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https://www.readbyqxmd.com/read/28922768/accerbatin-a-small-molecule-at-the-intersection-of-auxin-and-reactive-oxygen-species-homeostasis-with-herbicidal-properties
#1
Yuming Hu, Thomas Depaepe, Dajo Smet, Klara Hoyerova, Petr Klíma, Ann Cuypers, Sean Cutler, Dieter Buyst, Kris Morreel, Wout Boerjan, José Martins, Jan Petrášek, Filip Vandenbussche, Dominique Van Der Straeten
The volatile two-carbon hormone ethylene acts in concert with an array of signals to affect etiolated seedling development. From a chemical screen, we isolated a quinoline carboxamide designated ACCERBATIN (AEX) that exacerbates the 1-aminocyclopropane-1-carboxylic acid-induced triple response, typical for ethylene-treated seedlings in darkness. Phenotypic analyses revealed distinct AEX effects including inhibition of root hair development and shortening of the root meristem. Mutant analysis and reporter studies further suggested that AEX most probably acts in parallel to ethylene signaling...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28921571/comparing-touch-senses-of-na%C3%A3-ve-and-expert-panels-through-treated-hair-swatches-which-associated-wordings-correlate-with-hair-physical-properties
#2
Anthony Galliano, Jean Yves Kempf, Maxime Fougere, Mara Applebaum, Leszek J Wolfram, Howard Maibach
OBJECTIVES: The study i) compared sense of touch between a naïve and an expert panels, under visual or blind conditions, using differently treated hair swatches, ii) explored possible common wordings used by both panels and their possible links with some physical properties of hairs. METHODS: Two sets of 15 hair swatches of Caucasian and Chinese origins were differently treated (bleached, permed, brushed, etc) or organized (root-tip vs tip-root). These were evaluated by tactile assessments by two panels (105 naïve consumers and 10 hair experts) under visual or blind conditions, in two geographic locations...
September 16, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28919165/validation-of-the-vectra-h1-portable-three-dimensional-photogrammetry-system-for-facial-imaging
#3
L Camison, M Bykowski, W W Lee, J C Carlson, J Roosenboom, J A Goldstein, J E Losee, S M Weinberg
Three-dimensional (3D) surface imaging using stereophotogrammetry has become increasingly popular in clinical settings, offering advantages for surgical planning and outcome evaluation. The handheld Vectra H1 is a low-cost, highly portable system that offers several advantages over larger stationary cameras, but independent technical validation is currently lacking. In this study, 3D facial images of 26 adult participants were captured with the Vectra H1 system and the previously validated 3dMDface system. Using error magnitude statistics, 136 linear distances were compared between cameras...
September 14, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28914451/pilomatrix-carcinoma-a-10-year-review-of-the-literature
#4
REVIEW
Christopher Jones, Mark Twoon, Weiguang Ho, Mark Portelli, Bernard Robertson, William Anderson
Pilomatrixoma, also known as calcifying epithelioma of Malherbe, is a superficial benign skin tumour arising from hair follicle matrix cells (1,2) usually located in the head or neck region (1). It was first described in 1880 by Malherbe and Chenantais as a calcified epithelioma of sebaceous origin. In 1961, Forbis and Helwig proposed the term pilomatrixoma after establishing that the lesion actually originated from the outer root sheath cell of hair follicles (3-5).
September 15, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28913895/nramp2-a-trans-golgi-network-localized-manganese-transporter-is-required-for-arabidopsis-root-growth-under-manganese-deficiency
#5
Huiling Gao, Wenxiang Xie, Changhong Yang, Jingyi Xu, Jingjun Li, Hua Wang, Xi Chen, Chao-Feng Huang
To cope with manganese (Mn) deficiency, plants have evolved an efficient transport system to uptake and redistribute Mn. However, the underlying molecular mechanisms remain to be demonstrated. We carried out a forward genetic screen in a root high-affinity Mn transporter nramp1 mutant background in Arabidopsis thaliana and identified an uncharacterized Mn transport NRAMP2. We investigated the effect of nramp2 mutation on root growth and reactive oxygen species (ROS) accumulation and we also examined the NRAMP2 expression pattern, and the subcellular localization and transport activity of NRAMP2...
