Tổng hợp tài liệu, ebook Sinh Học tham khảo.
Đến nay, chưa có báo cáo nào công bố về sự tái sinh cây thông qua quá trình phát sinh phôi vô tính ở sâm Việt Nam. Trong nghiên cứu này, khả năng phát sinh phôi vô tính gián tiếp qua sự hình thành mô sẹo từ việc nuôi cấy mẫu lớp mỏng tế bào cắt ngang của lá (tTCL) ở sâm Việt Nam (Panax vietnamensis Ha et Grushv.) đã được tiến hành nghiên cứu. Cá...
11 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 446 | Lượt tải: 0
Panax stipuleanatus H.T.Tsai et K.M.Feng which belongs to the genus Panax (Araliaceae family) is an valuable medicinal herbs in Vietnam and China. In the rhizome of Panax stipuleanatus H.T.Tsai et K.M.Feng contains many olean-type triterpenoid saponins, which can improve mental stamina and reduces risks of cancers in humans. Up to now, there is ...
6 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 503 | Lượt tải: 0
Microbial metagenome DNA in the guts of Coptotermes gestroi has been extracted and sequenced by metagenomic techniques. In previous studies, we acquired and sequenced more than 5 Gb of DNA metagenome DNA of the termite gut microbiota by next-generation sequencing (Illumina). Software MGA (MetaGeneAnnotator) exploited 125.431 open reading frames ...
9 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 495 | Lượt tải: 0
Staphylococcus aureus (S. aureus) produces 11 types of toxins and more than 20 different Staphylococcal enterotoxins (SEs), including SEA to SEE, SEG to SER and SEU. Among them, enterotoxin type B (Staphylococcal enterotoxin B - SEB) is quite heat stable and causes gastrointestinal diseases in food poisoning. The symptoms of SEB intoxication beg...
6 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 530 | Lượt tải: 0
SUMMARY Dendrobium Sonia is a popular orchid and used for many purposes in Vietnam. In this study, the transformation is set on protocorm like bodies (PLBs) mediated by Agrobacterium tumefaciens containing vector with GUS gene and kanamycin resistance gene. The main factors influencing the transformation including medium for regeneration and gr...
9 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 491 | Lượt tải: 0
SUMMARY The addition of organic compounds into the basal media in vitro enhanced the metabolic process of slow growing plants. In this study, effects of three different groups of organic compounds, including (i) the group of banana homogenate (BH), potato tuber sections (PTS) and coconut water (CW); (ii) the group of peptone, triptone and yeast...
7 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 622 | Lượt tải: 0
Over the recent years, results from investigation into the family Horseshoe bats (Rhinolophidae) indicated that the taxonomic status of many species in Vietnam is still unclear. Having studied on 1,140 specimens of the genus Rhinolophus, we confirm that Vietnam is a home to 20 horseshoe bat species. Remarkably, our study results obtained 6 unusu...
11 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 557 | Lượt tải: 0
SUMMARY Soybean is a drought-sensitive crop, thus their productivity is significantly affected by this factor. Among two soybean varieties studied, based on the evaluation of root and shoot growth and architecture under drought treatment and normal condition, our results showed that MTD777-2 is more drought-resistant than the control Williams 8...
6 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 498 | Lượt tải: 0
Compounds 1−3 were evaluated for their cytotoxicity against five human cancer cell lines, including HepG2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-MEL-2 (melanoma) using the sulforhodamine B method [12] and following the previously described protocols [13, 14]. As the results, only culci...
6 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 424 | Lượt tải: 0
SUMMARY 2-Methylketone is the organic compound containing a ketone functionality on the second carbon. This group of compounds has been known for their widespread applications in plant protection, fragrance and flavor industry, and biofuel production. Previously, two cDNAs encoding two proteins necessary for methylketone biosynthesis in the wil...
7 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 500 | Lượt tải: 0