Sentences with phrase «of xylem»

These include: acid hydrolysis and monosaccharide composition using gas - liquid chromatography [3], microscopic observation of xylem stem sections [4, 5], seedling growth on medium containing cell wall hydrolyzing enzymes [6] and Fourier - Transform Infrared (FT - IR) microspectroscopy [7, 8].

«We investigated whether coiling wire around the lower part of the plant stems to reduce the capacity of xylem to transport water to the shoot would result in low shoot moisture conditions and increase the sugar concentration of fruit like salt and water stresses,» the authors said.

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.

As the cladoxylopsids grew, these columns of xylem split themselves apart — most likely to supply water to the expanding plant.

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.

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.»

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

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

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.

Not exact matches

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.

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.

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.

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.

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.

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

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

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

The xylem is also composed of elongated cells.

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 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.

Modern trees add new layers of multiple xylem as they grow, creating a woody trunk with a single set of concentric rings.

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.

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.

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.

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.

Fossilized slices of a 374 - million - year - old tree reveal a hollow core surrounded by numerous bundles of woody strands called xylem (the larger black spots), with soft tissue (in gray) between.

New xylem grow in rings at the periphery of the trunk just behind the bark, adding girth so the tree can get taller.

But it also split apart the tree's xylem skeleton, which required the tree to continually repair itself, the team reports today in the Proceedings of the National Academy of Sciences.

The trunk is a single cylindrical shaft made up of hundreds of woody strands called xylem, which conduct water from the roots to the branches and leaves.

The researchers focused on the secondary cell walls in a type of plant tissue called xylem from the Arabidopsis plant's roots.

In the largest of the two fossil trunks, above the bulge, the xylem and soft tissue occupied a ring about 50 centimeters in diameter and 5 centimeters thick, with external roots making up the remainder of the 70 - centimeter - diameter tree trunk.

Solving a puzzle of plant manipulation Rather than try to isolate single genes related to secondary cell wall production, the researchers looked at the function of hundreds of transcription factors working within the root xylem's regulatory network.

Such is the case in the xylem tubes of trees.

One of five games commissioned by the agency, Xylem hides mathematical teasers inside the story of a botanist identifying flowers on a pristine island.

Both Xylem and Storm Bound analyse loops, bits of code that call for some repetitive action.

Massive, exceptionally well - preserved cladoxylopsid tree trunks found in Xinjiang, China, have revealed an interconnected web of woody strands (xylem)...

Scanning electron micrograph of the bacterium Xylella fastidiosa, causal agent of the citrus variegated chlorosis, present in the xylem vessel of infected sweet orange leaf (ca.

Morphologically, the DZ in the wild type (WT) is marked by the appearance of epidermal root hairs on the external surface of outer cell files (trichoblast) and the existence of fully differentiated xylem for internal cell files (Dolan et al, 1993; Ishikawa & Evans, 1995; Beemster et al, 2003; Verbelen et al, 2006; Zhang et al, 2010; Mähönen et al, 2014).

Her fascination for her subject is infectious, whether she is elucidating the distinction between xylem and phloem, or enthusing over the lettuce - like ruffles of a photosynthesizing sea slug.

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.

Of the three companies coming out of the ITT spinoffs (Xylem, Exelis and the ITT stub) I decided to focus my attention on Exelis in the weeks after the spinoff; it was the company who's shares traded down the most post spin and seemed the most undervalueOf the three companies coming out of the ITT spinoffs (Xylem, Exelis and the ITT stub) I decided to focus my attention on Exelis in the weeks after the spinoff; it was the company who's shares traded down the most post spin and seemed the most undervalueof the ITT spinoffs (Xylem, Exelis and the ITT stub) I decided to focus my attention on Exelis in the weeks after the spinoff; it was the company who's shares traded down the most post spin and seemed the most undervalued.

I have closed out my positions in Xylem and ITT (2 of the 3 ITT spinoff companies) to raise some cash.

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 vascular plants (or tracheophytes) are characterized by the presence of vascular tissue (xylem and phloem) for structural support and for long - distance movement of water and nutrients throughout the plant body.

Tyree, M. T. & Sperry, J. S. Do woody plants operate near the point of catastrophic xylem dysfunction caused by dynamic water stress?