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Iron plant

Zhen-Zhen Cao, Mei-Ling Qin, Xiao-Yan Lin, Zhi-Wei Zhu, Ming-Xue Chen
Sulfur (S) fertilizer application in rice (Oryza sativa L.) is crucial in determining rice grain productivity and quality. However, little information is available concerning the effect of S supply on cadmium (Cd) uptake and translocation in rice. In this study, both hydroponic and soil experiments were conducted to investigate the influence of S supply on Cd accumulation in rice under two Cd levels (0 and 50 μM), combined with three S concentrations (0, 2.64 and 5.28 mM). The moderate and excessive S supply (2...
March 13, 2018: Environmental Pollution
Guillaume Dubeaux, Julie Neveu, Enric Zelazny, Grégory Vert
Plant roots forage the soil for iron, the concentration of which can be dramatically lower than those needed for growth. Soil iron uptake uses the broad metal spectrum IRT1 transporter that also transports zinc, manganese, cobalt, and cadmium. Sophisticated iron-dependent transcriptional regulatory mechanisms allow plants to tightly control the abundance of IRT1, ensuring optimal absorption of iron. Here, we uncover that IRT1 acts as a transporter and receptor (transceptor), directly sensing excess of its non-iron metal substrates in the cytoplasm, to regulate its own degradation...
March 15, 2018: Molecular Cell
Guirong Tang, Qiong Li, Shenghui Xing, Ningning Li, Zheng Tang, Liangliang Yu, Junhui Yan, Xuan Li, Li Luo
Agrobacterium tumefaciens infects and causes crown galls in dicot plants by transferring T-DNA from the Ti plasmid to the host plant via a type IV secretion system (T4SS). This process requires appropriate environmental conditions, certain plant secretions and bacterial regulators. In our previous work, a member of the LysR family of transcriptional regulators (LsrB) in Sinorhizobium meliloti was found to modulate its symbiotic interactions with the host plant alfalfa. However, the function of its homologue in A...
March 16, 2018: Molecular Plant-microbe Interactions: MPMI
Fırat Kurt, Ertugrul Filiz
Iron (Fe) is an essential element for plant life. Its deficiency impedes growth and development and excessive iron can cause the toxic effect via the Fenton reaction. Thus, plants have developed various mechanisms to acquire, distribute and utilize Fe for the maintenance of their iron homeostasis at cellular and systemic levels. A basic helix-loop-helix (bHLH) transcription factor family plays essential roles in many regulatory and development processes in plants. In this study, we aimed to understand the roles of bHLH38, bHLH39, bHLH100 and bHLH101 genes for Fe homeostasis in Arabidopsis, tomato, rice, soybean and maize species by using bioinformatics approaches...
March 15, 2018: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
Amir Bostani
The solubility of iron (Fe), as an important micronutrient for plant growth, is not high in the calcareous soils, and hence efficient methods must be used to increase its availability for plant use. Accordingly, a two-year research work was conducted to investigate the effects of composted municipal solid wastes (MSW) on Fe accumulation and fractionation in a calcareous soil. Treatments including MSW levels at (0 (control), 15 (MSW1), 30 (MSW2) and 60 (MSW3) t ha-1 dry weight) and usage time (yearly (T1) or biyearly usage (T2)) were tested in a factorial experiment on the basis of a completely randomized block design with three replications...
May 2018: Journal of Trace Elements in Medicine and Biology
Ralph J M Temmink, Sarah F Harpenslager, Alfons J P Smolders, Gijs van Dijk, Roy C J H Peters, Leon P M Lamers, Monique M L van Kempen
Azolla spp., a water fern often used for phytoremediation, is a strong phosphorus (P) accumulator due to its high growth rate and N2 fixing symbionts (diazotrophs). It is known that plant growth is stimulated by P, but the nature of the interactive response of both symbionts along a P gradient, and related changes in growth-limiting factors, are unclear. We determined growth, and N and P sequestration rates of Azolla filiculoides in N-free water at different P concentrations. The growth response appeared to be biphasic and highest at levels ≥10 P µmol l-1 ...
March 13, 2018: Scientific Reports
Chou-Yueh Chang, Horng-Rong Chang, Hsing-Chun Lin, Han-Hsin Chang
Objective Vegetarian diets have been shown to increase the risk of certain nutritional deficiencies, such as iron. As a number of patients with chronic kidney disease (CKD) in Taiwan are lacto-ovo vegetarians, the aim of this study was to investigate the effects of different proportions and sources of protein in lacto-ovo vegetarian and omnivorous diets, as well as the influence of adequate dietary protein intake, on renal function and nutritional status of Taiwanese patients with stage 3 to stage 5 CKD. Methods This is a cross-sectional study...
