scholarly journals The effects of fosetyl-Al application on morphology and viability of Lycopersicon esculentum Mill. pollen

2008 ◽  
Vol 54 (No. 8) ◽  
pp. 336-340 ◽  
Author(s):  
İ. Öztürk Çalı
Keyword(s):  
Lycopersicon Esculentum ◽  
Pollen Fertility ◽  
Pollen Viability ◽  
Polar View ◽  
The Other ◽  
Control Group ◽  
Recommended Dosage ◽  
Viable Pollen ◽  
Pollen Types ◽  
Viability Level

In the present study, the effects of fungicide Aliette WG 800 [80% fosetyl-Al (aluminium tris-o-ethyl phosphonate)], widely used against <I>Phytophtora infestans</I> on tomatoes grown in greenhouse in Turkey, were studied on the morphology and viability of tomato (<I>Lycopersicon esculentum</I> Mill.) pollens. The fungicide was applied to tomatoes grown in greenhouse at recommended dosage (200 g/100 l water) and at double the recommended dosage (400 g/100 l water). The fungicide caused changes in the morphological structures of tomato pollens. Some pollen morphological structures that are not observed in the control group were encountered in the pollens in equatorial view and in polar view at 200 g/100 l treated groups. On the other hand, pollen viability level decreased as the dosage increased. Especially, non-viable pollen types such as wrinkled pollen or pollen with abnormal shape were encountered in the fungicide groups. It was expected that the pollen fertility as well as yield would decrease in future.

scholarly journals Effects of a fungicide on the morphology and viability of pollens of tomato (Lycopersicon esculentum Mill.)

1970 ◽  
Vol 38 (2) ◽  
pp. 115-118 ◽  
Author(s):  
Ilkay Öztürk Çali ◽  
Feyza Candan
Keyword(s):  
Lycopersicon Esculentum ◽  
Phytophthora Infestans ◽  
Key Words ◽  
Pollen Morphology ◽  
Pollen Viability ◽  
Polar View ◽  
Control Group ◽  
Recommended Dosage ◽  
Tomato Plants ◽  
Equatorial View

Effects of Agri Fos 400 (Mono and di-potassium phosphanate), a fungicide widely used on tomatoes grown in greenhouses in Turkey against Phytophthora infestans were studied on the morphology and viability of tomato (Lycopersicon esculentum Mill.) pollens. The fungicide was applied on tomato plants at recommended dosage (4 ml/l water) and double the recommended dosage (8 ml/l water). The fungicide caused changes in the morphological structures of pollens. Some pollen morphological structures that are not observed in the control group were encountered in the pollens due to application of Agri Fos 400 in equatorial view at 8 ml/l and in polar view at 4 ml/l. Level of pollen viability decreased as the dosage increased.   Key words: Fungicide; Phytophthora infestans; Tomato; Pollen morphology; Viability DOI: 10.3329/bjb.v38i2.5134 Bangladesh J. Bot. 38(2): 115-118, 2009 (December)

scholarly journals The influence of pollen viability on seed set and fruit mass in strawberry (fragaria x ananassa duch.)

2012 ◽  
Vol 61 (1) ◽  
pp. 79-84
Author(s):  
Elżbieta Kaczmarska ◽  
Agnieszka M. Dobrowolska ◽  
Jerzy A. Hortyński
Keyword(s):  
Pollen Fertility ◽  
Pollen Viability ◽  
Great Influence ◽  
Pollen Grains ◽  
Fragaria X Ananassa ◽  
Strawberry Fruit ◽  
Viable Pollen ◽  
Small Fruit ◽  
Horticultural Plant ◽  
Fruit Mass

