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Vegetative Growth and Molecular Identification of Fusarium equiseti Isolated from Wilt Disease of Centella asiatica L. in Bangladesh

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American Journal of Plant Sciences 2022年第2期13卷 294-305页

作者： Poli Akter Shahida Khatun durga das bhowmik Farzana Ashrafi Neela Nuhu Alam Laboratory of Mycology and Plant Pathology Department of Botany Jahangirnagar University Savar Bangladesh Department of Botany University of Rajshahi Rajshahi Bangladesh

Centella asiatica (L.) is commonly known as Thankuni plant and has ethnobotanical importance in Bangladesh. Present experiment was conceded to investigate the wilt disease of C. asiatica, vegetative growth and molecular characterization of pathogenic fungi. Pathogenic fungus, Fusarium equiseti was identified as a causal agent of wilt disease in C. asiatica. The effect of culture media on the mycelial growth of F. equiseti showed the highest (89.25 mm) on potato dextrose agar (PDA) medium followed by carrot agar (CA) medium and the lowest growth (40.25 mm) was measured in HA medium. The optimal temperature and pH for mycelial growth of F. equiseti were 30°C and 7, respectively. The genetic variation of the selected species of fungi, the internal transcribed spacer (ITS) region was amplified using ITS4 and ITS5 primers and sequenced. The PCR product of the ITS region of F. equiseti was 535 bp. Phylogenetic tree of thirty-seven strains of Fusarium sp. based on the nucleotide sequences of the ITS region using the neighbor-joining method with 1000 bootstrapping indicated that 98% - 100% identity with MN886590.1 JUF0046 (F. equiseti). ITS sequences are generally constant, or show little variation within species, but vary between species in a genus. The ITS region is relatively short and can be easily amplified by PCR using universal single primer pairs. Genetic distance exhibited high level of similarity with identical ITS sequences. To date, no published research articles are found on the molecular identification of F. equiseti, the causal agent of fusarium wilt disease of C. asiatica in Bangladesh.

关键词： Centella asiatica (L.) Fusarium equiseti Molecular Identification Vegetative Growth Wilt Disease

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Study of hsCRP, adiponectin, NF-κB in low bodyweight, standard bodyweight and obese subjects with type 2 diabetes mellitus in India

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Journal of Diabetes Mellitus 2012年第4期2卷 386-392页

作者： Sidhartha das durga Prasanna Misra Pratima Kumari Sahu Department of Biochemistry Sriram Chandra Bhanj Medical College Cuttack India Department of Medicine Sriram Chandra Bhanj Medical College Cuttack India

Introduction: Low bodyweight type 2 DM is a distinct clinical entity having many inherent peculiarities seen in India and developing countries, constituting 11% to 25% of type 2 diabetic subjects. Our study aimed at assessing the prevalence of inflammatory markers like hsCRP, adiponectin and NF-κB expression in peripheral blood mononuclear cells in subjects with type 2 DM in relation to BMI. Materials and Methods: 57 consecutive type 2 diabetics were recruited for study, classified as Low Bodyweight (A = BMI < 18.5), Standard weight (B = BMI 18.5 - 24.99) and Obese (C = BMI ≥ 25). Group D comprised 14 healthy controls. They were evaluated for clinical parameters, FBG, 2hrPPBG, HbA1c, lipid profile and above mentioned inflammatory markers. Results: Serum hsCRP was significantly higher in all group of diabetics as compared to Group D but was lowest in Group A. Adiponectin levels were highest in Group D, similar in Groups B and C but lowest in Group A. NF-κB expression, though higher in diabetic subjects than controls (OD = 0.041 ± 0.006), was least in Group A (OD = 0.045 ± 0.005). Discussion and Conclusion: Our study revealed that Indians with type 2DM are in a pro-inflamematory state. Low bodyweight type 2 diabetics had the least pro-inflammatory load. This further supported the earlier observation of lesser macrovascular disease load and testifying that Low Bodyweight type2DM constitutes a distinct entity.

关键词： Low Bodyweight Type 2 DM hsCRP NF-κB Adiponectin

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Green Degumming of Silk by Enzyme Extracted from Natural Sources

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Journal of Materials Science and Chemical Engineering 2020年第8期8卷 30-40页

作者： Mahbubur Rahman Asim bhowmik Sudipta das Kartick Chowhan Tanmoy Biswas Department of Textile Engineering Mawlana Bhashani Science and Technology University Tangail Bangladesh

The main objective of this work is to degum the silk with natural enzyme in lieu of conventional degumming to make it sustainable. Fibroin and sericin are the main composition of silk. Sericin provides a harsh and stiff effect of silk and decreases the valuable property like luster and whiteness and also leads to uneven dyeing. It is necessary to remove this sericin for the better post processing of silk. The removal process of sericin from silk is called degumming. Usually degumming process is done by using chemicals like soda (Na2CO3), detergent and other chemical staffs. But these chemicals are lethal to the environment. So, if such component found that can be substitute the fatal components and give the same required result or very close then that would be considered as an asset. This work deals with the different enzymes extracted from natural sources such as papaya skin, pineapple skin and guava leaf with variation of enzyme concentrations such as 10 (%), 15 (%) & 20 (%) as well as 35°C 45°C & 55°C temperatures that influence the degumming efficiency. By analyzing the various samples on the basis of degumming efficiency and other tests such as tensile strength, water vapor permeability, pilling and abrasion, crease recovery, whiteness test and spot test are done by standard method, it is found that the enzyme extracted from papaya skin shows the best degumming efficiency 15.9 (%) and other tests also show the good result at 15 (%) concentration and 45°C temperature whereas degumming efficiency 16.6 (%) for conventional process. From this work, it can be concluded that enzyme extracted from papaya skin can be substituted of conventional degumming which is also ecofriendly.

关键词： Degumming Silk Enzyme Pineapple Skin Ecofriendly

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