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https://www.readbyqxmd.com/read/28081283/transcriptome-analysis-of-peach-prunus-persica-l-batsch-during-the-late-stage-of-fruit-ripening
#1
H F Pan, Y Sheng, Z H Gao, H L Chen, Y J Qi, X K Yi, G H Qin, J Y Zhang
Fruit ripening is a complex developmental process, the details of which remain largely unknown in fleshy fruits. In this paper, the fruit flesh of two peach varieties, "Zhongyou9" (a nectarine; Prunus persica L. Batsch) and its mutant "Hongyu", was analyzed by RNA-seq technology during two stages of ripening at 20-day intervals. One hundred and eighty significant upregulated and two hundred and thirty-five downregulated genes were identified in the experiment. Many of these genes were related to plant hormones, chlorophyll breakdown, accumulation of aroma and flavor volatiles, and stress...
December 23, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28077082/the-arabidopsis-paralogs-pub46-and-pub48-encoding-u-box-e3-ubiquitin-ligases-are-essential-for-plant-response-to-drought-stress
#2
Guy Adler, Zvia Konrad, Lyad Zamir, Amit Kumar Mishra, Dina Raveh, Dudy Bar-Zvi
BACKGROUND: Plants respond to abiotic stress on physiological, biochemical and molecular levels. This includes a global change in their cellular proteome achieved by changes in the pattern of their protein synthesis and degradation. The ubiquitin-proteasome system (UPS) is a key player in protein degradation in eukaryotes. Proteins are marked for degradation by the proteasome by coupling short chains of ubiquitin polypeptides in a three-step pathway. The last and regulatory stage is catalyzed by a member of a large family of substrate-specific ubiquitin ligases...
January 11, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28070322/carotenoid-profiling-of-the-leaves-of-selected-african-eggplant-accessions-subjected-to-drought-stress
#3
Elias K Mibei, Jane Ambuko, James J Giovannoni, Arnold N Onyango, Willis O Owino
African eggplants (Solanum aethiopicum and S. macrocarpon) are among the most economically important and valuable vegetable and fruit crops. They are a major source of biologically active nutritional substances and metabolites which are essential for plant growth, development, stress adaptation and defense. Among these metabolites are the carotenoids which act as accessory pigments for photosynthesis and precursor to plant hormones. Though African eggplants are known to be resistant to various abiotic stresses, the effect of these stresses on secondary metabolites has not been well defined...
January 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28065924/gibberellins-regulate-iron-deficiency-response-by-influencing-iron-transport-and-translocation-in-rice-seedlings-oryza-sativa
#4
Baolan Wang, Haifang Wei, Zhen Xue, Wen-Hao Zhang
BACKGROUND AND AIMS: Gibberellins (GAs) are a class of plant hormones with diverse functions. However, there has been little information on the role of GAs in response to plant nutrient deficiency. METHODS: To evaluate the roles of GAs in regulation of Fe homeostasis, the effects of GA on Fe accumulation and Fe translocation in rice seedlings were investigated using wild-type, a rice mutant (eui1) displaying enhnaced endogenous GA concentrations due to a defect in GA deactivation, and transgenic rice plants overexpressing OsEUI KEY RESULTS: Exposure to Fe-deficient medium significantly reduced biomass of rice plants...
January 8, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28061745/large-scale-transcriptome-comparison-of-sunflower-genes-responsive-to-verticillium-dahliae
#5
Shuchun Guo, Yongchun Zuo, Yanfang Zhang, Chengyan Wu, Wenxia Su, Wen Jin, Haifeng Yu, Yulin An, Qianzhong Li
BACKGROUND: Sunflower Verticillium wilt (SVW) is a vascular disease caused by root infection with Verticillium dahliae (V. dahlia). It is a serious threat to the yield and quality of sunflower. However, chemical and agronomic measures for controlling this disease are not effective. The selection of more resistant genotypes is a desirable strategy to reduce contamination. A deeper knowledge of the molecular mechanisms and genetic basis underlying sunflower Verticillium wilt is necessary to accelerate breeding progress...