September 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/28912796/a-low-cost-imaging-method-for-the-temporal-and-spatial-colorimetric-detection-of-free-amines-on-maize-root-surfaces
#6
Truc H Doan, Tu A Doan, Michael J Kangas, AdreAnna E Ernest, Danny Tran, Christina L Wilson, Andrea E Holmes, Erin L Doyle, Tessa L Durham Brooks
Plant root exudates are important mediators in the interactions that occur between plants and microorganisms in the soil, yet much remains to be learned about spatial and temporal variation in their production. This work outlines a method utilizing a novel colorimetric paper to detect spatial and temporal changes in the production of nitrogen-containing compounds on the root surface. While existing methods have made it possible to conduct detailed analysis of root exudate composition, relatively less is known about where in the root system exudates are produced and how this localization changes as the root grows...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28912581/secretory-phospholipase-a2-iia-overexpressing-mice-exhibit-cyclic-alopecia-mediated-through-aberrant-hair-shaft-differentiation-and-impaired-wound-healing-response
#7
Gopal L Chovatiya, Rahul M Sarate, Raghava R Sunkara, Nilesh P Gawas, Vineet Kala, Sanjeev K Waghmare
Secretory phospholipase A2 Group-IIA (sPLA2-IIA) is involved in lipid catabolism and growth promoting activity. sPLA2-IIA is deregulated in many pathological conditions including various cancers. Here, we have studied the role of sPLA2-IIA in the development of cyclic alopecia and wound healing response in relation to complete loss of hair follicle stem cells (HFSCs). Our data showed that overexpression of sPLA2-IIA in homozygous mice results in hyperproliferation and terminal epidermal differentiation followed by hair follicle cycle being halted at anagen like stage...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911019/early-arabidopsis-root-hair-growth-stimulation-by-pathogenic-strains-of-pseudomonas-syringae
#8
Tamara Pecenková, Martin Janda, Jitka Ortmannová, Vladimíra Hajná, Zuzana Stehlíková, Viktor Žárský
Background and Aims: Selected beneficial Pseudomonas spp. strains have the ability to influence root architecture in Arabidopsis thaliana by inhibiting primary root elongation and promoting lateral root and root hair formation. A crucial role for auxin in this long-term (1week), long-distance plant-microbe interaction has been demonstrated. Methods: Arabidopsis seedlings were cultivated in vitro on vertical plates and inoculated with pathogenic strains Pseudomonas syringae pv...
September 1, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28910707/spectral-phasor-analysis-reveals-altered-membrane-order-and-function-of-root-hair-cells-in-arabidopsis-dry2-sqe1-5-drought-hypersensitive-mutant
#9
Florencia Sena, Mariana Sotelo-Silveira, Soledad Astrada, Miguel A Botella, Leonel Malacrida, Omar Borsani
Biological membranes allow the regulation of numerous cellular processes, which are affected when unfavorable environmental factors are perceived. Lipids and proteins are the principal components of biological membranes. Each lipid has unique biophysical properties, and, therefore the lipid composition of the membrane is critical to maintaining the bilayer structure and functionality. Membrane composition and integrity are becoming the focus of studies aiming to understand how plants adapt to its environment...
August 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28871850/succinoglycan-production-contributes-to-acidic-ph-tolerance-in-sinorhizobium-meliloti-rm1021
#10
Justin P Hawkins, Barney A Geddes, Ivan John Oresnik
In this work, the hypothesis that exopolysaccharide plays a role in the survival of S. meliloti at low pH is addressed. When S. meliloti was grown at pH 5.75 the synthesis of succinoglycan increased, whereas the synthesis of galactoglucan decreased. Succinoglycan that was isolated from cultures grown at low pH had a lower degree of polymerization relative to that which was isolated from cultures grown at neutral pH, suggesting that low molecular weight (LMW) succinoglycan might play a role in adaptation to low pH...
