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Can I read Divergent Receptor Proteins Confer Responses to Different Karrikins in Two Ephemeral Weeds on EtoBox?
Divergent Receptor Proteins Confer Responses to Different Karrikins in Two Ephemeral Weeds by Sun, Yueming Kelly; Yao, Jiaren; Scaffidi, Adrian; Melville, Kim T.; Davies, Sabrina F.; Bond, Charles S.; Smith, Steven M.; Flematti, Gavin R.; Waters, Mark T. is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
What is Divergent Receptor Proteins Confer Responses to Different Karrikins in Two Ephemeral Weeds about?
Wildfires can encourage the establishment of invasive plants by releasing potent germination stimulants, such as karrikins. Seed germination of __Brassica tournefortii__, a noxious weed of Mediterranean climates, is strongly stimulated by KAR~1~, the archetypal karrikin produced from burning vegetation. In contrast, the closely-related yet non-fire-associated ephemeral __Arabidopsis__ __thaliana__ is unusual because it responds preferentially to KAR~2~. The α/β-hydrolase KARRIKIN INSENSITIVE 2 (KAI2) is the putative karrikin receptor identified in __Arabidopsis__. Here we show that __B. tournefortii__ expresses three __KAI2__ homologues, and the most highly-expressed homologue is sufficient to confer enhanced responses to KAR~1~ relative to KAR~2~ when expressed in __Arabidopsis__. We identify two amino acid residues near the KAI2 active site that explain the ligand selectivity, and show that this combination has arisen independently multiple times within dicots. Our results suggest that duplication and diversification of KAI2 proteins could confer differential responses to chemical cues produced by environmental disturbance, including fire.
Who reads Divergent Receptor Proteins Confer Responses to Different Karrikins in Two Ephemeral Weeds?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- Sun, Yueming Kelly; Yao, Jiaren; Scaffidi, Adrian; Melville, Kim T.; Davies, Sabrina F.; Bond, Charles S.; Smith, Steven M.; Flematti, Gavin R.; Waters, Mark T.
- Publisher
- Nature Publishing Group; Springer Science and Business Media LLC; [London]: Nature Publishing Group, 2010-; Society for Mining, Metallurgy and Exploration Inc.; Research Square (ISSN 2041-1723)
- Published
- 2020
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)