Evidence map›Paper›PMID 8704142›Full record

ArticlePlant molecular biology1996

Expression of the Volvox gene encoding nitrate reductase: mutation-dependent activation of cryptic splice sites and intron-enhanced gene expression from a cDNA.

H Gruber, S H Kirzinger, R Schmitt

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Article in Plant molecular biology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

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0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. Spatiotemporal distribution of the glycoprotein pherophorin II reveals stochastic geometry of the growing ECM ofProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Functional analysis of regA paralog rlsD in Volvox carteri.The Plant journal : for cell and molecular biology · 2024
    Article
  4. Article
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  6. Article
  7. Review
  8. Article
  9. Article
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  12. Article
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  18. Article
  19. Article
  20. Gene replacement by homologous recombination in the multicellular green alga Volvox carteri.Proceedings of the National Academy of Sciences of the United States of America · 1997
    Article
4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

3 authors.

H GruberLehrstuhl für Genetik, Universität Regensburg, Germany.
S H Kirzinger
R Schmitt

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Use of the nitrate reductase encoding gene (nitA) as selection marker has facilitated the successful nuclear transformation of Volvox carteri. The Volvox nitA gene contains 10 introns. A stable nitA mutation in the Volvox recipient strain 153-81 resides in a G-to-A transition of the first nucleotide in the 5' splice site of nitA intron 2. This mutation resulted in at least three non-functional splice variants, namely: (1) intron 2 was not spliced at all; (2) a cryptic 5' splice site 60 nt upstream or (3) a cryptic 5' splice site 16 nt downstream of the mutation were activated and used for splicing. When we used nitA cDNA (pVcNR13) for transformation of V. carteri 153-81, a low efficiency of about 5 x 10(-5) transformants per reproductive cell was observed. Re-integration of either intron 1 (pVcNR15) or introns 9 and 10 (pVcNR16) in the transforming cDNA increased transformation rates to 5 x 10(-4). In parallel, pVcNR15-transformed Volvox exhibited growth rates that were 100-fold increased over the pVcNR13-transformed alga. This intron-enhancement of nitA gene expression appears to be associated with post-transcriptional processing and 'channelling' of the message. These data suggest an important role of splicing for gene expression in V. carteri.

Indexed as

Gene Expression Regulation, EnzymologicGene Expression Regulation, PlantIntronsBase SequenceChlorophytaCloning, MolecularDNA, ComplementaryMolecular Sequence DataNitrate ReductaseNitrate ReductasesRNA SplicingTransformation, GeneticDNA, ComplementaryNitrate ReductaseNitrate Reductases

Identifiers

PMID8704142

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.