Through this network, finalists are able to connect and collaborate with each other as well with expert mentors and advisors from leading organizations, such
as Xylem Inc., Raincoat Foundation and SIWI.
The strands, known
as xylem, are responsible for conducting water from a tree's roots to its branches and leaves.
Published online this week in the Proceedings of the National Academy of Sciences, the study found that the species most resistant to drought are those that are better at withstanding stress to the water transport system — composed of internal pipes known
as xylem — that carries water from the roots to the crown.
Not exact matches
By Martin Kunz, EMEA Segment Leader, Industry with
Xylem's Applied Water Systems business Only 2.5 percent of the world's water is fresh water, and of that, only one percent is accessible
as much is trapped in glaciers and snowfields.
This correlation occurs
as a result of the cohesive nature of water along the sides of the straw (the sides of the
xylem).
«Tropical trees, compared those in temperate forests, have three times
as many living cells surrounding the
xylem that can facilitate these processes, which are not observed by the typical experiments we conduct to determine how vulnerable a plant is to droughts.»
Modern trees add new layers of multiple
xylem as they grow, creating a woody trunk with a single set of concentric rings.
As the cladoxylopsids grew, these columns of
xylem split themselves apart — most likely to supply water to the expanding plant.
Data for the study was obtained from dozens of published peer - reviewed scientific studies and the
Xylem Functional Traits Database, which contains measurements of the hydraulic safety margins for each species
as determined through laboratory experiments.
Designers interested in using sapwood
as a filtering material will also have to find ways to keep the wood damp, or to dry it while retaining the
xylem function.
Among angiosperm species, wood density emerged
as a useful predictive trait of drought survival, perhaps because trees with dense wood tend to have more armor around their
xylem.
As the contents leak out, they percolate through the youngest vessels, or «pipes», in the
xylem, the tree's internal plumbing system.
The breakup, structured
as a spin - off of two companies,
Xylem (XYL) and Exelis (XLS), was announced in the 1st Quarter of 2011 and consummated this past October 31.
Xylem never interested me that much, perhaps because management was seemingly trying to position the company
as a «story stock»: «Water, the business of the future».
As of September 30, 2016,
Xylem Inc. represented 2.7 % of the Parnassus Core Equity Fund and 2.9 % of the Parnassus Mid Cap Fund TNA.
The plants referred to
as «ferns and fern allies» are plants that have vascular tissue (
xylem and phloem for conducting water and sugars), but do not produce fruits and seeds.