keyword
MENU ▼
Read by QxMD icon Read
search

plant regeneration

keyword
https://www.readbyqxmd.com/read/27912029/how-to-establish-a-bioregenerative-life-support-system-for-long-term-crewed-missions-to-the-moon-or-mars
#1
Yuming Fu, Leyuan Li, Beizhen Xie, Chen Dong, Mingjuan Wang, Boyang Jia, Lingzhi Shao, Yingying Dong, Shengda Deng, Hui Liu, Guanghui Liu, Bojie Liu, Dawei Hu, Hong Liu
To conduct crewed simulation experiments of bioregenerative life support systems on the ground is a critical step for human life support in deep-space exploration. An artificial closed ecosystem named Lunar Palace 1 was built through integrating efficient higher plant cultivation, animal protein production, urine nitrogen recycling, and bioconversion of solid waste. Subsequently, a 105-day, multicrew, closed integrative bioregenerative life support systems experiment in Lunar Palace 1 was carried out from February through May 2014...
December 2, 2016: Astrobiology
https://www.readbyqxmd.com/read/27898767/genotyping-by-sequencing-on-pooled-samples-and-its-use-in-measuring-segregation-bias-during-the-course-of-androgenesis-in-barley
#2
Sébastien Bélanger, Patricio Esteves, Isabelle Clermont, Martine Jean, François Belzile
Estimation of allelic frequencies is often required in breeding but genotyping many individuals at many loci can be expensive. We have developed a genotyping-by-sequencing (GBS) approach for estimating allelic frequencies on pooled samples (Pool-GBS) and used it to examine segregation distortion in doubled haploid (DH) populations of barley ( L.). In the first phase, we genotyped each line individually and exploited these data to explore a strategy to call single nucleotide polymorphisms (SNPs) on pooled reads...
March 2016: Plant Genome
https://www.readbyqxmd.com/read/27896555/methyl-jasmonate-induced-monoterpenes-in-scots-pine-and-norway-spruce-tissues-affect-pine-weevil-orientation
#3
Lina Lundborg, Göran Nordlander, Niklas Björklund, Henrik Nordenhem, Anna-Karin Borg-Karlson
In large parts of Europe, insecticide-free measures for protecting conifer plants are desired to suppress damage by the pine weevil Hylobius abietis (L.). Treatment with methyl jasmonate (MeJA), a chemical elicitor already used in crop production, may enhance expression of chemical defenses in seedlings in conifer regenerations. However, in a previous experiment, MeJA treatment resulted in substantially better field protection for Scots pine (Pinus sylvestris L.) than for Norway spruce (Picea abies (L.) Karst...
November 28, 2016: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/27895202/the-lbd12-1-transcription-factor-suppresses-apical-meristem-size-by-repressing-argonaute-10-expression
#4
Weiwei Ma, Fuqing Wu, Peike Sheng, Xiaole Wang, Zhe Zhang, Kunneng Zhou, Huan Zhang, Jinlong Hu, Qibing Lin, Zhijun Cheng, Jiulin Wang, Shanshan Zhu, Xin Zhang, Xiuping Guo, Haiyang Wang, Chuanyin Wu, Jianmin Wan
The shoot apical meristem (SAM) consists of a population of multipotent cells that generate all aerial structures and regenerates itself. SAM maintenance and lateral organ development are regulated by several complex signaling pathways, in which the Argonaute gene mediated pathway plays a key role. One Argonaute gene, AGO10, functions as a miRNA locker that attenuates miR165/166 activity and positively regulates shoot apical meristem development, but little is known about when and how AGO10 is regulated at the transcriptional level...
November 28, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27870043/increased-seedling-establishment-via-enemy-release-at-the-upper-elevational-range-limit-of-sugar-maple
#5
Morgane Urli, Carissa D Brown, Rosela Narváez Perez, Pierre-Luc Chagnon, Mark Vellend
The enemy release hypothesis is frequently invoked to explain invasion by nonnative species, but studies focusing on the influence of enemies on natural plant range expansion due to climate change remain scarce. We combined multiple approaches to study the influence of plant-enemy interactions on the upper elevational range limit of sugar maple (Acer saccharum) in southeastern Québec, Canada, where a previous study had demonstrated intense seed predation just beyond the range limit. Consistent with the hypothesis of release from natural enemies at the range limit, data from both natural patterns of regeneration and from seed and seedling transplant experiments showed higher seedling densities at the range edge than in the core of the species' distribution...
