Question

How are lateral branches of roots formed?

   How are lateral branches of roots formed?

Biology

Peter H. Raven 7th Edition

Chapter 38, Problem 5

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Solved by Expert Vivek Singh

02/25/2022

Step 1

The pericycle is a layer of cells surrounding the central vascular cylinder. In mathematical terms, we can denote the pericycle as $P$ and the central vascular cylinder as $C$. Show more…

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How are lateral branches of roots formed?

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Key Concepts

Pericycle Cells

The pericycle is a specialized layer of cells found just inside the root endodermis. These cells are essential for lateral root formation because they retain the ability to re-enter the cell cycle, initiating the process that leads to the development of new roots on the sides of the primary root.

Hormonal Regulation (Auxin Signaling)

Auxin is a key plant hormone that regulates many aspects of plant development, including lateral root formation. Localized concentrations and gradients of auxin trigger the dedifferentiation and division of pericycle cells, orchestrating the initiation and patterning of lateral root primordia.

Cell Division and Differentiation

The process of forming lateral roots involves the reactivation of cell division in differentiated pericycle cells, followed by a series of coordinated cell divisions and differentiation events. This leads to the formation of a lateral root primordium, which eventually develops into a mature lateral root branch.

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