This research was conducted in 2006 in the Experimental Station of the Department of Genetics and Horticultural Plant Breeding in Felin near Lublin. It included 7 cultivars of strawberry ('Pastel', 'Salut', 'Teresa', 'Jota', 'Paula', 'Senga Sengana', 'Plena') and two selected clones: 2395 and 3995 that belonged to the Department. Analysis of pollen fertility was carried out on the basis of materials collected on five occasions: on May 17 (at the beginning of florescence), May 20 and May 24 (the peak of florescence) and on June 2 and June 13 (the end of florescence). Smear preparations stained with 2% acetocarmin and glycerin solution (1:1) were used to test pollen viability. The highest percent of viable pollen in 2006 was in cultivar 'Jota' (70.88%). The lowest viability had pollen of 'Teresa' cultivar (33.83%). The average content of viable pollen grains was the lowest on May 20 (36.79%). The highest pollen fertility was noted on June 2 (62.15%), the percent of fertile pollen on a similar level was observed on May 17 and 24 and June13. The cultivar 'Jota' was characterized by an increased level of pollen fertility that was quite high during the whole period of florescence. The number of seeds has a great influence on the proper development of spurious strawberry fruit. The mass of seeds from a single fruit has a great influence on the mass of fruits in both large and small fruit categories. Pollen viability affected the mass of seeds on big fruits (r = 0.444), but there is no clear direct relationship between pollen fertility and mass of strawberry fruit(r = -0.193 and r = -0.052).

Pollen fertility in Musa: Viability in cultivars grown in Southern Australia

2004 ◽  
Vol 55 (10) ◽  
pp. 1085 ◽  
Author(s):  
J. A. Fortescue ◽  
D. W. Turner
Keyword(s):  
Pollen Fertility ◽  
Pollen Viability ◽  
Diploid Species ◽  
Female Fertility ◽  
Viable Pollen ◽  
Meiotic Restitution ◽  
Different Levels

Pollen viability was examined by recording the number of viable as well as non-viable microspores in anthers just before anthesis, as it could be an efficient and rapid indicator of female fertility. It was thought that competency in meiotic restitution in microspores could indicate similar competency in megaspores. Pollen fertility was compared among seeded diploids and edible triploids of Musa and correlated with ovule fertility. Viability was examined using the Alexander’s pollen stain procedure. The seeded diploid species M. acuminata, M. balbisiana, and M. ornata had 3 times more viable pollen than the edible tetraploids (AAAB). M. balbisiana and M. ornata had significantly more viable pollen than M. acuminata. The tetraploids contained 3 times more viable pollen than the edible triploids AAA and ABB and 4 times more than the AAB cultivars. The genome A or B did not affect pollen viability within the triploid cultivars examined. The AAA triploid Gros Michel had the highest percentage of viable pollen at 13% and Green/Red the lowest at 3%. Pollen viability was influenced by meiotic disturbances and an association was made between viability of pollen and viability of embryo sacs. Pollen viability from anthers of Australian grown species and cultivars of Musa a. ssp. (undescribed subspecies) was compared with published reports of pollen viability from Indian grown species and cultivars. The pollen viability between the Indian cultivated and wild diploids of Musa a. ssp. was similar at 50–66%, but less than the pollen viability of Australian diploid Musa a. ssp of 84%. The Indian-grown triploid cultivars had 21–29% viable pollen and the tetraploids had 28% viable pollen, whereas the Australian grown triploids had 6–10% viable pollen and the tetraploids 29% viable pollen. There was a difference in pollen viability between genome groups and within genome groups. Different species and cultivars of Musa possess different levels of competency in the production of microspores, which correlated positively with levels of megaspore fertility in the same species and cultivars.

