Role of Bax Inhibitor-1 (LeBI-1) Gene in Tomato Treated with Various Abiotic and Oxidative Stresses

Mohammad Saiful Islam,Myeong-Hyeon Wang 한국원예학회 2009 Horticulture, Environment, and Biotechnology Vol.50 No.4

Phylogenetic analysis based on the deduced amino acid sequence of the Bax inhibitor-1 gene (LeBI-1) cDNA from tomato (Lycopersicon esculentum L.) revealed a high sequence similarity to Bax inhibitor-1 genes found in Capsicum annuum (91%), Nicotiana tabacum (87%), Brassica napus (75%), Arabidopsis thaliana (77%), and Zea mays (70%). There are multiple copies of the LeBI-1 gene throughout the tomato plant, with high levels of expression in the roots and flowers and low levels at the mature green stage and stem. Northern blotting analysis revealed that the expression of LeBI-1 was induced in response to wounding and cold but NaCl treated samples showed down-regulation. In addition, a gradual increase in expression was seen following treatment with abscisic acid and MV. An increase in expression was also seen for up to 12 h after exposure to H₂O₂, followed by a decrease after 24 h, after which a stable expression level was reached until 48 h. These results demonstrate that the LeBI-1 gene may play a role in tomato’s responses to abiotic stresses and be useful in improving of plant tolerance to abiotic stresses.

Multi-Objective Optimization of TMD for Frame Structure Based on Response Surface Methodology and Weighted Desirability Function

Mohammad Saiful Islam,Jeongyun Do,김두기 대한토목학회 2018 KSCE Journal of Civil Engineering Vol.22 No.8

Multi-objective optimization approach has been applied to find an optimum Tuned Mass Damper (TMD) to attenuate theearthquake induced vibrations of a ten-stored frame structure. In the optimization process, the Response Surface Methodology(RSM) with the experimental design of central Composite Design (CCD) and weighted desirability function (WDF) have beenutilized for getting an optimum TMD. The properties of TMD such as frequency ratio and damping ratio have been considered asdesign variables where the top floor root mean square displacement and frequency responses were considered as objective functions. The optimization has been executed under the El Centro earthquake loads. To evaluate the efficiency of RSM and WDF basedoptimum TMD, the structure has been analyzed with the Den Hartog’s, Sadek et al.’s and Warburton’s designed TMD respectivelyfor the El Centro, California and Northridge earthquakes load. The evaluated results have been found more satisfactory with the RSMand WDF based optimum TMD than with the others TMD.

Expression Patterns of an Abiotic Stress-inducible Dehydrin Gene, LeDhnT14, in Tomato

Mohammad Saiful Islam,Myeong-Hyeon Wang 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.6

A full length cDNA encoding Lycopersicum esculentum dehydrin Tas14 (designated as LeDhnT14) was isolated and investigated for the expression pattern of dehydrin Tas14 gene in tomato plant under different abiotic stresses. Phylogenetic analysis based on the deduced amino acid sequence of the dehydrin Tas14 gene (LeDhnT14) cDNA from tomato revealed a high sequence similarity to other dehydrin genes. Southern blot showed that LeDhnT14 is a multiple copy gene in the tomato genome. The organ specific expression profiling indicated that LeDhnT14 was expressed in mature leaves, stem, and flowers, but with no detectable expression in root. Northern blot analysis revealed that various environmental stresses such as salt, drought, coldness, MV, ABA, and H2O2 induced significant expression of LeDhnT14. These results indicated that the LeDhnT14 plays an important role in tomato responses to abiotic stresses and may be useful in improving of plant tolerance to abiotic stresses.

Genotype-Environment Interaction and Stability Analysis for Yield and Yield Contributing Characters in Soybean(Glycine max L.)

Islam, Mohammad Saiful,Newaz, Muhammad Ali,Islam, Md. Jahidul,Heo, Seong-Il,Wang, Myeong-Hyeon The Plant Resources Society of Korea 2007 한국자원식물학회지 Vol.20 No.6

GE interaction is the expression of differential genotypic adaptation across environments. GE interactions through different stability parameters and performance of the traits of genotypes were studied. The traits were days to maturity, pod length, number of pods/ plant, 100-seed weight and seed yield/plant in ten soybean genotypes across five environments. Significant differences were observed for genotypes, environments and GE interactions. Stability analysis after Eberhart and Russell's model suggested that the genotypes used in this study were all more or less responsive to environmental changes. Most of the genotypes perform better in Env.3. Based on phenotypic indices(Pi), regression ($S^2di$) genotype Garurab was found fairly stable for days to maturity. BS-23 and G-2120 may be considered as stable genotype for pod length. All the genotypes except G-2120 showed that the genotypes were relatively unstable under environmental fluctuation for the number of pod/plant. Genotype BS-23 was found most stable among all the genotypes for 100-seed weight. BS-3 and Gaurab was the most stable and desirable genotypes for seed yield in soybean.

The Causes of Deforestation and Loss of Genetic Resources in Bangladesh

Mohammad Saiful Islam,Mohammad Jahidul Islam,Sheikh Ali Ahmed,Su Kyoung Chun,Song-Ho Chong,Jong In Kim 한국가구학회 2007 한국가구학회지 Vol.18 No.4

Almost all the people, particularly the rural people are directly dependent on the continued productivity of natural resources, like water, soils, forests and fisheries. But the overuse by the extremely high population pressures has degraded the natural resources into severe widespread deforestation. The degradation of natural resources, particularly the plant resources has been a great concern for socio-economic and sustainable development of the country. The Forests in Bangladesh have been depleted and degraded in volume, area, and quantity, thus requiring urgent forest protection by identifying the causes of forest loss. There are so many causes of deforestation and loss of genetic resources such as; the timber industry, which, legal or not, are cutting too many trees; indigenous forest dwellers, having their own types of problems; migrants, who, because of problems in their places of origin, have decided to move to the forests and the government through its Forest Department which is not able or willing to implement suitable policies to regulate the cutting trees and to prevent illegal cutting. Because it is a time consuming task to mitigate the first and second sets of factors, we recommend involving forest dwellers in forestry practices as much as possible and taking necessary steps to alleviate the third and fourth sets and thereby reduce the rate of forest depletion. Accordingly, a number of strategies that should be adopted to halt the loss of remaining forest cover are discussed.

