Sentences with phrase «many xylem»

• Valor Water Analytics, a big data company providing financial and conservation solutions for water utilities, has been acquired by Xylem (NYSE: XYL).

Once it latches onto a suitable host, it finds its way to the root system and travels up to the xylem vessels - a plant's main water transporters.

It is produced from xylem sap originating from several species of maple trees.

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 syrup is a dark sap from the xylem of maple trees.

The xylem is the centre yellow part and phloem the blue straws.

Xylem cells form a continuous tube from the leaf to roots which acts like a drinking straw giving a flow of water from root to leaf.

It then moves into the xylem vessel which is the tube that carries the water up the plant.

Transpiration is when water on the surface leaf cells evaporates and then diffuses out of the leaf, this draws water out of the xylem cells inside the leaf to replace the evaporated water.

The xylem transports water and minerals from the roots to the leaves while the phloem moves food substances from leaves to the rest of the plant.

Grand designs: xylem cells could help us make stronger buildings (Image: Dr David Furness, Keele University / SPL / Getty Images)

In the lab, they studied plant xylem vessels — xylem cells make the tubes that transport water from the roots to the top of a tree.

(Remember, the xylem is a continuous water column that extends from the leaf to the roots.)

At some point during this struggle, air bubbles can be pulled up into the xylem causing embolisms (analogous to those to those that form in the human vascular system).

When plants absorb water through their roots, they use their xylem to transport water and nutrients through the plant.

The xylem (the scientific name for wood) is the non-living tissue of a plant that transports water and nutrients from the soil to the stems and leaves.

In a coastal redwood, though, the xylem is mostly made up of tracheids that move water slowly to the top of the tree.

Both vessel and tracheid cells allow water and nutrients to move up the tree, whereas specialized ray cells pass water and food horizontally across the xylem.

This correlation occurs as a result of the cohesive nature of water along the sides of the straw (the sides of the xylem).

The trees make use of an abundance of living cells around their xylem to conserve and redistribute water in drought conditions.

Like the vascular system in people, the xylem and phloem tissues extend throughout the plant.

Xylem tissue is found in all growth rings (wood) of the tree.

Each typical xylem vessel may only be several microns in diameter.

In contrast, the xylem of conifers consists of enclosed cells called tracheids.

The xylem is also composed of elongated cells.

«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.»

This sapwood consists of conductive tissue called xylem (made up of small pipe - like cells).

This unique situation comes about because the xylem tissue in oaks has very large vessels; they can carry a lot of water quickly, but can also be easily disrupted by freezing and air pockets.

A single tree will have many xylem tissues, or elements, extending up through the tree.

Water and other materials necessary for biological activity in trees are transported throughout the stem and branches in thin, hollow tubes in the xylem, or wood tissue.

A layer of live «parenchyma» cells that surrounds the xylem helps tropical trees by storing water and mediating the osmotic pressure so that water can be redistributed to where it is most needed.

There are major differences between hardwoods (oak, ash, maple) and conifers (redwood, pine, spruce, fir) in the structure of xylem.

Because of the narrow diameter of the xylem tubing, the degree of water tension, (vacuum) required to drive water up through the xylem can be easily attained through normal transpiration rates that often occur in leaves.»

These two features allow water to be pulled like a rubber band up small capillary tubes like xylem cells.

But in cladoxylopsids, «each strand of xylem had its own growth rings,» says paleobotanist Christopher M. Berry of Cardiff University in Wales, who co-authored the study with colleagues at the Chinese Academy of Sciences in Nanjing and Binghamton University, S.U.N.Y.

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.

[The bacterium] lives in the xylem, so an infected tree could have a healthy limb, and if we test the wrong one, we may allow the tree to live and continue to be a host.

Typically, when plants become extremely dehydrated and water pressure drops, air bubbles can develop in the xylem, tissue that carries water up from the roots (SN: 05/14/16, p. 32).

The pores also limit cavitation, a process by which air bubbles can grow and spread in xylem, eventually killing a tree.

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.

The wood is composed of xylem, porous tissue that conducts sap from a tree's roots to its crown through a system of vessels and pores.

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.

The xylem's tiny pores can trap bubbles, preventing them from spreading in the wood.

When water is scarce, the trees have to pull much harder on the water in the xylem, which allows air bubbles to infiltrate the pipes.

Water inches up the xylem to replace water evaporating from the leaf surface.

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.

A false - color electron microscope image showing E. coli bacteria (green) trapped over xylem pit membranes (red and blue) in the sapwood after filtration.

They say the size of the pores in sapwood — which contains xylem tissue evolved to transport sap up the length of a tree — also allows water through while blocking most types of bacteria.