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((Refimprove|date=May 2016))
The '''pericycle''' is a cylinder of [[Ground tissue#Parenchyma|parenchyma]] or [[sclerenchyma]] cells that lies just inside the [[endodermis]] and is the outer most part of the [[stele (biology)|stele]] of plants.((Citation needed|date=August 2023))

Although it is composed of non-vascular parenchyma cells, it's still considered part of the vascular cylinder because it arises from the procambium as do the vascular tissues it surrounds.((Citation needed|date=August 2023))

In [[eudicots]], it also has the capacity to produce [[lateral roots]].  Branch roots arise from this primary [[meristem]] tissue. In plants undergoing [[secondary growth]], the pericycle contributes to the [[vascular cambium]] often diverging into a [[cork cambium]].((Citation needed|date=August 2023))

In [[angiosperms]] certain molecules within the [[endodermis]] and the surrounding vasculature are sent to the pericycle which promotes the growth of the root [[meristem]]s.((Citation needed|date=August 2023))

== Location ==

The pericycle is located between the endodermis and phloem in plant roots.  In dicot stems, it is situated around the ring of vascular bundles in the stele.<ref>((cite journal |doi=10.1016/j.cub.2014.03.031 |pmid=24845660 |title=Pericycle |journal=Current Biology |volume=24 |issue=10 |pages=R378–9 |year=2014 |last1=Beeckman |first1=Tom |last2=De Smet |first2=Ive |doi-access=free ))</ref>

== Function ==

In dicot roots, the pericycle strengthens the roots and provides protection for the [[vascular bundle]]s.((Citation needed|date=August 2023))

In dicot root, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue.((Citation needed|date=August 2023))

The pericycle regulates the formation of lateral roots by rapidly dividing near the xylem elements of the root.<ref>((cite journal |pmid=7588064 |url=http://dev.biologists.org/cgi/pmidlookup?view=long&pmid=7588064 |year=1995 |last1=Laskowski |first1=M. J. |title=Formation of lateral root meristems is a two-stage process |journal=Development |volume=121 |issue=10 |pages=3303–10 |last2=Williams |first2=M. E. |last3=Nusbaum |first3=H. C. |last4=Sussex |first4=I. M. | doi=10.1242/dev.121.10.3303 ))</ref>

It has been known to often be confused with other parts of the plant. However, its unique ring structure allows it to be more easily identified.((Citation needed|date=August 2023))

Past efforts to isolate such tissue have been successful. Monocot roots rarely branch, but can, and this branch will originate from the pericycle.((Citation needed|date=August 2023))

==References==
((Reflist))

[[Category:Plant morphology]]


((Plant-morphology-stub))

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