January 6, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28054954/plant-growth-biostimulants-dietary-feed-supplements-and-cosmetics-formulated-with-supercritical-co%C3%A2-algal-extracts
#6
REVIEW
Izabela Michalak, Katarzyna Chojnacka, Agnieszka Saeid
The review paper presents the use of algal extracts as safe and solvent-free components of plant growth biostimulants, dietary feed additives and cosmetics. Innovative technology that uses extracts obtained by supercritical CO₂ extraction, as a method of isolation of biologically active compounds from algal biomass, is presented. An important part of the complete technology is the final formulation of the product. This enabled realization of the further step which was assessment of the utilitarian properties of the extract-based products...
January 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28050825/strigolactone-mediated-stimulation-of-secondary-xylem-proliferation-in-stems
#7
Javier Agusti
Secondary xylem (wood) accounts for a large proportion of the terrestrial biomass. Understanding how secondary xylem develops and proliferates is a challenge to enhance our capacities for biomass production. Recent reports revealed that the plant hormone strigolactone is key for the development of secondary xylem. Here, I describe a protocol for strigolactone-mediated stimulation of secondary xylem proliferation in stems. The protocol has been tested in Arabidopsis and Eucalyptus and can be adjusted to other species...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28049765/2016-signaling-breakthroughs-of-the-year
#8
EDITORIAL
Elizabeth M Adler
Signaling breakthroughs of 2016 clustered mainly in the areas of neuroscience, immunology, and metabolism, with excursions into plant hormone signaling and bacterial manipulation of host signaling pathways. Perhaps reflecting the growing maturity of the discipline of cell signaling, many of this year's breakthroughs have implications for the pathogenesis or treatment of human disease.
January 3, 2017: Science Signaling
https://www.readbyqxmd.com/read/28049729/the-plant-hormone-abscisic-acid-is-a-pro-survival-factor-in-human-and-murine-megakaryocytes
#9
Alessandro Malara, Chiara Fresia, Christian Andrea Di Buduo, Paolo Maria Soprano, Francesco Moccia, Cesare Balduini, Elena Zocchi, Antonio De Flora, Alessandra Balduini
Abscisic acid (ABA) is a phytohormone involved in pivotal physiological functions in higher plants. Recently, ABA proved to be secreted and active also in mammals, where it stimulates the activity of innate immune cells, of mesenchymal and hematopoietic stem cells and of insulin-releasing pancreatic β-cells through a signaling pathway involving the second messenger cyclic ADP-ribose (cADPR). In addition to behaving as an animal hormone, ABA holds promise also as nutraceutical plant-derived compound in humans...
January 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28049426/comparative-transcriptome-analysis-of-two-contrasting-watermelon-genotypes-during-fruit-development-and-ripening
#10
Qianglong Zhu, Peng Gao, Shi Liu, Zicheng Zhu, Sikandar Amanullah, Angela R Davis, Feishi Luan
BACKGROUND: Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] is an economically important crop with an attractive ripe fruit that has colorful flesh. Fruit ripening is a complex, genetically programmed process. RESULTS: In this study, a comparative transcriptome analysis was performed to identify the regulators and pathways that are involved in the fruit ripening of pale-yellow-flesh cultivated watermelon (COS) and red-flesh cultivated watermelon (LSW177)...
January 3, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28046013/homologous-recombination-defective-arabidopsis-mutants-exhibit-enhanced-sensitivity-to-abscisic-acid
#11
Sujit Roy, Kali Pada Das
Abscisic acid (ABA) acts as an important plant hormone in regulating various aspects of plant growth and developmental processes particularly under abiotic stress conditions. An increased ABA level in plant cells inhibits DNA replication and cell division, causing plant growth retardation. In this study, we have investigated the effects of ABA on the growth responses of some major loss-of-function mutants of DNA double-stand break (DSB) repair genes in Arabidopsis during seed germination and early stages of seedling growth for understanding the role of ABA in the induction of genome instability in plants...
