pericycle

内鞘

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/04/02 19:51:12」(JST)

wiki en

[Wiki en表示]

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.

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.

In dicots, 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.

Structure

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.

It may be of single layer or it may be multilayered.

Function

In dicot stems, the pericycle strengthens the stem and provides protection for the vascular bundles.

In dicot roots, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue.

Since it has the capacity to produce lateral roots, the pericycle also, therefore, regulates the formation of lateral roots.

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

Past efforts to isolate such tissue have been successful. Monocot roots rarely branch, but can, and this branch will originate from the pericycle.

English Journal

• The transcription factor OBP4 controls root growth and promotes callus formation.

• Ramirez-Parra E1, Perianez-Rodriguez J1, Navarro-Neila S1, Gude I1, Moreno-Risueno MA1, Del Pozo JC1.
• The New phytologist.New Phytol.2017 Mar;213(4):1787-1801. doi: 10.1111/nph.14315. Epub 2016 Nov 17.
• PMID 27859363

• Periodic Lateral Root Priming: What Makes It Tick?

• Laskowski M1, Ten Tusscher KH2.
• The Plant cell.Plant Cell.2017 Mar;29(3):432-444. doi: 10.1105/tpc.16.00638. Epub 2017 Feb 21.
• PMID 28223442

• RIMA-Dependent Nuclear Accumulation of IYO Triggers Auxin-Irreversible Cell Differentiation in Arabidopsis.

• Muñoz A1, Mangano S1, González-García MP1, Contreras R1, Sauer M1, De Rybel B2, Weijers D2, Sánchez-Serrano JJ1, Sanmartín M3, Rojo E3.
• The Plant cell.Plant Cell.2017 Mar;29(3):575-588. doi: 10.1105/tpc.16.00791. Epub 2017 Feb 21.
• PMID 28223441

Japanese Journal

• ペポカボチャ側根における親水性及び疎水性化合物の異なる吸収経路

• Journal of Pesticide Science 40(3), 99-105, 2015
• NAID 130005094237

• ペポカボチャ側根における親水性及び疎水性化合物の異なる吸収経路

• Journal of Pesticide Science advpub(0), 2015
• NAID 130005076108

• The phenomenon of root elongation and high respiration activity in the <i>rolB</i>-gene-enhanced FSL#35 variant of <i>Lotus corniculatus</i> FOX-SR line

• Plant Root 8(0), 82-91, 2014
• NAID 130004949467

Related Links

• Pericycle - definition of pericycle by The Free Dictionary

Define pericycle. pericycle synonyms, pericycle pronunciation, pericycle translation, English dictionary definition of pericycle. n. A plant tissue characteristic of the roots, located between the endodermis and phloem. per′i·cy′clic ...

• pericycle | plant anatomy | Britannica.com

MLA style: "pericycle". Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopædia Britannica Inc., 2015. Web. 14 Dec. 2015 < http://www.britannica.com/science/pericycle >. APA style: pericycle. (2015). In Encyclopædia Britannica

Related Pictures