Development of the Anther and Ovule in Capsicum L

1978 ◽  
Vol 26 (3) ◽  
pp. 433 ◽  
Author(s):  
P Dharamadhaj ◽  
N Prakash
Keyword(s):  
Pollen Fertility ◽  
Embryo Sac ◽  
Pollen Grains ◽  
The Other ◽  
Flower Buds ◽  
Viable Pollen ◽  
Male And Female

The structure of the anther and ovule and the development of the male and female gametophytes have been studied in seven cultivated varieties of Capsicum-C. annuum L. var. acuminatum Fingerh. (long red cayenne), C. annuum L. cv. Floral Gem, C. annuum L, var. grossum (L.) Sendt. (giant bell), C. annuum var. longum (DC.) Sendt. (long sweet yellow), C. baccatum L. var. pendulum (Willd.) Eshbaugh, C. frutescens L, var. baccatum (L.) Irish and C. frutescens L, cv. Tabasco. Marked differences in the development were observed between flower buds formed in summer and in winter. In the anthers of winter flower buds of C. annuum var, acuminatum the pollen grains show nuclear multiplication and pollens with all nuclear numbers between two and eight are represented. However, 'pollen embryo sacs' as such are not formed. The normal viable pollen grains are binucleate. The pollen fertility in summer is 93.6% while in winter, on the same plants, it is only 31.3 %. In the development of the ovule there are no marked differences amongst the varieties except in size. Coexistence of mono-, bi- and tetrasporic embryo sac developments has been found in C. annuum var. acuminatum in which monospory is dominant in summer but bispory in winter. Monosporic and bisporic embryo sacs coexist in C. baccatum var. pendulum and C. frutescens var. baccatum. The other varieties show only monosporic development.

scholarly journals Effects of fungicide on meiosis of tomato (Lycopersicon esculentum Mill.)

1970 ◽  
Vol 37 (2) ◽  
pp. 121-125
Author(s):  
Ilkay Öztürk Çali
Keyword(s):  
Lycopersicon Esculentum ◽  
Pollen Fertility ◽  
Tap Water ◽  
Recommended Dosage ◽  
Lycopersicon Esculentum Mill ◽  
Manufacturing Company ◽  
Negative Effect

The effects of Equation Pro (22.5 % Famoxadone + 30% Cymoxanil) fungicide applied to tomato grown in greenhouse at recommended dosage (40 g/100 l tap water) by manufacturing company and double the recommended dosage (80 g/100 l tap water) were investigated on pollen meiosis. It was observed that the fungicide used in trial applications caused anomalies in pollen meiosis in parallel with the increase in dosage. It is obvious that this condition will have a negative effect on pollen fertility.  

Detection and Assessment of Interleukin 6 in Irreversible Pulp Inflamation

2017 ◽  
Vol 68 (2) ◽  
pp. 323-327
Author(s):  
Cristian Levente Giuroiu ◽  
Maria Vataman ◽  
Gabriel Melian ◽  
Dragos Bularda ◽  
Ludmila Lozneanu ◽  
...  
Keyword(s):  
Dental Caries ◽  
Interleukin 6 ◽  
Dental Pulp ◽  
The Other ◽  
Control Group ◽  
Study Group ◽  
Pulp Tissue ◽  
Immunohistochemical Technique ◽  
Systemic Distribution ◽  
Cell Zone

The study aimed to assess the number, localization and distribution of interleukin 6 (IL-6) positive cells in healthy pulp, acute and chronic pulpitis. The study group included 48 patients aged between 18-72, treated in University of Medicine and Pharmacy Grigore T. Popa Iasi, Romania. The pulpectomy was performed on 42 patients diagnosed with acute and chronic pulpitis. The other 6 patients, without signs of dental caries or periodontal disease, were submitted to extractions of teeth for orthodontic purposes, with pulpectomy performed before extraction. The pulp samples were examined with optic microscope. The detection and assessment of IL-6 were performed using immunohistochemical technique. Data were statistically analysed using non-parametric tests. According to morphopathological criteria, 42.85% were classified as acute pulpitis and 57.14% as chronic pulpitis. The pulp samples in control group were not associated with IL-6 positive cells. The analysis of all samples with acute and chronic pulpitis identified 73.80% samples with IL-6 and 26.20% associated with the absence of IL-6. The highest frequency of IL-6 positive cells was recorded in rich-cell zone of crown dental pulp. The systemic distribution of IL-6 positive cells was mostly diffused without well-defined orientation. IL-6 release in acute and chronic pulpitis is significantly higher comparing with healthy pulp tissue.

