Sher-e-Bangla Agricultural University
Dhaka, Bangladesh

Sher-e-Bangla Agricultural University or SAU is the oldest agricultural institution in Bangladesh and South Asia, situated in Sher-e-Bangla Nagar, Dhaka. It was established on December 11, 1938 as Bengal Agricultural Institute and later upgraded to university in 2001 renaming Sher-e-Bangla Agricultural University.Since its establishment, this university is playing a role in agricultural research and development of the region through creation of knowledge, agricultural technology generation and transfer, crop diversification and intensification for the benefit of farming communities. SAU offers undergraduate and post graduate degrees through course credit system and also Ph.D. courses. Wikipedia.

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Gill S.S.,MD University | Hasanuzzaman M.,Sher-e-Bangla Agricultural University | Nahar K.,Kagawa University | Macovei A.,International Center for Genetic Engineering and Biotechnology | Tuteja N.,International Center for Genetic Engineering and Biotechnology
Plant Physiology and Biochemistry | Year: 2013

Cadmium (Cd2+) is a widespread heavy metal pollutant in the environment with a long biological half-life, originating mainly from industrial processes and phosphate fertilizers. It is easily taken up by plants, resulting in toxicity symptoms, such as chlorosis, wilting, growth reduction, and cell death. This cellular toxicity might result from interactions with vital metabolic pathways, carboxyl or thiol groups of proteins and reactive oxygen species (ROS) burst in plants. Plant exposure even to low concentrations of Cd may lead to cell death but the mechanism of its toxicity is still debatable. Therefore, exploring various ways to improve crop productivity and/or alleviate Cd stress effects is one of the major areas of concern. Nitric oxide (NO) is a hydrophobic gaseous molecule involved in various physiological processes such as germination, root growth, stomatal closure, control of the flowering timing etc. NO also functions as cell signaling molecule in plants and play important roles in the regulation of plant responses to both abiotic and biotic stress conditions. At the molecular level, NO signaling includes protein modification by binding to critical cysteine residues, heme or iron-sulfur centers and tyrosine residue nitration via peroxynitrite formation (ONOO-), mobilization of secondary messengers (Ca2+, cyclic GMP and cyclic ADP-Rib) and modulation of protein kinase activities. Significant research had been done to understand the NO biosynthesis and signaling in plants under stress, but several questions still need to be answered. The present review is focused specifically on the importance of NO as Cd stress modulator in crop plants. © 2012 Elsevier Masson SAS.

Hasanuzzaman M.,Kagawa University | Hasanuzzaman M.,Sher-e-Bangla Agricultural University | Fujita M.,Kagawa University
Biological Trace Element Research | Year: 2011

In order to observe the possible regulatory role of selenium (Se) in relation to the changes in ascorbate (AsA) glutathione (GSH) levels and to the activities of antioxidant and glyoxalase pathway enzymes, rapeseed (Brassica napus) seedlings were grown in Petri dishes. A set of 10-day-old seedlings was pretreated with 25 μM Se (Sodium selenate) for 48 h. Two levels of drought stress (10% and 20% PEG) were imposed separately as well as on Se-pretreated seedlings, which were grown for another 48 h. Drought stress, at any level, caused a significant increase in GSH and glutathione disulfide (GSSG) content; however, the AsA content increased only under mild stress. The activity of ascorbate peroxidase (APX) was not affected by drought stress. The monodehydroascorbate reductase (MDHAR) and glutathione reductase (GR) activity increased only under mild stress (10% PEG). The activity of dehydroascorbate reductase (DHAR), glutathione S-transferase (GST), glutathione peroxidase (GPX), and glyoxalase I (Gly I) activity significantly increased under any level of drought stress, while catalase (CAT) and glyoxalase II (Gly II) activity decreased. A sharp increase in hydrogen peroxide (H 2O 2) and lipid peroxidation (MDA content) was induced by drought stress. On the other hand, Se-pretreated seedlings exposed to drought stress showed a rise in AsA and GSH content, maintained a high GSH/GSSG ratio, and evidenced increased activities of APX, DHAR, MDHAR, GR, GST, GPX, CAT, Gly I, and Gly II as compared with the drought-stressed plants without Se. These seedlings showed a concomitant decrease in GSSG content, H 2O 2, and the level of lipid peroxidation. The results indicate that the exogenous application of Se increased the tolerance of the plants to drought-induced oxidative damage by enhancing their antioxidant defense and methylglyoxal detoxification systems. © 2011 Springer Science+Business Media, LLC.

