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https://www.readbyqxmd.com/read/28103409/zea-mays-fe-deficiency-related-4-zmfdr4-functions-as-an-iron-transporter-in-the-plastids-of-monocots
#1
Xiu-Yue Zhang, Xi Zhang, Qi Zhang, Xiao-Xi Pan, Luo-Chen Yan, Xiao-Juan Ma, Wei-Zhong Zhao, Xiao-Ting Qi, Li-Ping Yin
Iron (Fe)-homeostasis in the plastids is closely associated with Fe transport proteins that prevent Fe from occurring in its toxic free ionic forms. However, the number of known protein families related to Fe transport in the plastids (about 5) and the function of iron in non-green plastids is limited. In the present study, we report the functional characterization of Zea mays Fe deficiency-related 4 (ZmFDR4), which was isolated from a differentially expressed clone of a cDNA library of Fe deficiency-induced maize roots...
January 19, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28103037/effects-of-different-forms-of-selenium-fertilizers-on-se-accumulation-distribution-and-residual-effect-in-winter-wheat-summer-maize-rotation-system
#2
Qi Wang, Yao Yu, Jixiang Li, Yanan Wan, Qingqing Huang, Yanbin Guo, Huafen Li
Foliar Se fertilizers were applied to investigate the effects of Se forms on Se accumulation and distribution in the wheat-maize rotation system and residual concentration of Se in subsequent crops. Sodium selenite, sodium selenate, selenomethionine, chemical nano-Se, humic acid + sodium selenite and compound fertilizer + sodium selenite were applied once at the flowering stage of wheat (30 g ha-1) and at the bell stage of maize (60 g ha-1). Compared with the control treatment, foliar Se applications significant increased the grain Se concentration of wheat and maize by 0...
January 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28102202/consistent-negative-response-of-us-crops-to-high-temperatures-in-observations-and-crop-models
#3
Bernhard Schauberger, Sotirios Archontoulis, Almut Arneth, Juraj Balkovic, Philippe Ciais, Delphine Deryng, Joshua Elliott, Christian Folberth, Nikolay Khabarov, Christoph Müller, Thomas A M Pugh, Susanne Rolinski, Sibyll Schaphoff, Erwin Schmid, Xuhui Wang, Wolfram Schlenker, Katja Frieler
High temperatures are detrimental to crop yields and could lead to global warming-driven reductions in agricultural productivity. To assess future threats, the majority of studies used process-based crop models, but their ability to represent effects of high temperature has been questioned. Here we show that an ensemble of nine crop models reproduces the observed average temperature responses of US maize, soybean and wheat yields. Each day >30 °C diminishes maize and soybean yields by up to 6% under rainfed conditions...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28102016/mechanical-and-barrier-properties-of-maize-starch-gelatin-composite-film-effects-of-amylose-content
#4
Kun Wang, Wenhang Wang, Ran Ye, Jingdong Xiao, Yaowei Liu, Junsheng Ding, Shaojing Zhang, Anjun Liu
BACKGROUND: In order to obtain new reinforcing bio-fillers to improve the physicochemical properties of gelatin based film, three types of maize starches: waxy maize starch (Ap), normal starch (Ns), and high amylose starch (Al), were incorporated into the gelatin films, and their properties were investigated, focusing on the impact of amylose content. RESULTS: The thickness, opacity and roughness of gelatin films increased depending upon amylose content along with the concentration of starch...
January 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28100816/diets-derived-from-maize-monoculture-cause-maternal-infanticides-in-the-endangered-european-hamster-due-to-a-vitamin-b3-deficiency
#5
Mathilde L Tissier, Yves Handrich, Odeline Dallongeville, Jean-Patrice Robin, Caroline Habold
From 1735 to 1940, maize-based diets led to the death of hundreds of thousands of people from pellagra, a complex disease caused by tryptophan and vitamin B3 deficiencies. The current cereal monoculture trend restricts farmland animals to similarly monotonous diets. However, few studies have distinguished the effects of crop nutritional properties on the reproduction of these species from those of other detrimental factors such as pesticide toxicity or agricultural ploughing. This study shows that maize-based diets cause high rates of maternal infanticides in the European hamster, a farmland species on the verge of extinction in Western Europe...
