Origins of Life and Evolution of Biospheres最新文献

{"title":"Lotus spp.: a Mediterranean genus with high environment and economic impact in the Salado River Basin (Argentina)","authors":"Oscar Adolfo Ruiz, Maximiliano Gortari, Vanina Giselle Maguire, Romina Paola Arese, María Paula Campestre, Cristian Javier Antonelli, Pablo Ignacio Calzadilla, Ana Bernardina Menéndez, Francisco José Escaray, Pedro Miguel Carrasco Sorli, Matías Andrés Bailleres, Juan Pedro Ezquiaga, Francesco Paolocci, Andrés Garriz, Amira Susana del Valle Nieva","doi":"10.1007/s11084-024-09646-5","DOIUrl":"https://doi.org/10.1007/s11084-024-09646-5","url":null,"abstract":"<p>This review has the principal objective in to hypothesise that the introduction of <i>Lotus</i> species could have significant benefits in constrained soils due their worldwide distribution. This idea is major based on results obtained in the lowlands of the most important livestock breeding area in Argentina denominated Salado River Basin (also called “Flooding Pampas”). Mostly of their land surface is dominated by salt-affected soils with severe constraints for traditional crop cultivation (i.e., maize, soybean, etc.). In order to increase their economic importance, farmers have utilized species such as non-native <i>L. tenuis</i> (ex- <i>Lotus glaber</i>), originating from European Mediterranean area, which shows a successfully and fast naturalization (in less than 60 years) in constrained areas improving forage performance. The increase in soil quality associated to this legume is achieved by an increment of the organic matter content and improvement of fertility and physicochemical parameters. Moreover, other studies have evidenced some genetic determinants associated with interesting agronomic traits such as plant tolerance to environmental stresses and the importance of leaves condensed tannins concentrations. This revision has many topics including a brief analysis of economic and environmental changes that occur under <i>Lotus</i> species implantation. In addition, we incorporate references recently published concerning the evaluation of the biochemical and physiological mechanisms involved in their adaptation to strong abiotic stresses characteristic of the region, the soil and plant microbiota diversity and soil physical and chemical characteristics associated to the presence of <i>Lotus</i> genotypes.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"49 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141147259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequential gentle hydration increases encapsulation in model protocells","authors":"Emma M. Gehlbach, Abbey O. Robinson, Aaron E. Engelhart, Katarzyna P. Adamala","doi":"10.1007/s11084-024-09645-6","DOIUrl":"https://doi.org/10.1007/s11084-024-09645-6","url":null,"abstract":"<p>Small, spherical vesicles are a widely used chassis for the formation of model protocells and investigating the beginning of compartmentalized evolution. Various methods exist for their preparation, with one of the most common approaches being gentle hydration, where thin layers of lipids are hydrated with aqueous solutions and gently agitated to form vesicles. An important benefit to gentle hydration is that the method produces vesicles without introducing any organic contaminants, such as mineral oil, into the lipid bilayer. However, compared to other methods of liposome formation, gentle hydration is much less efficient at encapsulating aqueous cargo. Improving the encapsulation efficiency of gentle hydration would be of broad use for medicine, biotechnology, and protocell research. Here, we describe a method of sequentially hydrating lipid thin films to increase encapsulation efficiency. We demonstrate that sequential gentle hydration significantly improves encapsulation of water-soluble cargo compared to the traditional method, and that this improved efficiency is dependent on buffer composition. Similarly, we also demonstrate how this method can be used to increase concentrations of oleic acid, a fatty acid commonly used in origins of life research, to improve the formation of vesicles in aqueous buffer.