Reprogramming of root epidermal cells in response to nutrient deficiency

Perry, Paula; Linke, Bernd; Schmidt, Wolfgang

doi:10.1042/bst0350161

Cited by 19 publications

(13 citation statements)

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“…Another possibility is that, as a cell that extends from the plant body into the rhizosphere, the root hair may evolve and utilize multiple developmental strategies to effectively interact with and adapt to a varying environment. In support of this, root hair growth in many species is known to be strongly influenced by nutrient availability (Perry et al, 2007;Nestler et al, 2016;Salazar-Henao et al, 2016). Alternatively, the strong selection for high yield imposed on most of these species during their domestication may be responsible for the high degree of root hair gene divergence.…”

Section: Discussionmentioning

confidence: 99%

Diversification of Root Hair Development Genes in Vascular Plants

et al. 2017

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ORCID IDs: 0000-0002-5135-6088 (L.H.); 0000-0002-0560-5872 (J.S.).The molecular genetic program for root hair development has been studied intensively in Arabidopsis (Arabidopsis thaliana). To understand the extent to which this program might operate in other plants, we conducted a large-scale comparative analysis of root hair development genes from diverse vascular plants, including eudicots, monocots, and a lycophyte. Combining phylogenetics and transcriptomics, we discovered conservation of a core set of root hair genes across all vascular plants, which may derive from an ancient program for unidirectional cell growth coopted for root hair development during vascular plant evolution. Interestingly, we also discovered preferential diversification in the structure and expression of root hair development genes, relative to other root hair-and root-expressed genes, among these species. These differences enabled the definition of sets of genes and gene functions that were acquired or lost in specific lineages during vascular plant evolution. In particular, we found substantial divergence in the structure and expression of genes used for root hair patterning, suggesting that the Arabidopsis transcriptional regulatory mechanism is not shared by other species. To our knowledge, this study provides the first comprehensive view of gene expression in a single plant cell type across multiple species.

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Section: Discussionmentioning

confidence: 99%

Diversification of Root Hair Development Genes in Vascular Plants

et al. 2017

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“…The Fe, Mn or Pi starvation-induced formation of root hairs in positions normally occupied by non-hair cells (Perry et al, 2007) is indicative of a mechanism that induces the formation of ectopic hairs in response to restricted phyto-availability of immobile mineral nutrients. A number of studies have thus aimed to determine how such external cues affect the WER-based signaling pathway: because cell fate is decided by competition between the WER and CPC complexes, any changes that perturb this competition would alter the cell fate decisions at an early time point in the development of epidermal cells.…”

Section: Mechanisms Underlying the Plasticity Of Hair Cell Formationmentioning

confidence: 99%

The regulation and plasticity of root hair patterning and morphogenesis

2016

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Root hairs are highly specialized cells found in the epidermis of plant roots that play a key role in providing the plant with water and mineral nutrients. Root hairs have been used as a model system for understanding both cell fate determination and the morphogenetic plasticity of cell differentiation. Indeed, many studies have shown that the fate of root epidermal cells, which differentiate into either root hair or non-hair cells, is determined by a complex interplay of intrinsic and extrinsic cues that results in a predictable but highly plastic pattern of epidermal cells that can vary in shape, size and function. Here, we review these studies and discuss recent evidence suggesting that environmental information can be integrated at multiple points in the root hair morphogenetic pathway and affects multifaceted processes at the chromatin, transcriptional and post-transcriptional levels.

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“…The best characterized response is an increase in surface area by the formation of ectopic root hairs (Schmidt et al, 2000) and the development of hairs with bifurcated tips (two tips; Müller and Schmidt, 2004;Perry et al, 2007). Root growth rates are affected by iron deficiency as well, and whereas mild iron deficiency causes increased PR length, severe deficiency causes a strong reduction of PR and LR lengths (Gruber et al, 2013).…”

Section: Regulation Of Root Development In Response To Potassium and mentioning

confidence: 99%