November 2016: Ecology
https://www.readbyqxmd.com/read/27870036/seedling-performance-covaries-with-dormancy-thresholds-maintaining-cryptic-seed-heteromorphism-in-a-fire-prone-system
#6
Ganesha S Liyanage, David J Ayre, Mark K J Ooi
The production of morphologically different seeds or fruits by the same individual plant is known as seed heteromorphism. Such variation is expected to be selected for in disturbance-prone environments to allow germination into inherently variable regeneration niches. However, there are few demonstrations that heteromorphic seed characteristics should be favored by selection or how they may be maintained. In fire-prone ecosystems, seed heteromorphism is found in the temperatures needed to break physical dormancy, with seeds responding to high or low temperatures, ensuring emergence under variable fire-regime-related soil heating...
November 2016: Ecology
https://www.readbyqxmd.com/read/27865796/bletilla-striata-medicinal-uses-phytochemistry-and-pharmacological-activities
#7
REVIEW
Xirui He, Jiacheng Fang, Xiaoxiao Wang, Zefeng Zhao, Yu Chang, Hao Guo, Linhong Huang
ETHNOPHARMACOLOGICAL RELEVANCE: Bletilla striata (Thunb.) Reichb. f. (Orchidaceae), also known as Hyacinth Orchid and Baiji (Simplified Chinese: ), not only has been widely used for the treatment of hematemesis, hemoptysis, and traumatic bleeding due to the efficacy of arresting bleeding with astringent action, but also has been applied topically to overcome ulcers, sores, swellings, and chapped skin due to the efficacy of dispersing swelling and promoting tissue regeneration. Additional medical applications include the treatment of tuberculosis, malignant ulcers, hemorrhoids, anthrax, eye diseases, and silicosis...
November 16, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27864112/polar-extracts-from-the-berry-like-fruits-of-hypericum-androsaemum-l-as-a-promising-ingredient-in-skin-care-formulations
#8
Fabiana Antognoni, Mariacaterina Lianza, Ferruccio Poli, Michela Buccioni, Claudia Santinelli, Giovanni Caprioli, Romilde Iannarelli, Giulio Lupidi, Elisabetta Damiani, Daniela Beghelli, Alessia Alunno, Filippo Maggi
ETHNOPHARMACOLOGICAL RELEVANCE: The top flowering aerial parts of the Hypericum species are traditionally used to prepare ointments to heal cuts and burns. Sometimes even the fruits are used for these purposes. Hypericum androsaemum L., commonly known as tutsan or shrubby St. John's Wort, is a Mediterranean medicinal plant which has been traditionally used to prepare an ointment for treating cuts and wounds. AIM OF THE STUDY: To evaluate the extracts obtained from H...
November 15, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27859363/the-transcription-factor-obp4-controls-root-growth-and-promotes-callus-formation
#9
Elena Ramirez-Parra, Juan Perianez-Rodriguez, Sara Navarro-Neila, Inmaculada Gude, Miguel A Moreno-Risueno, Juan C Del Pozo
Plant growth and development require a continuous balance between cell division and differentiation. In root meristems, differentiated cells acquire specialized functions, losing their mitotic potential. Some plant cells, such as pericycle cells, have a remarkable plasticity to regenerate new organs. The molecular mechanisms underlying cell reprogramming are not completely known. In this work, a functional screening of transcription factors identified Arabidopsis OBP4 (OBF Binding Protein 4) as a novel regulator of root growth and cell elongation and differentiation...
November 17, 2016: New Phytologist
https://www.readbyqxmd.com/read/27859154/generalist-birds-promote-tropical-forest-regeneration-and-increase-plant-diversity-via-rare-biased-seed-dispersal
#10
Tomás A Carlo, Juan M Morales
Regenerated forests now compose over half of the world's tropical forest cover and are increasingly important as providers of ecosystem services, freshwater, and biodiversity conservation. Much of the value and functionality of regenerating forests depends on the plant diversity they contain. Tropical forest diversity is strongly shaped by mutualistic interactions between plants and fruit-eating animals (frugivores) that disperse seeds. Here we show how seed dispersal by birds can influence the speed and diversity of early successional forests in Puerto Rico...