Antimicrobial Effect of 940 nm Diode Laser based on Photolysis of Hydrogen Peroxide in the Treatment of Periodontal Disease

2018 ◽  
Vol 69 (8) ◽  
pp. 2081-2088 ◽  
Author(s):  
Alin Alexandru Odor ◽  
Edwin Sever Bechir ◽  
Deborah Violant ◽  
Victoria Badea
Keyword(s):  
Hydrogen Peroxide ◽  
Laser Therapy ◽  
Diode Laser ◽  
Antimicrobial Effect ◽  
The Other ◽  
Control Group ◽  
Group 4 ◽  
Periodontal Bacteria ◽  
Severe Periodontitis ◽  
Before And After

Moderate and severe periodontitis represents a challenge in the non-surgical periodontal therapy. Due to the lack of evidence regarding the antimicrobial effectiveness of 940 nm diode laser in periodontal treatment, this study aimed to evaluate the antimicrobial effect of hydrogen peroxide (H2O2) photolysis performed with 940 nm diode laser in the treatment of moderate and severe periodontitis. Twenty-five patients with 100 teeth were selected for this pilot study. The test teeth were randomly assigned to one of the four treatment groups: Group 1: scaling and root planning (SRP) (control group); and the following experimental groups: Group 2: H2O2; Group 3: 940 nm diode laser therapy; Group 4: 940 nm diode laser therapy and H2O2. Clinical examinations, like probing depth (PD), clinical attachment level (CAL) and bleeding on probing (BOP) were performed before and after the treatment. The microbiological evaluation, effectuated before and after the treatment, included nine periodontal bacteria species and investigated by means of real-time PCR assay. The clinical and bacterial differences in the tested groups, was assessed between control group and the other three experimental groups, as well as between the experimental groups. The total bacteria load was reduced for all four studied groups. Group 4 (diode laser + H2O2) showed significant bacterial reduction of the major periodontal bacteria like Pg., Tf., Td., Pi., Pm., Fn (p[0.001) than the other 3 groups (p]0.001). Also the periodontal clinical parameters, like PD, CAL and BOP showed a significant reduction after the photolysis of H2O2 with the 940 nm diode laser (p[0.001). Differences between tested groups showed a significant beneficial results in regard to Group 4.It is suggested that the photoactivation of H2O2 with the 940 nm diode laser can be used successfully in adjunctive to the non-surgical periodontal treatment as a bactericidal tool.

scholarly journals Psycho-Electrophysiological Benefits of Forest Therapies Focused on Qigong and Walking with Elderly Individuals

2021 ◽  
Vol 18 (6) ◽  
pp. 3004
Author(s):  
Jiyune Yi ◽  
Seul Gee Kim ◽  
Taegyu Khil ◽  
Minja Shin ◽  
Jin-Hee You ◽  
...  
Keyword(s):  
Urban Forest ◽  
Nervous Activity ◽  
Health Problems ◽  
The Other ◽  
Upper Body ◽  
Sympathetic Nervous Activity ◽  
Control Group ◽  
Beta Band ◽  
Elderly Individuals ◽  
Beneficial Effects

We developed two distinct forest therapy programs (FTPs) and compared their effects on dementia prevention and related health problems for older adults. One was focused on Qigong practice in the forest (QP) and the other involved active walking in the forest (WP). Both FTPs consisted of twelve 2-h sessions over six weeks and were conducted in an urban forest. We obtained data from 25, 18, and 26 participants aged 65 years or above for the QP, WP, and control groups, respectively. Neuropsychological scores via cognition (MoCA), geriatric depression (GDS) and quality of life (EQ-5D), and electrophysiological variables (electroencephalography, bioimpedance, and heart rate variability) were measured. We analyzed the intervention effects with a generalized linear model. Compared to the control group, the WP group showed benefits in terms of neurocognition (increases in the MoCA score, and alpha and beta band power values in the electroencephalogram), sympathetic nervous activity, and bioimpedance in the lower body. On the other hand, the QP group showed alleviated depression and an increased bioimpedance phase angle in the upper body. In conclusion, both active walking and Qigong in the forest were shown to have distinctive neuropsychological and electrophysiological benefits, and both had beneficial effects in terms of preventing dementia and relieving related health problems for elderly individuals.

