ArticlePlanta2016
Structural modelling and transcriptional responses highlight a clade of PpKAI2-LIKE genes as candidate receptors for strigolactones in Physcomitrella patens.
Article in Planta, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 45 citations in OpenAlex.
- SUPPRESSOR OF MAX2 1-LIKE (SMXL) homologs are MAX2-dependent repressors of Physcomitrium patens growth.The Plant cell · 2024Article
- KAI2 Can Do: Karrikin Receptor Function in Plant Development and Response to Abiotic and Biotic Factors.Plant & cell physiology · 2023Article
- Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.bioRxiv : the preprint server for biology · 2023Article
- A KARRIKIN INSENSITIVE2 paralog in lettuce mediates highly sensitive germination responses to karrikinolide.Plant physiology · 2022Article
- The Physcomitrium (Physcomitrella) patens PpKAI2L receptors for strigolactones and related compounds function via MAX2-dependent and -independent pathways.The Plant cell · 2021Article
- Catabolism of strigolactones by a carboxylesterase.Nature plants · 2021Article
- Major components of the KARRIKIN INSENSITIVE2-dependent signaling pathway are conserved in the liverwort Marchantia polymorpha.The Plant cell · 2021Article
- The mechanism of host-induced germination in root parasitic plants.Plant physiology · 2021Review
- Adaptation of the parasitic plant lifecycle: germination is controlled by essential host signaling molecules.Plant physiology · 2021Article
- Divergent receptor proteins confer responses to different karrikins in two ephemeral weeds.Nature communications · 2020Article
- Strigolactone synthesis is ancestral in land plants, but canonical strigolactone signalling is a flowering plant innovation.BMC biology · 2019Article
- Evolution of strigolactone receptors by gradual neo-functionalization of KAI2 paralogues.BMC biology · 2017Article
- Strigolactone regulates shoot development through a core signalling pathway.Biology open · 2016Article
- Unveiling the functional diversity of the alpha/beta hydrolase superfamily in the plant kingdom.Current opinion in structural biology · 2016Review
- Simple and Efficient Targeting of Multiple Genes Through CRISPR-Cas9 inG3 (Bethesda, Md.) · 2016Article
- An histidine covalent receptor and butenolide complex mediates strigolactone perception.Nature chemical biology · 2016Article
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
MAIN
conclusionA set of PpKAI2 - LIKE paralogs that may encode strigolactone receptors in Physcomitrella patens were identified through evolutionary, structural, and transcriptional analyses, suggesting that strigolactone perception may have evolved independently in basal land plants in a similar manner as spermatophytes. Carotenoid-derived compounds known as strigolactones are a new class of plant hormones that modulate development and interactions with parasitic plants and arbuscular mycorrhizal fungi. The strigolactone receptor protein DWARF14 (D14) belongs to the α/β hydrolase family. D14 is closely related to KARRIKIN INSENSITIVE2 (KAI2), a receptor of smoke-derived germination stimulants called karrikins. Strigolactone and karrikin structures share a butenolide ring that is necessary for bioactivity. Charophyte algae and basal land plants produce strigolactones that influence their development. However phylogenetic studies suggest that D14 is absent from algae, moss, and liverwort genomes, raising the question of how these basal plants perceive strigolactones. Strigolactone perception during seed germination putatively evolved in parasitic plants through gene duplication and neofunctionalization of KAI2 paralogs. The moss Physcomitrella patens shows an increase in KAI2 gene copy number, similar to parasitic plants. In this study we investigated whether P. patens KAI2-LIKE (PpKAI2L) genes may contribute to strigolactone perception. Based on phylogenetic analyses and homology modelling, we predict that a clade of PpKAI2L proteins have enlarged ligand-binding cavities, similar to D14. We observed that some PpKAI2L genes have transcriptional responses to the synthetic strigolactone GR24 racemate or its enantiomers. These responses were influenced by light and dark conditions. Moreover, (+)-GR24 seems to be the active enantiomer that induces the transcriptional responses of PpKAI2L genes. We hypothesize that members of specific PpKAI2L clades are candidate strigolactone receptors in moss.
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