Regulation of cuticular wax biosynthesis in plants under abiotic stress

Md Shaheenuzzamn,Shandang Shi,Kamran Sohail,Hongqi Wu,Tianxiang Liu,Peipei An,Zhonghua Wang,Mirza Hasanuzzaman 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.1

Cuticular waxes are the covering of the outer layer of the plant, consist of hydrocarbon appears like whitish flm or bloom in plant organs. They play a vital role like a safeguard from diferent stress condition in the plant. Since environmental factors are active regulators of cuticular wax biosynthesis, composition, quantity, and deposition, it is evident that cuticular wax is associated with plant stress responses. The diversity of cuticular wax compositions is a proof of the wealth of genes associated in plant wax production. Moreover, a number of wax genes were distinguished in plant/crops at abiotic stress conditions but, regulation of control of those wax genes has not been studied very well in major crop plants at abiotic conditions. A very few transcriptions factors were identifed to regulate the expression level of wax genes of cuticular wax biosynthesis at abiotic stress condition. However, further study is needed to identify more candidate transcriptional regulation factors to cuticular wax production in diferent crop plants in diverse abiotic environments. Therefore, regulation of cuticular wax production under diverse abiotic stresses and the role of transcription factors into the plant cuticular wax accumulation will be helpful to engineer crop plants and improve transgenic crops for stress tolerance. In this review, we focused on a new perspective on transcriptional factors to regulate functional genes of cuticular wax biosynthesis in plants at abiotic stresses.

Relation to Demographic Factors

Md,Abu Issa GAZI,Hasanuzzaman TUSHAR,Razuan Ahmed SHUVRO,Sajun SAHA,Md,Atikur RAHAMAN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6

The primary objective of this study is to observe the impact of demographic factors on the job satisfaction of workers of the sugar industry in Bangladesh. Current research determines whether the age, level of education, marital status, and years of experience play a role in the job satisfaction of respondents and whether job satisfaction level differs among respondents in terms of age, level of education, marital status, and years of experience. A total of 300 respondents who are permanent production workers have been selected from state-owned sugar mills in Bangladesh on a random basis. A pre-structured questionnaire and for the information required face-to-face interview was conducted by the researcher. In analyzing data different statistical tools like Chi-square tests, ANOVA, Correlation were applied and data processed by using SPSS. The results of the present study revealed that a higher percentage of the high age workers was more satisfied with their present job than that of low age but statistically not significant. Other factors such as education, experience, and marital status, do not affect overall work satisfaction. The findings of this study suggest that the government and the concerned authority should draft proper policies and special programs to improve the level of satisfaction of sugar industrial workers.

Nutrient Leaching from Leaf Litter of Cropland Agroforest Tree Species of Bangladesh

Md. Hasanuzzaman,Mahmood Hossain 강원대학교 산림과학연구소 2014 Journal of Forest Science Vol.30 No.2

Leaf litter is the main and quick source of organic matter and nutrient to the soil compared to other parts of litter. This study focused on the nutrients (N, P and K) leaching from leaf litter of Melia azadirachta, Azadirachta indica, Eucalyptus camaldulensis, Swietenia macrophylla, Mangifera indica, Zizyphus jujuba, Litchi chinensis, Albizia saman, Artocarpus heterophyllus, Acacia auriculiformis, Dalbergia sissoo and Khaya anthotheca as the common cropland agroforest tree species of Bangladesh. About (9 to 35) % of initial mass was lost, while Electric Conductivity (EC) and TDS (Total Dissolved Solid) of leaching water increased to (573 to 3,247) μS/cm and (401 to 2,307) mg/l respectively after 192 hours of leaching process. Mass loss (%) of leaf litter, EC and TDS of leaching water showed significant (ANOVA, p<0.05) curvilinear relationship with leaching time. Initial concentration of NH4, PO4 and K in leaching water was found to increase significantly (p<0.05) up to 48/72 hours and then remained almost constant at later stages (48/72 to 192 hours). Mass loss of leaves; EC, TDS, NH4, PO4 and K in leaching water was varied also significantly (ANOVA, p<0.05) among the studied tree species. All the tree species showed similar pattern of nutrients (K>N>P) release during the leaching process. The highest NH4 (4,097 ppm) and potassium (8,904 ppm) concentration was found for M. azadirachta while the highest PO4 (1,331 ppm) concentration was found for E. camaldulensis in the leaching water. Among the studied tree species, M. azadirachta, A. indica, D. sissoo, E. camaldulensis and Z. jujuba was selected as the best tree species with respect to nutrient leaching.

