apex

Lemma

apex

Etichetta di dominio

EN

Etichetta grammaticale

n.

Definizione

The tip of shoot or root. 1

Nota

Roots grow in length only from their ends. The root apex or root apical meristem is a small region at the tip of a root in which all cells are capable of repeated division and from which all primary root tissues are derived. The root apex is protected as it passes through the soil by an outer region of living parenchyma cells called the root cap. 2

Contesto

We show that large amounts of Ca are accumulated as raphide crystals in the vacuoles of specialised cortical cells (idioblast cells) of the root apex. [...] We suggest that the raphide crystals could initially act as another Ca sink involved in the regulation of Ca levels in root apices. 3

Trascrizione fonetica

[ˈā-ˌpeks] 4

Sinonimi e Antonimi

Tip 5

Abbreviazioni
ND
Etimologia

Word formed with suffix –ex from apiō, apere, to join fasten. 6

Etichetta di paese
ND
Ente

Università degli Studi di Genova - Facoltà di Lingue e letterature straniere - Corso di laurea Teorie e tecniche della mediazione interlinguistica

Data della scheda
Thu Jan 1 01:00:00 1970
Autore

Cristina Cazzola rev. Gerbaudo

Fonti

1 : «http://extension.oregonstate.edu/mg/botany/glossary/html», (12/07/2008)

2 : «http://www.britannica.com/EBchecked/topic/29628/apical-meristem», (12/10/2011)

3 : «http://www.publish.csiro.au/paper/FP02212.htm», (12/10/2011)

4 : «http://www.merriam-webster.com/dictionary/apex?show=0&t=1318406104», (12/10/2011)

5 : «http://extension.oregonstate.edu/mg/botany/buds.html», (12/10/2011)

6 : Klein E., , A comprehensive etymological dictionary of the English language, , Amsterdam, London, Elsevier Publishing Company, , 1967, 1st edition, 88

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