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The negative regulator SMAX1 controls mycorrhizal symbiosis and strigolactone biosynthesis in rice
- Source :
- Nature Communications, Vol 11, Iss 1, Pp 1-13 (2020), Nature Communications, 11:2114. Nature Publishing Group
- Publication Year :
- 2020
- Publisher :
- Nature Publishing Group, 2020.
-
Abstract
- Most plants associate with beneficial arbuscular mycorrhizal (AM) fungi that facilitate soil nutrient acquisition. Prior to contact, partner recognition triggers reciprocal genetic remodelling to enable colonisation. The plant Dwarf14-Like (D14L) receptor conditions pre-symbiotic perception of AM fungi, and also detects the smoke constituent karrikin. D14L-dependent signalling mechanisms, underpinning AM symbiosis are unknown. Here, we present the identification of a negative regulator from rice, which operates downstream of the D14L receptor, corresponding to the homologue of the Arabidopsis thaliana Suppressor of MAX2-1 (AtSMAX1) that functions in karrikin signalling. We demonstrate that rice SMAX1 is a suppressor of AM symbiosis, negatively regulating fungal colonisation and transcription of crucial signalling components and conserved symbiosis genes. Similarly, rice SMAX1 negatively controls strigolactone biosynthesis, demonstrating an unexpected crosstalk between the strigolactone and karrikin signalling pathways. We conclude that removal of SMAX1, resulting from D14L signalling activation, de-represses essential symbiotic programmes and increases strigolactone hormone production.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Arabidopsis
General Physics and Astronomy
01 natural sciences
Plant Roots
631/449
Lactones
Gene Expression Regulation, Plant
Mycorrhizae
RNA-Seq
14/19
lcsh:Science
Phylogeny
Plant Proteins
Regulation of gene expression
45/70
Multidisciplinary
Homozygote
article
Intracellular Signaling Peptides and Proteins
food and beverages
631/449/2676/2061
Karrikin
Cell biology
Crosstalk (biology)
Multigene Family
38/77
Signal transduction
631/449/2676
Heterocyclic Compounds, 3-Ring
Signal Transduction
Science
Strigolactone
Genetics and Molecular Biology
Germination
Biology
General Biochemistry, Genetics and Molecular Biology
96/95
38/91
03 medical and health sciences
Symbiosis
Furans
Gene
Pyrans
45
Arabidopsis Proteins
fungi
Oryza
General Chemistry
biology.organism_classification
030104 developmental biology
General Biochemistry
lcsh:Q
010606 plant biology & botany
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....d9e0a07faba7ec97d8f352ba1bedf9f6