Definitions
from The Century Dictionary.
- noun In botany, the first-formed elements of the xylem of a vascular bundle.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The first
xylem to form in aplant .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
Help support Wordnik (and make this page ad-free) by adopting the word protoxylem.
Examples
-
The researchers conducted the study in the root of Arabidopsis, a small flowering plant related to cabbage, where they took a closer look at the development of two types of root cells - protoxylem and metaxylem.
innovations-report 2010
-
High dosage of these messenger RNA molecules lead cells to become metaxylem, whereas low dosage leads to protoxylem.
innovations-report 2010
-
Using a combination of molecular and cellular techniques including high-resolution imaging, they discovered a complex sequence of events at the molecular level that creates the distinction between protoxylem and metaxylem cells.
innovations-report 2010
-
Since microRNA 165/6 moves out from its source cells and dissolves their target messenger RNAs, in areas where there are high levels of microRNA 165/6, nearby cells are more likely to become protoxylem.
innovations-report 2010
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.