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Potassium-Induced Regulation of Cellular Antioxidant Defense and Improvement of Physiological Processes in Wheat under Water Deficit Condition

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 353-372页

作者： Abdul Awal Chowdhury Masud MdFazlul Karim M.H.M.Borhannuddin Bhuyan Jubayer Al Mahmud Kamrun Nahar Masayuki Fujita Mirza Hasanuzzaman Department of Agronomy Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Citrus research Center Bangladesh Agricultural Research InstituteJaintapur3156Bangladesh Department of Agroforestry and Environmental Science Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Department of Agricultural Botany Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Laboratory of Plant Stress Responses Department of Applied Biological SciencesKagawa UniversityKagawa761-0795Japan

Drought is the most common form of abiotic stress that reduces plant growth and *** causes plant injuries through elevated production of reactive oxygen species(ROS).Potassium(K)is a vital plant nutrient that notably ameliorates the detrimental effect of drought stress in the plant.A pot experiment was conducted at the Laboratory of Plant Stress Responses,Faculty of Agriculture,Kagawa University,Japan,under controlled environment of green house to explore the role of K in mitigating drought severity in wheat(Triticum asevitum L.)*** days after germination,seedlings were exposed to three water regimes viz.,100,50,and 20%field capacity(FC)for 21 *** was adjusted in Hoagland nutrient solution at 0,6 and 12 mM concentration and applied to pot instead of normal *** show that,water deficit stress notably reduced plant growth,biomass accumulation,leaf relative water content(RWC)along with reduced photosynthetic *** amount of biochemical stress markers viz.,malondialdehyde(MDA),hydrogen peroxide(H_(2)O_(2)),methylglyoxal(MG),proline(Pro)as well as an impaired antioxidant defense system were observed in drought affected wheat *** the contrary,K supplementation resulted in improvement of biochemical and physiological parameters that worked behind in improving growth and development of the wheat *** addition,enzymes of ascorbateglutathione(AsA-GSH)cycle were also enhanced by supplemented K that accelerated the ROS detoxification process in *** glyoxalse system did not performed well till MG was detoxified might following another short stepped *** results revealed that drought stressed plants showed better performances in terms of biochemical and physiological attributes,antioxidant defense and glyoxalase system,as well as ROS detoxification due to K supplementation with better performance at 12 mM K added in 50%FC growing condition.

关键词： Abiotic stress drought plant nutrient relative water content reactive oxygen species antioxidant H_(2)O_(2) methylglyoxal

Identification and Evaluation of Vitamin D Levels in Urban Children & Adolescents in Dhaka City, bangladesh through a Cross Sectional Study

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Journal of Biosciences and Medicines 2023年第9期11卷 37-51页

作者： Sharmin Hossain Mizanur Rahman Husneara Begum Nazrin Hussain Md. Ariful Islam Department of Community Medicine Dhaka National Medical College Dhaka Bangladesh Department of Orthopedics Dhaka National Medical College Dhaka Bangladesh Department of Community Medicine Enam Medical College Dhaka Bangladesh nondito bangla research & development Dhaka Bangladesh

Background: Vitamin D plays a pivotal role in supporting the immune system, helping to reduce the risk of infections and certain autoimmune diseases. Adequate vitamin D levels may be associated with a reduced risk of certain health conditions like pre-eclampsia, gestational diabetes, and postpartum depression. Brittle bones, osteoporosis in the elderly, and osteomalacia in young children are all symptoms of vitamin D insufficiency. Additionally, it contributes to problems linked to gum disease, including an increase in dental cavities, alveolar bone loss around the teeth, and other problems. It could lead to depression, tiredness, and a loss of appetite. In this study, urban children and adolescents in Dhaka city, bangladesh are examined for vitamin D deficiency, insufficiency, and sufficiency. Methods: The Study was a cross-sectional study conducted under Dhaka National Medical College and Hospital, Dhaka and additionally included two other health centers Medinova Medical Services and Monoara General Hospital Service Golap bag, Dhaka from October 2020 to November 2021. The study location was at the 3 (Three) different hospitals which was located in Dhaka City. In this cross-sectional study, Participants will be selected purposively and conveniently based on the age categories from 0 - 19 years of age at the outdoor department of the hospital. The study included the secondary dataset of ambulatory individuals who came to the 3 (three) hospitals, randomly to evaluate serum vitamin D levels on referral from a general out-patient-department (OPD). They were examined for laboratory findings of serum 25 hydroxyvitamin D levels to determine vitamin D deficiency, insufficiency, and sufficiency among children and adolescent groups of both male and female Sex. Results: A total of 6394 individuals with a diverse age group were statistically examined for laboratory findings of serum vitamin D levels. Vitamin D deficiency was observed in 40.58% of individuals with a mean log of

