VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T06:44:57ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2022-08-22T03:57:42Z2022-08-22T03:57:42Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/4727This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/47272022-08-22T03:57:42ZExpression analysis of the duplicated genes in the NAC transcription factor gene family
related to the drought stress response in peanuts (Arachis hypogaea)NAC has been considered one of the largest transcription factor families in plant species. In
peanut (Arachis hypogaea), 29 members of the AhNAC gene family have been identified and
characterized. However, the information of their functions related to the mechanism of the stress
response has been reported. In this study, a total of seven duplication events, which occurred
from the segmental duplication, has been predicted in the AhNAC gene family in peanuts. The
Ka/Ks ratios revealed that natural selection prevented the presence of the point mutations in the
most duplicated genes, consequently, maintaining their structure and function during evolution.
Based on the unrooted phylogenetic tree between AhNAC proteins in peanuts and 23 drought�responsive CaNAC in chickpea (Cicer arietinum), we proposed 12 members of the AhNAC that
potentially share similar functions with well-characterized NAC in chickpea. Furthermore,
various hormone- and drought-responsive cis-regulatory elements have been found in the
promoter regions of these candidate genes. Re-analysis of the previous RNA-Seq demonstrated
that the majority of the candidate AhNAC genes were responsive to the osmotic stress. Taken
together, our study could provide an important foundation for further functional characterization
towards the improvement of stress tolerance in peanuts.Thi Thanh Huyen TranDuc Ha Chucd.ha@vnu.edu.vnDang Khoa Trankhoatd@vnu.edu.vnViet Hong Lalaviethong.sp2@gmail.comPhuong Loan HoangVan Tien TranThi Thu Huong BuiHuy Gioi Dong2022-08-19T05:35:25Z2022-08-19T05:35:25Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/4771This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/47712022-08-19T05:35:25ZỨng dụng từ trường trong thúc đẩy sinh trưởng, phát triển và sinh khối của cây trồngThực vật luôn tồn tại và sinh sôi trong điều kiện từ trường (magnetic field, MF) trái đất. Tuy nhiên, cơ chế tác động của từ trường đến thực vật đến nay vẫn chưa được làm sáng tỏ. Bài báo trình bày một cách chi tiết về tác động của từ trường đến sinh trưởng, phát triển và sinh khối của cây trồng. Trong đó, xử lý MF được chứng minh có thể tăng cường hoạt tính của các enzyme phân giải giúp tăng tỷ lệ nảy mầm ở hạt. Xử lý MF cũng giúp kích thích tổng hợp sắc tố ở lá, tăng hiệu quả của quang hợp và hô hấp giúp cây sinh trưởng và phát triển tốt hơn, đồng thời cải thiện được khả năng chống chịu các điều kiện ngoại cảnh bất thuận. Mặc dù vậy, xử lý MF vẫn đặt ra một số câu hỏi liên quan đến độc tính và những tác động môi trường. Tóm lại, bài báo này đã cung cấp một cái nhìn toàn diện về một giải pháp mới trong nghiên cứu sản xuất nông nghiệp bền vững và thân thiện với môi trường.Duc Ha Chucd.ha@vnu.edu.vnViet Hong Lalaviethong.sp2@gmail.comThi Quyen Haquyenht@vnu.edu.vnK.L. Nguyennl.khanh@vnu.edu.vnChau Thuy PhamDang Khoa Trankhoatd@vnu.edu.vnDang Co Nguyencond@vnu.edu.vnDinh Tu BuiHuy Hàm Lêlhham@agi.ac.vn2022-06-21T10:21:31Z2022-06-21T10:21:31Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/4738This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/47382022-06-21T10:21:31ZỨng dụng từ trường trong thúc đẩy sinh trưởng, phát triển và sinh khối của cây trồngHuu Kien NguyenDuc Ha Chucd.ha@vnu.edu.vnViet Hong Lalaviethong.sp2@gmail.comThi Quyen Haquyenht@vnu.edu.vnLe Khanh NguyenChau Thuy PhamDang Khoa Trankhoatd@vnu.edu.vnDang Co Nguyencond@vnu.edu.vnDinh Tu Buibuidinhtu@vnu.edu.vnHuy Hàm Lêlhham@agi.ac.vn2018-07-06T03:27:37Z2018-07-06T03:27:37Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/3038This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/30382018-07-06T03:27:37ZThe Nutritional Value of Three Species of Microalgae for Clam larvae, Meretrix meretrixA feeding trial was conducted to assess the nutritional value of three monospecific microalgal diets for clam larvae, Meretrix meretrix. The three species tested were Chaetoceros TH01, Pavlova TH03 và Thalassiosira TH06. The fatty acids of Chaetoceros TH01, Pavlova TH03 were saturated fatty acids ranged 71.36 to 73.76%; Pavlova TH03 had amounts of