Role of ?-galactosidase in cell wall metabolism of date palm (Phoenix dactylifera) endosperm

PROTOPLASMA ◽  
1992 ◽  
Vol 166 (3-4) ◽  
pp. 177-186 ◽  
Author(s):  
Darleen A. DeMason ◽  
Monica A. Madore ◽  
K. N. Chandra Sekhar ◽  
Marilyn J. Harris
Keyword(s):  
Cell Wall ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Cell Wall Metabolism

scholarly journals Salicylic acid and potassium nitrate promote flowering through modulating the hormonal levels and protein pattern of date palm Phoenix dactylifera ‘Sayer’ offshoot

2019 ◽  
Vol 114 (2) ◽  
pp. 231 ◽  
Author(s):  
Hussein Jasim SHAREEF
Keyword(s):  
Salicylic Acid ◽  
Molecular Mass ◽  
Date Palm ◽  
Salt Water ◽  
Protein Pattern ◽  
Phoenix Dactylifera ◽  
Potassium Nitrate ◽  
Protein Patterns ◽  
Nitrate Treatment

<p>Salicylic acid enhances the flowering process in the plant by creating new proteins under salinity stress. The study was to determine the role of salicylic acid (500 ppm) and potassium nitrate (1500 ppm), on flowering of date palm ‘Sayer’ offshoots under salinity effect. Application of salicylic acid increased the number of clusters, the number of new leaves, the content of carbohydrates, ascorbic acid, indoleacetic acid, zeatin, gibberellin, and abscisic acid significantly under salinity compared with control. Although the measured parameters were the highest in plants treated with salicylic acid, there was no distinction among potassium nitrate treatment under saltwater, and salicylic acid treatment with saltwater. Salicylic acid and potassium nitrate treatment demonstrated some amazing contrasts in protein patterns in light of gel electrophoresis. Plants treated with salicylic acid with fresh water and with saltwater showed five and six protein bands, respectively, that differed in the molecular mass of one polypeptide compared to control with freshwater. However, there was a difference in the molecular mass of two polypeptides compared to control with salt water, which showed six bands. In contrast, potassium nitrate application showed five protein bands, whether with freshwater or with saltwater. The findings could facilitate to elucidate the flowering mechanisms in date palm.<br /><strong></strong></p>

scholarly journals The Role of Date Palm (Phoenix dactylifera L) Pollen in Fertility

2016 ◽  
Vol 21 (4) ◽  
pp. 320-324 ◽  
Author(s):  
Mohammad Tahvilzadeh ◽  
Mannan Hajimahmoodi ◽  
Roja Rahimi
Keyword(s):  
Date Palm ◽  
Experimental Studies ◽  
Phoenix Dactylifera ◽  
Beneficial Effects ◽  
Reproductive Effects ◽  
Phoenix Dactylifera L ◽  
Comprehensive Information ◽  
Ancient Times ◽  
Fertility Disorders

Date palm pollen (DPP) is the male reproductive dust of palm flowers used as dietary supplement especially as aphrodisiac and fertility enhancer in both women and men from ancient times. Although there are few clinical trials evaluating the beneficial effects of DPP in humans, various experimental studies have been conducted on the reproductive effects of DPP. Among the compounds isolated from DPP are amino acids, fatty acids, flavonoids, saponins, and estroles. The present review summarizes comprehensive information concerning the phytochemistry and pharmacological activities of DPP and its application in fertility disorders.

scholarly journals Date Palm (Phoenix dactylifera) Fruits as a Potential Cardioprotective Agent: The Role of Circulating Progenitor Cells

2017 ◽  
Vol 8 ◽  
Author(s):  
Ibrahim A. Alhaider ◽  
Maged E. Mohamed ◽  
K. K. M. Ahmed ◽  
Arun H. S. Kumar
Keyword(s):  
Progenitor Cells ◽  
Date Palm ◽  
Phoenix Dactylifera

scholarly journals Protective Role of Phoenix dactylifera Date Palm Pollen against Doxorubicin-Induced Toxicity in the Liver, Kidney, Testis and Biochemical Parameters in Male Rats

