BIOL240 Lecture Notes - Lecture 23: Leghemoglobin, Deltaproteobacteria, Mesorhizobium
15 Mar 2019
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This is because they make pyoverdine which gives off the glow. It"s a siderophore protein which can leave the cell. So, to combat this, they have thick capsule slime layer to keep o2 out and their rate of respiration is very high so low internal concentration of o2. Agrobacterium and the rhizobia: different types of n2 fixers though agrobacterium doesn"t fix n2, both are part of alphaproteobacterial, gram -ve, plant associated, agrobacterium parasite. Has a plasmid that causes plant tumors called crown gall disease: has something called tdna in plasmid. This region that is transferred: when plant gets a cut near crown or top of roots, the bacteria gets in and the dna is transferred. This strip is oncogenes promotes rapid cell growth. When implemented in to cell dna, the cell rapidly divides making more cells that divide also: opine gene is part of tdna. Opine can only be used by bacteria that have tdna.
