Root tip magnified 100×. 1. Meristem 2. Columellae (statocytes with statolithes) 3. Lateral part of the tip 4. Dead cells 5. Elongation zone
The root cap is a type of tissue at the tip of a plant root.[1] It is also called calyptra. Root caps contain statocytes which are involved in gravity perception in plants.[1] If the cap is carefully removed the root will grow randomly. The root cap protects the growing tip in plants.[1] It secretes mucilage to ease the movement of the root through soil,[1] and may also be involved in communication with the soil microbiota.[1]
The purpose of the root cap is to enable downward growth of the root, with the root cap covering the sensitive tissue in the root.[2] Thanks to the presence of statocytes, the root cap enables geoperception or gravitropism. This allows the plant to grow downwards (with gravity) or upwards (against gravity).[3]
The root cap is absent in some parasitic plants[4]: 138 and some aquatic plants, in which a sac-like structure called the root pocket may form instead.[5]: 2–76
^ abcdeRaven, J.A.; Edwards, D. (2001). "Roots: evolutionary origins and biogeochemical significance". Journal of Experimental Botany. 52 (90001): 381–401. doi:10.1093/jexbot/52.suppl_1.381. PMID 11326045.
^Burgess, Jeremy (1985-05-16). Introduction to Plant Cell Development. CUP Archive. ISBN 9780521316118.
^Kuya, Noriyuki; Sato, Seiichi (2011). "The relationship between profiles of plagiogravitropism and morphometry of columella cells during the development of lateral roots of Vigna angularis". Advances in Space Research. 47 (3): 553–562. Bibcode:2011AdSpR..47..553K. doi:10.1016/j.asr.2010.09.009.
^Jeffrey, Edward Charles (2007). The Anatomy of Woody Plants. Pomeroy, Ohio: Carpenter Press. ISBN 978-1-4067-1634-4.
^Gupta, P.K. (2007). Genetics: Classical to Modern. Rastogi Publications. ISBN 978-8-1713-3896-2.
The rootcap is a type of tissue at the tip of a plant root. It is also called calyptra. Rootcaps contain statocytes which are involved in gravity perception...
the rootcap produces new root cells that elongate. Then, root hairs form that absorb water and mineral nutrients from the soil. The first root in seed...
as the root system burrows its way through soil that contain objects that injure the root buds. The tip of the root is protected by a rootcap that is...
rootcap and contains the "stem cells" of the plant. In this zone, cells are dividing quickly and there is little to no differentiation present. Root...
stems. In roots, the rootcap is the only place where sedimentation is observed, and only the central columella cells of the rootcap serve as gravity-sensing...
process of hydrotropism is started by the rootcap sensing water and sending a signal to the elongating part of the root. Hydrotropism is difficult to observe...
major components including the shoot apical meristem, hypocotyl, root meristem, rootcap, and cotyledons. Unlike the embryonic development in animals, and...
together produces most of the cells in an adult root. At its apex, the root meristem is covered by the rootcap, which protects and guides its growth trajectory...
such as methyl jasmonate and salicylic acid, are sensed by receptors on rootcap cells, often referred to as border cells. This induces a change in gene...
The bacteria adhere strongly to root hairs, and less strongly to the surface of the zone of elongation and rootcap mucilage. Like other enterobacteria...
of auxin streams in the rootcap and root as a whole. Auxin moves toward higher concentrations on the bottom side of the root and suppresses elongation...
cambium, heartwood and sapwood and branch collar Root anatomy, including structure of the root, root tip, endodermis About 300 BC, Theophrastus wrote...
have a third element, called a ferrule, which is a rootcap protecting the supportive surface of the root from decay. Depending on the presence of this ferrule...
fertilizer. The majority of plant species have fungi associated with their root systems in a mutualistic symbiosis known as mycorrhiza. The fungi help the...
Root beer is a sweet North American soft drink traditionally made using the root bark of the sassafras tree Sassafras albidum or the vine of Smilax ornata...
epidermis of roots originates from the layer of cells immediately beneath the rootcap. The epidermis of all aerial organs, but not roots, is covered with a cuticle...
The roots of mesophytes are well developed, branched and provided with a rootcap. The shoot system is well organised. The stem is generally aerial, branched...
Mucigel is a slimy substance that covers the rootcap of the roots of plants. It is a highly hydrated polysaccharide, most likely a pectin, which is secreted...
The bacteria attach strongly to root hairs and less strongly to the surface of the zone of elongation and the rootcap mucilage. They are bacteria of interest...
water; in plants, the rootcap senses differences in water moisture in the soil, and signals cellular changes that cause the root to curve towards the...
European and Asiatic names for cabbage are derived from the Celto-Slavic rootcap or kap, meaning "head". The late Middle English word cabbage derives from...
In the fourth Test against India, Root became the 655th player to represent England at Test level, receiving his cap from former England all-rounder Paul...
new structure known as the root primordium. The root primordium emerges as a new lateral rootlet by creating its own rootcap and apex. Both genetic and...
pulp necrosis, and necessitating either root canal treatment or extraction). The ultimate goal of pulp capping or stepwise caries removal is to protect...
rootcaps on a single root apex; seen in Pandanus sp. Root Pocket – a cap-like structure on the root-apex of some aquatic plants, which, unlike root-caps...
Stephen Root (born November 17, 1951) is an American actor. He has starred as Jimmy James on the NBC sitcom NewsRadio (1995–1999), as Milton Waddams in...
PMID 26873567. Wikimedia Commons has media related to Root canal. Root Canals at WebMD Video on Direct Pulp Capping, an alternative to Root Canal therapy...
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