March 13, 2018: Journal of the American College of Nutrition
Tatsuya Nobori, André C Velásquez, Jingni Wu, Brian H Kvitko, James M Kremer, Yiming Wang, Sheng Yang He, Kenichi Tsuda
Plant pathogens can cause serious diseases that impact global agriculture. The plant innate immunity, when fully activated, can halt pathogen growth in plants. Despite extensive studies into the molecular and genetic bases of plant immunity against pathogens, the influence of plant immunity in global pathogen metabolism to restrict pathogen growth is poorly understood. Here, we developed RNA sequencing pipelines for analyzing bacterial transcriptomes in planta and determined high-resolution transcriptome patterns of the foliar bacterial pathogen Pseudomonas syringae in Arabidopsis thaliana with a total of 27 combinations of plant immunity mutants and bacterial strains...
March 12, 2018: Proceedings of the National Academy of Sciences of the United States of America
Bret Cooper, Nazrul Islam, Yunfeng Xu, Hunter S Beard, Wesley M Garrett, Ganyu Gu, Xiangwu Nou
Staphylococcus aureus, a bacterial, food-borne pathogen of humans, can contaminate raw fruits and vegetables. While physical and chemical methods are available to control S. aureus, scientists are searching for inhibitory phytochemicals from plants. One promising compound from pomegranate is punicalagin, a natural antibiotic. To get a broader understanding of the inhibitory effect of punicalagin on S. aureus growth, we used high-throughput mass spectrometry and quantitative isobaric labeling to investigate the proteome of S...
March 12, 2018: Proteomics
Pedro García, Concepción Romero, Manuel Brenes
BACKGROUND: The oxidation and polymerization of the phenolic compounds present in black ripe olives give rise to their black shiny colour which is fixed by the addition of ferrous salts such as ferrous gluconate. Among the many variables that can affect the successful of this fixation step, the influence of the pH on this process was assessed on fruits of the Hojiblanca cultivar processed at pilot plant scale. Hence, the aim of this work was to gain knowledge on the development of this fixation step, in particular on olives that were oxidized with a single alkaline treatment...
March 12, 2018: Journal of the Science of Food and Agriculture
Paulo A A Ferreira, Carina Marchezan, Carlos A Ceretta, Camila P Tarouco, Cledimar R Lourenzi, Leandro S Silva, Hilda H Soriani, Fernando T Nicoloso, Stefano Cesco, Tanja Mimmo, Gustavo Brunetto
Soil contamination with copper (Cu)-based agrochemicals used in vineyards for pest control is a growing problem. In this context, the application of soil amendment to limit Cu toxicity, especially for young plants after the replanting of vineyards, has been a concern for winemakers. Therefore, the aim of this study was to evaluate how different amendments can contribute to the decrease in Cu availability in areas vocated to viticulture. Furthermore, the aim was to evaluate to the effect of Cu on the biochemical and physiological changes in the development of the young vine plants, both at the shoot and the root level...
March 2, 2018: Plant Physiology and Biochemistry: PPB
Sung Don Lim, Won Cheol Yim, Degao Liu, Rongbin Hu, Xiaohan Yang, John C Cushman
Strategies for improving plant size are critical targets for plant biotechnology to increase vegetative biomass or reproductive yield. To improve biomass production, a codon-optimized helix-loop-helix transcription factor (VvCEB1opt ) from wine grape was overexpressed in Arabidopsis thaliana resulting in significantly increased leaf number, leaf and rosette area, fresh weight, and dry weight. Cell size, but typically not cell number, was increased in all tissues resulting in increased vegetative biomass and reproductive organ size, number, and seed yield...
March 9, 2018: Plant Biotechnology Journal
Junjie Zhang, Shuqi Li, Mengfei Lin, Endian Yang, Xiaoyang Chen
The drumstick tree has traditionally been used as foodstuff and fodder in several countries. Due to its high nutritional value and good biomass production, interest in this plant has increased in recent years. It has therefore become important to rapidly and accurately evaluate drumstick quality. In this study, we addressed the optimization of Near-infrared spectroscopy (NIRS) to analyze crude protein, crude fat, crude fiber, iron (Fe), and potassium (K) in a variety of drumstick accessions (N = 111) representing different populations, cultivation programs, and climates...
