On the origin of biological construction, with a focus on multicellularity

van Gestel Jordi; Tarnita Corina E.

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On the origin of biological construction, with a focus on multicellularity

机译：On the origin of biological construction, with a focus on multicellularity

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Biology is marked by a hierarchical organization: all life consists of cells; in some cases, these cells assemble into groups, such as endosymbionts or multicellular organisms; in turn, multicellular organisms sometimes assemble into yet other groups, such as primate societies or ant colonies. The construction of new organizational layers results from hierarchical evolutionary transitions, in which biological units (e.g., cells) form groups that evolve into new units of biological organization (e.g., multicellular organisms). Despite considerable advances, there is no bottom-up, dynamical account of how, starting from the solitary ancestor, the first groups originate and subsequently evolve the organizing principles that qualify them as new units. Guided by six central questions, we propose an integrative bottom-up approach for studying the dynamics underlying hierarchical evolutionary transitions, which builds on and synthesizes existing knowledge. This approach highlights the crucial role of the ecology and development of the solitary ancestor in the emergence and subsequent evolution of groups, and it stresses the paramount importance of the life cycle: only by evaluating groups in the context of their life cycle can we unravel the evolutionary trajectory of hierarchical transitions. These insights also provide a starting point for understanding the types of subsequent organizational complexity. The central research questions outlined here naturally link existing research programs on biological construction (e.g., on cooperation, multilevel selection, self-organization, and development) and thereby help integrate knowledge stemming from diverse fields of biology.

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《Proceedings of the National Academy of Sciences of the United States of America.》 |2017年第42期|11018-11026|共9页
作者
van Gestel Jordi; Tarnita Corina E.;
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作者单位

Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA;

Univ Zurich, Dept Evolutionary Biol & Environm Studies, CH-8057 Zurich, Switzerland;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
major evolutionary transitions; hierarchical evolutionary transitions; bottom-up approach; life cycle; animal sociality;

On the origin of biological construction, with a focus on multicellularity

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