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Seed Priming

Katarzyna Szafrańska, Russel J Reiter, Małgorzata M Posmyk
Melatonin, due to its pleiotropic effects plays an important role improving tolerance to stresses. Plants increase endogenous melatonin synthesis when faced with harsh environments as well as exogenously applied melatonin limits stress injuries. Presented work demonstrated that single melatonin application into the seeds during pre-sowing priming improved oxidative stress tolerance of growing seedlings exposed to paraquat (PQ). PQ is a powerful herbicide which blocks the process of photosynthesis under light conditions due to free radicals excess production, when O2 is rapidly converted to [Formula: see text] and subsequently to other reactive oxygen species...
2016: Frontiers in Plant Science
Chih-Jie Shen, Shih-Hung Chan, Chung-Ta Lee, Wan-Chen Huang, Jhih-Peng Tsai, Ben-Kuen Chen
Obese patients have higher levels of free fatty acids (FFAs) in their plasma and a higher risk of cancer than their non-obese counterparts. However, the mechanisms involved in the regulation of cancer metastasis by FFAs remain unclear. In this study, we found that oleic acid (OA) induced angiopoietin-like 4 (ANGPTL4) protein expression and secretion and conferred anoikis resistance to head and neck squamous cell carcinomas (HNSCCs). The autocrine production of OA-induced ANGPTL4 further promoted HNSCC migration and invasion...
November 16, 2016: Cancer Letters
Wei-An Chang, Jen-Yu Hung, Shu-Fang Jian, Yi-Shiuan Lin, Cheng-Ying Wu, Ya-Ling Hsu, Po-Lin Kuo
Natural polyphenolic compounds of grapes and their seeds are thought to be therapeutic adjuvants in a variety of diseases, including cancer prevention. This study was carried out to investigate the effect of grape phenolic compounds on the regulation of cancer-mediated immune suppression. Laricitrin exhibits the greatest potential to ameliorate the suppressive effects of lung cancer on dendritic cells' (DCs') differentiation, maturation and function. Human lung cancer A549 and CL1-5 cells change the phenotype of DCs that express to high levels of IL-10 and prime T cells towards an immune suppression type-2 response (Th2)...
November 9, 2016: Oncotarget
Weiqin Wang, Shaobing Peng, Qian Chen, Junhao Mei, Huanglin Dong, Lixiao Nie
Mechanization and simplification are inevitable trends in agriculture production to decrease input demands and simultaneously improve resource use efficiency. Dry direct-seeded rice is a resource-saving cropping system and has been considered as a replacement for traditional transplanted rice. However, the poor establishment of dry direct-seeded early rice, primarily induced by chilling stress, has limited the wide adoption of this system. To examine the effects of pre-sowing seed treatments on rice germination, seedling growth and associated metabolic events under chilling stress, two seed coating treatments (Hanyubaomu coating and Miaoboshi coating) and two seed priming treatments (selenium priming and salicylic acid priming) were tested in field and growth chamber experiments...
November 7, 2016: AoB Plants
Zhina Zang, Wenhua Guan, Diansen Chen, Yan Han, Zhan Shi, Jinjin Zhou
BACKGROUND MicroRNA-125a (miR-125a) has been involved with many diseases, such as hepatocellular carcinoma and inflammation. In this study, we aimed to investigate the molecular mechanism, including the potential regulator and signaling pathways, of vascular endothelial growth factor (VEGF). MATERIAL AND METHODS We divided the participants into 3 groups by rs12976445 genotype and performed chi-square tests to evaluate the differences between CC and CT+TT groups for sex, age, grading, pT category, metastases, and fludeoxyglucose F18 injection (18FDG) metabolism...
November 4, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Ali Ahsan Bajwa, Sehrish Sadia, Hafiz Haider Ali, Khawar Jabran, Arslan Masood Peerzada, Bhagirath Singh Chauhan
Weed management is one of the prime concerns for sustainable crop production. Conyza bonariensis and Conyza canadensis are two of the most problematic, noxious, invasive and widespread weeds in modern-day agriculture. The biology, ecology and interference of C. bonariensis and C. canadensis have been reviewed here to highlight pragmatic management options. Both these species share a unique set of biological features, which enables them to invade and adapt a wide range of environmental conditions. Distinct reproductive biology and an efficient seed dispersal mechanism help these species to spread rapidly...
October 31, 2016: Environmental Science and Pollution Research International
Y-H Liao, K-H Chiang, J-M Shieh, C-R Huang, C-J Shen, W-C Huang, B-K Chen
Epidermal growth factor (EGF) is important for cancer cell proliferation, angiogenesis and metastasis in many types of cancer. However, the mechanisms involved in EGF-induced head and neck squamous cell carcinoma (HNSCC) metastasis remain largely unknown. In this study, we reveal that angiopoietin-like 4 (ANGPTL4) plays an important role in the regulation of EGF-induced cancer metastasis. We showed that EGF-induced ANGPTL4 expression promoted anoikis resistance and cancer cell migration and invasion in HNSCC...
October 31, 2016: Oncogene
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...
December 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
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