2017: PloS One
https://www.readbyqxmd.com/read/28045929/detecting-the-hormonal-pathways-in-oilseed-rape-behind-induced-systemic-resistance-by-trichoderma-harzianum-th12-to-sclerotinia-sclerotiorum
#12
Jawadayn Talib Alkooranee, Tamarah Raad Aledan, Ali Kadhim Ali, Guangyuan Lu, Xuekun Zhang, Jiangsheng Wu, Chunhua Fu, Maoteng Li
Plants have the ability to resist pathogen attack after infection or treatment with biotic and abiotic elicitors. In oilseed rape plant Brassica napus AACC and in the artificially synthesized Raphanus alboglabra RRCC, the root-colonizing Trichoderma harzianum TH12 fungus triggers induced systemic resistance (ISR), and its culture filtrate (CF) triggers a systemic acquired resistance (SAR) response against infection by the Sclerotinia sclerotiorum. Salicylic acid (SA) and jasmonic acid/ethylene (JA/ET) are plant hormone signals that play important roles in the regulation of ISR and SAR...
2017: PloS One
https://www.readbyqxmd.com/read/28045179/heck-functionalization-of-an-asymmetric-aza-bodipy-core-synthesis-of-far-red-infrared-probes-for-bioimaging-applications
#13
Stefano Parisotto, Beatrice Lace, Emma Artuso, Chiara Lombardi, Annamaria Deagostino, Roberto Scudu, Claudio Garino, Claudio Medana, Cristina Prandi
As part of our ongoing work on the synthesis of a new class of plant hormones named Strigolactones (SLs) and their analogues, we became interested in tracing bioactive molecules with red emitting BODIPY fluorophores in order to unravel signaling and distribution of SLs in plants. In this paper we report on an unprecedented Heck functionalization of azadipyrromethenes (aza-DIPY) which allows for the introduction of suitable functional groups to convert aza-BODIPY in bioconjugate complexes useful for untangling biological processes...
January 3, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28042677/contrasting-patterns-of-cytokinins-between-years-in-senescing-aspen-leaves
#14
Erik Edlund, Ondrej Novak, Michal Karady, Karin Ljung, Stefan Jansson
Cytokinins are plant hormones that typically block or delay leaf senescence. We profiled 34 different cytokinins/cytokinin metabolites (including precursors, conjugates and degradation products) in leaves of a free-growing mature aspen (Populus tremula) before and after the initiation of autumnal senescence over three consecutive years. The levels and profiles of individual cytokinin species, or classes/groups, varied greatly between years, despite the fact that the onset of autumn senescence was at the same time each year, and senescence was not associated with depletion of either active or total cytokinin levels...
January 1, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28026097/barley-susceptibility-factor-racb-modulates-transcript-levels-of-signalling-protein-genes-in-compatible-interaction-with-blumeria-graminis-f-sp-hordei
#15
Vera Schnepf, A Corina Vlot, Karl Kugler, Ralph Hückelhoven
RHO (rat sarcoma homologue) GTPases are regulators of downstream transcriptional responses of eukaryotes to intracellular and extracellular stimuli. For plants, little is known about the function of Rho-like GTPases (called RACs [rat sarcoma-related C botulinum substrate] or ROPs [RHO of plants]) in transcriptional reprogramming of cells. However, in plant hormone response and innate immunity RAC/ROP proteins influence gene expression patterns. The barley RAC/ROP RACB is required for full susceptibility of barley to the powdery mildew fungus Blumeria graminis f...
