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companion cell

Overview page. Subjects: Plant Sciences and Forestry.

Modified parenchyma, linked to sieve cells by plasmodesmata. Unlike sieve cells, companion cells are nucleated and have many mitochondria. Companion cells may regulate translocation.

See overview in Oxford Index

companion cell

Overview page. Subjects: Plant Sciences and Forestry.

Modified parenchyma, linked to sieve cells by plasmodesmata. Unlike sieve cells, companion cells are nucleated and have many mitochondria. Companion cells may regulate translocation.

See overview in Oxford Index

companion cells

Michael Allaby.

in A Dictionary of Plant Sciences

January 2012; p ublished online April 2013 .

Reference Entry. Subjects: Plant Sciences and Forestry. 26 words.

Modified parenchyma, linked to sieve cells by plasmodesmata. Unlike sieve cells, companion cells are nucleated and have many mitochondria. Companion cells may regulate ...

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companion cells

Edited by Michael Allaby.

in A Dictionary of Plant Sciences

January 2006; p ublished online January 2006 .

Reference Entry. Subjects: Plant Sciences and Forestry. 26 words.

Modified parenchyma, linked to sieve cells by plasmodesmata. Unlike sieve cells, companion cells are nucleated and have many

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companion cells

Edited by Michael Allaby.

in A Dictionary of Plant Sciences

March 2019; p ublished online March 2019 .

Reference Entry. Subjects: Plant Sciences and Forestry; Plant Physiology. 31 words.

Modified *parenchyma, linked to *sieve cells by *plasmodesmata. Unlike sieve cells, companion cells are nucleated and have many ...

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companion cell

Elizabeth Martin and Robert Hine.

in A Dictionary of Biology

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Biological Sciences. 69 words.

A type of cell found within the phloem of flowering plants. Each companion cell is usually closely associated with a

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companion cell

Edited by Elizabeth Martin and Robert Hine.

in A Dictionary of Biology

June 2016; p ublished online September 2015 .

Reference Entry. Subjects: Biological Sciences. 73 words.

A type of cell found within the *phloem of flowering plants. Each companion cell is usually closely associated with a ...

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companion cell

Edited by Robert Hine.

in A Dictionary of Biology

April 2019; p ublished online April 2019 .

Reference Entry. Subjects: Biological Sciences. 105 words.

A type of cell found within the *phloem of flowering plants. Each companion cell is usually closely associated with a ...

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Differential Distribution of Proteins Expressed in Companion Cells in the Sieve Element-Companion Cell Complex of Rice Plants

Akari Fukuda, Syu Fujimaki, Tomoko Mori, Nobuo Suzui, Keiki Ishiyama, Toshihiko Hayakawa, Tomoyuki Yamaya, Toru Fujiwara, Tadakatsu Yoneyama and Hiroaki Hayashi.

in Plant and Cell Physiology

November 2005; p ublished online November 2005 .

Journal Article. Subjects: Biochemistry; Molecular and Cell Biology; Plant Sciences and Forestry. 5850 words.

Sieve tubes are comprised of sieve elements, enucleated cells that are incapable of RNA and protein synthesis. The proteins in sieve elements are supplied from the neighboring companion...

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Evidence for functional heterogeneity of sieve element–companion cell complexes in minor vein phloem of Alonsoa meridionalis

Olga V. Voitsekhovskaja, Elena L. Rudashevskaya, Kirill N. Demchenko, Marina V. Pakhomova, Denis R. Batashev, Yuri V. Gamalei, Gertrud Lohaus and Katharina Pawlowski.

in Journal of Experimental Botany

April 2009; p ublished online March 2009 .

Journal Article. Subjects: Plant Sciences and Forestry. 7130 words.

Two modes of phloem loading have been proposed, apoplastic and symplastic, depending on the structure of sieve element–companion cell complexes (SE–CCCs) in minor vein phloem. Species are...

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Interaction between sieve element and companion cell and the consequences for photoassimilate distribution. Two structural hardware frames with associated physiological software packages in dicotyledons?

Aart J.E. van Bel.

in Journal of Experimental Botany

August 1996; p ublished online August 1996 .

