Origin and evolution of gibberellin signaling and metabolism in plants

Hernández-García, Jorge; Briones‐Moreno, Asier; Blázquez, Miguel Á.

doi:10.1016/j.semcdb.2020.04.009

Cited by 108 publications

(81 citation statements)

References 151 publications

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“…Gibberellin biosynthesis and signalling might be an example of such clade specific adaptations. We observed that a considerable proportion of annotated DE genes in M. paleacea mentioned GA biosynthesis, in conflict with the notion that GA active compounds are not known to be produced in bryophytes (64,(68)(69)(70). Amongst the significantly upregulated genes in our dataset we identified two orthologs of KO (required for synthesis of the GA-precursor ent-kaurene) and two orthologs of GA-20-oxydases (required to convert inactive GA12 precursors into bioactive GAs (70)).…”

Section: Discussionmentioning

confidence: 57%

“…Whilst KOs were widely identified in bryophytes, there is contrasting literature on the existence of sensu stricto GA-20-oxidases (23,64,68,69,71). Furthermore, a number of GAox-related 2-oxoglutarate-dependent dioxygenases (2-OGDs) were identified in Physcomitrella patens and Selaginella moellendorffii prompting the theory that non-canonical GA-oxidation reactions might catalyse the production of diverse GA-like compounds in bryophytes and tracheophytes (70,91). The similarity in transcriptional responses between M. paleacea and M. truncatula and the induction of several GAox-related 2-OGDs oxidases in our dataset encourages us to support the hypothesis that non-canonical GA-like diterpenoids are produced in bryophytes, and that the synthesis of these compounds is enhanced during symbiosis.…”

Section: Discussionmentioning

confidence: 99%

“…Seven out of 13 genes annotated as gibberellin biosynthetic genes also presented the GO annotation "Gibberellin-20-oxidase" (GA20ox). Bryophytes have been previously reported to possess genes involved in GA precursor biosynthesis (ent-copalyl diphosphate synthase (CPS), ent-kaurene synthase (KS), ent-kaurene oxidase (KO), entkaurenoic acid oxidase (KAO)), while there is contrasting evidence on the existence of GA20ox, GA2ox and GA3ox orthologs and canonical GA bioactive molecules (63)(64)(65)(66)(67)(68)(69)(70)(71). We therefore investigated the identity of genes annotated as "Gibberellin-20-oxidase" and the expression levels of GA-precursor biosynthetic genes in M. paleacea.…”

Section: Gibberellin-like Diterpenoids Might Be Induced During Mpalementioning

confidence: 99%

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Transcriptional responses to arbuscular mycorrhizal symbiosis development are conserved in the early divergentMarchantia paleacea

Sgroi

Paszkowski

2020

Preprint

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Arbuscular mycorrhizal symbiosis (AMS) arose in land plants more than 400 million years ago, perhaps acting as a major contributor to plant terrestrialization. The ability to engage in AMS is evolutionarily conserved across most clades of extant land plants, including early diverging bryophytes. Despite its broad taxonomic distribution, little is known about the molecular components that underpin AMS in early diverging land plants as the mechanisms regulating the symbiosis were primarily characterized in angiosperms. Several AMS associated genes were recently shown to be conserved in liverworts and hornworts, but evidence of them being associated with symbiosis in bryophytes is scarce. In this study, we characterised the dynamic response of the liverwort Marchantia paleacea to Rhizophagus irregularis colonization by time-resolved transcriptomics across progressive stages of symbiosis development. Gene orthology inference and comparative analysis of the M. paleacea transcriptional profile with a well characterised legume model -Medicago truncatula - revealed a deep conservation of transcriptional responses to AMS across distantly related species. We identified evolutionarily conserved patterns of expression of genes required for pre-symbiotic signalling, intracellular colonization and symbiotic nutrient exchange. Our study demonstrates that the genetic machinery regulating key aspects of symbiosis in plant hosts is largely conserved and coregulated across distantly related land plants. If bryophytes are confirmed to be monophyletic, our analysis provides novel insights on the first molecular pathways associated with symbiosis at the dawn of plant colonization of land.Significance StatementArbuscular mycorrhizal symbiosis (AMS) between plants and soil fungi was proposed as one of the key adaptations enabling land colonization by plants. The symbiosis is widespread across most extant plant clades, including early-diverging bryophytes, suggesting that it evolved before the last common ancestor of land plants. Recent phylogenetic analyses uncovered that genes regulating AMS in angiosperms are present in the genomes of bryophytes. Our work shows that a set of these genes are transcriptionally induced during AMS in liverworts. Based on the conservation of their transcriptional profiles across land plants, we propose that these genes acquired an AMS-associated function before the last common ancestor of land plants.