December 27, 2016: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28018379/comparative-transcriptomics-of-strawberries-fragaria-spp-provides-insights-into-evolutionary-patterns
#16
Qin Qiao, Li Xue, Qia Wang, Hang Sun, Yang Zhong, Jinling Huang, Jiajun Lei, Ticao Zhang
Multiple closely related species with genomic sequences provide an ideal system for studies on comparative and evolutionary genomics, as well as the mechanism of speciation. The whole genome sequences of six strawberry species (Fragaria spp.) have been released, which provide one of the richest genomic resources of any plant genus. In this study, we first generated seven transcriptome sequences of Fragaria species de novo, with a total of 48,557-82,537 unigenes per species. Combined with 13 other species genomes in Rosales, we reconstructed a phylogenetic tree at the genomic level...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28013174/dwarf-and-short-grain-1-encoding-a-putative-u-box-protein-regulates-cell-division-and-elongation-in-rice
#17
Nan Wang, Yadi Xing, Qijin Lou, Ping Feng, Song Liu, Meidan Zhu, Wuzhong Yin, Shunran Fang, Yan Lin, Tianquan Zhang, Xianchun Sang, Guanghua He
Plant hormones coordinate a plant's responses to environmental stimuli and the endogenous developmental programs for cell division and elongation. Brassinosteroids are among the most important of these hormones in plant development. Recently, the ubiquitin-26S-proteasome system was identified to play a key role in hormone biology. In this study, we analyzed the function of a rice (Oryza sativa) gene, DSG1, which encodes a U-box E3 ubiquitin ligase. In the dsg1 mutant (an allelic mutant of tud1), the lengths of the roots, internodes, panicles, and seeds were shorter than that in the wild-type, which was due to defects in cell division and elongation...
December 7, 2016: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28011690/induced-genome-wide-binding-of-three-arabidopsis-wrky-transcription-factors-during-early-mamp-triggered-immunity
#18
Rainer P Birkenbihl, Barbara Kracher, Imre E Somssich
During microbial-associated molecular pattern (MAMP)-triggered immunity (MTI) molecules derived from microbes are perceived by cell surface receptors and upon signaling to the nucleus initiate a massive transcriptional reprogramming critical to mount an appropriate host defense response. WRKY transcription factors play an important role in regulating these transcriptional processes. Here, we determined on a genome-wide scale the flg22-induced in vivo DNA-binding dynamics of three of the most prominent WRKY factors, WRKY18, WRKY40 and WRKY33...
December 23, 2016: Plant Cell
https://www.readbyqxmd.com/read/28005918/the-plant-hormone-cytokinin-confers-protection-against-oxidative-stress-in-mammalian-cells
#19
Eman M Othman, Muhammed Naseem, Eman Awad, Thomas Dandekar, Helga Stopper
Modulating key dynamics of plant growth and development, the effects of the plant hormone cytokinin on animal cells gained much attention recently. Most previous studies on cytokinin effects on mammalian cells have been conducted with elevated cytokinin concentration (in the μM range). However, to examine physiologically relevant dose effects of cytokinins on animal cells, we systematically analyzed the impact of kinetin in cultured cells at low and high concentrations (1nM-10μM) and examined cytotoxic and genotoxic conditions...
2016: PloS One
https://www.readbyqxmd.com/read/28004240/silencing-of-an-%C3%AE-dioxygenase-gene-ca-dox-retards-growth-and-suppresses-basal-disease-resistance-responses-in-capsicum-annum
#20
Chi Eun Hong, Young-Im Ha, Hyoju Choi, Ju Yeon Moon, Jiyoung Lee, Ah-Young Shin, Chang Jin Park, Gyeong Mee Yoon, Suk-Yoon Kwon, Ick-Hyun Jo, Jeong Mee Park
Alpha-dioxygenases (α-DOX) catalyzing the primary oxygenation of fatty acids to oxylipins were recently found in plants. Here, the biological roles of the pepper α-DOX (Ca-DOX) gene, which is strongly induced during non-host pathogen infection in chili pepper, were examined. Virus-induced gene silencing demonstrated that down-regulation of Ca-DOX enhanced susceptibility to bacterial pathogens and suppressed the hypersensitive response via the suppression of pathogenesis-related genes such as PR4, proteinase inhibitor II and lipid transfer protein (PR14)...
December 21, 2016: Plant Molecular Biology
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