Nutrient Leaching from Leaf Litter of Cropland Agroforest Tree Species of Bangladesh

Hasanuzzaman, Md.,Hossain, Mahmood Institute of Forest Science 2014 Journal of Forest Science Vol.30 No.2

Leaf litter is the main and quick source of organic matter and nutrient to the soil compared to other parts of litter. This study focused on the nutrients (N, P and K) leaching from leaf litter of Melia azadirachta, Azadirachta indica, Eucalyptus camaldulensis, Swietenia macrophylla, Mangifera indica, Zizyphus jujuba, Litchi chinensis, Albizia saman, Artocarpus heterophyllus, Acacia auriculiformis, Dalbergia sissoo and Khaya anthotheca as the common cropland agroforest tree species of Bangladesh. About (9 to 35) % of initial mass was lost, while Electric Conductivity (EC) and TDS (Total Dissolved Solid) of leaching water increased to (573 to 3,247) ${\mu}S/cm$ and (401 to 2,307) mg/l respectively after 192 hours of leaching process. Mass loss (%) of leaf litter, EC and TDS of leaching water showed significant (ANOVA, p<0.05) curvilinear relationship with leaching time. Initial concentration of NH4, PO4 and K in leaching water was found to increase significantly (p<0.05) up to 48/72 hours and then remained almost constant at later stages (48/72 to 192 hours). Mass loss of leaves; EC, TDS, $NH_4$, $PO_4$ and K in leaching water was varied also significantly (ANOVA, p<0.05) among the studied tree species. All the tree species showed similar pattern of nutrients (K>N>P) release during the leaching process. The highest $NH_4$ (4,097 ppm) and potassium (8,904 ppm) concentration was found for M. azadirachta while the highest $PO_4$ (1,331 ppm) concentration was found for E. camaldulensis in the leaching water. Among the studied tree species, M. azadirachta, A. indica, D. sissoo, E. camaldulensis and Z. jujuba was selected as the best tree species with respect to nutrient leaching.

Morphology, Morphometry, Growth Performance and Carcass Characteristics of Pekin, Nageswari and Their F₁ Crossbred Ducks under Intensive Management

Md. Tanvir Ahmad,Drishti Nandita,Tanvir Mohammad Maruf,Mohammad Hasanuzzaman Pabitra,Sabrina Islam Mony,Md. Shawkat Ali,Md. Sarwar Ahmed,Mohammad Shamsul Alam Bhuiyan 한국가금학회 2021 韓國家禽學會誌 Vol.48 No.2

This study investigated the morphological features, growth, and meat yield performance of Pekin (P), Nageswari (N), and their reciprocal F1 crossbreds (P♂×N♀ and N♂×P♀). A total of 301-day-old ducklings were reared in four different pens up to 20 weeks of age under intensive management conditions. Feeding and management practices were similar for all individuals throughout the experimental period. The morphology and plumage pattern of F1 crossbreds were similar to those of indigenous Nageswari ducks because of the dominant inheritance of the extended Black allele (E locus). Genotype had significant differences (P<0.05) among the four genotypes in morphometric measurements, except wing and shank length. Growth performance was highly significant among the four genotypes (P<0.001) from one-day to 12 weeks of age. The average live weights of P, N, P♂×N♀ and N♂×P♀ crossbred genotypes at 12 weeks of age were 2038.35±29.74, 1542.44±33.61, 1851.85±28.59 and 1691.08±27.80 g, respectively. Meat yield parameters varied significantly (P<0.05) among the different genotypes for all studied traits, except for liver and gizzard weight. Moreover, no significant differences (P>0.05) were observed between P and P♂×N♀ crossbred for important meat yield traits such as hot carcass weight, dressing%, back half weight, drumstick with thigh weight and breast meat weight. Remarkably, the P♂×N♀ crossbreed possesses 50% native inheritance, which contributes to better adaptation in a hot-humid environment. Our results revealed that the P♂×N♀ genotype could be suitable for higher meat production with better adaptability in the agro-climatic conditions of Bangladesh.

