The Ti plasmid from Agrobacterium tumefaciens has genes for auxin, cytokinin and opine synthesis while genes for opine catabolism and Vir genes lie outside the T-DNA region. Which one of the following genes are involved in providing carbon source to Agrobacterium in their ecological niche?
1
Genes for auxin synthesis only.
2
Genes for auxin as well as cytokinin synthesis.
3
Genes for opine synthesis and opine catabolism.
4
Genes for auxin synthesis as well as opine synthesis.