Sentences with word «xylem»

Beetle attacks certainly do affect plant water status — by both fungal disruption of xylem water flow, and loss of some water via resin solution exudation, which is obvious when you look at any tree under attack — unless that tree is so dehydrated already that it has so little water to exude.

In hardwoods, water moves throughout the tree in xylem cells called vessels, which are lined up end - to - end and have large openings in their ends.

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

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.

Also, I had been told repeatedly that the water in xylem tubes is under tension — which sounded like pulling, not pushing, to me.

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

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

The fossils reveal that, unlike modern trees with a single shaft, cladoxylopsids had multiple xylem columns spaced around the perimeter of a hollow trunk.

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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.

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

Investigators at Australian National University led by Michael Djordevic developed a mass spectrometry and bioinformatics strategy to identify the secreted peptidome from the roots and xylem sap of Medicago truncatula, a model plant organism for legume biology.

Around the edges ran thick, vertical strands containing xylem, the tubelike structures that carry water through many plants.

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

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.

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

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

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

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

A network of crisscrossing strands connected the vertical xylem — much like a chain - link fence spreads from pole to pole — and soft tissue filled the spaces between all these strands.

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.

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.

WITH its bleepy sound effects and cheery music, Xylem draws me into the puzzle without giving away its secret.

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

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].

What does xylem tissue carry?

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.

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».

Vascular plants have lignified tissue and specialized structures termed xylem and phloem, which transport water, minerals, and nutrients upward from the roots and return sugars and other photosynthetic products.

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

As photosynthetic area of the crown (and presumably root area as well) increases in favorable periods there will be more resources available to produce wider «rings» (or more properly xylem layers).

Soil water exploration through root proliferation, xylem refilling (generally assumed to involve some C cost, Sala et al. 2012) and osmoregulation then depends on C reserves.

An active transport of C was probably maintained throughout the dry season and in all trees studied here, as indicated by the active water transport in the phloem - coupled xylem (Figure 2) and the rising NSC concentrations in roots during August (Figure 5).

This appears to be a photomicrograph of a cross-section of the wood (showing the cellular structure of the secondary xylem).

This is usually accompanied by an impaired ability to transport water to the leaves via the outer xylem (the sapwood), courtesy of blue stain fungi (e.g. Grosmannia or Ceratocystis spp.) carried and introduced by the beetles.

Other speakers include Ylva Lindquist, Vice President & General Counsel, EMEIA, Xylem Inc, Håkan Broman, General Counsel and Executive Vice President, NCC Group, Jonas Jeppsson, Chief Legal Officer at Widespace AB, and Peter Danowsky, Partner, Danowsky & Partners.

Xylem seeks to hire a Service / Field Technician to perform a wide range of electrical (120 to 460 volts) and mechanical duties related to on - site field servicing of Flygt and Godwin products utilizing...

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.

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

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.

The study, led by the University of Edinburgh, shows that during severe drought, air bubbles can enter the sap of trees and break columns of water inside the tissues that transport water and nutrients — known as xylem.

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

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

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.

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