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Section: Discussionmentioning

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Section: Gibberellin-like Diterpenoids Might Be Induced During Mpalementioning

confidence: 99%

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Transcriptional responses to arbuscular mycorrhizal symbiosis development are conserved in the early divergentMarchantia paleacea

Sgroi

Paszkowski

2020

Preprint

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“…Bioactive GAs are plant diterpene hormones that are essential for multiple aspects of plant growth and development, including seed germination, leaf expansion, trichome development, stem elongation, flowering, male fertility, and fruit set [ 7 , 8 , 9 ]. GA biosynthesis in plants involves many enzymes and cellular compartments, as well as the isoprenoid biosynthetic pathway [ 9 , 10 , 11 ]. The plastid-specific methylerythritol phosphate (MEP) pathway is particularly responsible for GA generation, as it provides the precursor geranylgeranyl diphosphate (GGPP) required for GA biosynthesis [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…The plastid-specific methylerythritol phosphate (MEP) pathway is particularly responsible for GA generation, as it provides the precursor geranylgeranyl diphosphate (GGPP) required for GA biosynthesis [ 11 ]. GGPP is converted to bioactive GAs sequentially by the copalyl diphosphate synthase (CPS), ent-kaurene synthase (KS), ent-kaurene oxidase (KO), ent-kaurenoic acid oxidase (KAO), and 2-oxoglutarate-dependent dioxygenases (2-OGDs) [ 9 , 10 ]. As an important part of its metabolism, deactivation of GA functions to regulate the concentration of bioactive GAs in plants can be achieved through GA2ox [ 12 ], GA methyl transferase [ 13 ], and cytochrome P450 monooxygenase [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

A GPAT1 Mutation in Arabidopsis Enhances Plant Height but Impairs Seed Oil Biosynthesis

Bai

Shen

Zhang

et al. 2021

IJMS

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Glycerol-3-phosphate acyltransferases (GPATs) play an important role in glycerolipid biosynthesis, and are mainly involved in oil production, flower development, and stress response. However, their roles in regulating plant height remain unreported. Here, we report that Arabidopsis GPAT1 is involved in the regulation of plant height. GUS assay and qRT-PCR analysis in Arabidopsis showed that GPAT1 is highly expressed in flowers, siliques, and seeds. A loss of function mutation in GPAT1 was shown to decrease seed yield but increase plant height through enhanced cell length. Transcriptomic and qRT-PCR data revealed that the expression levels of genes related to gibberellin (GA) biosynthesis and signaling, as well as those of cell wall organization and biogenesis, were significantly upregulated. These led to cell length elongation, and thus, an increase in plant height. Together, our data suggest that knockout of GPAT1 impairs glycerolipid metabolism in Arabidopsis, leading to reduced seed yield, but promotes the biosynthesis of GA, which ultimately enhances plant height. This study provides new evidence on the interplay between lipid and hormone metabolism in the regulation of plant height.

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Interaction of the Selenium and Silicon with Hormones in Drought Stress Response

Nicolau,

Checchio,

de Moura Gonçalves

et al. 2024

Signaling and Communication in Plants

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Origin and evolution of gibberellin signaling and metabolism in plants

Cited by 108 publications

References 151 publications

Transcriptional responses to arbuscular mycorrhizal symbiosis development are conserved in the early divergentMarchantia paleacea

Transcriptional responses to arbuscular mycorrhizal symbiosis development are conserved in the early divergentMarchantia paleacea

A GPAT1 Mutation in Arabidopsis Enhances Plant Height but Impairs Seed Oil Biosynthesis

Interaction of the Selenium and Silicon with Hormones in Drought Stress Response

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