Journal Article. Subjects: Plant Sciences and Forestry. 0 words.

The unique properties of the sieve element/companion cell complex (SE/CC complex) are based on the concerted action of SE and CC. A prominent role in this interaction is played by the...

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Plasmodesmal companion cell-mesophyll communication in the control over carbon metabolism and phloem transport: insights gained from viral movement proteins

William J. Lucas, Suchandra Balachandran, Jun Park and Shmuel Wolf.

in Journal of Experimental Botany

August 1996; p ublished online August 1996 .

Journal Article. Subjects: Plant Sciences and Forestry. 0 words.

Many plant viruses encode for a protein(s) that is essential for movement from the site of replication to surrounding, uninfected cells. These proteins have the ability to interact with...

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FE Controls the Transcription of Downstream Flowering Regulators Through Two Distinct Mechanisms in Leaf Phloem Companion Cells

Mio Shibuta and Mitsutomo Abe.

in Plant and Cell Physiology

November 2017; p ublished online September 2017 .

Journal Article. Subjects: Molecular Biology and Genetics; Biotechnology; Biochemistry; Bioinformatics and Computational Biology; Molecular and Cell Biology; Plant Sciences and Forestry; Plant Physiology. 5886 words.

Abstract

In the facultative long-day plant Arabidopsis thaliana, FLOWERING LOCUS T (FT), encoding the mobile hormone florigen, plays an essential role in...

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Cucurbit phloem serpins are graft-transmissible and appear to be resistant to turnover in the sieve element–companion cell complex

Mette la Cour Petersen, Jørn Hejgaard, Gary A. Thompson and Alexander Schulz.

in Journal of Experimental Botany

December 2005; p ublished online October 2005 .

Journal Article. Subjects: Plant Sciences and Forestry. 6220 words.

Serpins are unique inhibitors of serine proteases that are located in various plant tissues and organs. An orthologue of the pumpkin (Cucurbita maxima) phloem serpin CmPS-1 was amplified...

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Identification of a cis-Regulatory Element that Acts in Companion Cell-Specific Expression of AtMT2B Promoter through the use of Brassica Vasculature and Gene-Gun-Mediated Transient Assay

Ryo Tsuwamoto and Takeo Harada.

in Plant and Cell Physiology

January 2010; p ublished online November 2009 .

Journal Article. Subjects: Biochemistry; Molecular and Cell Biology; Plant Sciences and Forestry. 5628 words.

The molecular basis underlying the development, maintenance and function of companion cells in plants is largely unknown. The identification of several genes expressed specifically in...

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Clinical usefulness of PI3K/Akt/mTOR genotyping in companion with other clinical variables in metastatic renal cell carcinoma patients treated with everolimus in the second and subsequent lines

L. Bodnar, R. Stec, S. Cierniak, A. Synowiec, G. Wcisło, M. Jesiotr, R. Koktysz, W. Kozłowski and C. Szczylik.

in Annals of Oncology

July 2015; p ublished online May 2015 .

Journal Article. Subjects: Medical Oncology. 3554 words.

Background

The aim of this study was to search for predictive and prognostic factors in patients with metastatic renal cell carcinoma (mRCC) treated with...

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rictor

Overview page. Subjects: Medicine and Health.

A binding partner of mTOR (rapamycin-insensitive companion of mTOR, 1708 aa) that forms a complex which integrates nutrient- and growth factor-derived signals to regulate cell growth. It...

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phloem

Overview page. Subjects: Biological Sciences.

The main food‐conducting tissue of plants, via which nutrients and photosynthate are conveyed between different sites. Phloem comprises two types of cells: sieve‐tube elements, which are...

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phloem loading

Overview page. Subjects: Biological Sciences.

The processes by which the products of photosynthesis enter the phloem for transport to other tissues within the plant. The carbon fixed by photosynthesis is transported in phloem primarily...

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sieve element

Overview page. Subjects: Biological Sciences.

A type of plant cell occurring within the phloem. Sieve elements combine to form a series of tubes (sieve tubes) connecting the leaves, shoots, and roots in a fine network. Food materials...

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