E recorded at room temperature.FCS Characterization of NK1R-NLP Complexes and Binding Assay of FAM Labeled SP Interacting with NK1RNLP ComplexesLipid vesicles formed by DMPC were labeled by addition of a small fraction of fluorescently labeled DHPE (Texas Red dye 0.5 volume percentage). NK1R was labeled with a GFP fusion built into its plasmid during translation. In order to confirm the formation of NK1R-NLPs, the diffusion times of fluorescently labeled species in a volume of 10 mL were measured by FCS (MicroTime200, PicoQuant, Berlin, Germany). The samples were excited by a 470 nm laser (Picoquant pulsed diode laser, 70 ps pulse width, 20 MHz repetition rate) and the time traces ofSupporting InformationTable S1 Genes and vectors used for protein expres-sion. (DOC)Author ContributionsConceived and designed the experiments: TH WK JV MAC. Performed the experiments: TG JP WH. Analyzed the data: TG JP WH. Contributed reagents/materials/analysis tools: WK JV TH. Wrote the paper: TG MC. Helped with editing manuscript: TH WK JV.
The unique mutualism between corals and their photosynthetic zooxanthellae (Eledoisin Symbiodinium spp.) underpins ecological success of corals in shallow and oligotrophic seawater. However, this association is highly vulnerable to rising seawater temperatures. A rise of only 1,2uC above the summer average under 
moderate to high irradiance will likely be enough to disrupt the symbiotic relationships by causing the symbionts to be expelled from the host, precipitating so-called `coral bleaching’ [1,2]. Coral bleaching events are known to further cause a breakdown [1?] or phase shift [5?] in coral reefs. These situations are predicted to worsen with time if the increase in seawater surface temperatures cannot be slowed [8,9]. In 
order to understand 18055761 if corals can survive the coming stressful environments, the mechanisms underlying coral bleaching have been intensively studied (reviewed in Weis [10]). It is widely accepted that reactive oxygen species (ROS) generated by Symbiodinium photoinhibition and/or mitochondrial dysfunction in the host can cause breakdown of the symbiotic association [10?12]. However, the comparative susceptibility of coral hosts and Symbiodinium to thermal stresses is not completely understood. In studies of symbionts, cultured and freshly isolated Symbiodinium (FIS) was widely used to explore the symbiont physiology. Different physiological performances, such as the photosynthesiscapability under thermal stress, of FIS or cultured Symbiodinium were also revealed at the clade or subclade levels [13?6]. In contrast, studies on physiological SMER-28 price responses of aposymbiotic coral hosts are limi’ted due to a lack of suitable protocols. Several methods were used to deplete Symbiodinium from cnidarian hosts, including cold shock (e.g., 4uC) [17?9], a high seawater temperature (e.g., 33uC) [20], and 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) treatment [21], but few of them generated healthy aposymbiotic coral hosts which could be used for further studies. Aposymbiotic corals induced by high seawater temperatures either take a long time and need antibiotics treatment [20] or result in high coral mortality [22]. Hightemperature treatment might also implant a heat experience in corals which might influence the performance of bleached corals in thermal-tolerance studies. On the other hand, bleaching corals with DCMU requires high light intensities (e.g., 70 of ambient insolation) and large volumes of seawater (ca. 1000.E recorded at room temperature.FCS Characterization of NK1R-NLP Complexes and Binding Assay of FAM Labeled SP Interacting with NK1RNLP ComplexesLipid vesicles formed by DMPC were labeled by addition of a small fraction of fluorescently labeled DHPE (Texas Red dye 0.5 volume percentage). NK1R was labeled with a GFP fusion built into its plasmid during translation. In order to confirm the formation of NK1R-NLPs, the diffusion times of fluorescently labeled species in a volume of 10 mL were measured by FCS (MicroTime200, PicoQuant, Berlin, Germany). The samples were excited by a 470 nm laser (Picoquant pulsed diode laser, 70 ps pulse width, 20 MHz repetition rate) and the time traces ofSupporting InformationTable S1 Genes and vectors used for protein expres-sion. (DOC)Author ContributionsConceived and designed the experiments: TH WK JV MAC. Performed the experiments: TG JP WH. Analyzed the data: TG JP WH. Contributed reagents/materials/analysis tools: WK JV TH. Wrote the paper: TG MC. Helped with editing manuscript: TH WK JV.
The unique mutualism between corals and their photosynthetic zooxanthellae (Symbiodinium spp.) underpins ecological success of corals in shallow and oligotrophic seawater. However, this association is highly vulnerable to rising seawater temperatures. A rise of only 1,2uC above the summer average under moderate to high irradiance will likely be enough to disrupt the symbiotic relationships by causing the symbionts to be expelled from the host, precipitating so-called `coral bleaching’ [1,2]. Coral bleaching events are known to further cause a breakdown [1?] or phase shift [5?] in coral reefs. These situations are predicted to worsen with time if the increase in seawater surface temperatures cannot be slowed [8,9]. In order to understand 18055761 if corals can survive the coming stressful environments, the mechanisms underlying coral bleaching have been intensively studied (reviewed in Weis [10]). It is widely accepted that reactive oxygen species (ROS) generated by Symbiodinium photoinhibition and/or mitochondrial dysfunction in the host can cause breakdown of the symbiotic association [10?12]. However, the comparative susceptibility of coral hosts and Symbiodinium to thermal stresses is not completely understood. In studies of symbionts, cultured and freshly isolated Symbiodinium (FIS) was widely used to explore the symbiont physiology. Different physiological performances, such as the photosynthesiscapability under thermal stress, of FIS or cultured Symbiodinium were also revealed at the clade or subclade levels [13?6]. In contrast, studies on physiological responses of aposymbiotic coral hosts are limi’ted due to a lack of suitable protocols. Several methods were used to deplete Symbiodinium from cnidarian hosts, including cold shock (e.g., 4uC) [17?9], a high seawater temperature (e.g., 33uC) [20], and 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) treatment [21], but few of them generated healthy aposymbiotic coral hosts which could be used for further studies. Aposymbiotic corals induced by high seawater temperatures either take a long time and need antibiotics treatment [20] or result in high coral mortality [22]. Hightemperature treatment might also implant a heat experience in corals which might influence the performance of bleached corals in thermal-tolerance studies. On the other hand, bleaching corals with DCMU requires high light intensities (e.g., 70 of ambient insolation) and large volumes of seawater (ca. 1000.