keyword
MENU ▼
Read by QxMD icon Read
search

Trichome

keyword
https://www.readbyqxmd.com/read/28644898/spatio-temporal-orientation-of-microtubules-controls-conical-cell-shape-in-arabidopsis-thaliana-petals
#1
Huibo Ren, Xie Dang, Xianzhi Cai, Peihang Yu, Yajun Li, Shanshan Zhang, Menghong Liu, Binqing Chen, Deshu Lin
The physiological functions of epidermal cells are largely determined by their diverse morphologies. Most flowering plants have special conical-shaped petal epidermal cells that are thought to influence light capture and reflectance, and provide pollinator grips, but the molecular mechanisms controlling conical cell shape remain largely unknown. Here, we developed a live-confocal imaging approach to quantify geometric parameters of conical cells in Arabidopsis thaliana (A.thaliana). Through genetic screens, we identified katanin (KTN1) mutants showing a phenotype of decreased tip sharpening of conical cells...
June 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28644726/cytotoxic-and-genotoxic-actions-of-casiopeina-iii-ea-cas-iii-ea-in-somatic-and-germ-cells-of-drosophila-melanogaster
#2
L M Vidal, E Pimentel, M P Cruces, S Hernández, L Ruiz-Azuara
Casiopeinas® are a group of newly synthesized drugs designed to treat cancer. These copper (Cu) complexes exhibit cytostatic, cytotoxic, genotoxic, and antineoplastic activities through different mechanisms of action. To evaluate the influence of these compounds, some in vivo studies were performed using predominantly somatic cells. The aim of the present study was to examine the cytotoxic and genotoxic actions of Casiopeina III-Ea (Cas III-Ea) in somatic as well as germ cells of Drosophila melanogaster. For cytotoxicity, the productivity and some morphometric parameters were measured and genotoxicity was assessed by means of the somatic mutation and recombination test assay in the wing...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28641371/effects-of-changes-in-leaf-properties-mediated-by-methyl-jasmonate-meja-on-foliar-absorption-of-zn-mn-and-fe
#3
Cui Li, Peng Wang, Neal W Menzies, Enzo Lombi, Peter M Kopittke
Background and Aims: Foliar fertilization to overcome nutritional deficiencies is becoming increasingly widespread. However, the processes of foliar nutrient absorption and translocation are poorly understood. The present study aimed to investigate how cuticular leaf properties affect the absorption of foliar-applied nutrients in leaf tissues. Methods: Given that methyl jasmonate (MeJA) can cause alterations in leaf properties, we applied 1 m m MeJA to sunflower ( Helianthus annuus ), tomato ( Solanum lycopersicum ) and soybean ( Glycine max ) to assess changes in leaf properties...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28636198/actin-filament-reorganisation-controlled-by-the-scar-wave-complex-mediates-stomatal-response-to-darkness
#4
Jean-Charles Isner, Zaoxu Xu, Joaquim Miguel Costa, Fabien Monnet, Thomas Batstone, Xiaobin Ou, Michael J Deeks, Bernard Genty, Kun Jiang, Alistair M Hetherington
Stomata respond to darkness by closing to prevent excessive water loss during the night. Although the reorganisation of actin filaments during stomatal closure is documented, the underlying mechanisms responsible for dark-induced cytoskeletal arrangement remain largely unknown. We used genetic, physiological and cell biological approaches to show that reorganisation of the actin cytoskeleton is required for dark-induced stomatal closure. The opal5 mutant does not close in response to darkness but exhibits wild-type (WT) behaviour when exposed to abscisic acid (ABA) or CaCl2 ...
June 21, 2017: New Phytologist
https://www.readbyqxmd.com/read/28634808/mapping-of-genetic-locus-for-leaf-trichome-in-brassica-oleracea
#5
Jiaqin Mei, Jinhua Wang, Yuehua Li, Shuai Tian, Dayong Wei, Chaoguo Shao, Jun Si, Qing Xiong, Jiana Li, Wei Qian
The genetic locus for leaf trichome was identified via marker-based mapping and SNP microarray assay, and a functional marker was developed to facilitate the breeding for hairiness in Brassica oleracea. Plant trichomes are involved in various functions particularly in protecting plants against some biotic and abiotic damages. In the present study, an F2 segregating population was developed from the cross between a glabrous cultivated B. oleracea (CC, 2n = 18) and a hairy wild relative, B. incana (CC, 2n = 18)...
