Points on nodule formation
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Multiple interactions are involved in the formation of root nodules:
1) The Rhizobium bacteria divide and form colonies. These get attached to the root hairs and epidermal cells.
2) The root hairs get curled and are invadedby the bacteria.
3) This invasion is followed by the formation of an infection thread that carriesthe bacteria into the cortex of the root. The bacteria get modified into rod-shaped bacteroides.
4) As a result, the cells in the cortex and pericycle undergo division, leading to the formation of root nodules.
5) The nodules finally get connected with the vascular tissues of the roots for nutrientexchange.
1) The Rhizobium bacteria divide and form colonies. These get attached to the root hairs and epidermal cells.
2) The root hairs get curled and are invadedby the bacteria.
3) This invasion is followed by the formation of an infection thread that carriesthe bacteria into the cortex of the root. The bacteria get modified into rod-shaped bacteroides.
4) As a result, the cells in the cortex and pericycle undergo division, leading to the formation of root nodules.
5) The nodules finally get connected with the vascular tissues of the roots for nutrientexchange.
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*it occur in the roots of the plant
*with symbiotic nitrogen-fixing bacteria
*under nitrogen limiting conditions
*capable plants form a symbiotic relationship with a stain of bacteria known as rhizobia
*nitrogen fixation in the nodule is very oxygen sensitive.
I hope it helps you
*with symbiotic nitrogen-fixing bacteria
*under nitrogen limiting conditions
*capable plants form a symbiotic relationship with a stain of bacteria known as rhizobia
*nitrogen fixation in the nodule is very oxygen sensitive.
I hope it helps you
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