Hasanuzzaman M.,Kagawa University | Hasanuzzaman M.,Sher-e-Bangla Agricultural University | Fujita M.,Kagawa University
Ecotoxicology | Year: 2013

The present study investigates the possible regulatory role of exogenous nitric oxide (NO) in mitigating oxidative stress in wheat seedlings exposed to arsenic (As). Seedlings were treated with NO donor (0.25 mM sodium nitroprusside, SNP) and As (0.25 and 0.5 mM Na2HAsO 4·7H2O) separately and/or in combination and grown for 72 h. Relative water content (RWC) and chlorophyll (chl) content were decreased by As treatment but proline (Pro) content was increased. The ascorbate (AsA) content was decreased significantly with increased As concentration. The imposition of As caused marked increase in the MDA and H2O 2 content. The amount of reduced glutathione (GSH) and glutathione disulfide (GSSG) significantly increased with an increase in the level of As (both 0.25 and 0.5 mM), while the GSH/GSSG ratio decreased at higher concentration (0.5 mM). The ascorbate peroxidase and glutathione S-transferase activities consistently increased with an increase in the As concentration, while glutathione reductase (GR) activities increased only at 0.25 mM. The monodehydroascorbate reductase (MDHAR) and catalase (CAT) activities were not changed upon exposure to As. The activities of dehydroascorbate reductase (DHAR) and glyoxalase I (Gly I) decreased at any levels of As, while glutathione peroxidase (GPX) and glyoxalase II (Gly II) activities decreased only upon 0.5 mM As. Exogenous NO alone had little influence on the non-enzymatic and enzymatic components compared to the control seedlings. These inhibitory effects of As were markedly recovered by supplementation with SNP; that is, the treatment with SNP increased the RWC, chl and Pro contents; AsA and GSH contents and the GSH/GSSG ratio as well as the activities of MDHAR, DHAR, GR, GPX, CAT, Gly I and Gly II in the seedlings subjected to As stress. These results suggest that the exogenous application of NO rendered the plants more tolerant to As-induced oxidative damage by enhancing their antioxidant defense and glyoxalase system. © 2013 Springer Science+Business Media New York.

Baque M.A.,Chungbuk National University | Baque M.A.,Sher-e-Bangla Agricultural University | Moh S.-H.,BIO FD and C Co. | Lee E.-J.,Chungbuk National University | And 2 more authors.
Biotechnology Advances | Year: 2012

The increasing global demand for biomass of medicinal plant resources reflects the issues and crisis created by diminishing renewable resources and increasing consumer populations. Moreover, diverse usage of plants and reduced land for cultivation in the world accelerated the deficiency of plant resources. In addition, the preparation of safety of plant based medicine whips up demand for biomass of valuable medicinal plants. As one of alternative approach to upswing the productivity of plant-based pharmaceutical compounds, automation of adventitious root culture system in air-lift bioreactor was adopted to produce cosmic amount of root biomass along with enriched diverse bioactive molecules. In this review, various physiological, engineering parameters, and selection of proper cultivation strategy (fed-batch, two-stage etc.) affecting the biomass production and secondary metabolite accumulation have been discussed. In addition, advances in adventitious root cultures including factors for process scale-up as well as recent research aimed at maximizing automation of the bioreactor production processes are also highlighted. Examples of the scale-up of cultures of adventitious roots of Morinda citrifolia, Echinacea purpurea and angustifolia, Hypericum perforatum and Panax ginseng by applying 20. L to 10, 000. L bioreactors in our lab were demonstrated with a view of commercial application. © 2012 Elsevier Inc.

Rahim M.A.,University of Padua | Rahim M.A.,Sher-e-Bangla Agricultural University | Busatto N.,University of Padua | Busatto N.,University of Bologna | Trainotti L.,University of Padua
Planta | Year: 2014

Main Conclusion: MYB10.1 and MYB10.3, with bHLH3, are the likely regulators of anthocyanin biosynthesis in peach fruit.MYB10.1/2/3forms a cluster on the same genomic fragment where theAnther color(Ag) trait is located.Anthocyanins are bioactive compounds responsible for the pigmentation of many plant parts such as leaves, flowers, fruits and roots, and have potential benefits to human health. In peach [Prunus persica (L.) Batsch], peel color is a key determinant for fruit quality and is regulated by flavonoids including anthocyanins. The R2R3 MYB transcription factors (TFs) control the expression of anthocyanin biosynthetic genes with the help of co-activators belonging to the basic-helix-loop-helix (bHLH) and WD40 repeat families. In the peach genome six MYB10-like and three bHLH-like TFs were identified as candidates to be the regulators of the anthocyanin accumulation, which, in yellow flesh fruits, is highest in the peel, abundant in the part of the mesocarp surrounding the stone and lowest in the mesocarp. The expression of MYB10.1 and MYB10.3 correlates with anthocyanin levels of different peach parts. They also have positive correlation with the expression of key structural genes of the anthocyanin pathway, such as CHS, F3H, and UFGT. Functions of peach MYB10s were tested in tobacco and shown to activate key genes in the anthocyanin pathway when bHLHs were co-expressed as partners. Overexpression of MYB10.1/bHLH3 and MYB10.3/bHLH3 activated anthocyanin production by up-regulating NtCHS, NtDFR and NtUFGT while other combinations were not, or much less, effective. As three MYB10 genes are localized in a genomic region where the Ag trait, responsible for anther pigmentation, is localized, it is proposed they are key determinant to introduce new peach cultivars with higher antioxidant level and pigmented fruit. © 2014, Springer-Verlag Berlin Heidelberg.