scholarly journals Antioxidant activity of Lactobacillus plantarum NJAU-01 in an animal model of aging

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Qingfeng Ge ◽  
Bo Yang ◽  
Rui Liu ◽  
Donglei Jiang ◽  
Hai Yu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Capacity ◽  
Lactobacillus Plantarum ◽  
Meat Product ◽  
The Other ◽  
Oxidative Stress Marker ◽  
Control Group ◽  
Intragastric Administration ◽  
Aging Effects ◽  
Sterile Saline

Abstract Background Excessive reactive oxygen species (ROS) can cause serious damage to the human body and may cause various chronic diseases. Studies have found that lactic acid bacteria (LAB) have antioxidant and anti-aging effects, and are important resources for the development of microbial antioxidants. This paper was to explore the potential role of an antioxidant strain, Lactobacillus plantarum NJAU-01 screened from traditional dry-cured meat product Jinhua Ham in regulating D-galactose-induced subacute senescence of mice. A total of 48 specific pathogen free Kun Ming mice (SPF KM mice) were randomly allocated into 6 groups: control group with sterile saline injection, aging group with subcutaneously injection of D-galactose, treatments groups with injection of D-galactose and intragastric administration of 107, 108, and 109 CFU/mL L. plantarum NJAU-01, and positive control group with injection of D-galactose and intragastric administration of 1 mg/mL Vitamin C. Results The results showed that the treatment group of L. plantarum NJAU-01 at 109 CFU/mL showed higher total antioxidant capacity (T-AOC) and the antioxidant enzymatic activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) than those of the other groups in serum, heart and liver. In contrast, the content of the oxidative stress marker malondialdehyde (MDA) showed lower levels than the other groups (P < 0.05). The antioxidant capacity was improved with the supplement of the increasing concentration of L. plantarum NJAU-01. Conclusions Thus, this study demonstrates that L. plantarum NJAU-01 can alleviate oxidative stress by increasing the activities of enzymes involved in oxidation resistance and decreasing level of lipid oxidation in mice.

scholarly journals The change of gut microbiota in MDD patients under SSRIs treatment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yang Shen ◽  
Xiao Yang ◽  
Gaofei Li ◽  
Jiayu Gao ◽  
Ying Liang
Keyword(s):  
Gut Microbiota ◽  
Maximum Dose ◽  
Antidepressant Treatment ◽  
Intestinal Flora ◽  
Alpha Diversity ◽  
The Other ◽  
Control Group ◽  
Depressed Patients ◽  
Metabolic Functions

AbstractThe alterations in the gut microbiota have been reported to be correlated with the development of depression. The purpose of this study was to investigate the changes of intestinal microbiota in depressed patients after antidepressant treatment. We recruited 30 MDD patients (MDD group) and 30 healthy controls (control group). The MDD group received individualized treatment with escitalopram at a maximum dose of 20 mg/day. After depressive symptoms improved to a HAMD scale score > 50%, a fecal sample was collected again and used as the follow-up group. The differences of gut microbiota between patients and controls, the characteristics of gut microbiota under treatment and the potential differences in metabolic functions were thus investigated. The Firmicutes/Bacteroidetes ratio was significantly different within three groups, and the ratio of follow-up group was significantly lower than those of the other two groups. Alpha diversity was significantly higher in MDD group than those of the other groups, and the alpha diversity was not significantly different between control and follow-up groups. The beta diversity of some patients resembled participants in the control group. The metabolic function of gut microbiota after treatment was still different from that of the control group. This study suggests that the intestinal flora of depressed patients has a tendency to return to normal under escitalopram treatment.

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