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https://www.readbyqxmd.com/read/29774513/coordinated-effects-of-lead-toxicity-and-nutrient-deprivation-on-growth-oxidative-status-and-elemental-composition-of-primed-and-non-primed-rice-seedlings
#1
Fahad Khan, Saddam Hussain, Mohsin Tanveer, Sehrish Khan, Hafiz Athar Hussain, Biland Iqbal, Mingjian Geng
Rice crop is highly susceptible to the toxic levels of lead (Pb) during early growth stages. Moreover, a sufficient availability of mineral nutrients is critical for survival of plants particularly under stressful conditions. An experiment was carried out to unravel the coordinated effects of Pb stress (1-mM PbCl2 ) and different nutrient treatments (sufficient nutrient supply, nitrogen (N) deprivation, phosphorus (P) deprivation, and potassium (K) deprivation) on morphological growth, reactive oxygen species (ROS), antioxidants, and nutrient status in primed and non-primed rice seedlings...
May 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29774038/altered-expression-of-the-malate-permeable-anion-channel-osalmt4-reduces-the-growth-of-rice-under-low-radiance
#2
Jie Liu, Muyun Xu, Gonzalo M Estavillo, Emmanuel Delhaize, Rosemary G White, Meixue Zhou, Peter R Ryan
We examined the function of OsALMT4 in rice ( Oryza sativa L.) which is a member of the aluminum-activated malate transporter family. Previous studies showed that OsALMT4 localizes to the plasma membrane and that expression in transgenic rice lines results in a constitutive release of malate from the roots. Here, we show that OsALMT4 is expressed widely in roots, shoots, flowers, and grain but not guard cells. Expression was also affected by ionic and osmotic stress, light and to the hormones ABA, IAA, and salicylic acid...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29773009/cloning-and-characterization-of-promoters-of-the-fungal-immunomodulatory-protein-genes-from-ganoderma-spp-agaricomycetes-and-their-response-to-methyl-jasmonate-and-salicylic-acid
#3
Qi-Zhang Li, Yu-Zhou Chang, Kai-Qi Su, Xiao-Lei Wang, Xiao-Hui Bai, Xuan-Wei Zhou
Ganoderma mushrooms for medicinal use contain various bioactive compounds, but the genetic elements available for these medicinal mushrooms are still limited. In this study we cloned and analyzed the promoters of fungal immunomodulatory protein (FIP) genes from G. lucidum and G. atrum. FIP gene expression was induced by different concentrations of methyl jasmonate (MeJA) and salicylic acid (SA), and messenger RNA expression was detected by quantitative reverse-transcription polymerase chain reaction. The results provided 5' upstream sequences of FIP genes from G...
2018: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29768484/herbivory-responsive-calmodulin-like-protein-cml9-does-not-guide-jasmonate-mediated-defenses-in-arabidopsis-thaliana
#4
Monika Heyer, Sandra S Scholz, Dagmar Voigt, Michael Reichelt, Didier Aldon, Ralf Oelmüller, Wilhelm Boland, Axel Mithöfer
Calcium is an important second messenger in plants that is released into the cytosol early after recognition of various environmental stimuli. Decoding of such calcium signals by calcium sensors is the key for the plant to react appropriately to each stimulus. Several members of Calmodulin-like proteins (CMLs) act as calcium sensors and some are known to mediate both abiotic and biotic stress responses. Here, we study the role of the Arabidopsis thaliana CML9 in different stress responses. CML9 was reported earlier as defense regulator against Pseudomonas syringae...
2018: PloS One
https://www.readbyqxmd.com/read/29763836/salicylic-acid-and-nitric-oxide-alleviate-high-temperature-induced-oxidative-damage-in-lablab-purpureus-l-plants-by-regulating-bio-physical-processes-and-dna-methylation
#5
Krishna Kumar Rai, Nagendra Rai, Shashi Pandey Rai
Salicylic acid (SA) and sodium nitroprusside (SNP, NO donor) modulates plant growth and development processes and recent findings have also revealed their involvement in the regulation of epigenetic factors under stress condition. In the present study, some of these factors were comparatively studied in hyacinth bean plants subjected to high temperature (HT) environment (40-42 °C) with and without exogenous application of SA and SNP under field condition. Exogenous application of SA and SNP substantially modulated the growth and biophysical process of hyacinth bean plants under HT environment...
April 26, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29762698/the-role-of-plant-abiotic-factors-on-the-interactions-between-cnaphalocrocis-medinalis-lepidoptera-crambidae-and-its-host-plant
#6
Kun-Yu Tu, Shin-Fu Tsai, Tzu-Wei Guo, Hou-Ho Lin, Zhi-Wei Yang, Chung-Ta Liao, Wen-Po Chuang
Atmospheric temperature increases along with increasing atmospheric CO2 concentration. This is a major concern for agroecosystems. Although the impact of an elevated temperature or increased CO2 has been widely reported, there are few studies investigating the combined effect of these two environmental factors on plant-insect interactions. In this study, plant responses (phenological traits, defensive enzyme activity, secondary compounds, defense-related gene expression and phytohormone) of Cnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae) -susceptible and resistant rice under various conditions (environment, soil type, variety, C...
May 12, 2018: Environmental Entomology
https://www.readbyqxmd.com/read/29761439/an-uhplc-ms-ms-method-for-target-profiling-of-stress-related-phytohormones
#7
Ondřej Novák, Kristýna Floková
The methodology described here represents an improved strategy for analysis of a broad range of stress-related plant hormones including jasmonates, salicylic acid, abscisic acid, and auxin metabolites. The method conditions are optimized in order to reduce the background effect of complicated plant matrix, allow effective preconcentration and thus perform highly sensitive profiling of multiple plant hormones by ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS).
