunting and death. To identify causal virus, symptomatic fresh leaves analysed following RT‐PCR using GBNV‐specific primer pair which resulted amplification ~0.8 kbp fragment specific to CP gene...

10.1111/jph.70022 article EN Journal of Phytopathology 2025-01-01

Cotton leaf curl disease (CLCuD), caused by cotton Burewala virus (CLCuBV), has emerged as a major threat to production in Pakistan. Resistance CLCuBV was evaluated cultivated and wild genotypes representing six Gossypium species visual symptom scoring assessment using PCR tests. Considerable variation responses observed when whitefly graft transmission inoculate with field greenhouse experiments. Under evaluation, all of hirsutum three G. barbadense were susceptible. Eleven that represented...

10.1111/j.1744-7348.2010.00416.x article EN Annals of Applied Biology 2010-05-27

Yellow mosaic disease (YMD) is one of the major diseases affecting mungbean (Vigna radiata (L.) Wilczek). In this study, we report mapping quantitative trait locus (QTL) for yellow India virus (MYMIV) resistance in mungbean. An F8 recombinant inbred line (RIL) population was generated Thailand from a cross between NM10-12-1 (MYMIV resistance) and KPS2 susceptible). One hundred twenty-two RILs their parents were evaluated MYMIV infested fields Pakistan. A genetic linkage map developed RIL...

10.1270/jsbbs.63.367 article EN Breeding Science 2013-01-01

Severe acute respiratory syndrome virus 2 (SARS-CoV-2) belongs to the single-stranded positive-sense RNA family. The contains a large genome that encodes four structural proteins, small envelope (E), matrix (M), nucleocapsid phosphoprotein (N), spike (S), and 16 nonstructural proteins (nsp1-16) together, ensure replication of in host cell. Among these interactions N Nsp3 are essential links viral for processing. reside at CoV synthesis sites known as replication-transcription complexes...

10.1007/s00203-020-01998-6 article EN other-oa Archives of Microbiology 2020-08-04

Phyllody is a serious disease of sesame in Pakistan. In the present study investigations were carried out on symptomatology, etiology, and transmission this disease. Floral virescence, phyllody, proliferation are most common symptoms. Sometimes these symptoms accompanied by yellowing, cracking seed capsules, germination seeds formation dark exudates foliage. Shoot apex fasciation has also been occasionally observed, but no phytoplasma DNA detected fasciated plants using PCR assays. Light...

10.3906/tar-0901-23 article EN TURKISH JOURNAL OF AGRICULTURE AND FORESTRY 2009-01-01

During spring 2005–06 chickpea plants (cvs Desi and Kabuli) were found to be affected by a previously undescribed disease in Pakistan. Symptoms consisted of proliferation branches with smaller leaflets, giving bushy appearance the plants. Affected scattered field more easily spotted at flowering podding time. The flowers developed abnormal green structures (phyllody) instead normal flowers. At time crop maturity when healthy drying diseased conspicuously green. Tissue samples from without...

10.1111/j.1365-3059.2007.01800.x article EN Plant Pathology 2008-07-18

Studies were conducted to identify the sources of resistance in mungbean recombinant inbred lines (RILs) Thailand against yellow mosaic disease (MYMD). 146 RILs <TEX>$F_8$</TEX> series evaluated a field including resistant parent NM-10-12-1 and susceptible KPS 2 during summer 2008 under high inoculum pressure. The subsequently scored for symptom severity ratings (DSSR) using new scale. Observations regarding DSSR % index (%DI) showed that tested responded differently disease. A large number...

10.5423/ppj.2009.25.4.422 article EN cc-by-nc The Plant Pathology Journal 2009-12-01

Abstract Objective Phyllody disease caused by phytoplasma is an emerging problem in mungbean worldwide. However, the alterations host physiology and its associated biochemical components induced infection with plant remain unknown. Hence present study was performed diseased plants order to determine patho-physiological changes that take place. Methods Under study, total phenolic compounds, soluble proteins, peroxidase (POD), catalase (CAT), polyphenol oxidase (PPO), Chlorophyll a, b,...

10.1515/tjb-2016-0304 article EN cc-by Turkish Journal of Biochemistry 2017-02-14

10.3923/pjbs.2002.246.250 article EN Pakistan Journal of Biological Sciences 2002-01-15

Sesame phyllody disease has been recorded on sesame in Pakistan for a number of years, and is characterized by virescence, phyllody, yellowing, floral sterility stem proliferation infected plants. The causes significant losses (Sarwar et al., 2006) but prior to this report the causal agent had not identified. However, Oman, phytoplasmas 16SrII group have reported as (Al-Sakeiti 2005). Tissue samples from uninfected plants were examined using light microscope Dienes' stain. Regularly...

10.1111/j.1365-3059.2008.01872.x article EN Plant Pathology 2008-07-18

Charcoal rot caused by Macrophomina phaseolina is a serious disease of sesame in Pakistan. M. isolate was subjected to growth rate test at 10, 15, 20, 25, 30, 35 and 40°C. The optimum temperature for fungal microsclerotia production found be 30–35°C. Gray black, radial colonies with intermediate mycelial jet black oval round were observed this range. pathogenic against all the 18 tested plant species pathogenicity proved its necrophytic behavior. Seed infection efficiency 100% significant...

10.1080/03235400903052945 article EN Archives of Phytopathology and Plant Protection 2011-02-01

Chickpea chlorotic dwarf virus (CpCDV, genus Mastervirus, family Geminiviridae) is the most common viral disease of chickpea in Pakistan. Two aphid [Aphis craccivora Koch, Myzus persicae (Sulzer)], two leafhopper [Empoasca devastans Distant, Orosius albicinctus (Distant)] species and an unidentified brown were collected a field by hand sweep nets for transmission studies CpCDV. Transmission results showed that only O. successfully transmitted CpCDV from diseased to healthy plants. The...

10.17221/45/2009-pps article EN cc-by-nc Plant Protection Science 2011-03-31
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