关键词： 25 Hydroxyvitamin D Serum Vitamin D Vitamin D Deficiency Prevalence Children Adolescents Adults

Effect of organic mineral supplementation in reducing oxidative stress in Holstein calves during short‑term heat stress and recovery conditions

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Journal of Animal Science and Biotechnology 2024年第2期15卷 812-825页

作者： A-Rang Son Seon-Ho Kim Mahfuzul Islam Michelle Miguel Ye Pyae Naing Sang-Suk Lee Ruminant Nutrition and Anaerobe Laboratory Department of Animal Science and TechnologySunchon National UniversitySuncheon 57922Korea Department of Microbiology and Parasitology Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh

Background This study investigated the effects of inorganic and organic minerals on physiological responses,oxidative stress reduction,and rumen microbiota in Holstein bull calves(123.81±9.76 kg;5 months old)during short-term heat stress(HS)and recovery *** Holstein calves were randomly assigned to four treatment groups:no mineral supplementation(Con),inorganic minerals(IM),organic minerals(OM),and high-concentration organic minerals(HOM)and two thermal environments(HS and recovery)using 4×2 factorial arrangement in a crossover design of four periods of 35 *** were maintained in a temperature-controlled *** experimental period consisted of 14 d of HS,14 d of recovery condititon,and a 7-d washing *** Body temperature and respiration rate were higher in HS than in the recovery conditions(P0.05).The principal coordinate analysis represented that the overall rumen microbiota was not influenced by mineral supplementation;however,temperature-induced microbial structure shifts were indicated(PERMANOVA:P<0.05).At the phylum level,Firmicutes and Actinobacteria decreased,whereas Fibrobacteres,Spirochaetes,and Tenericutes increased(P<0.05),under HS *** genus Treponema increased under HS conditions,while Christensenella was higher in recovery conditions(P<0.05).Conc

关键词： Antioxidant status Heat stress Holstein bull calves Organic mineral supplementation Oxidative stress

Nitric oxide alleviates cadmium-impeded growth by limiting ROS accumulation in pea seedlings

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BIOCELL 2022年第12期46卷 2583-2593页

作者： EKHLAQUE A.KHAN HAMDINO M.I.AHMED MEENA MISRA PALLAVI SHARMA AMARENDRA N.MISRA MIRZA HASANUZZAMAN Department of Life Sciences Central University of JharkhandRanchi835205India Department of Biotechnology Chaudhary Bansi Lal UniversityBhiwani127021India Horticulture research Institute(HRI) Agricultural Research Center(ARC)Giza12619Egypt School of Environment and Sustainable development Central University of GujratGandhinagar382030India School of Applied Sciences Centurion University of Technology and ManagementBhubaneswar752050India Department of Agronomy Faculty of AgricultureSher-e-Bangla Agricultural UniversityDhaka1207Bangladesh

Cadmium(Cd)causes oxidative stress,which leads to the oxidation of various biomolecules by the production of reactive oxygen species(ROS)to facilitate programmed cell death(PCD).The antioxidant defense system fails to detoxify ROS when it is produced in *** oxide(NO),a gaseous free radical and a phytohormone,regulates various physiological processes of ***,this work was undertaken to study the effects of the application of exogenous sodium nitroprusside(SNP,a NO donor)on growth parameters,oxidative stress,accumulation of secondary metabolites,and activities of antioxidant enzymes under Cd ***(50μM)and severe(200μM)Cd stress were applied to hydroponically grown pea(Pisum sativum L.)plants with or without 50μM *** Cd stress had a substantial impact on the *** effectiveness of NO in reducing Cd-induced negative effects on plant height,fresh weight,dry weight,protein content,nitrite content,nitrate reductase(NR)activity,catalase activity,and peroxidase activity were *** development,protein content,nitrite content,nitrate reductase(NR)activity,antioxidant defense systems disruption,overproduction of reactive oxygen species,and oxidative damage were *** antioxidant defense system(catalase and peroxidase activities)was activated by NO,which resulted in lower lipid peroxidation and lower hydrogen peroxide(H2O2)levels in Cd-exposed *** treatment boosted endogenous NO levels and NR activity in Cd-stressed plants while also enhanced proline levels to preserve osmotic *** presence of total phenols and flavonoids increased after SNP treatment,indicating that SNP enhanced stress recovery and boosted plant development in Cd-stressed plants.

