Results 11 to 20 of about 16,942 (255)

Non-dispersive phloem-protein bodies (NPBs) of Populus trichocarpa consist of a SEOR protein and do not respond to cell wounding and Ca2+ [PDF]

open access: yesPeerJ, 2018
Differentiating sieve elements in the phloem of angiosperms produce abundant phloem-specific proteins before their protein synthesis machinery is degraded.
Daniel L. Mullendore   +6 more
doaj   +2 more sources

Numerical Modeling of Thermal Behavior during Lunar Soil Drilling

open access: yesAerospace, 2023
This paper presents a detailed thermal simulation analysis of the drilling process for icy soil in the lunar polar region. The aim is to investigate the temperature changes that occur in the debris removal area during the drilling process. We developed a
Deming Zhao   +4 more
doaj   +1 more source

The Interplay between Enucleated Sieve Elements and Companion Cells

open access: yesPlants, 2023
In order to adapt to sessile life and terrestrial environments, vascular plants have developed highly sophisticated cells to transport photosynthetic products and developmental signals.
Angel J. Matilla
doaj   +1 more source

Local auxin competition explains fragmented differentiation patterns

open access: yesNature Communications, 2020
Sieve element differentiation in Arabidopsis roots requires two antagonistic regulators of auxin efflux, BRX and PAX. Here the authors show that together they coordinate sieve element formation by preventing cell fate bistability emerging from AUX1 ...
Bernard Moret   +4 more
doaj   +1 more source

Design and Motion Process of Air-Sieve Castor Cleaning Device Based on Discrete Element Method

open access: yesAgriculture, 2023
In order to improve the cleaning effect of the castor shelling mixture, an air-sieve castor cleaning device was developed. The structure of the cleaning device was optimized by experiment and simulation based on the discrete element method.
Junming Hou   +7 more
doaj   +1 more source

Phytoplasma infection in tomato is associated with re-organization of plasma membrane, ER stacks and actin filaments in sieve elements

open access: yesFrontiers in Plant Science, 2015
Phytoplasmas, biotrophic wall-less prokaryotes, only reside in sieve elements of their host plants. The essentials of the intimate interaction between phytoplasmas and their hosts are poorly understood, which calls for research on potential ...
Stefanie Vera Buxa   +8 more
doaj   +1 more source

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

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

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

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

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