September 5, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28869926/outer-inner-and-planar-polarity-in-the-arabidopsis-root
#11
REVIEW
Moritaka Nakamura, Markus Grebe
Plant roots control uptake of water and nutrients and cope with environmental challenges. The root epidermis provides the first selective interface for nutrient absorption, while the endodermis produces the main apoplastic diffusion barrier in the form of a structure called the Casparian strip. The positioning of root hairs on epidermal cells, and of the Casparian strip around endodermal cells, requires asymmetries along cellular axes (cell polarity). Cell polarity is termed planar polarity, when coordinated within the plane of a given tissue layer...
September 1, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28857383/a-human-serum-enriched-medium-formulation-supports-high-viability-and-marker-expression-in-primary-melanocyte-cultures-from-the-outer-root-sheath-and-epidermis
#12
Marie Schneider, Andrea Lohrenz, Michael Cross, Michael C Hacker, Jan C Simon, Vuk Savkovic
Formulating clinically relevant melanocyte cultivation media that maintain the balance between proliferation and maturation to functional melanocytes is a major experimental and regulatory challenge. Within the translation of human melanocytes from the outer root sheath of human hair follicle (HUMORS), we developed a melanocyte medium free of chemical mitogens, chemical melanogenesis enhancers and bovine products, enabling proliferation as well as melanotic differentiation. The formulation involved the replacement of bovine pituitary extract (BPE) and bovine serum (FBS) with human serum (HS) combined with ascorbic acid, CaCl2, epinephrine, L glutamine, insulin and fibroblast growth factor...
August 31, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28840786/type-iii-secretion-dependent-and-independent-phenotypes-caused-by-ralstonia-solanacearum-in-arabidopsis-roots
#13
Haibin Lu, Saul Lema, Marc Planas, Alejandro Alonso, Marc Valls, Nuria Sanchez Coll
The causing agent of bacterial wilt, Ralstonia solanacearum, is a soilborne pathogen that invades plants through their roots, traversing many tissue layers until it reaches the xylem, where it multiplies and causes plant collapse. The effects of R. solanacearum infection are devastating and no effective approach to fight the disease is so far available. The early steps of infection, essential for colonization, as well as the early plant defense responses, remain mostly unknown. Here, we have set up a simple in vitro Arabidopsis-R...
August 25, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28837399/enhancement-of-cell-wall-protein-srpp-expression-during-emergent-root-hair-development-in-arabidopsis
#14
Hiroshi Uno, Natsuki Tanaka-Takada, Ryosuke Sato, Masayoshi Maeshima
SRPP is a protein expressed in seeds and root hairs and is significantly induced in root hairs under phosphate (Pi)-deficient conditions. Root hairs in the knockout mutant srpp-1 display defects, i.e., suppression of cell growth and cell death. Here, we analyzed the expression profile of SRPP during cell elongation of root hairs and compared the transcript levels in several mutants with short root hairs. The mRNA level was increased in wild-type plants and decreased in mutants with short root hairs. Induction of SRPP expression by Pi starvation occurred 1 or 2 days later than induction of Pi-deficient sensitive genes, such as PHT1 and PHF1...
August 24, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28836997/ethnomedicinal-plants-used-by-local-inhabitants-of-jakholi-block-rudraprayag-district-western-himalaya-india
#15
Ankit Singh, Mohan C Nautiyal, Ripu M Kunwar, Rainer W Bussmann
BACKGROUND: Ethnomedicinal knowledge of the Indian Himalayas is very interesting because of the wide range of medicinal plants used in traditional medical practice. However, there is a danger of knowledge being lost because the knowledge sharing is very limited and passed on orally. The present study is the first ethnomedicinal study in Jakholi area of Rudraprayag district of Northwestern India. The aim of present study was to identify traditional medicinal plants used by the inhabitants to treat different ailments and document the associated knowledge of these medicinal plants...