关键词： Cadmium SNP Reactive oxygen species Oxidative stress Programmed cell death

Screening and evaluation of chilli(Capsicum annuum L.)genotypes for waterlogging tolerance at seedling stage

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BIOCELL 2022年第7期46卷 1613-1627页

作者： MDREZWAN MOLLA MDMOTIAR ROHMAN MDROBYUL ISLAM MIRZA HASANUZZAMAN LUTFUL HASSAN Plant Genetic Resources Centre(PGRC) Bangladesh Agricultural Research Institute(BARI)Gazipur1701Bangladesh Molecular Breeding Lab Plant Breeding DivisionBangladesh Agricultural Research Institute(BARI)Gazipur1701Bangladesh Department of Agronomy Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh2202Bangladesh

Waterlogging is an illustrious abiotic stress and the constrictions it enforces on plant roots have negative effects on growth and *** study was undertaken to investigate waterlogging stress tolerant potential in chilli(Capsicum annum L.)genotypes through evaluating morphological,physiological,biochemical and anatomical ***-five days old seedlings of 10 chilli genotypes were exposed to waterlogging stress maintaining water height 3–5 cm over the soil surface artificially for three *** duration(36–38 DAE)was termed as waterlogging period,and subsequent withdrawal of waterlogging condition(39–45 DAE)was regarded as a recovery *** on their survival performance,two tolerant genotypes viz.,SRC-517 and BARI morich-2 and two susceptible genotypes viz.,AHM-206 and RI-1(6)were selected for studying stress tolerance *** waterlogging,however,both genotypes(tolerant and susceptible)exhibited reduced root shoot length,dry weight ratio,petiole weight and leaf area,and noticeable reduction regarding these parameters was observed in susceptible ***,tolerant genotypes displayed a higher recovery than susceptible genotypes after removal of waterlogging *** reduction of leaf area and photosynthetic pigments as well as higher reduction of relative water content(RWC)were noticed in susceptible *** accumulation of proline and total antioxidant capacity(TAC)during waterlogging condition in tolerant genotypes suggested lower oxidative *** both genotypes lost total soluble sugar(TSS)relative to control at waterlogging stress,better performance was recorded in tolerant *** the period after the removal of extra water,a similar genotypic response in terms of TSS gain was ***,under flooding conditions,the development of aerenchyma cells in tolerant genotypes is a means of tolerance mechanism for long-term ***,the morpho-physiological and biochemical changes h

关键词： Abiotic stress Anoxia Flooding Hypoxia Pepper Photosynthetic pigments Proline

Exogenous Selenium Mitigates Salt Stress in Soybean by Improving Growth,Physiology,Glutathione Homeostasis and Antioxidant Defense

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 373-388页

作者： Hesham F.Alharby Mirza Hasanuzzaman Hassan S.Al-Zahrani Khalid Rehman Hakeem Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia Department of Agronomy Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh

The mechanism of selenium(Se)-induced salt tolerance was studied in moderately sensitive soybean(Glycine max L.)*** execute this view,soybean plants were imposed with salt stress(EC 6 dS m^(−1))applying *** other treatments,Se(0,25,50 and 75μM Na_(2)SeO_(4))was sprayed as co-application with that level of salt *** height,stem diameter,leaf area,SPAD value decreased noticeably under salt *** proline(Pro)level,together with decreased leaf relative water content(RWC)was observed in salt-affected *** stress resulted in brutal oxidative damage and increased the content of H_(2)O_(2),MDA level and electrolyte *** Se spray alleviated oxidative damage through boosting up the antioxidant defense system by increasing the activity of antioxidant enzymes such as catalase(CAT),peroxidase(POD)and glutathione reductase(GR),as well as by improving non-enzymatic antioxidants like glutathione(GSH)and GSH/glutathione disulfide(GSSG).The upregulated antioxidant defense system,restored Pro and leaf RWC,higher SPAD value conferred better growth and development in Se-sprayed salt-affected soybean plants which altogether put forth for the progressive yield contributing parameters and finally,seed *** different doses of Se,soybean plants sprayed with 50μM Na_(2)SeO_(4)showed better salt tolerance.

关键词： Trace elements selenium antioxidant system oxidative stress salinity oilseed crop

RNA-Seq analysis reveals the growth and photosynthetic responses of rapeseed(Brassica napus L.)under red and blue LEDs with supplemental yellow,green,or white light

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Horticulture research 2020年第1期7卷 296-308页

作者： Xiaoying Liu Zheng Chen Mohammad Shah Jahan Yixuan Wen Xuyang Yao Haifeng Ding Shirong Guo Zhigang Xu College of Agriculture Nanjing Agricultural University210095 NanjingChina College of Horticulture Nanjing Agricultural University210095 NanjingChina Department of Horticulture Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh College of Agriculture Shihezi University832003 ShiheziChina

