Evidence map›Paper›PMID 16263933›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2005

Targeted down-regulation of cytochrome P450 enzymes for forage quality improvement in alfalfa (Medicago sativa L.).

M S Srinivasa Reddy, Fang Chen, Gail Shadle, Lisa Jackson, Hugh Aljoe, Richard A Dixon

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed
3.9field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

113 citing papers in PubMed, 360 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Advances in basic biology of alfalfa (Horticulture research · 2025
    Article
  5. Forage Crop Research in the Modern Age.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Mutating alfalfaFrontiers in plant science · 2024
    Article
  13. Article
  14. Article
  15. Pinoresinol rescues developmental phenotypes of Arabidopsis phenylpropanoid mutants overexpressingProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  16. Lignin, the Lignification Process, and Advanced, Lignin-Based Materials.International journal of molecular sciences · 2023
    Review
  17. Systematic approaches to C-lignin engineering in Medicago truncatula.Biotechnology for biofuels and bioproducts · 2023
    Article
  18. Evaluation of Rumen Degradation Kinetics of Low-Lignin Alfalfa 'Hi-GestAnimals : an open access journal from MDPI · 2023
    Article
  19. Article
  20. Article

53 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

M S Srinivasa ReddyPlant Biology Division and Agriculture Division, Samuel Roberts Noble Foundation, Ardmore, OK 73401, USA.
Fang Chen
Gail Shadle
Lisa Jackson
Hugh Aljoe
Richard A Dixon
Noble Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Improving the digestibility of forages provides a means to enhance animal performance and protect the environment against excessive animal waste. Increased lignin content during maturity, and corresponding changes in lignin composition, correlate with decreased digestibility of forages. These relationships have yet to be investigated in isogenic systems. By targeting three specific cytochrome P450 enzymes of the lignin pathway for antisense down-regulation, we generated transgenic alfalfa lines with a range of differences in lignin content and composition. There was a strong negative relationship between lignin content and rumen digestibility, but no relationship between lignin composition and digestibility, in these transgenic lines. Models for genetic manipulation of forage digestibility based on the changes in lignin composition that increase paper-pulping efficiency in trees are therefore invalid. Down-regulation of 4-coumarate 3-hydroxylase provided the largest improvements in digestibility yet seen in a forage crop.

Indexed as

Down-RegulationAnimal FeedBase SequenceCytochrome P-450 Enzyme SystemDNA PrimersLigninMedicago sativaMolecular Sequence DataPhenotypePlants, Genetically ModifiedPlasmidsTransformation, GeneticCytochrome P-450 Enzyme SystemDNA PrimersLignin

Identifiers

PMID16263933
PMCPMC1283808
OpenAlexW2144423170

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.