2021 ◽  
pp. 158-167
Author(s):  
Sara Faez Hassan ◽  
Muneef Saab Ahmed ◽  
Aziz Khalid Hameed
Keyword(s):  
Total Cholesterol ◽  
Date Palm ◽  
Antioxidant Properties ◽  
Phoenix Dactylifera ◽  
Protective Role ◽  
Male Rats ◽  
Positive Effects ◽  
White Rats ◽  
Date Palm Pollen

Date palm pollen (DPP) has a prophylactic role, known for its antioxidant effects. For this, the present study was designed to study the protective role of DPP against histological toxicity in hepatic, renal, and testicular tissues, as well as the level of (Total cholesterol, Triglyceride, Total proteins, Albumin, and testosterone hormone) in male white rats. The Iraqi date palm trees (Phoenix dactylifera L.) were selected from Salah Aldeen farms located at Salah Aldeen governorate. Pollen was collected from 20th March to 25th April 2019. This study used 20 male white rats that were distributed to four groups and weights close. All groups were given food and water continuously throughout the experiment, the second group (DPP) was given an orally administered suspension of date palm pollen (60 mg/kg) every day for four weeks, the third group intraperitoneal injections were given (10 mg/kg), and the fourth group (10 mg/kg) were given intraperitoneal injections one time per week and four weeks, in addition to that, orally-administered suspension of DPP (60 mg/kg) was given as well every day for four weeks. The results of the study showed a significant increase (P≤0.05) in the level of total cholesterol (TC), triglycerides (TG), and a significant decrease (P≤0.05) in the level of Total Protein, Albumin, and testosterone hormones, Current results suggest that the protective effect of (DPP) may by its antioxidant properties, and thus reduce the positive effects.

scholarly journals Role of PknB Kinase in Antibiotic Resistance and Virulence in Community-Acquired Methicillin-Resistant Staphylococcus aureus Strain USA300

2010 ◽  
Vol 78 (8) ◽  
pp. 3637-3646 ◽  
Author(s):  
Sandeep Tamber ◽  
Joseph Schwartzman ◽  
Ambrose L. Cheung
Keyword(s):  
Staphylococcus Aureus ◽  
Cell Wall ◽  
Antibiotic Resistance ◽  
Aureus Strain ◽  
Cell Wall Metabolism ◽  
Methicillin Resistant ◽  
Enhanced Sensitivity ◽  
Threonine Kinases

ABSTRACT The regulation of cellular processes by eukaryote-like serine/threonine kinases is widespread in bacteria. In the last 2 years, several studies have examined the role of serine/threonine kinases in Staphylococcus aureus on cell wall metabolism, autolysis, and virulence, mostly in S. aureus laboratory isolates in the 8325-4 lineage. In this study, we showed that the pknB gene (also called stk1) of methicillin-resistant S. aureus (MRSA) strain COL and the community-acquired MRSA (CA-MRSA) strain USA300 is involved in cell wall metabolism, with the pknB mutant exhibiting enhanced sensitivity to β-lactam antibiotics but not to other classes of antibiotics, including aminoglycosides, ciprofloxacin, bactrim, and other types of cell wall-active agents (e.g., vancomycin and bacitracin). Additionally, the pknB mutant of USA300 was found to be more resistant to Triton X-100-induced autolysis and also to lysis by lysostaphin. We also showed that pknB is a positive regulator of sigB activity, resulting in compromise in its response to heat and oxidative stresses. In association with reduced sigB activity, the expression levels of RNAII and RNAIII of agr and the downstream effector hla are upregulated while spa expression is downmodulated in the pknB mutant compared to the level in the parent. Consistent with an enhanced agr response in vitro, virulence studies of the pknB mutant of USA300 in a murine cutaneous model of infection showed that the mutant was more virulent than the parental strain. Collectively, our results have linked the pknB gene in CA-MRSA to antibiotic resistance, sigB activity, and virulence and have highlighted important differences in pknB phenotypes (virulence and sigB activity) between laboratory isolates and the prototypic CA-MRSA strain USA300.

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