著者

Mari Narusaka Tomonori Shiraishi Masaki Iwabuchi Yoshihiro Narusaka

出版者

Japanese Society for Plant Biotechnology

雑誌

Plant Biotechnology (ISSN:13424580)

巻号頁・発行日

vol.27, no.4, pp.349-351, 2010-09-25 (Released:2010-09-25)

参考文献数

7

被引用文献数

24 45

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The floral dip protocol mediated by Agrobacterium tumefaciens is the most widely used transformation method for Arabidopsis thaliana. The “floral dip” process in which A. thaliana flower buds are dipped in an Agrobacterium cell suspension requires large volumes of bacterial cultures grown in liquid media, large shakers and centrifuges, and experimental space for them. These factors limit the number of transformations that can occur at once. We established that A. thaliana can be transformed by inoculating 5 μl of Agrobacterium cell suspension in flower buds, thus avoiding the use of large volumes of Agrobacterium culture. Using this modified protocol, we obtained 15–50 transgenic plants per transformation from each pot containing 3 A. thaliana plants. The protocol is satisfactory to be used for subsequent analyses. This simplified method, without floral dipping, which requires large volumes of Agrobacterim culture, offers as efficient a transformation as previously reported protocols. This method reduces the required workload, cost, time, and space. Furthermore, an important aspect of this modified protocol is that it allows many independent transformations to be performed at once.

著者

Mari Narusaka Tadashi Hatanaka Yoshihiro Narusaka

出版者

Japanese Society for Plant Biotechnology

雑誌

Plant Biotechnology (ISSN:13424580)

巻号頁・発行日

vol.38, no.4, pp.453-455, 2021-12-25 (Released:2021-12-25)

参考文献数

22

被引用文献数

5

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Alpinia zerumbet (Pers.) B.L. Burtt and R.M. Smith belongs to the Alpinia genus in the Zingiberaceae family. In East Asia, Alpinia zerumbet has been widely used as food and traditional medicine. Previously, we identified proanthocyanidins (PACs), an anti-plant-virus molecule in A. zerumbet, using Nicotiana benthamiana and tomato mosaic virus (ToMV). Here, we found that PACs from A. zerumbet, apple, and green tea effectively inhibited ToMV infection. Additionally, the PACs from A. zerumbet exhibited greater antiviral activity than those from apple and green tea. The PACs from A. zerumbet also effectively inactivated influenza A virus and porcine epidemic diarrhea virus (PEDV), which acts as a surrogate for human coronaviruses, in a dose-dependent manner. The results from the cytopathic effect assays indicated that 0.1 mg/ml PACs from A. zerumbet decreased the titer of influenza A virus and PEDV by >3 log. These findings suggested that the direct treatment of viruses with PACs from A. zerumbet before inoculation reduced viral activity; thus, PACs might inhibit infections by an influenza virus, coronaviruses, and plant viruses.