A lenticel is a spongy area present in the cork surfaces of the stems, roots, and other parts of vascular plants. It appears on the surface as a lenticular (lens-shaped) spot, which acts as a pore. These structures allow for the exchange of gases between the internal tissues and atmosphere to occur across the periderm, which would otherwise prevent this exchange of gases. Bark, also known as periderm is the outermost layer of stems and Roots of Woody plants such as Trees It overlays the Wood and consists The name lenticel, pronounced with a soft c, derives from its lenticular shape. The shape of lenticels is one of the characteristics used for tree identification.
Contents |
Formation
Lenticel formation begins during the development of the first periderm. Bark, also known as periderm is the outermost layer of stems and Roots of Woody plants such as Trees It overlays the Wood and consists In the stem, they usually appear below a stoma or group of stomata. In Botany, a stoma (also stomate; plural stomata) is a tiny opening or pore found mostly on the underside of a Plant Leaf In Botany, a stoma (also stomate; plural stomata) is a tiny opening or pore found mostly on the underside of a Plant Leaf Lenticels are found as raised circular, oval, or elongated areas on stems and roots. As stems and roots mature lenticel development continues in the newly forming periderm found at the bottom of cracks in the bark. Bark, also known as periderm is the outermost layer of stems and Roots of Woody plants such as Trees It overlays the Wood and consists
Fruits
Lenticels are also present on many fruits, quite noticeably on many apples and pears. On European pears, they can serve as an indicator of when to pick the fruit, as light lenticels on immature fruit darken and become brown. The European Pear Pyrus communis is a species of Pear native to central and eastern Europe and southwest Asia. [2] Certain bacterial and fungal infections can penetrate fruits through their lenticels, with susceptibility sometimes increasing with its age. [3]
Notes
- ^ "Lenticel". The American Heritage Science Dictionary, Houghton Mifflin Company, via dictionary. com. Retrieved on 2007-10-11
- ^ Pyzner, John. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1138 - A massive earthquake struck Aleppo, Syria. 1531 - Huldrych Zwingli is killed (2005-04-19. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Events 1012 - Martyrdom of Alphege in Greenwich London. 1529 - At the Second Diet of Speyer ) "Pick pears before completely ripe, advises LSU AgCenter horticulturist". Louisiana State University AgCenter website. Retrieved on 2007-10-11. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1138 - A massive earthquake struck Aleppo, Syria. 1531 - Huldrych Zwingli is killed
- ^ Irtwange, S. V. (February, 2006. ) "Application of modified atmosphere packaging and related technology in postharvest handling of fresh fruits and vegetables". Agricultural Engineering International: the CIGR Ejournal. Invited Overview No. 4. Vol. VIII, page 8. Retrieved on 2007-10-11. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1138 - A massive earthquake struck Aleppo, Syria. 1531 - Huldrych Zwingli is killed
References
- Raven, Peter H. ; Ray F. Evert, Susan E. Eichorn (2005). Biology of Plants 7th Ed. . W. H. Freeman and Company Publishers, 586-587. ISBN 0-7167-1007-2.
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic