Ecological nitrogen limitation shapes the DNA composition of plant genomes

Claudia Acquisti, James Elser, Sudhir Kumar

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Phenotypes and behaviors respond to resource constraints via adaptation, but the influence of ecological limitations on the composition of eukaryotic genomes is still unclear. We trace connections between plant ecology and genomes through their elemental composition. Inorganic sources of nitrogen (N) are severely limiting to plants in natural ecosystems. This constraint would favor the use of N-poor nucleotides in plant genomes. We show that the transcribed segments of undomesticated plant genomes are the most N poor, with genomes and proteomes bearing signatures of N limitation. Consistent with the predictions of natural selection for N conservation, the precursors of transcriptome show the greatest deviations from Chargaff's second parity rule. Furthermore, crops show higher N contents than undomesticated plants, likely due to the relaxation of natural selection owing to the use of N-rich fertilizers. These findings indicate a fundamental role of N limitation in the evolution of plant genomes, and they link the genomes with the ecosystem context within which biota evolve.

Original languageEnglish (US)
Pages (from-to)953-956
Number of pages4
JournalMolecular Biology and Evolution
Volume26
Issue number5
DOIs
StatePublished - May 2009

Fingerprint

Plant Genome
botanical composition
Nitrogen
genome
DNA
Genetic Selection
nitrogen
Genome
Ecosystem
Biota
natural selection
Fertilizers
Proteome
Parity
Ecology
Transcriptome
Nucleotides
plant ecology
Phenotype
ecosystems

Keywords

  • Biological stoichiometry
  • Crops
  • Nitrogen limitation
  • Plant genome

ASJC Scopus subject areas

  • Genetics
  • Molecular Biology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Ecological nitrogen limitation shapes the DNA composition of plant genomes. / Acquisti, Claudia; Elser, James; Kumar, Sudhir.

In: Molecular Biology and Evolution, Vol. 26, No. 5, 05.2009, p. 953-956.

Research output: Contribution to journalArticle

Acquisti, Claudia ; Elser, James ; Kumar, Sudhir. / Ecological nitrogen limitation shapes the DNA composition of plant genomes. In: Molecular Biology and Evolution. 2009 ; Vol. 26, No. 5. pp. 953-956.
@article{e8750f3a374f442da0c2ccca5a1b1b08,
title = "Ecological nitrogen limitation shapes the DNA composition of plant genomes",
abstract = "Phenotypes and behaviors respond to resource constraints via adaptation, but the influence of ecological limitations on the composition of eukaryotic genomes is still unclear. We trace connections between plant ecology and genomes through their elemental composition. Inorganic sources of nitrogen (N) are severely limiting to plants in natural ecosystems. This constraint would favor the use of N-poor nucleotides in plant genomes. We show that the transcribed segments of undomesticated plant genomes are the most N poor, with genomes and proteomes bearing signatures of N limitation. Consistent with the predictions of natural selection for N conservation, the precursors of transcriptome show the greatest deviations from Chargaff's second parity rule. Furthermore, crops show higher N contents than undomesticated plants, likely due to the relaxation of natural selection owing to the use of N-rich fertilizers. These findings indicate a fundamental role of N limitation in the evolution of plant genomes, and they link the genomes with the ecosystem context within which biota evolve.",
keywords = "Biological stoichiometry, Crops, Nitrogen limitation, Plant genome",
author = "Claudia Acquisti and James Elser and Sudhir Kumar",
year = "2009",
month = "5",
doi = "10.1093/molbev/msp038",
language = "English (US)",
volume = "26",
pages = "953--956",
journal = "Molecular Biology and Evolution",
issn = "0737-4038",
publisher = "Oxford University Press",
number = "5",

}

TY - JOUR

T1 - Ecological nitrogen limitation shapes the DNA composition of plant genomes

AU - Acquisti, Claudia

AU - Elser, James

AU - Kumar, Sudhir

PY - 2009/5

Y1 - 2009/5

N2 - Phenotypes and behaviors respond to resource constraints via adaptation, but the influence of ecological limitations on the composition of eukaryotic genomes is still unclear. We trace connections between plant ecology and genomes through their elemental composition. Inorganic sources of nitrogen (N) are severely limiting to plants in natural ecosystems. This constraint would favor the use of N-poor nucleotides in plant genomes. We show that the transcribed segments of undomesticated plant genomes are the most N poor, with genomes and proteomes bearing signatures of N limitation. Consistent with the predictions of natural selection for N conservation, the precursors of transcriptome show the greatest deviations from Chargaff's second parity rule. Furthermore, crops show higher N contents than undomesticated plants, likely due to the relaxation of natural selection owing to the use of N-rich fertilizers. These findings indicate a fundamental role of N limitation in the evolution of plant genomes, and they link the genomes with the ecosystem context within which biota evolve.

AB - Phenotypes and behaviors respond to resource constraints via adaptation, but the influence of ecological limitations on the composition of eukaryotic genomes is still unclear. We trace connections between plant ecology and genomes through their elemental composition. Inorganic sources of nitrogen (N) are severely limiting to plants in natural ecosystems. This constraint would favor the use of N-poor nucleotides in plant genomes. We show that the transcribed segments of undomesticated plant genomes are the most N poor, with genomes and proteomes bearing signatures of N limitation. Consistent with the predictions of natural selection for N conservation, the precursors of transcriptome show the greatest deviations from Chargaff's second parity rule. Furthermore, crops show higher N contents than undomesticated plants, likely due to the relaxation of natural selection owing to the use of N-rich fertilizers. These findings indicate a fundamental role of N limitation in the evolution of plant genomes, and they link the genomes with the ecosystem context within which biota evolve.

KW - Biological stoichiometry

KW - Crops

KW - Nitrogen limitation

KW - Plant genome

UR - http://www.scopus.com/inward/record.url?scp=65349134876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65349134876&partnerID=8YFLogxK

U2 - 10.1093/molbev/msp038

DO - 10.1093/molbev/msp038

M3 - Article

C2 - 19255140

AN - SCOPUS:65349134876

VL - 26

SP - 953

EP - 956

JO - Molecular Biology and Evolution

JF - Molecular Biology and Evolution

SN - 0737-4038

IS - 5

ER -