Antibiotic Resistance of Helicobacter pylori : Mechanisms and Clinical Implications

Hasanuzzaman Md,Bang Chang Seok,Gong Eun Jeong 대한의학회 2024 Journal of Korean medical science Vol.39 No.4

Helicobacter pylori is a pathogenic bacterium associated with various gastrointestinal diseases, including chronic gastritis, peptic ulcers, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. The increasing rates of H. pylori antibiotic resistance and the emergence of multidrug-resistant strains pose significant challenges to its treatment. This comprehensive review explores the mechanisms underlying the resistance of H. pylori to commonly used antibiotics and the clinical implications of antibiotic resistance. Additionally, potential strategies for overcoming antibiotic resistance are discussed. These approaches aim to improve the treatment outcomes of H. pylori infections while minimizing the development of antibiotic resistance. The continuous evolution of treatment perspectives and ongoing research in this field are crucial for effectively combating this challenging infection.

Exogenous jasmonic acid modulates the physiology, antioxidant defense and glyoxalase systems in imparting drought stress tolerance in different Brassica species

Md. Mahabub Alam,Masayuki Fujita,Kamrun Nahar,Mirza Hasanuzzaman 한국식물생명공학회 2014 Plant biotechnology reports Vol.8 No.3

This study examined the ability of jasmonicacid (JA) to enhance drought tolerance in different Brassicaspecies in terms of physiological parameters, antioxidantsdefense, and glyoxalase system. Ten-day-oldseedlings were exposed to drought (15 % polyethyleneglycol, PEG-6000) either alone or in combination with0.5 mM JA. Drought significantly increased lipoxygenaseactivity and oxidative stress, levels of malondialdehyde andH2O2. Drought reduced seedling biomass, chlorophyll (chl)content, and leaf relative water content (RWC). Droughtincreased proline, oxidized ascorbate (DHA) and glutathionedisulfide (GSSG) levels. Drought affected differentspecies differently: in B. napus, catalase (CAT) and glyoxalaseII (Gly II) activities were decreased, while glutathione-S-transferase (GST) and glutathione peroxidase(GPX) activities were increased in drought-stressed comparedto unstressed plants; in B. campestris, activities ofglutathione reductase (GR), glyoxalase I (Gly I), GST, andGPX were increased, monodehydroascorbate reductase(MDHAR), dehydroascorbate reductase (DHAR), CAT andother enzymes were decreased; in B. juncea, activities ofascorbate peroxidase, GR, GPX, Gly I were increased; GlyII activity was decreased and other enzymes did notchange. Spraying drought-stressed seedlings with JAincreased GR and Gly I activities in B. napus; increasedMDHAR activity in B. campestris; and increased DHAR,GR, GPX, Gly I and Gly II activities in B. juncea. JAimproved fresh weight, chl, RWC in all species, dry weightincreased only in B. juncea. Brassica juncea had the lowestoxidative stress under drought, indicating its naturaldrought tolerance capacity. The JA improved drought toleranceof B. juncea to the highest level among studiedspecies.

Casein Kinase 2 (CK2)-mediated Phosphorylation of Hsp90β as a Novel Mechanism of Rifampin-induced <i>MDR1</i> Expression

Kim, So Won,Hasanuzzaman, Md.,Cho, Munju,Heo, Ye Rang,Ryu, Min-Jung,Ha, Na-Young,Park, Hyun June,Park, Hyung-Yeon,Shin, Jae-Gook American Society for Biochemistry and Molecular Bi 2015 The Journal of biological chemistry Vol.290 No.27

<P>The P-glycoprotein (P-gp) encoded by the MDR1 gene is a drug-exporting transporter located in the cellular membrane. P-gp induction is regarded as one of the main mechanisms underlying drug-induced resistance. Although there is great interest in the regulation of P-gp expression, little is known about its underlying regulatory mechanisms. In this study, we demonstrate that casein kinase 2 (CK2)-mediated phosphorylation of heat shock protein 90 beta (Hsp90 beta) and subsequent stabilization of PXR is a key mechanism in the regulation of MDR1 expression. Furthermore, we show that CK2 is directly activated by rifampin. Upon exposure to rifampin, CK2 catalyzes the phosphorylation of Hsp90 beta at the Ser-225/254 residues. Phosphorylated Hsp90 beta then interacts with PXR, causing a subsequent increase in its stability, leading to the induction of P-gp expression. In addition, inhibition of CK2 and Hsp90 beta enhances the down-regulation of PXR and P-gp expression. The results of this study may facilitate the development of new strategies to prevent multidrug resistance and provide a plausible mechanism for acquired drug resistance by CK2-mediated regulation of P-gp expression.</P>