June 20, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28633407/exploring-fungus-plant-n-transfer-in-a-tripartite-ant-plant-fungus-mutualism
#6
Céline Leroy, Alain Jauneau, Yves Martinez, Armelle Cabin-Flaman, David Gibouin, Jérôme Orivel, Nathalie Séjalon-Delmas
Background and Aims: The plant Hirtella physophora , the ant Allomerus decemarticulatus and a fungus, Trimmatostroma sp., form a tripartite association. The ants manipulate both the plant trichomes and the fungus to build galleries under the stems of their host plant used to capture prey. In addition to its structural role, the fungus also improves nutrient uptake by the host plant. But it still remains unclear whether the fungus plays an indirect or a direct role in transferring nutrients to the plant...
June 13, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28628172/trichomes-as-a-natural-biophysical-barrier-for-plants-and-their-bioinspired-applications
#7
Han Liu, Shaobao Liu, Jiaojiao Jiao, Tian Jian Lu, Feng Xu
Nature has inspired mankind to create novel inventions with biomimetic structures and materials, where plants provide a significant source of inspiration. Plants have evolved a range of effective appendages, among which trichomes have attracted extensive research interest due to their enormous functions. It is important to understand trichome functions and corresponding mechanisms for their bioinspired applications. In this review, we provide a comprehensive overview of the diverse functions of trichomes, with emphasis placed upon their roles as biophysical barriers that can create a complex three-dimensional (3D) network to help the plant adapt to severe environments...
June 19, 2017: Soft Matter
https://www.readbyqxmd.com/read/28606082/expression-and-functional-analyses-of-a-kinesin-gene-ghkis13a1-from-cotton-gossypium-hirsutum-fiber
#8
Yan-Jun Li, Shou-Hong Zhu, Xin-Yu Zhang, Yong-Chang Liu, Fei Xue, Lan-Jie Zhao, Jie Sun
BACKGROUND: Cotton fiber, a natural fiber widely used in the textile industry, is differentiated from single cell of ovule epidermis. A large number of genes are believed to be involved in fiber formation, but so far only a few fiber genes have been isolated and functionally characterized in this developmental process. The Kinesin13 subfamily was found to play key roles during cell division and cell elongation, and was considered to be involved in the regulation of cotton fiber development...
June 12, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28600533/variation-in-tree-species-ability-to-capture-and-retain-airborne-fine-particulate-matter-pm2-5
#9
Lixin Chen, Chenming Liu, Lu Zhang, Rui Zou, Zhiqiang Zhang
Human health risks caused by PM2.5 raise awareness to the role of trees as bio-filters of urban air pollution, but not all species are equally capable of filtering the air. The objectives of this current study were: (1) to determine the foliar traits for effective PM2.5-capture and (2) explore species-to-species differences in foliar PM2.5-recapture capacity following a rain event. The study concluded that overall, the acicular needle shape made conifers more efficient with PM2.5 accumulation and post-rainfall recapture than broadleaved species...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28597435/micro-morphological-study-of-evolvulus-spp-convolvulaceae-the-old-world-medicinal-plants
#10
Kanapol Ketjarun, George W Staples, Sasivimon C Swangpol, Paweena Traiperm
BACKGROUND: Several medicinal properties have been reported for plants in the genus Evolvulus, such as a brain tonic and antifungal from Evolvulus alsinoides, and a sedative and an anthelmintic from Evolvulus nummularius. Therefore, the correct identification of the source plants is critically important. The aim of this research was to investigate the micromorphology of two Evolvulus taxa used for herbal medicines compared with one worldwide ornamental species by using peeling, paraffin embedding, acetolysis, and SEM methods in order to support species identification...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28587634/sinapic-acid-or-its-derivatives-interfere-with-abscisic-acid-homeostasis-during-arabidopsis-thaliana-seed-germination
#11
Baodi Bi, Jingliang Tang, Shuang Han, Jinggong Guo, Yuchen Miao
BACKGROUND: Sinapic acid and its esters have broad functions in different stages of seed germination and plant development and are thought to play a role in protecting against ultraviolet irradiation. To better understand the interactions between sinapic acid esters and seed germination processes in response to various stresses, we analyzed the role of the plant hormone abscisic acid (ABA) in the regulation of sinapic acid esters involved in seed germination and early seedling growth...
