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1.
Sajad Ali Zahoor Ahmad Mir Anshika Tyagi Javaid A. Bhat Narayanappa Chandrashekar Pradeep Kumar Papolu Sandhya Rawat Anita Grover 《Acta Physiologiae Plantarum》2017,39(12):268
Pathogenesis-related proteins (PRs) are the antimicrobial proteins which are commonly used as signatures of defense signaling pathways and systemic acquired resistance. However, in Brassica juncea most of the PR proteins have not been fully characterized and remains largely enigmatic. In this study, full-length cDNA sequences of SA (PR1, PR2, PR5) and JA (PR3, PR12 and PR13) marker genes were isolated from B. juncea and were named as BjPR proteins. BjPR proteins showed maximum identity with known PR proteins of Brassica species. Further, expression profiling of BjPR genes were investigated after hormonal, biotic and abiotic stresses. Pre-treatment with SA and JA stimulators downregulates each other signature genes suggesting an antagonistic relationship between SA and JA in B. juncea. After abscisic acid (ABA) treatment, SA signatures were downregulated while as JA signature genes were upregulated. During Erysiphe cruciferarum infection, SA- and JA-dependent BjPR genes showed distinct expression pattern both locally and systemically, thus suggesting the activation of SA- and JA-dependent signaling pathways. Further, expression of SA marker genes decreases while as JA-responsive genes increases during drought stress. Interestingly, both SA and JA signature genes were induced after salt stress. We also found that BjPR genes displayed ABA-independent gene expression pattern during abiotic stresses thus providing the evidence of SA/JA cross talk. Further, in silico analysis of the upstream regions (1.5 kb) of both SA and JA marker genes showed important cis-regulatory elements related to biotic, abiotic and hormonal stresses. 相似文献
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Showket Ahmad Dar Samy Sayed Mohamed El-Sharnouby Muneer Ahmad Sofi Mudasir Hassan Rizwan Rashid Zahoor Ahmad Dar Sajad Hussain Mir Sayed-Ashraf Elarrnaouty Saad H.D. Masry Ivana Tlak Gajger 《Saudi Journal of Biological Sciences》2021,28(7):3720-3726
This paper represents an attempt to investigate the mating behaviour of Symmorphus allobrogus, explaining the willingness of male to mount and copulate. The male displays including mode and frequency of antennation and position while copulating, the displays further comprises of intensity and frequency of rejecting behaviour. The presence of the male’s copulatory and postcopulatory courtship studies, understands the maintenance of monandry. The wasp has numerous secondary sexual characters, and the mating behaviour follows a phyletic and the specific sexual mating characters in context of sexual selection. The duration of mating phases and the number of male antennation series during precopulatory, copulatory and postcopulatory phases of mounting, differs significantly. Mating success depends mostly on the activities of male in the premounting phase and the behaviour of both sexes has a roughly equal importance for it in precopulatory phase. While during copulation, activity of male has little influence on its duration; however, behaviour of female has crucial effect, inducing its earlier termination. 相似文献
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Iqbal Rabia Zahoor Tahir Huma Nuzhat Jamil Amer Ünlü Gülhan 《Probiotics and antimicrobial proteins》2019,11(3):830-839
Probiotics and Antimicrobial Proteins - Longevity of probiotic is the main concern for getting maximum benefits when added in food product. Bifidobacterium, a probiotic, tends to lose its viability... 相似文献
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Zahoor Ahmad Ejaz Ahmad Waraich Muhammad Zia ur Rehman Muhammad Ashar Ayub Muhammad Usman Hesham Alharby Atif Bamagoos Celaleddin Barutçular Muhammad Ali Raza Fatih Çiğ Ayman El Sabagh 《Phyton》2021,90(2):503-514
Water is essential for the growth period of crops; however, water unavailability badly affects the growth and physiological attributes of crops, which considerably reduced the yield and yield components in crops. Therefore, a pot
experiment was conducted to investigate the effect of foliar phosphorus (P) on morphological, gas exchange, biochemical traits, and phosphorus use efficiency (PUE) of maize (Zea mays L.) hybrids grown under normal as well as water
deficit situations at the Department of Agronomy, University of Agriculture Faisalabad, Pakistan in 2014. Two different
treatments (control and P @ 8 kg ha−1
) and four hybrids (Hycorn, 31P41, 65625, and 32B33) of maize were tested by
using a randomized complete block design (RCBD) with three replications. Results showed that the water stress caused