August 24, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28830338/a-major-qtl-on-chromosome-7hs-controls-the-response-of-barley-seedling-to-salt-stress-in-the-nure%C3%A2-%C3%A3-%C3%A2-tremois-population
#16
Wentao Xue, Jun Yan, Gang Zhao, Yan Jiang, Jianping Cheng, Luigi Cattivelli, Alessandro Tondelli
BACKGROUND: Seedling establishment is a crucial and vulnerable stage in the crop life cycle which determines further plant growth. While many studies are available on salt tolerance at the vegetative stage, the mechanisms and genetic bases of salt tolerance during seedling establishment have been poorly investigated. Here, a novel and accurate phenotyping protocol was applied to characterize the response of seedlings to salt stress in two barley cultivars (Nure and Tremois) and their double-haploid population...
August 22, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28830102/transcriptional-regulatory-network-of-wox11-is-involved-in-the-control-of-crown-root-development-cytokinin-signals-and-redox-in-rice
#17
Wei Jiang, Shaoli Zhou, Qian Zhang, Huazhi Song, Dao-Xiu Zhou, Yu Zhao
The rice root system is mainly composed of post-embryonic shoot-borne roots called crown roots. WOX11, encoding a WUSCHEL-related homeobox domain transcription factor, is a key regulator of crown root growth and development in rice (Oryza sativa. L). In addition to specifically activating crown root development, WOX11 is also involved in lateral root initiation, root hair formation, and abiotic stresses. However, the gene regulatory network downstream of WOX11 remains largely unknown. Here, we studied the transcriptome of wox11 root tips by RNA-Seq and determined direct WOX11-binding targets by bioinformatic and biochemical analysis...
May 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28829431/imaging-the-root-hair-morphology-of-arabidopsis-seedlings-in-a-two-layer-microfluidic-platform
#18
Jayde A Aufrecht, Jennifer M Ryan, Sahar Hasim, David P Allison, Andreas Nebenführ, Mitchel J Doktycz, Scott T Retterer
Root hairs increase root surface area for better water uptake and nutrient absorption by the plant. Because they are small in size and often obscured by their natural environment, root hair morphology and function are difficult to study and often excluded from plant research. In recent years, microfluidic platforms have offered a way to visualize root systems at high resolution without disturbing the roots during transfer to an imaging system. The microfluidic platform presented here builds on previous plant-on-a-chip research by incorporating a two-layer device to confine the Arabidopsis thaliana main root to the same optical plane as the root hairs...
August 15, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28822179/-research-of-genes-expression-related-to-ginsenosides-biosynthesis-by-methyl-jasmonic-acid-in-ginseng-hair-roots
#19
Kang-Yu Wang, Li-Li Yu, Mei-Ping Zhang, Rui Yin, Yan-Ping Lin, Ming-Zhu Zhao, Chun-Yu Sun, Yi Wang
In order to obtain the expression of ginsenoside biosynthetic pathway related enzyme gene in ginseng hairy root under the control of elicitors, methyl jasmonate (MeJA) was added exogenously as elicitors. Ginseng hairy root clones induced by 4-year-old ginseng root was used as material, total saponin content in ginseng hairy root before and after MeJA treatment was determined by vanillin-sulfuric acid colorimetry, Meanwhile, relative expression of squalene synthase genes, squalene epoxidase genes, oxidized squalene cyclase genes, dammarenediol synthase genes, β-amyrin synthase genes, cycloartenol synthase genes before and after MeJA treatment were determined by Real-time PCR...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28820887/identification-of-putative-qtls-for-seedling-stage-phosphorus-starvation-response-in-finger-millet-eleusine-coracana-l-gaertn-by-association-mapping-and-cross-species-synteny-analysis
#20
M Ramakrishnan, S Antony Ceasar, K K Vinod, V Duraipandiyan, T P Ajeesh Krishna, Hari D Upadhyaya, N A Al-Dhabi, S Ignacimuthu
A germplasm assembly of 128 finger millet genotypes from 18 countries was evaluated for seedling-stage phosphorus (P) responses by growing them in P sufficient (Psuf) and P deficient (Pdef) treatments. Majority of the genotypes showed adaptive responses to low P condition. Based on phenotype behaviour using the best linear unbiased predictors for each trait, genotypes were classified into, P responsive, low P tolerant and P non-responsive types. Based on the overall phenotype performance under Pdef, 10 genotypes were identified as low P tolerants...
2017: PloS One
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