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"22 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140928173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2500 years ago scientific theories of the origin of life arose in ancient Greece","authors":"Julyan H. E. Cartwright","doi":"10.1007/s11084-024-09644-7","DOIUrl":"https://doi.org/10.1007/s11084-024-09644-7","url":null,"abstract":"<p>What have the Greeks ever done for us? Everything. This short commentary celebrating the earliest history of origin of life research seeks to bring to the attention of the community of origin of life researchers that there is a much longer tradition of scientific theories in this subject than some people are aware of; there are 2500 years of thinking that we should not forget about. In Ionian Greece, Thales initiated ideas that we can see as the beginnings of science itself. Anaximander, his pupil, was particularly interested in the origins of the world, including how life had arisen, and proposed a species of proto-evolutionary theory of the origin of life. 2500 years ago, Anaxagoras left Ionia for Athens taking ideas of scientific thinking with him. Anaxagoras is credited with being the originator of a further theory of the origin of life, that of panspermia. The scientific conception of knowledge was attacked almost immediately, and Anaxagoras ended up exiled, but that idea of the knowability of things survived and led, many centuries later, to the scientific revolution and to our current human civilization.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"298 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140592603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The \"Ladder of Inference\" as a Conflict Management Tool: Working with the \"Difficult\" Patient or Family in Healthcare Ethics Consultations.","authors":"Autumn Fiester","doi":"10.1007/s10730-022-09476-w","DOIUrl":"10.1007/s10730-022-09476-w","url":null,"abstract":"<p><p>Conflict resolution is a core component of healthcare ethics consultation (HEC) and proficiency in this skill set is recognized by the national bioethics organization and its HEC certification process. Difficult interpersonal interactions between the clinical team and patients or their families are often inexorably connected to the normative disputes that are the catalyst for the consult. Ethics consultants are often required to navigate challenging dynamics that have become entrenched and work with patient-provider or family-provider relationships that have already broken down. The first step in conflict resolution is diagnosing the source of the conflict. Because so many interpersonal and normative conflicts rest on misunderstanding and mischaracterization, the diagnosis of the problem requires untangling the actual positions and perspectives of the conflicting parties from the fallacious assumptions made about the parties' respective positions and views. Developed in management science, the Ladder of Inference (LOI) is a diagnostic tool for assisting stakeholders in re-examining the process they used to form beliefs about others involved in the conflict. The LOI is a device that detects errors in reasoning, including implicit racial bias, that lead to false judgments and counterproductive responses to those judgments. The LOI is an instrument that can be used by ethics consultants to help resolve contentious bedside conflicts, but the LOI can also be employed as a teaching tool used by healthcare ethics consultants in training the clinical staff in how to avoid such conflicts in the first place.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"19 1","pages":"31-44"},"PeriodicalIF":1.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73630750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decorated Vesicles as Prebiont Systems (a Hypothesis)","authors":"Martin Fisk, Radu Popa","doi":"10.1007/s11084-023-09643-0","DOIUrl":"https://doi.org/10.1007/s11084-023-09643-0","url":null,"abstract":"<p>Decorated vesicles in deep, seafloor basalts form abiotically, but show at least four life-analogous features, which makes them a candidate for origin of life research. These features are a physical enclosure, carbon-assimilatory catalysts, semi-permeable boundaries, and a source of usable energy. The nanometer-to-micron-sized spherules on the inner walls of decorated vesicles are proposed to function as mineral proto-enzymes. Chemically, these structures resemble synthetic FeS clusters shown to convert CO₂, CO and H₂ into methane, formate, and acetate. Secondary phyllosilicate minerals line the vesicles’ inner walls and can span openings in the vesicles and thus can act as molecular sieves between the vesicles’ interior and the surrounding aquifer. Lastly, basalt glass in the vesicle walls takes up protons, which replace cations in the silicate framework. This results in an inward proton flux, reciprocal outward flux of metal cations, more alkaline pH inside the vesicle than outside, and production of more phyllosilicates. Such life-like features could have been exploited to move decorated vesicles toward protolife systems. Decorated vesicles are proposed as study models of prebiotic systems that are expected to have existed on the early Earth and Earth-like exoplanets. Their analysis can lead to better understanding of changes in planetary geocycles during the origin of life.