June 6, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28577195/identification-among-morphologically-similar-argyreia-convolvulaceae-based-on-leaf-anatomy-and-phenetic-analyses
#12
Paweena Traiperm, Janene Chow, Possathorn Nopun, G Staples, Sasivimon C Swangpol
BACKGROUND: The genus Argyreia Lour. is one of the species-rich Asian genera in the family Convolvulaceae. Several species complexes were recognized in which taxon delimitation was imprecise, especially when examining herbarium materials without fully developed open flowers. The main goal of this study is to investigate and describe leaf anatomy for some morphologically similar Argyreia using epidermal peeling, leaf and petiole transverse sections, and scanning electron microscopy. Phenetic analyses including cluster analysis and principal component analysis were used to investigate the similarity of these morpho-types...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28569138/identification-of-candidate-genes-for-fiber-length-quantitative-trait-loci-through-rna-seq-and-linkage-and-physical-mapping-in-cotton
#13
Xihua Li, Man Wu, Guoyuan Liu, Wenfeng Pei, Honghong Zhai, Jiwen Yu, Jinfa Zhang, Shuxun Yu
BACKGROUND: Cotton (Gossypium spp.) fibers are single-celled elongated trichomes, the molecular aspects of genetic variation in fiber length (FL) among genotypes are currently unknown. In this study, two backcross inbred lines (BILs), i.e., NMGA-062 ("Long") and NMGA-105 ("Short") with 32.1 vs. 27.2 mm in FL, respectively, were chosen to perform RNA-Seq on developing fibers at 10 days post anthesis (DPA). The two BILs differed in 4 quantitative trait loci (QTL) for FL and were developed from backcrosses between G...
May 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28553862/the-possible-protective-effect-of-l-arginine-against-5-fluorouracil-induced-nephrotoxicity-in-male-albino-rats
#14
Mohamed H Badawoud, Eman B Elshal, Azza I Zaki, Hanan A Amin
5-fluorouracil (5-FU) is a potent antineoplastic agent used for the treatment of various malignancies. The L-argininenitric oxide (NO) pathway involved in the pathogenesis of chemotherapy induced kidney damage. This work investigated the beneficial mechanism of L-arginine supplementation in 5 FU induced nephropathy. Eighty male Wistar rats were divided into four equal groups: Control group; L-arginine group (378 mg/rat /day for 4 weeks); 5-FU group (189 mg/rat/week for 4 weeks) and L-arginine for one week before and 4 weeks concomitant with 5-FU group...
May 29, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28550014/distributions-of-mutational-effects-and-the-estimation-of-directional-selection-in-divergent-lineages-of-arabidopsis-thaliana
#15
Briton Park, Matthew T Rutter, Charles B Fenster, V Vaughan Symonds, Mark C Ungerer, Jeffrey P Townsend
Mutations are crucial to evolution, providing the ultimate source of variation on which natural selection acts. Due to their key role, the distribution of mutational effects on quantitative traits is a key component to any inference regarding historical selection on phenotypic traits. In this paper, we expand on a previously developed test for selection that could be conducted assuming a Gaussian mutation effect distribution by developing approaches to also incorporate any of a family of heavy-tailed Laplace distributions of mutational effects...
