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Seed Priming

Bing-Ying Xie, Ai-Wen Wu
BACKGROUND: Colorectal cancer (CRC) is a heterogeneous disease; current research relies on cancer cell lines and animal cancer models, which may not precisely imitate inner human tumors and guide clinical medicine. The purpose of our study was to explore and further improve the process of producing three-dimensional (3D) organoid model and impel the development of personalized therapy. METHODS: We subcutaneously injected surgically resected CRC tissues from a patient into BALB/c-nu mice to build patient-derived xenografts (PDXs)...
2016: Chinese Medical Journal
Anca Macovei, Andrea Pagano, Paola Leonetti, Daniela Carbonera, Alma Balestrazzi, Susana S Araújo
The pre-germinative metabolism is among the most fascinating aspects of seed biology. The early seed germination phase, or pre-germination, is characterized by rapid water uptake (imbibition), which directs a series of dynamic biochemical events. Among those are enzyme activation, DNA damage and repair, and use of reserve storage compounds, such as lipids, carbohydrates and proteins. Industrial seedling production and intensive agricultural production systems require seed stocks with high rate of synchronized germination and low dormancy...
October 11, 2016: Plant Cell Reports
Wuttipong Mahakham, Piyada Theerakulpisut, Santi Maensiri, Santi Phumying, Ajit K Sarmah
Application of nanotechnology in agriculture is moving towards to improve the cultivation and growth of crop plants. The present study is the first attempt to propose a simple, yet cost-effective and ecofriendly synthesis of phytochemicals-capped GNPs using rhizome extract of galanga plant at room temperature. The synthesized GNPs were characterized by various characterization techniques. To promote the green nanotechnology applications in agriculture, GNPs solution at environmentally realistic dose (5 to 15ppm) as nanopriming agent was used to activate the germination and early seedling growth of maize aged seeds...
September 15, 2016: Science of the Total Environment
Yangyong Lv, Shuaibing Zhang, Jinshui Wang, Yuansen Hu
Wheat (Triticum aestivum L.) is an important crop worldwide. The physiological deterioration of seeds during storage and seed priming is closely associated with germination, and thus contributes to plant growth and subsequent grain yields. In this study, wheat seeds during different stages of artificial ageing (45°C; 50% relative humidity; 98%, 50%, 20%, and 1% Germination rates) and priming (hydro-priming treatment) were subjected to proteomics analysis through a proteomic approach based on the isobaric tandem mass tag labeling...
2016: PloS One
Ismahen Hassini, Nieves Baenas, Diego A Moreno, Micaela Carvajal, Neziha Boughanmi, Maria Del Carmen Martinez Ballesta
BACKGROUND: Brassica spp. sprouts are rich in nutrients and bioactive compounds, especially glucosinolates and phenolic acid derivatives, and the composition of these young germinating seeds can be altered by several external factors. In this study two cabbage varieties (Brassica oleracea var. capitata, red and white) were studied using seed priming (KCl 50 mmol L(-1) ; NaCl 150 mmol L(-1) ) and MeJA spraying (25 µmol L(-1) ) to elicit the phytochemical content of edible sprouts...
September 14, 2016: Journal of the Science of Food and Agriculture
Khalid Bashir Dar, Aashiq Hussain Bhat, Shajrul Amin, Akbar Masood, Mohammad Afzal Zargar, Showkat Ahmad Ganie
Derailed inflammation causes severe damage to the normal tissues resulting in various pathological conditions such as auto-inflammatory disorders, neurodegenerative diseases and cancer. Cure of inflammatory diseases is a big challenge. Medicinal herbs used traditionally represent the best option for obtaining effective anti-inflammatory therapeutics. Present review provides a thorough insight about various pathways, consequences and therapeutic strategies of inflammation with prime focus to expose indigenous anti-inflammatory herbal compounds along with their structures and diverse range of mechanisms of action...
August 17, 2016: Current Medicinal Chemistry
Saddam Hussain, Hanqi Yin, Shaobing Peng, Faheem A Khan, Fahad Khan, Muhammad Sameeullah, Hafiz A Hussain, Jianliang Huang, Kehui Cui, Lixiao Nie
Submergence stress is a limiting factor for direct-seeded rice systems in rainfed lowlands and flood-prone areas of South and Southeast Asia. The present study demonstrated that submergence stress severely hampered the germination and seedling growth of rice, however, seed priming alleviated the detrimental effects of submergence stress. To elucidate the molecular basis of seed priming-induced submergence tolerance, transcriptome analyses were performed using 4-day-old primed (selenium-Se and salicylic acid-SA priming) and non-primed rice seedlings under submergence stress...
