CC-type glutaredoxins mediate plant response and signaling under nitrate starvation in Arabidopsis

Ji Yul Jung, Ji Hoon Ahn, Daniel P. Schachtman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: Nitrogen is an essential nutrient in plants. Despite the importance of nitrogen for plant growth and agricultural productivity, signal transduction pathways in response to nitrate starvation have not been fully elucidated in plants. Results: Gene expression analysis and ectopic expression were used to discover that many CC-type glutaredoxins (ROXYs) are differentially expressed in response to nitrate deprivation. A gain-of-function approach showed that ROXYs may play a role in nutrient sensing through the regulation of chlorophyll content, root hair growth, and transcription of nitrate-related genes such as NRT2.1 under low or high nitrate conditions. Reactive oxygen species (ROS) were produced in plant roots under nitrate starvation and H2O2 treatment differentially regulated the expression of the ROXYs, suggesting the involvement of ROS in signaling pathways under nitrate deficiency. Conclusion: This work adds to what is known about nitrogen sensing and signaling through the findings that the ROXYs and ROS are likely to be involved in the nitrate deprivation signaling pathway.

Original languageEnglish
Article number281
JournalBMC Plant Biology
Volume18
Issue number1
DOIs
Publication statusPublished - 2018 Nov 13

Fingerprint

starvation
plant response
nitrates
Arabidopsis
reactive oxygen species
nitrogen
nutrients
root hairs
signal transduction
transcription (genetics)
plant growth
chlorophyll
gene expression
genes

Keywords

  • Glutaredoxin
  • Nitrate
  • ROS
  • ROXY
  • Signaling
  • Starvation

ASJC Scopus subject areas

  • Plant Science

Cite this

CC-type glutaredoxins mediate plant response and signaling under nitrate starvation in Arabidopsis. / Jung, Ji Yul; Ahn, Ji Hoon; Schachtman, Daniel P.

In: BMC Plant Biology, Vol. 18, No. 1, 281, 13.11.2018.

Research output: Contribution to journalArticle

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