Water-related innovations in land plants evolved by different patterns of gene cooption and novelty.

Autor: Bowles AMC; School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.; School of Geographical Sciences, University of Bristol, University Road, Bristol, BS8 1RL, UK., Paps J; School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.; School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK., Bechtold U; School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2022 Jul; Vol. 235 (2), pp. 732-742. Date of Electronic Publication: 2022 Feb 08.
DOI: 10.1111/nph.17981
Abstrakt: The origin of land plants and their descendants was marked by the evolution of key adaptations to life in terrestrial environments such as roots, vascular tissue and stomata. Though these innovations are well characterized, the evolution of the genetic toolkit underlying their development and function is poorly understood. We analysed molecular data from 532 species to investigate the evolutionary origin and diversification of genes involved in the development and regulation of these adaptations. We show that novel genes in the first land plants led to the single origin of stomata, but the stomatal closure of seed plants resulted from later gene expansions. By contrast, the major mechanism leading to the origin of vascular tissue was cooption of genes that emerged in the first land plants, enabling continuous water transport throughout the ancestral vascular plant. In turn, new key genes in the ancestors of plants with true leaves and seed plants led to the emergence of roots and lateral roots. The analysis highlights the different modes of evolution that enabled plants to conquer land, suggesting that gene expansion and cooption are the most common mechanisms of biological innovation in plant evolutionary history.
(© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.)
Databáze: MEDLINE
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