May 26, 2017: Genetics
https://www.readbyqxmd.com/read/28548035/scanning-electron-microscopy-coupled-with-energy-dispersive-spectrometric-analysis-reveals-for-the-first-time-weddellite-and-sylvite-crystals-on-the-surface-of-involucral-bracts-and-petals-of-two-xeranthemum-l-compositae-species
#16
Milan Gavrilović, Suzana Erić, Petar D Marin, Núria Garcia-Jacas, Alfonso Susanna, Pedja Janaćković
In this work, weddellite and sylvite crystals are identified for the first time on the involucral bracts and petals of Xeranthemum annuum and Xeranthemum cylindraceum using scanning electron microscopy coupled with energy dispersive spectrometric (SEM-EDS) analysis. Well-developed crystals of weddellite (CaC2O4·2H2O) occur in the form of a tetragonal bipyramid (hhl), rarely in combination of a bipyramid and tetragonal prism (h00). Indumentum of involucral bracts of X. cylindraceum consists of nonglandular and glandular trichomes...
June 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28535196/characterization-of-antixenosis-in-soybean-genotypes-to-bemisia-tabaci-hemiptera-aleyrodidae-biotype-b
#17
E L L Baldin, P L Cruz, R Morando, I F Silva, J P F Bentivenha, L R S Tozin, T M Rodrigues
Bemisia tabaci biotype B (Gennadius) is one of the most important soybean pest worldwide. Herein, 15 soybean genotypes were evaluated, to characterize the occurrence of antixenosis to B. tabaci biotype B. Initially, a multiple-choice test with all genotypes was carried out, evaluating the settling and oviposition preference at 3 d after infestation, and the colonization by nymphs after 48 d of infestation. Subsequently, a no-choice test, using 14 genotypes, was conducted with infested plants individually, and the number of eggs was counted after 72 h...
May 23, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28533790/aapdr3-a-pdr-transporter-3-is-involved-in-sesquiterpene-%C3%AE-caryophyllene-transport-in-artemisia-annua
#18
Xueqing Fu, Pu Shi, Qian He, Qian Shen, Yueli Tang, Qifang Pan, Yanan Ma, Tingxiang Yan, Minghui Chen, Xiaolong Hao, Pin Liu, Ling Li, Yuliang Wang, Xiaofen Sun, Kexuan Tang
Artemisinin, a sesquiterpenoid endoperoxide, isolated from the plant Artemisia annua L., is widely used in the treatment of malaria. Another sesquiterpenoid, β-caryophyllene having antibiotic, antioxidant, anticarcinogenic and local anesthetic activities, is also presented in A. annua. The role played by sesquiterpene transporters in trichomes and accumulation of these metabolites is poorly understood in A. annua and in trichomes of other plant species. We identified AaPDR3, encoding a pleiotropic drug resistance (PDR) transporter located to the plasma membrane from A...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28528483/fossil-record-of-ephedra-in-the-lower-cretaceous-aptian-argentina
#19
Gabriela G Puebla, Ari Iglesias, María A Gómez, Mercedes B Prámparo
Fossil plants from the Lower Cretaceous (upper Aptian) of the La Cantera Formation, Argentina, are described. The fossils studied represent a leafy shooting system with several orders of articulated and striated axes and attached leaves with unequivocal ephedroid affinity. We also found associated remains of ovulate cones with four whorls of sterile bracts, which contain two female reproductive units (FRU). Ovulate cone characters fit well within the genus Ephedra. Special characters in the ovulate cones including an outer seed envelope with two types of trichomes, allowed us to consider our remains as a new Ephedra species...
May 20, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28520744/indoor-simulations-reveal-differences-among-plant-species-in-capturing-particulate-matter
#20
Jungang Chen, Xinxiao Yu, Huaxing Bi, Yanlin Fu
A number of studies have focused on the capacity of urban trees and shrubs to serve as efficient biological filters to mitigate air pollution. In this study, five different tree species were assessed for this function. Kerria japonica, Sophora japonica, Philadelphus pekinensis, Gleditsia sinensis, and Prunus persica 'Atropurpurea' were tested in a deposition chamber using (NH4)2SO4 particles. We quantified and compared the capability of all tested trees to remove particles by assessing deposition velocity, a measure of the ability to remove particles...
2017: PloS One
keyword
keyword
106179
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"