July 2016: Ecology
https://www.readbyqxmd.com/read/27859085/mid-latitude-shrub-steppe-plant-communities-climate-change-consequences-for-soil-water-resources
#11
Kyle A Palmquist, Daniel R Schlaepfer, John B Bradford, William K Lauenroth
In the coming century, climate change is projected to impact precipitation and temperature regimes worldwide, with especially large effects in drylands. We use big sagebrush ecosystems as a model dryland ecosystem to explore the impacts of altered climate on ecohydrology and the implications of those changes for big sagebrush plant communities using output from 10 Global Circulation Models (GCMs) for two representative concentration pathways (RCPs). We ask: (1) What is the magnitude of variability in future temperature and precipitation regimes among GCMs and RCPs for big sagebrush ecosystems, and (2) How will altered climate and uncertainty in climate forecasts influence key aspects of big sagebrush water balance? We explored these questions across 1980-2010, 2030-2060, and 2070-2100 to determine how changes in water balance might develop through the 21st century...
September 2016: Ecology
https://www.readbyqxmd.com/read/27848933/genome-editing-in-maize-directed-by-crispr-cas9-ribonucleoprotein-complexes
#12
Sergei Svitashev, Christine Schwartz, Brian Lenderts, Joshua K Young, A Mark Cigan
Targeted DNA double-strand breaks have been shown to significantly increase the frequency and precision of genome editing. In the past two decades, several double-strand break technologies have been developed. CRISPR-Cas9 has quickly become the technology of choice for genome editing due to its simplicity, efficiency and versatility. Currently, genome editing in plants primarily relies on delivering double-strand break reagents in the form of DNA vectors. Here we report biolistic delivery of pre-assembled Cas9-gRNA ribonucleoproteins into maize embryo cells and regeneration of plants with both mutated and edited alleles...
November 16, 2016: Nature Communications
https://www.readbyqxmd.com/read/27846886/antidiabetic-and-hypolipidemic-activities-of-hydroethanolic-root-extract-of-uvaria-chamae-in-streptozotocin-induced-diabetic-albino-rats
#13
Jonathan Emeka Emordi, Esther Oluwatoyin Agbaje, Ibrahim Adekunle Oreagba, Osede Ignis Iribhogbe
BACKGROUND: Diabetes mellitus is a metabolic disorder of multiple aetiology characterised by hyperglycemia resulting from defects in insulin secretion, insulin action or both. It is a global epidemic ravaging both developed and developing countries. The situation will worsen if nothing is done urgently. In fact, the need to identify natural products with antidiabetic potentials is of great importance as supported by several research efforts all over the world, in search of antidiabetic plant based products that are safe and efficacious...
November 15, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27846249/the-anthelmintic-ingredient-moxidectin-negatively-affects-seed-germination-of-three-temperate-grassland-species
#14
Carsten Eichberg, Manuel Wohde, Kerstin Müller, Anja Rausch, Christina Scherrmann, Theresa Scheuren, Rolf-Alexander Düring, Tobias W Donath
In animal farming, anthelmintics are regularly applied to control gastrointestinal nematodes. There is plenty of evidence that also non-target organisms, such as dung beetles, are negatively affected by residues of anthelmintics in faeces of domestic ungulates. By contrast, knowledge about possible effects on wild plants is scarce. To bridge this gap of knowledge, we tested for effects of the common anthelmintic formulation Cydectin and its active ingredient moxidectin on seed germination. We conducted a feeding experiment with sheep and germination experiments in a climate chamber...
2016: PloS One
https://www.readbyqxmd.com/read/27833629/development-of-marker-free-insect-resistant-indica-rice-by-agrobacterium-tumefaciens-mediated-co-transformation
#15
Fei Ling, Fei Zhou, Hao Chen, Yongjun Lin
Agrobacterium-mediated co-transformation is an efficient strategy to generate marker-free transgenic plants. In this study, the vectors pMF-2A(∗) containing a synthetic cry2A(∗) gene driven by maize ubiquitin promoter and pCAMBIA1301 harboring hygromycin phosphotransferase gene (hpt) were introduced into Minghui86 (Oryza sativa L. ssp. indica), an elite indica restorer line. Two independent transformants containing both the cry2A(∗) gene and hpt gene were regenerated. Several homozygous marker-free transgenic progenies were derived from family 2AH2, and three of them were selected for further insect bioassay in the laboratory and field...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27826796/bioengineering-of-the-plant-culture-of-capsicum-frutescens-with-vanillin-synthase-gene-for-the-production-of-vanillin
#16
Marcus Jenn Yang Chee, Grantley W Lycett, Teng-Jin Khoo, Chiew Foan Chin
Production of vanillin by bioengineering has gained popularity due to consumer demand toward vanillin produced by biological systems. Natural vanillin from vanilla beans is very expensive to produce compared to its synthetic counterpart. Current bioengineering works mainly involve microbial biotechnology. Therefore, alternative means to the current approaches are constantly being explored. This work describes the use of vanillin synthase (VpVAN), to bioconvert ferulic acid to vanillin in a plant system. The VpVAN enzyme had been shown to directly convert ferulic acid and its glucoside into vanillin and its glucoside, respectively...