January 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28100172/integrated-genomics-based-mapping-reveals-the-genetics-underlying-maize-flavonoid-biosynthesis
#6
Min Jin, Xuehai Zhang, Mingchao Zhao, Min Deng, Yuanhao Du, Yang Zhou, Shouchuang Wang, Takayuki Tohge, Alisdair R Fernie, Lothar Willmitzer, Yariv Brotman, Jianbing Yan, Weiwei Wen
BACKGROUND: Flavonoids constitute a diverse class of secondary metabolites which exhibit potent bioactivities for human health and have been indicated to play an important role in plant development and defense. However, accumulation and variation of flavonoid content in diverse maize lines and the genes responsible for their biosynthesis in this important crop remain largely unknown. In this study, we combine genetic mapping, metabolite profiling and gene regulatory network analysis to further enhance understanding of the maize flavonoid pathway...
January 18, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28099470/a-gene-oriented-haplotype-comparison-reveals-recently-selected-genomic-regions-in-temperate-and-tropical-maize-germplasm
#7
Cheng He, Junjie Fu, Jie Zhang, Yongxiang Li, Jun Zheng, Hongwei Zhang, Xiaohong Yang, Jianhua Wang, Guoying Wang
The extensive genetic variation present in maize (Zea mays) germplasm makes it possible to detect signatures of positive artificial selection that occurred during temperate and tropical maize improvement. Here we report an analysis of 532,815 polymorphisms from a maize association panel consisting of 368 diverse temperate and tropical inbred lines. We developed a gene-oriented approach adapting exonic polymorphisms to identify recently selected alleles by comparing haplotypes across the maize genome. This analysis revealed evidence of selection for more than 1100 genomic regions during recent improvement, and included regulatory genes and key genes with visible mutant phenotypes...
2017: PloS One
https://www.readbyqxmd.com/read/28098948/phosphorus-acquisition-efficiency-in-arbuscular-mycorrhizal-maize-is-correlated-with-the-abundance-of-root-external-hyphae-and-the-accumulation-of-transcripts-encoding-pht1-phosphate-transporters
#8
Ruairidh J H Sawers, Simon F Svane, Clement Quan, Mette Grønlund, Barbara Wozniak, Mesfin-Nigussie Gebreselassie, Eliécer González-Muñoz, Ricardo A Chávez Montes, Ivan Baxter, Jerome Goudet, Iver Jakobsen, Uta Paszkowski
Plant interactions with arbuscular mycorrhizal fungi have long attracted interest for their potential to promote more efficient use of mineral resources in agriculture. Their use, however, remains limited by a lack of understanding of the processes that determine the outcome of the symbiosis. In this study, the impact of host genotype on growth response to mycorrhizal inoculation was investigated in a panel of diverse maize lines. A panel of 30 maize lines was evaluated with and without inoculation with arbuscular mycorrhizal fungi...
January 18, 2017: New Phytologist
https://www.readbyqxmd.com/read/28098812/novel-aflatoxin-degrading-enzyme-from-bacillus-shackletonii-l7
#9
Liang Xu, Mohamed Farah Eisa Ahmed, Lancine Sangare, Yueju Zhao, Jonathan Nimal Selvaraj, Fuguo Xing, Yan Wang, Hongping Yang, Yang Liu
Food and feed contamination by aflatoxin (AF)B₁ has adverse economic and health consequences. AFB₁ degradation by microorganisms or microbial enzymes provides a promising preventive measure. To this end, the present study tested 43 bacterial isolates collected from maize, rice, and soil samples for AFB₁-reducing activity. The higher activity was detected in isolate L7, which was identified as Bacillus shackletonii. L7 reduced AFB₁, AFB₂, and AFM₁ levels by 92.1%, 84.1%, and 90.4%, respectively, after 72 h at 37 °C...