2016: Frontiers in Plant Science
Weiqiu Lan, Wei Wang, Zhimin Yu, Yanxia Qin, Jing Luan, Xianzhen Li
OBJECTIVES: To study enhanced barley germination by chitooligosaccharide as an elicitor for improving the quality of malt. RESULTS: Barley germination for both radical and leaf sprouts was enhanced when chitooligosaccharide was added to the steeping water in the first steeping cycle. The activities of hydrolases (α-/β-amylase, proteinase and β-glucanase) and antioxidases (superoxide dismutase and catalase) in the resultant malt were increased in a dose-dependent manner when chitooligosaccharide was supplemented in the steeping water...
November 2016: Biotechnology Letters
Nilimesh Mridha, Sudipta Chattaraj, Debashis Chakraborty, Anjali Anand, Pramila Aggarwal, Shantha Nagarajan
Soil moisture stress during pod filling is a major constraint in production of chickpea (Cicer arietinum L.), a fundamentally dry land crop. We investigated effect of pre-sowing seed priming with static magnetic field (SMF) on alleviation of stress through improvement in radiation and water use efficiencies. Experiments were conducted under greenhouse and open field conditions with desi and kabuli genotypes. Seeds exposed to SMF (strength: 100 mT, exposure: 1 h) led to increase in root volume and surface area by 70% and 65%, respectively...
September 2016: Bioelectromagnetics
Mohamed Salah Sheteiwy, Yuying Fu, Qijuan Hu, Aamir Nawaz, Yajing Guan, Zhan Li, Yutao Huang, Jin Hu
The present study was carried out to investigate the beneficial impact of seed priming with polyethylene glycol (PEG) under different concentrations of zinc oxide nanoparticles (nano-ZnO), i.e., 0, 250, 500, and 750 mg L(-1) in two cultivars of Oryza sativa (Zhu Liang You 06 and Qian You No. 1). Physiological parameters were improved by priming with 30 % PEG in both cultivars under stress treatments. Seed priming with 30 % PEG improved α-amylase activities and total soluble sugar contents of both cultivars under nano-ZnO stress...
October 2016: Environmental Science and Pollution Research International
Philippe Gallusci, Charlie Hodgman, Emeline Teyssier, Graham B Seymour
Fruit ripening is a developmental process that results in the leaf-like carpel organ of the flower becoming a mature ovary primed for dispersal of the seeds. Ripening in fleshy fruits involves a profound metabolic phase change that is under strict hormonal and genetic control. This work reviews recent developments in our understanding of the epigenetic regulation of fruit ripening. We start by describing the current state of the art about processes involved in histone post-translational modifications and the remodeling of chromatin structure and their impact on fruit development and ripening...
2016: Frontiers in Plant Science
Hussien M Daffalla, Mohammed Mahgoub Hassan, Magdoleen G Osman, Amani Hamad Eltayeb, Yassin Ibrahim Dagash, Migdam E Abdel Gani
Striga hermonthica is an obligate, root parasite, that limits cereal production in sub-Saharan Africa. Successful control depends on eliminating its seed reserves in soil, thereby preventing parasitism. Two experiments were conducted to evaluate the effects of salinity on germination traits and seedling growth of sorghum (cultivar Wad Ahmed) and S. hermonthica. The experiments were conducted in a factorial arrangement on the basis of completely randomized design (CRD) with 4 replications. In the first experiment, sorghum height, leaf area, and shoot and root dry weights were examined...
2014: International Scholarly Research Notices
Susana de Sousa Araújo, Stefania Paparella, Daniele Dondi, Antonio Bentivoglio, Daniela Carbonera, Alma Balestrazzi
In the context of seed technology, the use of physical methods for increasing plant production offers advantages over conventional treatments based on chemical substances. The effects of physical invigoration treatments in seeds can be now addressed at multiple levels, ranging from morpho-structural aspects to changes in gene expression and protein or metabolite accumulation. Among the physical methods available, "magneto-priming" and irradiation with microwaves (MWs) or ionizing radiations (IRs) are the most promising pre-sowing seed treatments...
2016: Frontiers in Plant Science
Ahmad Mahmood, Oğuz Can Turgay, Muhammad Farooq, Rifat Hayat
Beneficial microbes are applied to the soil and plant tissues directly or through seed inoculation, whereas soil application is preferred when there is risk of inhibitors or antagonistic microbes on the plant tissues. Insufficient survival of the microorganisms, hindrance in application of fungicides to the seeds and exposure to heat and sunlight in subsequent seed storage in conventional inoculation methods force to explore appropriate and efficient bacterial application method. Seed priming, where seeds are hydrated to activate metabolism without actual germination followed by drying, increases the germination, stand establishment and stress tolerance in different crops...
