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The Plant Cell
Article
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The Plant Cell
Article . 1992 . Peer-reviewed
License: http://aspb.org/publications/aspb-journals/open-articles
Data sources: Crossref
The Plant Cell
Article . 1992 . Peer-reviewed
Data sources: Crossref
The Plant Cell
Article . 1993
Data sources: Europe PubMed Central
https://dx.doi.org/10.1105/tpc...
Article
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Claim

Pumpkin phloem lectin genes are specifically expressed in companion cells.

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1992 English Publisher:Oxford University Press (OUP)Journal:The Plant Cell, volume 4, pages 1,539-1,548 (issn: 1040-4651, eissn: 1532-298X, Copyright policy )
Authors: D E, Bostwick; J M, Dannenhoffer; M I, Skaggs; R M, Lister; B A, Larkins; G A, Thompson;

doi: 10.1105/tpc.4.12.1539 , 10.2307/3869497

pmid: 1467652

pmc: PMC160240

Pumpkin phloem lectin genes are specifically expressed in companion cells.

Abstract

Pumpkin phloem exudate contains two abundant phloem proteins: PP1 is a 96-kD protein that forms polymeric filaments in vivo, and PP2 is a 48-kD dimeric lectin. Polyclonal antibodies raised against pumpkin phloem exudate were used to isolate several cDNAs corresponding to PP1 and PP2. RNA gel blot analysis indicated that PP1 is encoded by an mRNA of approximately 2500 nucleotides, whereas PP2 subunits are encoded by an mRNA of 1000 nucleotides. Sequence analysis of PP2 cDNAs revealed a 654-bp open reading frame encoding a 218-amino acid polypeptide; this polypeptide had the carbohydrate binding characteristics of a PP2 subunit. The PP2 mRNA was localized within the phloem of pumpkin hypocotyl cross-sections based on in situ hybridization of a digoxigenin-labeled antisense probe. PP2 mRNA was found within the companion cells in both the bicollateral vascular bundles and the extrafascicular phloem network.

Related Organizations
Keywords

Lectins, Molecular Sequence Data, Gene Expression, Amino Acid Sequence, DNA, RNA, Messenger, Amino Acids, Plant Lectins, Plants, In Situ Hybridization

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    influence
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
138
Top 10%
Top 10%
Top 10%
bronze