January 14, 2017: Toxins
https://www.readbyqxmd.com/read/28096902/functional-characterization-of-the-active-mutator-like-transposable-element-muta1-from-the-mosquito-aedes-aegypti
#10
Kun Liu, Susan R Wessler
BACKGROUND: Mutator-like transposable elements (MULEs) are widespread with members in fungi, plants, and animals. Most of the research on the MULE superfamily has focused on plant MULEs where they were discovered and where some are extremely active and have significant impact on genome structure. The maize MuDR element has been widely used as a tool for both forward and reverse genetic studies because of its high transposition rate and preference for targeting genic regions. However, despite being widespread, only a few active MULEs have been identified, and only one, the rice Os3378, has demonstrated activity in a non-host organism...
2017: Mobile DNA
https://www.readbyqxmd.com/read/28093652/structural-basis-for-the-isotype-specific-interactions-of-ferredoxin-and-ferredoxin-nadp-oxidoreductase-an-evolutionary-switch-between-photosynthetic-and-heterotrophic-assimilation
#11
Fumio Shinohara, Genji Kurisu, Guy Hanke, Caroline Bowsher, Toshiharu Hase, Yoko Kimata-Ariga
In higher plants, ferredoxin (Fd) and ferredoxin-NADP(+) reductase (FNR) are each present as distinct isoproteins of photosynthetic type (leaf type) and non-photosynthetic type (root type). Root-type Fd and FNR are considered to facilitate the electron transfer from NADPH to Fd in the direction opposite to that occurring in the photosynthetic processes. We previously reported the crystal structure of the electron transfer complex between maize leaf FNR and Fd (leaf FNR:Fd complex), providing insights into the molecular interactions of the two proteins...
January 16, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28081280/evaluation-on-the-germplasm-of-maize-zea-mays-l-landraces-from-southwest-china
#12
F B Chen, Q L Yao, H F Liu, P Fang
Because of their local adaptation and economic factors that limit the adoption of commercial hybrids, farmer-saved maize landraces are still grown over a considerable area concentrated in southwest China. To evaluate the potential of using maize landraces, the germplasm characteristics of 96 landraces from southwest China were evaluated at phenotypic, cellular, and molecular levels. The existence of high phenotypic variation and elite germplasm tolerant to low-N, low-P, as well as drought stress was observed...
December 23, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28081252/corn-soy-blend-fortified-with-phosphorus-to-prevent-refeeding-hypophosphatemia-in-undernourished-piglets
#13
Anne-Louise Hother, Mikkel Lykke, Torben Martinussen, Hanne Damgaard Poulsen, Christian Mølgaard, Per Torp Sangild, André Briend, Christian Fink Hansen, Henrik Friis, Kim F Michaelsen, Thomas Thymann
BACKGROUND: Phosphorus (P) levels in refeeding diets are very important as undernourished children are at risk of hypophosphatemia during refeeding. For this reason, conventional corn-soy-blends (CSB) have been reformulated by the World Food Programme to obtain a mono-calcium-phosphate fortified product (CSB+) and a product further fortified with skim milk powder (CBS++). METHODS: Using a piglet model of undernourished children, we hypothesized that feeding of CSB+, CSB++ or CSB+ with added whey permeate (CSB+/wp) would help to prevent refeeding hypophosphatemia...
2017: PloS One
https://www.readbyqxmd.com/read/28079247/dynamic-location-changes-of-bub1-phosphorylated-h2athr133-with-cenh3-nucleosome-in-maize-centromeric-regions
#14
Handong Su, Yalin Liu, Qianhua Dong, Chao Feng, Jing Zhang, Yang Liu, James A Birchler, Fangpu Han
The genomic stability of all organisms requires precise cell division with proper chromosome orientation. The Bub1-H2Aph-Sgo1 pathway and spindle assembly checkpoint (SAC) components have been identified in yeast and mammals that are important for sister centromere orientation and chromosome segregation. However, their roles in plants are not clear. Maize meiotic mutants and minichromosomes were used to study the role of H2AThr133 phosphorylation and SAC components in sister centromere orientation and chromosome segregation...