November 8, 2016: Molecular Biotechnology
https://www.readbyqxmd.com/read/27821528/what-determines-direction-of-asymmetry-genes-environment-or-chance
#17
REVIEW
A Richard Palmer
Conspicuous asymmetries seen in many animals and plants offer diverse opportunities to test how the development of a similar morphological feature has evolved in wildly different types of organisms. One key question is: do common rules govern how direction of asymmetry is determined (symmetry is broken) during ontogeny to yield an asymmetrical individual? Examples from numerous organisms illustrate how diverse this process is. These examples also provide some surprising answers to related questions. Is direction of asymmetry in an individual determined by genes, environment or chance? Is direction of asymmetry determined locally (structure by structure) or globally (at the level of the whole body)? Does direction of asymmetry persist when an asymmetrical structure regenerates following autotomy? The answers vary greatly for asymmetries as diverse as gastropod coiling direction, flatfish eye side, crossbill finch bill crossing, asymmetrical claws in shrimp, lobsters and crabs, katydid sound-producing structures, earwig penises and various plant asymmetries...
December 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27818778/overexpression-of-blueberry-flowering-locus-t-is-associated-with-changes-in-the-expression-of-phytohormone-related-genes-in-blueberry-plants
#18
Xuan Gao, Aaron E Walworth, Charity Mackie, Guo-Qing Song
Flowering locus T (FT) is a primary integrator in the regulation of plant flowering. Overexpressing a blueberry (Vaccinium corymbosum L.) FT gene (VcFT) (herein VcFT-OX) resulted in early flowering and dwarfing in 'Aurora' plants (herein 'VcFT-Aurora'). In this study, we found that VcFT-OX reduced shoot regeneration from leaf explants. To investigate the potential roles of the phytohormone pathway genes associated with VcFT-OX, differentially expressed (DE) genes in leaf tissues of 'VcFT-Aurora' plants were annotated and analyzed using non-transgenic 'Aurora' plants as a control...
2016: Horticulture Research
https://www.readbyqxmd.com/read/27801844/screening-auxin-response-in-vitro-culture-aptitude-and-susceptibility-to-agrobacterium-mediated-transformation-of-italian-commercial-durum-wheat-varieties
#19
Wilma Sabetta, Cristina Crosatti, Alexandra Soltész, Valentina Di Rienzo, Cinzia Montemurro
The development of a robust Agrobacterium-mediated transformation protocol for a recalcitrant species like durum wheat requires the identification and optimization of factors affecting T-DNA delivery and plant regeneration. The purpose of this research was to compare the behavior of diverse durum wheat genotypes during in vitro culture and Agrobacterium tumefaciens-mediated transformation, using immature embryos as explants. Apart from plant genotype, two of the main influencing factors for a successful genetic transformation have been examined here, i...
October 28, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27800169/de-novo-assembly-of-plant-body-plan-a-step-ahead-of-deadpool
#20
REVIEW
Abdul Kareem, Dhanya Radhakrishnan, Yash Sondhi, Mohammed Aiyaz, Merin V Roy, Kaoru Sugimoto, Kalika Prasad
While in the movie Deadpool it is possible for a human to recreate an arm from scratch, in reality plants can even surpass that. Not only can they regenerate lost parts, but also the whole plant body can be reborn from a few existing cells. Despite the decades old realization that plant cells possess the ability to regenerate a complete shoot and root system, it is only now that the underlying mechanisms are being unraveled. De novo plant regeneration involves the initiation of regenerative mass, acquisition of the pluripotent state, reconstitution of stem cells and assembly of regulatory interactions...
August 2016: Regeneration
keyword
keyword
49968
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"