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"2 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138745666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of Prebiotic Peptide Formation in Cyclic Environments.","authors":"Hayley Boigenzahn, Praful Gagrani, John Yin","doi":"10.1007/s11084-023-09641-2","DOIUrl":"10.1007/s11084-023-09641-2","url":null,"abstract":"<p><p>The dynamic behaviors of prebiotic reaction networks may be critically important to understanding how larger biopolymers could emerge, despite being unfavorable to form in water. We focus on understanding the dynamics of simple systems, prior to the emergence of replication mechanisms, and what role they may have played in biopolymer formation. We specifically consider the dynamics in cyclic environments using both model and experimental data. Cyclic environmental conditions prevent a system from reaching thermodynamic equilibrium, improving the chance of observing interesting kinetic behaviors. We used an approximate kinetic model to simulate the dynamics of trimetaphosphate (TP)-activated peptide formation from glycine in cyclic wet-dry conditions. The model predicts that environmental cycling allows trimer and tetramer peptides to sustain concentrations above the predicted fixed points of the model due to overshoot, a dynamic phenomenon. Our experiments demonstrate that oscillatory environments can shift product distributions in favor of longer peptides. However, experimental validation of certain behaviors in the kinetic model is challenging, considering that open systems with cyclic environmental conditions break many of the common assumptions in classical chemical kinetics. Overall, our results suggest that the dynamics of simple peptide reaction networks in cyclic environments may have been important for the formation of longer polymers on the early Earth. Similar phenomena may have also contributed to the emergence of reaction networks with product distributions determined not by thermodynamics, but rather by kinetics.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":" ","pages":"157-173"},"PeriodicalIF":2.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66784196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequential Amplification of Amino Acid Enantiomeric Excess by Conglomerate and Racemic Compound: Plausible Prebiotic Route Towards Homochirality.","authors":"A Sharma","doi":"10.1007/s11084-023-09642-1","DOIUrl":"10.1007/s11084-023-09642-1","url":null,"abstract":"<p><p>Some amino acids can crystallize from aqueous solution both as conglomerates and racemic compounds: under high supersaturation following rapid evaporation, dissolved amino acids draining over porous sand-bars behave like conglomerates whereas in the resulting deeper pool of water, amino acid solution switches to the more common racemic-compound system. We show how the two forms might have sequentially combined under prebiotic conditions to form the basis of homochirality. The paper is a quantitative analysis of enantiomeric excess (EE) this dual behavior of amino acids is capable of producing in tandem: Initial amplification by preferential crystallization (PC) in conglomerate system (CS) followed by further amplification in the racemic compound system (RCS). Using aspartic acid as a model system, ternary phase diagram shows that a minimum supersaturation of 1.65 is required in the CS for the solution-EE to reach its maximum value of 50% at the RCS eutectic point. A relationship is derived for the dependence of this threshold supersaturation on the eutectic solubilities of CS and RCS. For given supersaturation in CS, a relation is also derived for minimum solution-EE that must be produced by PC before CS switches to RCS. Required PC-induced threshold solution-EE of 0.194, 0.070, 0.033 is calculated for supersaturation of 2, 5, 10 respectively in aspartic acid. Switching from CS to RCS further amplifies solution-EE, resulting in an overall growth of aspartic acid solution EE from near-zero in CS to around 50% in RCS.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":" ","pages":"175-185"},"PeriodicalIF":2.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41208071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Did Salts in Seawater Play an Important Role in the Adsorption of Molecules on Minerals in the Prebiotic Earth? The Case of the Adsorption of Thiocyanate onto Forsterite-91.","authors":"Giulio Wilgner Ferreira, Rafael Block Samulewski, Flávio Francisco Ivashita, Andrea Paesano, Alexandre Urbano, Dimas Augusto Morozin Zaia","doi":"10.1007/s11084-023-09640-3","DOIUrl":"10.1007/s11084-023-09640-3","url":null,"abstract":"<p><p>Thiocyanate may have played as important a role as cyanide in the synthesis of several molecules. However, its concentration in the seas of the prebiotic Earth could have been very low. Thiocyanate was dissolved in two different seawaters: a) a composition that comes close to the seawater of the prebiotic Earth (seawater-B, Ca²⁺ and Cl^-) and b) a seawater (seawater-A, Mg²⁺ and SO₄^2-) that could be related to the seas of Mars