대각 가새 시스템 구조물의 지진응답평가

모하메드사이플이슬람 ( Mohammad Saiful Islam ),모하매드사비르라만 ( Mohammad Sabbir Rahman ),장성규 ( Chang Seongkyu ),김두기 ( Kim Dookie ) 한국구조물진단유지관리공학회 2016 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.20 No.1

Effects of histamine and antihistamine on the hard tick Haemaphysalis longicornis during blood sucking

Islam Mohammad Saiful,Talha Abul Fatah Shah Muhammad,유명조 대한기생충학ㆍ열대의학회 2023 The Korean Journal of Parasitology Vol.61 No.2

At the time of host attachment, ticks are very sensitive to histamine, but during rapid blood sucking they paradoxically require histamine. Using a rabbit model, we studied the effects of histamine and antihistamine during attachment and fast-feeding in different life stages of Haemaphysalis longicorns. We examined how they responded to histamine and antihistamine by analyzing the detachment rate, histology of feeding lesions, and post-feeding behavior. A significant difference (P<0.01) was found in the detachment rate between experimental and control treatments throughout the observation period. Ticks exhibited a higher detachment rate (30.1%) at 12 h after histamine application during attachment time and on antihistamine-treated skin (25.4%) at 96 h during fast-feeding. After feeding on histamine-treated rabbits, the fully engorged body weights of larvae and nymphs were 0.7±0.36 mg and 3.5±0.65 mg, respectively. An average increase in body weight of 0.6±0.05 mg and 3.2±0.30 mg was observed for larvae and nymphs compared to the respective control weights. Nymphs and adults engorged after antihistamine treatment had an average body weight of 1.3±0.54 mg and 54±0.81 mg, respectively. An average decrease in body weight was observed in antihistamine-treated H. longicornis compared with control nymphs (3.3±0.42 mg) and adults (174±1.78 mg). Skin biopsies were collected after treatment, and differential histopathological characteristics were found between the treatment and control groups. Tick-infested skin collected from rabbits in the antihistamine-treated group lacked erythrocytes in the feeding pool, indicating that antihistamine impaired tick fast-feeding stage.

The Causes of Deforestation and Loss of Genetic Resources in Bangladesh

Islam, Mohammad Saiful,Islam, Mohammad Jahidul,Ahmed, Sheikh Ali,Chun, Su-Kyoung,Chong, Song-Ho,Kim, Jong-In Korea Furniture Society 2007 한국가구학회지 Vol.18 No.4

Almost all the people, particularly the rural people are directly dependent on the continued productivity of natural resources, like water, soils, forests and fisheries. But the overuse by the extremely high population pressures has degraded the natural resources into severe widespread deforestation. The degradation of natural resources, particularly the plant resources has been a great concern for socio-economic and sustainable development of the country. The Forests in Bangladesh have been depleted and degraded in volume, area, and quantity, thus requiring urgent forest protection by identifying the causes of forest loss. There are so many causes of deforestation and loss of genetic resources such as; the timber industry, which, legal or not, are cutting too many trees; indigenous forest dwellers, having their own types of problems; migrants, who, because of problems in their places of origin, have decided to move to the forests and the government through its Forest Department which is not able or willing to implement suitable policies to regulate the cutting trees and to prevent illegal cutting. Because it is a time consuming task to mitigate the first and second sets of factors, we recommend involving forest dwellers in forestry practices as much as possible and taking necessary steps to alleviate the third and fourth sets and thereby reduce the rate of forest depletion. Accordingly, a number of strategies that should be adopted to halt the loss of remaining forest cover are discussed.

Proteomic profile of Haemaphysalis longicornis saliva

Mohammad Saiful Islam,ItabajaraDaSilvaVazJr,ItabajaraDaSilvaVazJr,Myung-Jo You 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.10

During tick infestation, the tick secretes bioactive substances that modify the host’s physiological and immunological reactions. The study of tick saliva is important to understand tick biology as tick saliva plays a special physiological role in pathogen transmission. The average salivary protein concentration was found to be 0.169 μg/μl/tick and saliva secretion decreased with increased time of tick detachment from the host. Saliva secretion volume increased to 3.56 μl in the group of ticks with a body weight between 301–350 mg as compared to higher and lower body weight groups. On-chip-electrophoresis results show 13 distinct bands ranging from 9.9 to 294 kDa. For salivary protein LC-MS/MS was performed. A total of 135 tick salivary proteins were identified of which 30 proteins were found exclusively in fully engorged nymph saliva, 74 in fully engorged adult females, and 31 were detected in both stages. Results of this may help researchers to identify tick proteins as potential candidates for further studies aimed to develop novel tick control strategies to affect both the ticks and the pathogens transmitted by them.

Expression of dehydration responsive element-binding protein-3 (DREB3) under different abiotic stresses in tomato

( Mohammad Saiful Islam ),( Myeong Hyeon Wang ) 생화학분자생물학회 2009 BMB Reports Vol.42 No.9