August 2016: FEMS Microbiology Ecology
Łukasz Wojtyla, Katarzyna Lechowska, Szymon Kubala, Małgorzata Garnczarska
Environmental stress factors such as drought, salinity, temperature extremes and rising CO2 negatively affect crop growth and productivity. Faced with the scarcity of water resources, drought is the most critical threat to world food security. This is particularly important in the context of climate change and an increasing world population. Seed priming is a very promising strategy in modern crop production management. Although it has been known for several years that seed priming can enhance seed quality and the effectiveness of stress responses of germinating seeds and seedlings, the molecular mechanisms involved in the acquisition of stress tolerance by primed seeds in the germination process and subsequent plant growth remain poorly understood...
May 4, 2016: Journal of Plant Physiology
Steven R Caliari, Maryna Perepelyuk, Elizabeth M Soulas, Gi Yun Lee, Rebecca G Wells, Jason A Burdick
The extracellular matrix (ECM) presents an evolving set of mechanical cues to resident cells. We developed methacrylated hyaluronic acid (MeHA) hydrogels containing both stable and hydrolytically degradable crosslinks to provide cells with a gradually softening (but not fully degradable) milieu, mimicking physiological events such as fibrosis regression. To demonstrate the utility of this cell culture system, we studied the phenotype of rat hepatic stellate cells, the major liver precursors of fibrogenic myofibroblasts, within this softening environment...
June 13, 2016: Integrative Biology: Quantitative Biosciences From Nano to Macro
Manuela O DE Souza, Claudinéia R Pelacani, Leo A J Willems, Renato D DE Castro, Henk W M Hilhorst, Wilco Ligterink
This study aimed to evaluate the effects of priming on seed germination under salt stress and gene expression in seeds and seedlings of P. angulata L. After priming for 10 days, seed germination was tested in plastic trays containing 15 ml of water (0 dS m-1 - control) or 15 ml of NaCl solution (2, 4, 6, 8, 10, 12, 14 and 16 dS m-1). Fresh and dry weight of shoots and roots of seedlings were evaluated at 0, 2, 4, 6, 8 dS m-1. Total RNA was extracted from whole seeds and seedlings followed by RT-qPCR. The target genes selected for this study were: ascorbate peroxidase (APX), glutathione-S-transferase (GST), thioredoxin (TXN), high affinity potassium transporter protein 1 (HAK1) and salt overly sensitive 1 (SOS1)...
2016: Anais da Academia Brasileira de Ciências
Samatha Gunapati, Ram Naresh, Sanjay Ranjan, Deepti Nigam, Aradhana Hans, Praveen C Verma, Rekha Gadre, Uday V Pathre, Aniruddha P Sane, Vidhu A Sane
NAC proteins are plant-specific transcription factors that play essential roles in regulating development and responses to abiotic and biotic stresses. We show that over-expression of the cotton GhNAC2 under the CaMV35S promoter increases root growth in both Arabidopsis and cotton under unstressed conditions. Transgenic Arabidopsis plants also show improved root growth in presence of mannitol and NaCl while transgenic cotton expressing GhNAC2 show reduced leaf abscission and wilting upon water stress compared to control plants...
2016: Scientific Reports
Saddam Hussain, Fahad Khan, Weidong Cao, Lishu Wu, Mingjian Geng
The production and detoxification of reactive oxygen intermediates (ROIs) play an important role in the plant response to nutrient and environmental stresses. The present study demonstrated the behavior of growth, ROIs-production and their detoxification in primed and non-primed rice seedlings under chilling stress (18°C) and nitrogen-(N), phosphorus-(P), or potassium-(K) deprivation. The results revealed that chilling stress as well as deprivation of any mineral nutrient severely hampered the seedling growth of rice, however, seed priming treatments (particularly selenium- or salicylic acid-priming), were effective in enhancing the rice growth under stress conditions...
2016: Frontiers in Plant Science
Amirreza Tahaei, Ali Soleymani, Majid Shams
Reduced seed germination is among the most important factors adversely affecting crop stand and subsequent plant growth. Fennel (Foeniculum vulgare Mill) is an important medicinal plant with poor seed germination rate, occasionally. It is accordingly pertinent to find methods which can enhance fennel seed germination and remove the barriers of dormancy breaking. The present experiments studied the effects of two different priming (cold moist stratification and osmopriming) and 14 dormancy breaking techniques (hormonal, osmopriming, biopriming, chemical priming, and hydropriming) on the seed germination and seedling growth of two different fennel genotypes under growth chamber conditions...
September 2016: Applied Biochemistry and Biotechnology
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