Pericycle: Difference between revisions
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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}} | 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 is 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}} | Although it is composed of non-vascular [[parenchyma]] cells, it is 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 [[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}} | ||
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== Location == | == 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 |bibcode=2014CBio...24.R378B }}</ref> | The pericycle is located between the [[endodermis]] and phloem in plant roots. In [[Dicotyledon|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 |bibcode=2014CBio...24.R378B }}</ref> | ||
== Function == | == Function == | ||
In dicot roots, the pericycle strengthens the roots and provides protection for the [[vascular bundle]]s.{{Citation needed|date=August 2023}} | In [[Dicotyledon|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}} | 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}} | ||
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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}} | 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}} | Past efforts to isolate such tissue have been successful. [[Monocotyledon|Monocot]] roots rarely branch, but can, and this branch will originate from the pericycle.{{Citation needed|date=August 2023}} | ||
==References== | ==References== | ||
Latest revision as of 13:04, 30 June 2025
Template:Refimprove The pericycle is a cylinder of parenchyma or sclerenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants.Script error: No such module "Unsubst".
Although it is composed of non-vascular parenchyma cells, it is still considered part of the vascular cylinder because it arises from the procambium as do the vascular tissues it surrounds.Script error: No such module "Unsubst".
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.Script error: No such module "Unsubst".
In angiosperms certain molecules within the endodermis and the surrounding vasculature are sent to the pericycle which promotes the growth of the root meristems.Script error: No such module "Unsubst".
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.[1]
Function
In dicot roots, the pericycle strengthens the roots and provides protection for the vascular bundles.Script error: No such module "Unsubst".
In dicot root, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue.Script error: No such module "Unsubst".
The pericycle regulates the formation of lateral roots by rapidly dividing near the xylem elements of the root.[2]
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.Script error: No such module "Unsubst".
Past efforts to isolate such tissue have been successful. Monocot roots rarely branch, but can, and this branch will originate from the pericycle.Script error: No such module "Unsubst".