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Conditioning plants for arbuscular mycorrhizal symbiosis through DWARF14-LIKE signalling.

Accepted version
Peer-reviewed

Type

Article

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Authors

Hull, Raphaella 
Choi, Jeongmin 

Abstract

The evolutionarily ancient α/β hydrolase DWARF14-LIKE (D14L) is indispensable for the perception of beneficial arbuscular mycorrhizal (AM) fungi in the rhizosphere, and for a range of developmental processes. Variants of D14L recognise natural strigolactones and the smoke constituent karrikin, both classified as butenolides, and additional unknown ligand(s), critical for symbiosis and development. Recent advances in the understanding of downstream effects of D14L signalling include biochemical evidence for the degradation of the repressor SMAX1. Indeed, genetic removal of rice SMAX1 leads to the de-repression of symbiosis programmes and to the simultaneous increase in strigolactone production. As strigolactones are key to attraction of the fungus in the rhizosphere, the D14L signalling pathway appears to coordinate fungal stimulation and root symbiotic competency. Here, we discuss the possible integrative roles of D14L signalling in conditioning plants for AM symbiosis.

Description

Keywords

Alpha-beta hydrolase receptors, Arbuscular mycorrhizal symbiosis, Gibberellic acid, Strigolactone and karrikin, Mycorrhizae, Oryza, Plant Roots, Signal Transduction, Symbiosis

Journal Title

Curr Opin Plant Biol

Conference Name

Journal ISSN

1369-5266
1879-0356

Volume Title

62

Publisher

Elsevier BV

Rights

All rights reserved
Sponsorship
Bill & Melinda Gates Foundation (OPP1172165)
Bill & Melinda Gates Foundation