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13 results on '"Azmat, Saira"'

3. Morphogenetic characterization of Stenotrophomonas maltophilia infecting white stripe disease of rice (Oryza sativa L.).

Author

AZMAT, Saira, RIAZ, Kashif, DILFEROZE, Ansa, HAMEED, Akhtar, FIAZ, Sajid, ATTIA, Kotb A., SUKHERA, Muhammad N., ABUSHADY, Asmaa M., ALAM, Muhammad W., and ALI, Subhan

Subjects
*RICE diseases & pests, *GRAM-negative bacteria, *STENOTROPHOMONAS maltophilia, *NITRATE reductase, *PHYTOPATHOGENIC microorganisms
Abstract

Rice is a major cereal crop which ensure food security to more than half of the global population. Several biotic factors impact rice grain quality and its final production. White stripe disease, caused by pathogen Stenotrophomonas maltophilia is considered among the major limiting factor for reducing rice yields and quality. Present study was performed to understand the white stripe disease, which has been frequently misdiagnosed as bacterial leaf blight (BLB) due to similar symptoms. A survey was carried out based on accessibility and farmer participation to monitor incidence and sample collection. The survey was conducted in districts Faisalabad, Gujranwala, Sialkot, Sheikhupura, and Hafizabad, these districts were selected for their importance for rice cultivation in Pakistan. The total sample size was around 500 leaves distributed evenly throughout each study area. The results of study indicated presence of new pathogen of rice. These isolates were biochemically identified and confirmed by gram staining negative, 3% KOH positive, 5% salt tolerance positive, oxidase test negative, catalase test positive, starch hydrolysis test negative, nitrate reductase test positive, indole test negative, lactose test positive, maltose test positive, methyl red test negative, Vogesprokauer test negative and urea hydrolysis test negative. The pathogenicity test was confirmed that pathogen and the Sialkot isolate were the most aggressive isolate among the five isolates collected form the studied areas. The molecular characterization was accomplished by PCR and sequencing. The results of the phylogenetic study indicate that this pathogen belongs to a distinct group, as it is distantly related to Xanthomonas oryzae pv. oryzae (Xoo). This study provides important findings into a novel clade of pathogen causing white stripe disease in rice. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Mulberry based zinc nano-particles mitigate salinity induced toxic effects and improve the grain yield and zinc bio-fortification of wheat by improving antioxidant activities, photosynthetic performance, and accumulation of osmolytes and hormones

Author

Chattha, Muhammad Umer, primary, Amjad, Tahira, additional, Khan, Imran, additional, Nawaz, Muhammad, additional, Ali, Muqarrab, additional, Chattha, Muhammad Bilal, additional, Ali, Hayssam M., additional, Ghareeb, Rehab Y., additional, Abdelsalam, Nader R., additional, Azmat, Saira, additional, Barbanti, Lorenzo, additional, and Hassan, Muhammad Umair, additional

Published
2022
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6. Molecular tools, potential frontiers for enhancing salinity tolerance in rice: A critical review and future prospective

Author

Rasheed, Adnan, primary, Li, Huijie, additional, Nawaz, Muhammad, additional, Mahmood, Athar, additional, Hassan, Muhammad Umair, additional, Shah, Adnan Noor, additional, Hussain, Fiaz, additional, Azmat, Saira, additional, Gillani, Syed Faheem Anjum, additional, Majeed, Yasir, additional, Qari, Sameer H., additional, and Wu, Ziming, additional

Published
2022
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11. Management of Chili leaf curl disease (ChiLCD) through resistant germplasm and Nutrients in relation to Environmental Factors

Author

Ghafoor, Aleena, Ali, Safdar, Zeshan, Muhammad Ahmad, Ghani, Muhammad Usman, Mahmood, Rizwan, Azmat, Saira, Khan, Asim Ali, Ghafoor, Aleena, Ali, Safdar, Zeshan, Muhammad Ahmad, Ghani, Muhammad Usman, Mahmood, Rizwan, Azmat, Saira, and Khan, Asim Ali

Abstract

Chili (Capsicum annuum L.) is an important commercial spicy crop grown in many regions across the world. Six chili varieties such as Zinia F1, Desi (Jalalpuri), Desi (Jalalpuri 2), Wonder Hot, Summer Queen F1, and Faisalabad Selection was evaluated against the most devastating and catastrophic Chili’s leaf curl disease caused by Begomovirus Chili leaf curl virus (ChiLCV). Out of all six varieties, Wonder Hot and Summer Queen F1 showed moderately resistant (MR) response whereas three varieties including Zinia F1, Desi (Jalalpuri) and Desi (Jalalpuri 2) had a moderately susceptible (MS) response, and only one variety namely Faisalabad Selection, expressed resistant (R) response. Four varieties; Desi (Jalalpuri), Desi (Jalalpuri 2), Zinia F1, and Wonder Hot, were used for management purposes with four micronutrients in combinations, namely T1 (ZnSO4 + CuSO4), T2 (MnSO4 + CuSO4), T3 (Boric Acid + CuSO4) and T4 (ZnSO4 + CuSO4 + MnSO4 + Boric Acid). When compared to control (58.14%), only T4 demonstrated minimum disease severity (11.63%). In the case of disease incidence, T4 gave the best results with minimum disease incidence (35.65%) as compared to control (92.59%). Treatments were able to decrease the disease progression even in the existing of favorable environmental factors.There was significant (p˂0.05) but positive correlation between wind speed and disease severity. Wind speed was highly correlated with the disease severity of variety Wonder Hot (r=0.91). We concluded that the application of micronutrient activate the plant defense system and at the same time suppress the vector populations.

Published
2022

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