Rahman S.,University of Plymouth | Kazal M.M.H.,Sher-e-Bangla Agricultural University
Renewable and Sustainable Energy Reviews | Year: 2015

This study examines whether crop diversification provides economy in energy use and improves technical energy efficiency using a large survey data of 2075 farms from 20 sub-districts of 17 districts in Bangladesh by applying a stochastic input-distance function approach. The results reveal that cereal production significantly increases energy use by 0.14% for every one percent increase' in output. Renewable source of energy constitutes 59.6% of total inputs and labour energy alone constitutes 39%. Significant output complementarity exists between cereal and oilseed enterprises but competition exist between jute with pulse and/or oilseed enterprises. The mean technical energy efficiency is estimated at 68% implying that energy output can be increased by 32% by eliminating inefficiency. Diversification amongst enterprises is associated with energy inefficiency, implying that specialization into cereals improves efficiency. Large farms are inefficient whereas large family size improves efficiency. The key policy implication is that diversification of crop enterprises must maintain cereal (i.e., rice/wheat/maize) as the main base and then add non-cereal crops (e.g., oilseeds) in order to improve energy economy. Also, diversification within cereals from rice monoculture to wheat and/or maize will significantly improve technical energy efficiency. © 2015 Elsevier Ltd. All rights reserved.

Roy R.,Sher-e-Bangla Agricultural University | Chan N.W.,Universiti Sains Malaysia
Environmentalist | Year: 2012

The term 'indicator' is often vague and heterogeneous, and its dynamic characteristics make it highly variable over time and space. Based on reviews and synthesis, this study visualizes phenomena and highlights the trend of indicator selection criteria, development methods, validation evaluation strategies for improvement. In contextualization of the intensification of agriculture and climate change, we proposed a set of indicators for assessing agricultural sustainability in Bangladesh based on theoretically proposed and practically applied indicators by researchers. Also, this article raises several issues of indicator system development and presents a summary after due consideration. Finally, we underline multi-stakeholders' participation in agricultural sustainability assessment. © 2011 Springer Science+Business Media, LLC.

Hoque M.E.,Sher-e-Bangla Agricultural University
Plant OMICS | Year: 2010

In vitro microtuber formation potentiality of potato was investigated to establish a rapid disease free seed production system in potato. MS medium supplemented with 4 mg/L of KIN showed best performance in respect of multiple shoot regeneration and microtuber formation. Simple MS medium was not able to produce any micro tuber under in vitro condition. Dark condition better responded to tuberization than light condition. Among the three different explants (nodal segment, sprout and shoot apex) nodal cutting showed the best performance on days to microtuber formation and average weight of microtuber. MS + 6% sucrose + 4 mg/L KIN combination of treatment was best for in vitro tuberization among the parameters under study.

Mazumder M.S.U.,Sher-e-Bangla Agricultural University
Sustainable Development | Year: 2015

Here, the effects of length of microfinance borrowing, service provider and other factors on microfinance participation and outcomes in Bangladesh are investigated. Data were collected from 300 microfinance respondents using face-to-face semi-structured interviews. Descriptive and econometric statistics were used for data analysis. The financing authorities gave preference to rural, powerless, illiterate and poor people in all groups of candidates. Spillover effects were minimized by considering endogeneity, attrition bias and unobserved bias. The fixed effect instrumental variable method was used to show that the microfinance effects changed over time, i.e. were greater in historical borrowing than in more recent borrowing. Farm size, repayment behavior, savings amount per week and annual household income were identified as significant factors that influenced recipients' effective participation in the microfinance program. © 2015 John Wiley & Sons, Ltd and ERP Environment.

Ali M.S.,Sher-e-Bangla Agricultural University | Hossain M.M.,Sher-e-Bangla Agricultural University
World's Poultry Science Journal | Year: 2010

The study was conducted to determine the selected commercial practises of broiler-producing farmers in Bangladesh, broiler production performance, the relationship between management practices and broiler performance and the problems faced by farmers involved with broiler production. Two hundred and fifty broiler-producing farmers in Modhukhali upazilla constituted the population of the study. One hundred and twenty broiler farmers were randomly selected from this population as the sample. Data were collected under the supervision of researchers with the help of a monitoring schedule and pre-tested interview schedule from December 2007 to June 2008. The majority (78%) of farmers reported low to medium performance in broiler production, and only 22% reported high performance. Education, land possession, annual family income, training exposure, broiler farming experience, broiler farm size, capital in broiler farming and extension contact for farmers all had a significant bearing on performance, while credit needs, problem faced in broiler farming and feed conversion ratio had significant negative relationship with productive performance. On the basis of the Problem Faced Index, the high price of broiler feeds ranked first, followed by the cost of chicks, high mortality, low quality feed, cold temperatures (12-15°C) in winter, cost of medication and high rainfall in the rainy season. © 2010 World's Poultry Science Association.

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