On the Evolutionary Origins of Land Plant Auxin Biology

Bowman, John L.; Flores-Sandoval, Eduardo; Kato, Hirotaka

doi:10.1101/cshperspect.a040048

Cited by 18 publications

(21 citation statements)

References 170 publications

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“…How the evolution of plant growth hormones has been associated with root evolution is largely elusive. In the case of auxin, emergence of the core components mediating the response clearly predated lycophyte evolution ( Bowman et al, 2021 ). In contrast to seed plants, auxins cannot induce root branching in non-seed vascular plants ( Hou and Hill, 2004 ; Fang et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

“…Auxin biosynthesis, signaling, transport, and conjugation all predated evolution of vascular plants ( Bowman et al, 2021 ). However, it is currently unknown whether auxin is also involved in the IC maintenance of the lycophyte RAM.…”

Section: Auxin Controlmentioning

confidence: 99%

“…Auxin binds TIR1/AFB-Aux/IAA co-receptors, which leads to degradation of the Aux/IAAs and release of ARF TFs that regulate auxin responsive genes ( Gray et al, 2001 ; Dharmasiri et al, 2005 ; Tan et al, 2007 ; Dos Santos Maraschin et al, 2009 ; Korasick et al, 2014 ; Israeli et al, 2020 ). Such a complete auxin response system is present in all land plants, but increased in complexity during evolution ( Bowman et al, 2021 ). Phylogenetic analysis shows that the Aux/IAA gene family diverged into canonical and noncanonical Aux/IAAs .…”

Section: Comparative Genomics and Transcriptomics To Get Insights Into Lycophyte Root Developmentmentioning

confidence: 99%

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Early “Rootprints” of Plant Terrestrialization: Selaginella Root Development Sheds Light on Root Evolution in Vascular Plants

et al. 2021

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Roots provide multiple key functions for plants, including anchorage and capturing of water and nutrients. Evolutionarily, roots represent a crucial innovation that enabled plants to migrate from aquatic to terrestrial environment and to grow in height. Based on fossil evidence, roots evolved at least twice independently, once in the lycophyte clade and once in the euphyllophyte (ferns and seed plants) clade. In lycophytes, roots originated in a stepwise manner. Despite their pivotal position in root evolution, it remains unclear how root development is controlled in lycophytes. Getting more insight into lycophyte root development might shed light on how genetic players controlling the root meristem and root developmental processes have evolved. Unfortunately, genetic studies in lycophytes are lagging behind, lacking advanced biotechnological tools, partially caused by the limited economic value of this clade. The technology of RNA sequencing (RNA-seq) at least enabled transcriptome studies, which could enhance the understanding or discovery of genes involved in the root development of this sister group of euphyllophytes. Here, we provide an overview of the current knowledge on root evolution followed by a survey of root developmental events and how these are genetically and hormonally controlled, starting from insights obtained in the model seed plant Arabidopsis and where possible making a comparison with lycophyte root development. Second, we suggest possible key genetic regulators in root development of lycophytes mainly based on their expression profiles in Selaginella moellendorffii and phylogenetics. Finally, we point out challenges and possible future directions for research on root evolution.

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Section: Discussionmentioning

confidence: 99%

Section: Auxin Controlmentioning

confidence: 99%

Section: Comparative Genomics and Transcriptomics To Get Insights Into Lycophyte Root Developmentmentioning

confidence: 99%

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Early “Rootprints” of Plant Terrestrialization: Selaginella Root Development Sheds Light on Root Evolution in Vascular Plants

et al. 2021

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“…Phylogenetic and metabolomic analyses indicate that members of the GH3 family and amino acid‐IAA conjugates are common to land plants (Staswick et al , 2005; Terol et al , 2006; Bowman et al , 2021). The GH3 family is divided into three phylogenetic subgroups with different substrate preferences (Figs 2 and EV3; Bowman et al , 2021). In angiosperms, members of group II function in auxin conjugation, while those of group I and III use jasmonic acid (JA) or benzoate as substrates, respectively (Staswick et al , 2005; Okrent et al , 2009).…”

Section: Where the Giants Are…mentioning

confidence: 99%

The birth of a giant: evolutionary insights into the origin of auxin responses in plants

et al. 2023

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The plant signaling molecule auxin is present in multiple kingdoms of life. Since its discovery, a century of research has been focused on its action as a phytohormone. In land plants, auxin regulates growth and development through transcriptional and non‐transcriptional programs. Some of the molecular mechanisms underlying these responses are well understood, mainly in Arabidopsis. Recently, the availability of genomic and transcriptomic data of green lineages, together with phylogenetic inference, has provided the basis to reconstruct the evolutionary history of some components involved in auxin biology. In this review, we follow the evolutionary trajectory that allowed auxin to become the “giant” of plant biology by focusing on bryophytes and streptophyte algae. We consider auxin biosynthesis, transport, physiological, and molecular responses, as well as evidence supporting the role of auxin as a chemical messenger for communication within ecosystems. Finally, we emphasize that functional validation of predicted orthologs will shed light on the conserved properties of auxin biology among streptophytes.

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“…Available evidence from bryophytes suggests that the first land plants had the key components of auxin biology in place: the IPyA biosynthetic pathway, the PAT components, and TIR1/AFB-Aux/IAA-ARF transcriptional auxin response (for review, see Bowman et al 2021;Suzuki et al 2021). The key role of auxin at this stage is best demonstrated by a complete loss of differentiation in M. polymorpha mutants lacking IAA biosynthesis (Eklund et al 2015).…”

Section: Station 14: Genesis-searching For Auxin Beginningsmentioning

confidence: 99%

Fourteen Stations of Auxin

Friml

2021

Cold Spring Harb Perspect Biol

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Auxin has always been at the forefront of research in plant physiology and development. Since the earliest contemplations by Julius von Sachs and Charles Darwin, more than a century-long struggle has been waged to understand its function. This largely reflects the failures, successes, and inevitable progress in the entire field of plant signaling and development. Here I present 14 stations on our long and sometimes mystical journey to understand auxin. These highlights were selected to give a flavor of the field and to show the scope and limits of our current knowledge. A special focus is put on features that make auxin unique among phytohormones, such as its dynamic, directional transport network, which integrates external and internal signals, including self-organizing feedback. Accented are persistent mysteries and controversies. The unexpected discoveries related to rapid auxin responses and growth regulation recently disturbed our contentment regarding understanding of the auxin signaling mechanism. These new revelations, along with advances in technology, usher us into a new, exciting era in auxin research.

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On the Evolutionary Origins of Land Plant Auxin Biology

Cited by 18 publications

References 170 publications

Early “Rootprints” of Plant Terrestrialization: Selaginella Root Development Sheds Light on Root Evolution in Vascular Plants

Early “Rootprints” of Plant Terrestrialization: Selaginella Root Development Sheds Light on Root Evolution in Vascular Plants

The birth of a giant: evolutionary insights into the origin of auxin responses in plants

Fourteen Stations of Auxin

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