Abstract

To determine if damage to foliage by biotic agents, including arthropods, fungi, bacteria and viral pathogens, universally downregulates the expression of genes involved in photosynthesis, we compared transcriptome data from microarray experiments after twenty two different forms of biotic damage on eight different plant species. Transcript levels of photosynthesis light reaction, carbon reduction cycle and pigment synthesis genes decreased regardless of the type of biotic attack. The corresponding upregulation of genes coding for the synthesis of jasmonic acid and those involved in the responses to salicylic acid and ethylene suggest that the downregulation of photosynthesis-related genes was part of a defence response. Analysis of the sub-cellular targeting of co-expressed gene clusters revealed that the transcript levels of 84% of the genes that carry a chloroplast targeting peptide sequence decreased. The majority of these downregulated genes shared common regulatory elements, such as G-box (CACGTG), T-box (ACTTTG) and SORLIP (GCCAC) motifs. Strong convergence in the response of transcription suggests that the universal downregulation of photosynthesis-related gene expression is an adaptive response to biotic attack. We hypothesize that slow turnover of many photosynthetic proteins allows plants to invest resources in immediate defence needs without debilitating near term losses in photosynthetic capacity.

Original languageEnglish (US)
Pages (from-to)1597-1613
Number of pages17
JournalPlant, Cell and Environment
Volume33
Issue number10
DOIs
StatePublished - Oct 1 2010

Fingerprint

Photosynthesis
biotic stress
Down-Regulation
photosynthesis
Genes
genes
Gene Expression
Carbon Cycle
gene expression
Plant Proteins
synthesis
Salicylic Acid
Arthropods
Chloroplasts
jasmonic acid
Multigene Family
plant proteins
Transcriptome
multigene family
salicylic acid

Keywords

  • Chloroplast
  • Cis-regulatory elements
  • Defence
  • Gene expression
  • Microarray

ASJC Scopus subject areas

  • Physiology
  • Plant Science

Cite this

Biotic stress globally downregulates photosynthesis genes. / Bilgin, Damla D.; Zavala, Jorge A.; Zhu, Jin; Clough, Steven J.; Ort, Donald R.; Delucia, Evan H.

In: Plant, Cell and Environment, Vol. 33, No. 10, 01.10.2010, p. 1597-1613.

Research output: Contribution to journalArticle

Bilgin, Damla D. ; Zavala, Jorge A. ; Zhu, Jin ; Clough, Steven J. ; Ort, Donald R. ; Delucia, Evan H. / Biotic stress globally downregulates photosynthesis genes. In: Plant, Cell and Environment. 2010 ; Vol. 33, No. 10. pp. 1597-1613.
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