Results 21 to 30 of about 99,408 (270)

Functional Sieve Element Protoplasts

open access: yesPlant Physiology, 2007
Sieve element (SE) protoplasts were liberated by exposing excised phloem strands of Vicia faba to cell wall-degrading enzyme mixtures. Two types of SE protoplasts were found: simple protoplasts with forisome inclusions and composite twin protoplasts-two protoplasts intermitted by a sieve plate-of which one protoplast often includes a forisome ...
Jens B, Hafke   +3 more
openaire   +3 more sources

Ultrastructural changes in aster yellows phytoplasma affected Limonium sinuatum Mill. plants.I Pathology of conducting tissues

open access: yesActa Societatis Botanicorum Poloniae, 2014
Changes in anatomy and cytology of conducting tissues of Limonium sinuatum Mill. plants affected by aster yellows phytoplasma were investigated. In the phloem tissues of affected plants stem necrosis takes place.
Anna Rudzińska-Langwald   +1 more
doaj   +1 more source

Sieve Plate Pores in the Phloem and the Unknowns of Their Formation

open access: yesPlants, 2019
Sieve pores of the sieve plates connect neighboring sieve elements to form the conducting sieve tubes of the phloem. Sieve pores are critical for phloem function.
Lothar Kalmbach, Ykä Helariutta
doaj   +1 more source

Think outside the sieve element! [PDF]

open access: yesPlant, Cell & Environment, 2016
This article comments on: Allocation, stress tolerance and carbon transport in plants: how does phloem physiology affect plant ecology?
Michael, Knoblauch, Winfried S, Peters
openaire   +2 more sources

Identification of new proteins in mature sieve elements [PDF]

open access: yesPhysiologia Plantarum, 2022
AbstractThe phloem enables vascular plants to transport photoassimilates from source tissues to heterotrophic sink tissues. In the phloem, unbroken strings of enucleated sieve elements, which lose the majority of their cellular contents upon maturation, provide a low resistance path for mass flow. The protein machinery in mature sieve elements performs
Niels Christian Sanden, Alexander Schulz
openaire   +3 more sources

A mutation in amino acid permease AAP6 reduces the amino acid content of the Arabidopsis sieve elements but leaves aphid herbivores unaffected [PDF]

open access: yes, 2010
The aim of this study was to investigate the role of the amino acid permease gene AAP6 in regulating phloem amino acid composition and then to determine the effects of this altered diet on aphid performance.
Bale, J. S. (Jeffrey S.)   +6 more
core   +1 more source

Phytoplasma-Triggered Ca2+ Influx Is Involved in Sieve-Tube Blockage

open access: yesMolecular Plant-Microbe Interactions, 2013
Phytoplasmas are obligate, phloem-restricted phytopathogens that are disseminated by phloem-sap-sucking insects. Phytoplasma infection severely impairs assimilate translocation in host plants and might be responsible for massive changes in phloem ...
Rita Musetti   +6 more
doaj   +1 more source

The internal description of a causal set: What the universe looks like from the inside [PDF]

open access: yes, 1999
We describe an algebraic way to code the causal information of a discrete spacetime. The causal set C is transformed to a description in terms of the causal pasts of the events in C.
Markopoulou, Fotini
core   +2 more sources

Screening Mechanism and Properties of a Cantilevered Vibrating Sieve for Particles Processing

open access: yesApplied Sciences, 2019
Screening of fine wet particles or near-aperture particles by traditional screen devices is often not quite effective for sieve plugging. Different from traditional rigid regular mesh sieves, a cantilevered vibrating sieve (CVS) with open screen holes ...
Liping Peng   +5 more
doaj   +1 more source

Live imaging of companion cells and sieve elements in Arabidopsis leaves.

open access: yesPLoS ONE, 2015
The phloem is a complex tissue composed of highly specialized cells with unique subcellular structures and a compact organization that is challenging to study in vivo at cellular resolution.
Thibaud Cayla   +7 more
doaj   +1 more source

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