Compound light is required for plant growth and development,but the response mechanisms of plants are undercharacterized and not fully *** present study was undertaken to evaluate the effect of supplemental light(green light,G;white light,W;yellow light,Y)added to red–blue light(RB)and sole W on the growth and photosynthesis of rapeseed *** results revealed that supplemental G/W improved the growth and photosynthesis of seedlings,but supplemental Y significantly reduced the photosynthetic rate and palisade tissue *** W caused similar responses in terms of growth,leaf development,oxidative damage,and antioxidant capability as supplemental *** total,449,367,813,and 751 differentially expressed genes(DEGs)were identified under supplemental G,Y,and W and sole W,respectively,compared to *** DEGs under different lights were closely associated with pathways such as light stimulus and high-light response,root growth,leaf development,photosynthesis,photosynthesis-antenna proteins,carbohydrate synthesis and degradation,secondary metabolism,plant hormones,and antioxidant capacity,which contributed to the distinct growth and photosynthesis under different *** results suggest that Y is more likely substituted by other wavelengths to achieve certain effects similar to those of supplemental Y,while G has a more distinctive effect on *** together,supplementation RB with G/W promotes the growth of rapeseed seedlings in a controlled environment.

关键词： substituted oxidative synthesis

Sustainable Land-Use Recommendations in Light of Agroforestry Systems in Response to the Changing Scenario of Land-Cover

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Advances in Remote Sensing 2022年第2期11卷 38-48页

作者： Tarulata Shapla Monica S. Myers Raja Sengupta Department of Agroforestry & Environmental Science Sher-e-Bangla Agricultural University Dhaka Bangladesh research and Projects Department ECO Canada Calgary Canada Department of Geography & McGill School of Environment McGill University Montréal Canada

Change detection of land-cover to recommend the future directions of land-use is indispensable for sustainable development and the proper utilization of land resources. In this research, unsupervised classification maps produced using images of Landsat 8 OLI from 2013 until 2021 (with a 4-year interval) reveal important land-cover changes, along with their drivers, in Kapasia, bangladesh. Overall, a substantial increase in paddy (24.7% to 27.2%) and urban (3.5% to 10.1%) and a decrease in homestead (67.5% to 59.3%) and forest (4.2% to 3.4%) were observed within the time interval. To direct the land-use towards long-term biodiversity and sustainability of the region, it is important to implement types of agroforestry systems as the observed decrease in homestead and forest areas are alarming. Agroforestry practices will not only have a positive environmental impact but can help diversify food systems, increase economic return and optimize natural resource use.

关键词： Agroforestry Systems Landsat 8 OLI Land-Use and Land-Cover (LULC)

Grain Yield and Nitrogen Use Efficiency Vary with Cereal Crop Type and Nitrogen Fertilizer Rate in Ethiopia: A Meta-Analysis

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Agricultural Sciences 2022年第4期13卷 612-631页

作者： Solomon Yokamo Xiaoqiang Jiao Kanomanyanga Jasper Fekadu Gurmu Mohammad Shah Jahan Rongfeng Jiang College of Resources and Environmental Sciences National Academy of Agriculture Green Development Key Laboratory of Plant-Soil Interactions Ministry of Education National Observation and Research Station of Agriculture Green Development (Quzhou Hebei) China Agricultural University Beijing China Southern Agricultural research Institute (SARI) Hawassa 06 Ethiopia Ethiopian Agricultural research Council Secretariat (EARCS) Addis Ababa Ethiopia Key Laboratory of Southern Vegetable Crop Genetic Improvement in Ministry of Agriculture College of Horticulture Nanjing Agricultural University Nanjing China Department of Horticulture Sher-e-Bangla Agricultural University Dhaka Bangladesh

The crop production in Ethiopia is markedly constrained by soil nutrient depletion and limited fertilizer input. Nitrogen is among the most yield-limiting factors of cereal crops, especially in sub-Saharan Africa (SSA). A meta-analysis of 82 studies was carried out to evaluate the response of major cereal crops, viz. wheat, maize, barley, teff, and sorghum, to nitrogen fertilization in Ethiopia. The results showed that N-application significantly increased yields of all the five crops examined herein. The average yields of the treatment effects over controls for the five crops were 3775.8 kg∙ha−1 and 2593.3 kg∙ha−1, respectively. The overall yield response to nitrogen treatments for all the crops was 64.8% (wheat, 96.5%;maize, 40.65%;barley 84.36%;teff, 50.48%;and sorghum;23%). Overall, nitrogen agronomic efficiency (AEN) and partial factor productivity (PFPN) were 18.2 and 71.81 kg∙kg−1, respectively. A downtrend of nitrogen use efficiency with an increase in N rate was realized. The yield response was higher for the nitrogen treatment effects of >100 kg∙N∙ha−1 (123.9%), clay soils (75.46%), low initial soil organic carbon (SOC) and available phosphorous (AP) (92.4% and 101.6%), respectively, Therefore, we recommend the application of nitrogen fertilizer (>100 kg∙N∙ha−1), especially on infertile soils for improved grain yield and NUE in aforementioned cereal crops in Ethiopia and similar regions in sub-Saharan Africa (SSA).

关键词： Cereal Crop Nitrogen Rate Nitrogen Use Efficiency Meta-Analysis Yield