January 12, 2017: New Phytologist
https://www.readbyqxmd.com/read/28078801/abnormal-pollen-vacuolation1-apv1-is-required-for-male-fertility-by-contributing-to-anther-cuticle-and-pollen-exine-formation-in-maize
#15
Yamuna Somaratne, Youhui Tian, Hua Zhang, Mingming Wang, Yanqing Huo, Fengge Cao, Li Zhao, Huabang Chen
Anther cuticle and pollen exine are the major protective barriers against various stresses. The proper functioning of genes expressed in the tapetum is vital for the development of pollen exine and anther cuticle. In this study, we report a tapetum-specific gene, Abnormal Pollen Vacuolation1 (APV1), in maize that affects anther cuticle and pollen exine formation. The apv1 mutant was completely male sterile. Its microspores were swollen, less vacuolated, with a flat and empty anther locule. In the mutant, the anther epidermal surface was smooth, shiny, and plate-shaped compared with the three-dimensional crowded ridges and randomly formed wax crystals on the epidermal surface of the wild type...
January 12, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28077530/impact-of-balanced-tetrastarch-raw-material-on-perioperative-blood-loss-a-randomized-double-blind-controlled-trial
#16
A Joosten, R Tircoveanu, S Arend, P Wauthy, P Gottignies, P Van der Linden
BACKGROUND: As 6% hydroxyethyl starch (HES) 130/0.40 or 130/0.42 can originate from different vegetable sources, they might have different clinical effects. The purpose of this prospective, randomized, double-blind controlled trial was to compare two balanced tetrastarch solutions, one maize-derived and one potato-derived, on perioperative blood loss in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB). METHODS: We randomly assigned 118 patients undergoing elective cardiac surgery into two groups, to receive either a maize- or a potato-derived HES solution...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28077194/the-response-of-weaned-piglets-to-dietary-valine-and-leucine
#17
F Meyer, C Jansen van Rensburg, R M Gous
Valine (Val) is considered to be the fifth-limiting amino acid in a maize-soyabean meal diet for pigs. Excess leucine (Leu) levels often occur in commercial diets, which may attenuate the effect of Val deficiency because of an increased oxidation of Val. The objective of the present experiment was to determine the effect of increasing concentrations of Leu on the response of young piglets to dietary Val. In all, 75 Large White×Landrace entire male pigs, 44 days of age and with a mean starting weight of 13...
January 12, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28076417/colonization-of-wheat-maize-and-cucumber-by-paenibacillus-polymyxa-wly78
#18
Tianyi Hao, Sanfeng Chen
Paenibacillus polymyxa WLY78 is a nitrogen fixer and it can be potentially applied to biofertilizer in agriculture. In this study, P. polymyxa WLY78 is labelled with gfp gene. The GFP-labelled P. polymyxa WLY78 is used to inoculate wheat, maize and cucumber seedlings grown in the gnotobiotic system and in soil, respectively. Observation by confocal laser scanning microscope reveals that the GFP-labeled bacterial cells are mainly located on the root surface and epidermis of wheat, and only a few cells are present within cortical cells...
2017: PloS One
https://www.readbyqxmd.com/read/28073340/a-comparative-genomic-analysis-of-putative-pathogenicity-genes-in-the-host-specific-sibling-species-colletotrichum-graminicola-and-colletotrichum-sublineola
#19
E A S Buiate, K V Xavier, N Moore, M F Torres, M L Farman, C L Schardl, L J Vaillancourt
BACKGROUND: Colletotrichum graminicola and C. sublineola cause anthracnose leaf and stalk diseases of maize and sorghum, respectively. In spite of their close evolutionary relationship, the two species are completely host-specific. Host specificity is often attributed to pathogen virulence factors, including specialized secondary metabolites (SSM), and small-secreted protein (SSP) effectors. Genes relevant to these categories were manually annotated in two co-occurring, contemporaneous strains of C...
January 10, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28072835/storage-of-maize-in-purdue-improved-crop-storage-pics-bags
#20
Scott B Williams, Larry L Murdock, Dieudonne Baributsa
Interest in using hermetic technologies as a pest management solution for stored grain has risen in recent years. One hermetic approach, Purdue Improved Crop Storage (PICS) bags, has proven successful in controlling the postharvest pests of cowpea. This success encouraged farmers to use of PICS bags for storing other crops including maize. To assess whether maize can be safely stored in PICS bags without loss of quality, we carried out laboratory studies of maize grain infested with Sitophilus zeamais (Motshulsky) and stored in PICS triple bags or in woven polypropylene bags...
2017: PloS One
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