Literature DB >> 967406

Evolutionary oscillation in prebiology: igneous activity and the origins of life.

P C Sylvester-Bradley.   

Abstract

The processes of chemical evolution are responsible for the origin of life. Three such processes have special importance: oscillation, creation, and competition. An oscillation from one kind of environment to another provides a mechanism for instituting processes that can only take place under conditions far removed from equilibrium. Oscillating evolutionary processes are likely to have played an important part in the origin of life. It is a mistake to assume that life originated in any one environment. It did not arrive in a moment of time. It was the result of a long period of chemical evolution during which it passed through a variety of environments. Biopoesis took place in an environment in which a variety of different kinds of protolife were assembled and concentrated. One essential form of protolife involved in these processes is the protocell. The experiments of Fox suggest that the creation of protocells involves violent oscillations of temperature and hydration. Igneous activity is especially characterised by oscillating conditions. Volcanic eruptions consist of violent changes from one extreme condition to another. Temperatures, pressure, phase, concentration and hydration all oscillate violently, and are subject to shock pulses of many kinds. Protolife may well have passed through extremes of environment for wider that those that life itself can sustain. The most probable environment for the assembly of the various forms of protolife would be on mudbanks forming either at the mouth of streams draining regions of active vulcanicity, or round the edge of hot volclanic pools. In this situation one could fins concentrated not only the various stands of protolife necessary for the final act of biopoesis, but also perbiologically formed nutrients necessary as for the first eobionts. As soon as the first protocells start to grow, they start to compete with each other, and so initiate a new additional evolutionary process, that of natural selection. Only after such competition has been initiated is life itself likely to be established"20

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Year:  1976        PMID: 967406     DOI: 10.1007/BF01218510

Source DB:  PubMed          Journal:  Orig Life        ISSN: 0302-1688


  7 in total

1.  A production of amino acids under possible primitive earth conditions.

Authors:  S L MILLER
Journal:  Science       Date:  1953-05-15       Impact factor: 47.728

2.  Dehydration and rehydration in a prebiological system.

Authors:  A E Smith; F T Bellware
Journal:  Science       Date:  1966-04-15       Impact factor: 47.728

3.  Primordial oil slick.

Authors:  A C Lasaga; H D Holland; M J Dwyer
Journal:  Science       Date:  1971-10-01       Impact factor: 47.728

4.  The possible role of clays in prebiotic peptide synthesis.

Authors:  M Paecht-Horowitz
Journal:  Orig Life       Date:  1974 Jan-Apr

5.  Galactic clouds of organic molecules.

Authors:  D Buhl
Journal:  Orig Life       Date:  1974 Jan-Apr

6.  Extraterrestrial abiogenic organization of organic matter: the hollow spheres of the orgueil meteorite.

Authors:  M Rossignol-Strick; E S Barghoorn
Journal:  Space Life Sci       Date:  1971-12

7.  Organic Compounds in Meteorites: They may have formed in the solar nebula, by catalytic reactions of carbon monoxide, hydrogen, and ammonia.

Authors:  E Anders; R Hayatsu; M H Studier
Journal:  Science       Date:  1973-11-23       Impact factor: 47.728

  7 in total
  2 in total

1.  Primeval procreative comet pond.

Authors:  B C Clark
Journal:  Orig Life Evol Biosph       Date:  1988       Impact factor: 1.950

2.  Monomolecular tetrahelix of polyguanine with a strictly defined folding pattern.

Authors:  Besik Kankia
Journal:  Sci Rep       Date:  2018-07-04       Impact factor: 4.379

  2 in total

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