and other moons in the solar system. In addition, forsterite-91 was a very common mineral on the prebiotic Earth and Mars. Two important results are reported in this work: 1) thiocyanate adsorbed onto forsterite-91 and 2) the amount of thiocyanate adsorbed, adsorption thermodynamic, and adsorption kinetic depend on the composition of the artificial seawater. For all experiments, the adsorption was thermodynamically favorable (ΔG < 0). The adsorption data fitted well in the Freundlich and Langmuir-Freundlich models. When dissolving thiocyanate in seawater 4.0-A-Gy and seawater 4.0-B-Gy, the adsorption of thiocyanate onto forsterite-91 was ruled by enthalpy and entropy, respectively. As shown by n values, the thiocyanate/foraterite-91 system is heterogeneous. For all kinetic data, the pseudo-first-order model presented the best fit. The constant rate for thiocyanate dissolved in seawater 4.0-A-Gy was twice that compared to thiocyanate dissolved in seawater 4.0-B-Gy or ultrapure-water. The interaction between thiocyanate and Fe²⁺ of forsterite-91 was with the nitrogen atom of thiocyanate. In the presence of thiocyanate, sulfate interacts with forsterite-91 as an inner-sphere surface complex, and without thiocyanate as an outer-sphere surface complex.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":" ","pages":"127-156"},"PeriodicalIF":2.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10542775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonenzymatic Template-Directed Primer Extension Using 2'-3' Cyclic Nucleotides Under Wet-Dry Cycles.","authors":"Shikha Dagar,&nbsp;Susovan Sarkar,&nbsp;Sudha Rajamani","doi":"10.1007/s11084-023-09636-z","DOIUrl":"10.1007/s11084-023-09636-z","url":null,"abstract":"<p><p>RNA World Hypothesis is centred around the idea of a period in the early history of life's origin, wherein nonenzymatic oligomerization and replication of RNA resulted in functional ribozymes. Previous studies in this endeavour have demonstrated template-directed primer extension using chemically modified nucleotides and primers. Nonetheless, similar studies that used non-activated nucleotides led to the formation of RNA only with abasic sites. In this study, we report template-directed primer extension with prebiotically relevant cyclic nucleotides, under dehydration-rehydration (DH-RH) cycles occurring at high temperature (90 °C) and alkaline conditions (pH 8). 2'-3' cyclic nucleoside monophosphates (cNMP) resulted in primer extension, while 3'-5' cNMP failed to do so. Intact extension of up to two nucleotide additions was observed with both canonical hydroxy-terminated (OH-primer) and activated amino-terminated (NH₂-primer) primers. We demonstrate primer extension reactions using both purine and pyrimidine 2'-3' cNMPs, with higher product yield observed during cAMP additions. Further, the presence of lipid was observed to significantly enhance the extended product in cCMP reactions. In all, our study provides a proof-of-concept for nonenzymatic primer extension of RNA, using intrinsically activated prebiotically relevant cyclic nucleotides as monomers.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"53 1-2","pages":"43-60"},"PeriodicalIF":2.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10239795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parity Violation Energy Difference Calculation of Atropisomers.","authors":"Dhanalakshmi Vadivel,&nbsp;Daniele Dondi","doi":"10.1007/s11084-023-09639-w","DOIUrl":"10.1007/s11084-023-09639-w","url":null,"abstract":"<p><p>Enantiomers have a different energy due to the parity violation effects. Up to now, these effects are difficult to calculate and their final effect on the choice of one enantiomer in the homochirality issue is still a matter of debate. Nevertheless, many scientists support the role of this tiny energy difference in the triggering of homochirality. In this work, we studied the energy difference in atropisomers, a class of stereoisomers in which the chirality is given by the block of rotation around one bond. Atropisomers might have a low energy barrier for the interconversion and this is interesting for the equilibration of the two enantiomers and the choice of the most stable enantiomer. Moreover, structures might be extended like in the case of polymers or crystals having helical framework and thus giving an additive effect on the parity violation energy of the whole structure. The parity violation energy difference here is discussed with the correlation on the general structure of the final molecule giving a qualitative model to predict the sign of local contributions of atoms.</p>","PeriodicalId":19614,"journal":{"name":"Origins of Life and Evolution of Biospheres","volume":"53 1-2","pages":"61-69"},"PeriodicalIF":2.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10290950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}