March 8, 2018: Bioscience, Biotechnology, and Biochemistry
David Chan-Rodriguez, Elsbeth L Walker
The micronutrient iron (Fe) is essential for photosynthesis, respiration, and many other processes, but it is only sparingly soluble in aqueous solution, making adequate acquisition by plants a serious challenge. Fe is a limiting factor for plant growth on approximately 30% of the world's arable lands. Moreover, Fe deficiency in humans is a global health issue, affecting 1.62 billion people, or about 25% of the world's population. It is imperative that we gain a better understanding of the mechanisms that plants use to regulate iron homeostasis, since these will be important targets for future biofortification and crop improvement strategies...
2018: Frontiers in Plant Science
Derrick D Brown
Vegetarianism provides a catchall term for a variety of diets that exclude the consumption of some or all animal products. Contrary to popular claims, appropriately designed and managed vegetarian diets contain foods nutritionally sufficient for health, well-being, and physical performance. Vegetarian dancers can meet their protein needs from primarily or exclusively (vegan) plant-based sources when a variety of these foods are consumed daily and energy intake is adequate. However, the quality and timing of dietary intake is of key importance to meet the physical demands typical of high intensity, intermittent types of dance styles...
March 15, 2018: Journal of Dance Medicine & Science
Yoshiki Mino
 The X-ray crystallographic analysis of the single-crystal mugineic acid-Cu(II) complex showed that mugineic acid acts as a hexadentate ligand. Mugineic acid, a typical phytosiderophore, shows a marked stimulating effect on59 Fe-uptake and chlorophyll synthesis in rice plants. A salient feature is the higher reduction potential of the mugineic acid-Fe(III) complex than those of bacterial siderophores. X-ray diffraction study of the structurally analogous Co(III) complex of the mugineic acid-Fe(III) complex demonstrates that the azetidine nitrogen and secondary amine nitrogen, and both terminal carboxylate oxygens, coordinate as basal planar donors, and the hydroxyl oxygen and intermediate carboxylate oxygen bind as axial donors in a nearly octahedral configuration...
2018: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
J A Pempek, E Holder, K L Proudfoot, M Masterson, G Habing
The inherent disease susceptibility of veal calves results in frequent antimicrobial use. Improvements in antimicrobial stewardship necessitate alternative therapies to improve calf health and growth, while reducing the need for antimicrobials important to human health. This study investigated the effect of 2 alternative therapies, lactoferrin (an iron-binding protein found in colostrum) and cinnamaldehyde (an essential oil of the cinnamon plant) on growth, disease incidence, and mortality risk in special-fed veal calves...
February 28, 2018: Journal of Dairy Science
Jean-Baptiste Guyon, Valérie Vergé, Philippe Schatt, Jean-Claude Lozano, Marion Liennard, François-Yves Bouget
Microalgae are promising sources for the sustainable production of compounds of interest for biotechnologies. Compared to higher plants, microalgae have a faster growth rate and can be grown in industrial photobioreactors. The microalgae biomass contains specific metabolites of high added value for biotechnology such as lipids, polysaccharides or carotenoid pigments. Studying carotenogenesis is important for deciphering the mechanisms of adaptation to stress tolerance as well as for biotechnological production...
February 28, 2018: Marine Drugs
Fatma Gizem Avci, Nihat Alpagu Sayar, Berna Sariyar Akbulut
Plant-derived substances have regained interest in the fight against antibiotic resistance owing to their distinct antimicrobial mechanisms and multi-target properties. With the recent advances in instrumentation and analysis techniques, OMIC approaches are extensively used for target identification and elucidation of the mechanism of phytochemicals in drug discovery. In the current study, RNA sequencing based transcriptional profiling together with global differential protein expression analysis was used to comparatively elaborate the activities and the effects of the plant alkaloids boldine, bulbocapnine, and roemerine along with the well-known antimicrobial alkaloid berberine in Bacillus subtilis cells...
February 26, 2018: Phytochemistry
Fabiane Igansi de Castro Dos Santos, Naciele Marini, Railson Schreinert Dos Santos, Bianca Silva Fernandes Hoffman, Marcio Alves-Ferreira, Antonio Costa de Oliveira
Reverse Transcription quantitative PCR (RT-qPCR) is a technique for gene expression profiling with high sensibility and reproducibility. However, to obtain accurate results, it depends on data normalization by using endogenous reference genes whose expression is constitutive or invariable. Although the technique is widely used in plant stress analyzes, the stability of reference genes for iron toxicity in rice (Oryza sativa L.) has not been thoroughly investigated. Here, we tested a set of candidate reference genes for use in rice under this stressful condition...
2018: PloS One
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