HUFAs fatty acids 70,53%, of which MUFAs 31,77%, PUFAs 38,76%. Diatoms contained HUFAs as Eicosatetraenoic acid (ETA), Arachidonic acid (AA), Eicosapentaenoic Acid (EPA). Three species of microalgae included Chaetoceros TH01, Pavlova TH03 and Thalassiosira TH06 all showed good growth in larval size and improved survival rate. Pavlova TH03 was the most suitable for growth stages of clam larvae, with a survival rate of more than 90%, average length of shells met the standard of growth stages of clam which were 120.5 μm (veliger larvae); 420.5 μm (spat larvae). The results iliustrate the importance of experimental testing of algal diets for larvae rather than sole reliance on published nutritional values.Dang Khoa Trankhoatd@vnu.edu.vnThi Bich Dao PhamThi Hoai Ha Nguyen2016-12-31T10:22:45Z2016-12-31T10:22:45Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/2380This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/23802016-12-31T10:22:45ZLipid biosynthesis of ten Thraustochyrid strains isolated from mangrove Xuan Thuy, Nam DinhThe features of polyunsaturated fatty acid-PUFA structures were corresponded to each separate functions as adjusting the cellular physiology and gene expression. Therefore, lack of PUFA could lead to abnormalities in skin, kidney, neural networks, immune responses and inflammation; cardiovascular, endocrine, respiratory and reproductive systems. In fish oil, PUFA content were low, thus it was difficult to produce on a large scale. Therefore, the exploration of PUFA sources particularly as arachidonic acid-AA, eicosapentaenoic acid EPA, docosapentaenoic acid-DPA/DHA attracted many researches. Heterotrophic microalgae Thraustochytrids were capable of producing high amounts of DHA and PUFA composition varied. DHA can be synthesized by the metabolism of AA, EPA and DPA. The different types of PUFA reflected relationships in classification. Ten heterotrophic microalgae thraustochytrids isolated from mangrove Xuan Thuy, Nam Dinh contain fatty acid composition varied from C12 to C28. Especially, they had two important fatty acids of PUFA as EPA and DPA. Polyunsaturated fatty acids - PUFA content of ten thraustochytrid strains were from 28.95 to 49.62% total lipid. DPA compared to other PUFA were high for all thraustochytrid strains studied, accounting 20.22 to 39.35% TFA. Ten thraustochytrid strains had the highest growth with carbon source as glucose, total lipid reached 7 to 12.35 % dry weight biomass after 72 hours. Growth rate and lipid biosynthesis in organic nitrogen source were higher than in inorganic nitrogen sources. The best source of nitrogen for growth and lipid biosynthesis of ten thraustochytrid strains is yeast extract, total lipid were 8.57 to 18.87% dry weight biomass after 72 hours.Thi Bich Dao PhamDinh Tuan NguyenDang Khoa Trankhoatd@vnu.edu.vnThi Huyen ChuHoang Thanh DoThi Hoai Ha Nguyen2016-07-18T03:18:27Z2016-07-18T03:19:47Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/1818This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/18182016-07-18T03:18:27ZMicroalgae as indicators of eutrophication in Hoan Kiem lake, Hanoi, VietnamThi Hoai Ha NguyenThi Bich Dao PhamThanh Loan DangNgoc Thanh NguyenDinh Tuan NguyenThi Mai PhamDang Khoa Trankhoatd@vnu.edu.vn2015-08-12T03:37:36Z2015-08-12T03:37:36Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/1283This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/12832015-08-12T03:37:36ZPreparation of Positively Charged Membrane from Natural Rubber Latex Blending with ChitosanFilm formation of natural rubber latex (NRL) blended with various concentrations of chitosan was investigated. Atomic force microscopy (AFM) images clearly showed that the NRL film covered chitosan phase. Roughness of the films which was calculated from AFM image increases with increasing chitosan concentration. Miscibility of NRL and chitosan in solution was investigated by using dynamic mechanical thermal analysis (DMTA) and found that chitosan incorporated with NRL less than 40 weight percentage (wt%) was partially miscible. Films of the chitosan blending with higher NRL contents exhibited two peaks of glass transition temperatures. Interfacial polarization and dielectric properties of polymer films were improved with increasing NRL contents. Chemical structure of the blends was characterized by using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR).Taweepreda WirachTuaybut SupawadeePuangmanee SineenartDang Khoa Trankhoatd@vnu.edu.vn