a remarkable decline in total soluble protein (9.7%), photosynthetic rate (9.4%) and transpiration rate (13.4%), stomatal
conductance (10.2%), and internal CO2 rate (20.4%) comparative to well-watered control. An increase of 37.1%, 36.8%,
and 24.5% were recorded for proline, total soluble sugar, and total free amino acid, respectively. However, foliar P
application minimized the negative impact of drought by improving plant growth, physio-biochemical attributes,
and PUE in maize plants under water stress conditions. Among the hybrids tested, the hybrid 6525 performed better
both under stress and non-stress conditions. These outcomes confirmed that the exogenous application of P improved
drought stress tolerance by modulating growth, physio-biochemical attributes, and PUE of maize hybrids. 相似文献
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Sumaira Naz Muhammad Zahoor Muhammad Naveed Umar Fatmah S. AlQahtany Yousif M. Elnahas Riaz Ullah 《Saudi Journal of Biological Sciences》2020,27(12):3267-3273
The 2-picolylamine is a simplest analogue of the alkaloid that has secondary and tertiary nitrogen function in its cyclic structure like that of alkaloids that can be derivatized to a number of biologically active compounds. In connection to our previous work, in the present work, three thiourea derivatives (I = 1,3-bis(2-benzyl-3-phenyl-1-(pyridine-2-yl) propyl) thiourea, II = 1,3-bis (pyridin-2-ylmethyl) thiourea, and III = 1-(2-benzyl-3-phenyl-1-(pyridine-2-yl) propyl)-3-phenylthiourea) were synthesized using 2-picolylamine template which is a readily available synthetic analogue of naturally occurring alkaloid. The biological effect of the synthesized derivatives were monitored on the activity of glucose-6-phosphatase in Swiss albino mice (21-days). The derivatives were also tested for their potential toxicity in a 28-days sub-chronic toxicity studies by assessing their effects on different parameters like hematological, serum biochemistry and liver histology. The therapeutic effect of the safe derivative (I) was examined in streptozotocin-induced diabetic mice as well. The derivatives showed inhibition of the enzyme activity from good to an excellent degree. Compound I had the highest inhibition with 21.42 ± 5.113 mg of the released phosphate as compared to that of the positive control group (84.55 ± 3.213 mg). Only I turned out to be safe for use in animals without exerting any toxic or lethal effects on any of the assessed parameters in the used animal model. Compound I efficiently reversed the effects like hyperglycemia, hyperlipidemia and weight loss in the test animals. Out of these three-tested compounds, I was found safe to be use as therapeutic agent in diabetes complications. However, further toxicological studies in other animal models are needed as well. 相似文献
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Zhang Q Zulfiqar F Xiao X Riazuddin SA Ahmad Z Caruso R MacDonald I Sieving P Riazuddin S Hejtmancik JF 《Human genetics》2007,122(3-4):293-299
Mutation in the PROM1 gene previously has been identified in one family with retinal degeneration for which neither ERG recordings
nor detailed information about visual impairment is available. A large family with multiple individuals affected by retinal
degeneration was ascertained in the Punjab province of Pakistan. The visual acuity of all affected patients in the family
was severely compromised beginning in early childhood. The retinal disease in this family is a severe form of retinitis pigmentosa
(RP) accompanied by macular degeneration. Fundus changes advanced with age. Choriocapillaris atrophy and posterior RPE atrophy
were obvious allowing visualization of the large choroidal vessels in patients over 40 years of age. Rod and cone responses
on ERG recordings were extinguished in patient’s teens. A genome-wide scan mapped the disease to a 34.7 cM region of chromosome
4p14–p16 between D4S1599 and D4S405. A maximum lod score of 3.96 with D4S403 and D4S391 is seen at θ = 0. Sequence analysis
of PROM1 located in the linkage interval identified a c.1726C>T homozygous transition in exon 15: resulting in p.Gln576X in
the translated protein. This mutation is found in a homozygous state in all six affected individuals and was heterozygous
in five of the six unaffected family members examined. The mutation was not detected in 192 chromosomes of unrelated control
individuals of the same ethnicity and from the same region. This delineates the phenotypic characteristics of retinopathy
caused by mutations in PROM1.
Qingjiong Zhang, Fareeha Zulfiqar, Xueshan Xiao, Sheikh Riazuddin and J. Fielding Hejtmancik contributed equally. 相似文献