Control of root cap maturation and cell detachment by BEARSKIN transcription factors in <i>Arabidopsis</i>

Kamiya, Masako; Higashio, Shin-Ya; Isomoto, Atsushi; Kim, Jong-Myong; Seki, Motoaki; Miyashima, Shunsuke; Nakajima, Keiji

doi:10.1242/dev.142331

Cited by 49 publications

(62 citation statements)

References 39 publications

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“…The BEARSKINs regulate maturation of the root cap with a related transcription factor SOMBRERO (Bennett et al , ). The expression pattern of BEARSKINs in Arabidopsis roots is similar to that of HORVU2Hr1G077320 in barley radicles (Kamiya et al , ). These are localized to the outermost root cap cell layers in Arabidopsis, where they regulate expression of genes involved in cell wall modification, cell separation, and root cap detachment.…”

Section: Resultsmentioning

confidence: 71%

“…These are localized to the outermost root cap cell layers in Arabidopsis, where they regulate expression of genes involved in cell wall modification, cell separation, and root cap detachment. These processes may mediate plant–rhizosphere interactions (Kamiya et al , ). The concordance with RNA in situ hybridization demonstrates the specificity of our LCM RNA‐seq analyses.…”

Section: Resultsmentioning

confidence: 99%

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Temporal tissue‐specific regulation of transcriptomes during barley (Hordeum vulgare) seed germination

et al. 2019

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The distinct functions of individual cell types require cells to express specific sets of genes. The germinating seed is an excellent model to study genome regulation between cell types since the majority of the transcriptome is differentially expressed in a short period, beginning from a uniform, metabolically inactive state. In this study, we applied laser-capture microdissection RNA-sequencing to small numbers of cells from the plumule, radicle tip and scutellum of germinating barley seeds every 8 h, over a 48 h time course. Tissue-specific gene expression was notably common; 25% (910) of differentially expressed transcripts in plumule, 34% (1876) in radicle tip and 41% (2562) in scutellum were exclusive to that organ. We also determined that tissue-specific storage of transcripts occurs during seed development and maturation. Co-expression of genes had strong spatiotemporal structure, with most co-expression occurring within one organ and at a subset of specific time points during germination. Overlapping and distinct enrichment of functional categories were observed in the tissue-specific profiles. We identified candidate transcription factors amongst these that may be regulators of spatiotemporal gene expression programs. Our findings contribute to the broader goal of generating an integrative model that describes the structure and function of individual cells within seeds during germination.

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Temporal tissue‐specific regulation of transcriptomes during barley (Hordeum vulgare) seed germination

et al. 2019

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“…In many plants, the cells of the peripheral part of the root cap are exfoliated and turn into the border cells that perform protective functions. Thus, the functions of the root cap are provided by a balanced proliferation of proximal meristematic cells and a regulated detachment of distal mature cells (Kamiya et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural Changes of Organelles in Root Cap Cells of Tobacco Under Salinity

Баранова

Chaban

Кононенко

et al. 2019

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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We investigated how an abiotic factor, i.e. salinity, affects specific intracellular organelles of cells of the root cap. We focused on: 1) amyloplasts, which are specific plastids of the cap that perform important metabolic and sensory functions; and 2) mitochondria, which protect cells from ROS damage by changing their ultrastructure. In our work we studied the ultrastructural changes of these organelles in different areas of the root cap under NaCl and Na2SO4 impact. We showed that the amyloplasts (statoliths) and mitochondria of the columella and the peripheral zone of the cap change their structural organisation in the presence of NaCl. Under action of Na2SO4, in plastids of columella the number of starch grains decreases dramatically, the cells of the peripheral part of the cap do not contain the amyloplasts, and the proplastids that do not store or store a little starch grains, which is attributed to leucoplasts with typical lamellae characteristic for root cortex cells. Thus, Na2SO4 influence has the most significant effect on the plastids of the root cap, and plastids of the cells of the peripheral zone of the cap are subjected to the most significant changes under salinity stress.

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“…Additionally, two types of proteins found in Q. grandiflora roots, the alpha-galactosidases, and polygalacturonases may regulate development by playing a role in cell wall loosening and, thereby, facilitating cell wall expansion [35, 36]. Besides, polygalacturonases play a crucial role in root cap development by degrading demethylated pectin allowing the natural sloughing off outer root cap cells [37]. Root caps are essential for root growth because they protect the root apical meristem as well as facilitates soil penetration and exploration.…”

Section: Discussionmentioning

confidence: 99%

Full title: Label free quantitative proteomics ofQualea grandifloraMart. (Vochysiaceae) roots indicates an aluminium requirement for growth and development

Rcc

Melo

et al. 2018

Preprint

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Aluminium in acid soils is a hindrance to crop growth. Nonetheless, Brazilian Cerrado possesses many species such asQualea grandiflora, which are adapted to acid soils with large amounts of Al and accumulate this metal in its tissues and organs. Nonetheless, the mechanisms involved in these processes are poorly understood, mainly at molecular level. Thus, a root proteomic analysis was accomplished to identify Al-responsive proteins inQ. grandifloraplants. Concomitantly, a root growth analysis of plants grown with and without Al supplementation was conducted to determine the effects of Al on the whole plant. Subsequently, proteins from both treatments were identified and quantified by LC-MS/MS in a label-free fashion. From the 2,520 identified proteins, 410 were differentially abundant between the two treatments, which were associated with carbohydrate metabolism, redox activity, stress response and catabolism of organic compounds. Furthermore, Al was crucial for the growth and development ofQ. grandiflora. In fact, this species may have an Al-dependent metabolism. Moreover, it was possible to correlate plant growth to Al-upregulated proteins that were directly involved in cell wall synthesis, oxidative phosphorylation, genetic information processing, and amino acid metabolism. Additionally, this work provides an extensive dataset of Al-regulated protein inQ. grandiflora, which will be crucial to understanding the functions of Al in this species.

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Control of root cap maturation and cell detachment by BEARSKIN transcription factors in Arabidopsis

Cited by 49 publications

References 39 publications

Temporal tissue‐specific regulation of transcriptomes during barley (Hordeum vulgare) seed germination

Temporal tissue‐specific regulation of transcriptomes during barley (Hordeum vulgare) seed germination

Ultrastructural Changes of Organelles in Root Cap Cells of Tobacco Under Salinity

Full title: Label free quantitative proteomics ofQualea grandifloraMart. (Vochysiaceae) roots indicates an aluminium requirement for growth and development

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