Agrobacteriuk Flashcards
What is an opine
Low molecular weight compounds
Encoded by the T- DNA segment of DNA on an TI plasmid (agrobacterium tumerfaciens) and Ri plasmid for (Rhibozium bacteria)
Encoded on the section of DNA which is transferred into the plant genome but the adjacent vir gene present on the plasmid
They are high in carbon and nitrogen therefore can be metabolised to become a energy substrate to form essential amino acids for the bacteria to grow
They are produced by the plant genome mechanism as they have been integrated
What is cross viral protection
Prior infection of a plant with a mild strain of a virus can protect against subsequent infection with a more virulent strain
Transgenic coat protein gene of many viruses confers effective inhibition of subsequent virus infection
A commercial success of this is the papaya ringspot virus which affected the papaya industry. Using cross viral protection able to save papaya from devastating virus
Was first seen in tobacco plants which were infected with a mild strain of yellow virus the when infected with a more virulent strain immune resistance occurs
Countries like Holland is rely on this technology however we don’t do it in the Uk due to the fact it’s expensive , difficulty of delivery and the risk that the mutant strain may become virulent and infect the plants and kill large amounts
