Strigolactone regulates anthocyanin accumulation, acid phosphatases production and plant growth under low phosphate condition in Arabidopsis

PLoS One. 2015 Mar 20;10(3):e0119724. doi: 10.1371/journal.pone.0119724. eCollection 2015.

Abstract

Phosphate is an essential macronutrient in plant growth and development; however, the concentration of inorganic phosphate (Pi) in soil is often suboptimal for crop performance. Accordingly, plants have developed physiological strategies to adapt to low Pi availability. Here, we report that typical Pi starvation responses in Arabidopsis are partially dependent on the strigolactone (SL) signaling pathway. SL treatment induced root hair elongation, anthocyanin accumulation, activation of acid phosphatase, and reduced plant weight, which are characteristic responses to phosphate starvation. Furthermore, the expression profile of SL-response genes correlated with the expression of genes induced by Pi starvation. These results suggest a potential overlap between SL signaling and Pi starvation signaling pathways in plants.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acid Phosphatase / metabolism*
  • Anthocyanins / metabolism*
  • Arabidopsis / physiology*
  • Gene Expression Regulation, Plant
  • Lactones / metabolism*
  • Metals / metabolism
  • Phosphates / metabolism*
  • Plant Roots

Substances

  • Anthocyanins
  • Lactones
  • Metals
  • Phosphates
  • strigol
  • Acid Phosphatase

Grants and funding

This work was supported in part by grants from the Core Research for Evolutional Science and Technology (CREST) (T.A.), the Kato Memorial Bioscience Foundation (S.I.) and MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2013–2017 (S1311017). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.