Scientists use bacteria to speed up growth of ginseng roots

Last update 08:10 | 23/03/2017

VietNamNet Bridge – The scientists from the HCM Biotechnology Center have succeeded in using Agrobacterium rhizogenes bacteria to create hairy roots of Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv) which contains active saponin.

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According to Dr Duong Hoa Xo, director of the center, it takes five to seven years to grow Ngoc Linh ginseng, while the yield is low and the plant is only suitable to soil conditions in Ngoc Linh mountainous area.

Therefore, the success of the research has an important significance as it helps multiply ginseng roots more quickly and provide materials to produce saponin as alternatives for natural products.

The scientists infected the wounds in petiole and leaves of ginseng cultivated in the laboratory with agrobacterium rhizogenes, a Gram-negative soil bacterium that produces hairy root disease in dicotyledonous plants, which contains rol gene.

The gene is transferred from the bacteria into ginseng plants, stimulating the hairy roots to grow strongly without the need for a growth-promoting agent it is able to synchronize secondary active elements like the mother plants in the wild.

It takes five to seven years to grow Ngoc Linh ginseng, while the yield is low and the plant is only suitable to soil conditions in Ngoc Linh mountainous area. 

The analysis of the extract from the created hairy roots showed there were three groups of Protopanaxadiol, Protopanaxatriol and Ocotillol saponin in Ngoc Linh ginseng, including G-Rg1, G-Rb1 and MR2.

The scientists selected some fast-growing, high-saponin hairy roots to multiply on the bioreactor system with a multiplication coefficient of up to 20fold after two to three months of culture.

Xo said the center has signed an MOU with a herbal medicine company on cooperation in making products from ginseng hairy roots, such as liquor, tea and other drinks.

Nguyen Minh Duc from the HCMC Medical and Pharmaceutical University, highly appreciating the research work, said that the work will increase opportunities for people to use Vietnamese ginseng.

According to Xo, with the focus on research and transfer pf technology to serve production, in the last 12 years since the establishment, the center has implemented three scientific research projects at the state level, 16 projects at provincial level and more than 80 at grassroots level in many different fields.

In plant biotechnology, hundreds of precious medicinal herbs, orchids and ornamental plant species have been successfully preserved and multiplied.

As for orchids, scientists have collected, imported, tested and multiplied 350 varieties of different kinds, serving the preservation of gene sources and breeding. These include 136 varieties of precious forest orchids of Vietnam.

In 2014, the center put the glass house and net house that serve the plant tissue cultivation into operation. Since then, the multiplication capacity has reached nearly 400,000 plants.

In creating orchid varieties, there have been 34 successful cross-bred combinations multiplied in a laboratory; 30 combinations were grown in an arboretum and 19 combinations have bloomed.

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Thanh Lich

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This entry was posted in Herbal medicine - thuốc Bắc và thuốc Nam, Y tế and tagged , , , , by Trần Đình Hoành. Bookmark the permalink.

About Trần Đình Hoành

I am an attorney in the Washington DC area, with a Doctor of Law in the US, attended the master program at the National School of Administration of Việt Nam, and graduated from Sài Gòn University Law School. I aso studied philosophy at the School of Letters in Sài Gòn. I have worked as an anti-trust attorney for Federal Trade Commission and a litigator for a fortune-100 telecom company in Washington DC. I have taught law courses for legal professionals in Việt Nam and still counsel VN government agencies on legal matters. I have founded and managed businesses for me and my family, both law and non-law. I have published many articles on national newspapers and radio stations in Việt Nam. In 1989 I was one of the founding members of US-VN Trade Council, working to re-establish US-VN relationship. Since the early 90's, I have established and managed VNFORUM and VNBIZ forum on VN-related matters; these forums are the subject of a PhD thesis by Dr. Caroline Valverde at UC-Berkeley and her book Transnationalizing Viet Nam. I translate poetry and my translation of "A Request at Đồng Lộc Cemetery" is now engraved on a stone memorial at Đồng Lộc National Shrine in VN. I study and teach the Bible and Buddhism. In 2009 I founded and still manage dotchuoinon.com on positive thinking and two other blogs on Buddhism. In 2015 a group of friends and I founded website CVD - Conversations on Vietnam Development (cvdvn.net). I study the art of leadership with many friends who are religious, business and government leaders from many countries. In October 2011 Phu Nu Publishing House in Hanoi published my book "Positive Thinking to Change Your Life", in Vietnamese (TƯ DUY TÍCH CỰC Thay Đổi Cuộc Sống). In December 2013 Phu Nu Publishing House published my book "10 Core Values for Success". I practice Jiu Jitsu and Tai Chi for health, and play guitar as a hobby, usually accompanying my wife Trần Lê Túy Phượng, aka singer Linh Phượng.

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