J Integr Plant Biol. ›› 2016, Vol. 58 ›› Issue (3): 203-212.DOI: 10.1111/jipb.12454

• Invited Expert Reviews • Previous Articles     Next Articles

Fine-tuning by strigolactones of root response to low phosphate

Yoram Kapulnik and Hinanit Koltai*   

  1. Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan 50250, Israel
  • Received:2015-11-12 Accepted:2015-12-09 Published:2016-03-18
  • About author:*Correspondence: E-mail: hkoltai@agri.gov.il

Abstract:

Strigolactones are plant hormones that regulate the development of different plant parts. In the shoot, they regulate axillary bud outgrowth and in the root, root architecture and root-hair length and density. Strigolactones are also involved with communication in the rhizosphere, including enhancement of hyphal branching of arbuscular mycorrhizal fungi. Here we present the role and activity of strigolactones under conditions of phosphate deprivation. Under these conditions, their levels of biosynthesis and exudation increase, leading to changes in shoot and root development. At least for the latter, these changes are likely to be associated with alterations in auxin transport and sensitivity. On the other hand, strigolactones may positively affect plant–mycorrhiza interactions and thereby promote phosphate acquisition by the plant. Strigolactones may be a way for plants to fine-tune their growth pattern under phosphate deprivation.

Key words: Arabidopsis, arbuscular mycorrhizal fungi, phosphate, root development, strigolactones

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22