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29760960/biochemical-and-molecular-screening-of-varieties-of-chili-plants-that-are-resistant-against-fusarium-wilt-infection
#8
Sobiya Shafique, Shazia Shafique, Aqeel Ahmad
Pakistan holds the position of top chilies producers. So Capsicum annuum L. production in Pakistan should be promoted by combating against diseases. The only solution is to cultivate resistant varieties. Presently six chili varieties were treated with Fusarium oxysporum Schlecht. and screened for the most resistant and the most susceptible varieties. Representative varieties were evaluated for their biochemical and transcriptional profiles to discover the bases of antifungal-resistance. Results concluded that the most resistant variety was "Dandicut" and the most susceptible was "Ghotki"...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29760094/salicylic-acid-independent-role-of-npr1-is-required-for-protection-from-proteotoxic-stress-in-the-plant-endoplasmic-reticulum
#9
Ya-Shiuan Lai, Luciana Renna, John Yarema, Cristina Ruberti, Sheng Yang He, Federica Brandizzi
The unfolded protein response (UPR) is an ancient signaling pathway designed to protect cells from the accumulation of unfolded and misfolded proteins in the endoplasmic reticulum (ER). Because misregulation of the UPR is potentially lethal, a stringent surveillance signaling system must be in place to modulate the UPR. The major signaling arms of the plant UPR have been discovered and rely on the transcriptional activity of the transcription factors bZIP60 and bZIP28 and on the kinase and ribonuclease activity of IRE1, which splices mRNA to activate bZIP60...
May 14, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29758376/ethylene-signaling-cross-talk-with-other-hormones-in-arabidopsis-thaliana-exposed-to-contrasting-phosphate-availability-differential-effects-in-roots-leaves-and-fruits
#10
Sergi Munné-Bosch, Bárbara Simancas, Maren Müller
Ethylene signaling plays a major role in the regulation of plant growth, but its cross-talk with other phytohormones is still poorly understood. Here, we investigated whether or not a defect in ethylene signaling, particularly in the ETHYLENE INSENSITIVE3 (EIN3) transcription factor, alters plant growth and influences the contents of other phytohormones. With this aim, a hormonal profiling approach using ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) was used to unravel organ-specific responses (in roots, leaves and fruits) in the ein3-1 mutant and wild-type A...
May 4, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29755494/transcription-factor-smwrky1-positively-promotes-the-biosynthesis-of-tanshinones-in-salvia-miltiorrhiza
#11
Wenzhi Cao, Yao Wang, Min Shi, Xiaolong Hao, Weiwei Zhao, Yu Wang, Jie Ren, Guoyin Kai
Tanshinones, one group of bioactive diterpenes, were widely used in the treatment of cardiovascular diseases. WRKYs play important roles in plant metabolism, but their regulation mechanism in Salvia miltiorrhiza remains elusive. In this study, one WRKY transcription factor SmWRKY1 was isolated and functionally characterized from S. miltiorrhiza . Multiple sequence alignment and phylogenetic tree analysis showed SmWRKY1 shared high homology with other plant WRKYs such as CrWRKY1. SmWRKY1 was found predominantly expressed in leaves and stems, and was responsive to salicylic acid (SA), methyl jasmonate (MeJA), and nitric oxide (NO) treatment...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29755482/silicon-improves-chilling-tolerance-during-early-growth-of-maize-by-effects-on-micronutrient-homeostasis-and-hormonal-balances
#12
Narges Moradtalab, Markus Weinmann, Frank Walker, Birgit Höglinger, Uwe Ludewig, Guenter Neumann
Low soil temperature in spring is a major constraint for the cultivation of tropical and subtropical crops in temperate climates, associated with inhibition of root growth and activity, affecting early growth and frequently plant performance and final yield. This study was initiated to investigate the physiological base of cold-protective effects induced by supplementation with silicon (Si), widely recommended as a stress-protective mineral nutrient. Maize was used as a cold-sensitive model plant, exposed to chilling stress and low root-zone temperature (RZT) during early growth in a lab to field approach...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29755447/stomatal-closure-and-sa-ja-et-signaling-pathways-are-essential-for-bacillus-amyloliquefaciens-fzb42-to-restrict-leaf-disease-caused-by-phytophthora-nicotianae-in-nicotiana-benthamiana
#13
Liming Wu, Ziyang Huang, Xi Li, Liumin Ma, Qin Gu, Huijun Wu, Jia Liu, Rainer Borriss, Zhen Wu, Xuewen Gao
Bacillus amyloliquefaciens FZB42 is a plant growth-promoting rhizobacterium that induces resistance to a broad spectrum of pathogens. This study analyzed the mechanism by which FZB42 restricts leaf disease caused by Phytophthora nicotianae in Nicotiana benthamiana . The oomycete foliar pathogen P. nicotianae is able to reopen stomata which had been closed by the plant innate immune response to initiate penetration and infection. Here, we showed that root colonization by B. amyloliquefaciens FZB42 restricted pathogen-mediated stomatal reopening in N...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29754465/pbrmir397a-regulates-lignification-during-stone-cell-development-in-pear-fruit
#14
Cheng Xue, Jia-Long Yao, Meng-Fan Qin, Ming-Yue Zhang, Andrew C Allan, De-Fu Wang, Jun Wu
Lignified stone cells substantially reduce fruit quality. Therefore, it is desirable to inhibit stone cell development by using genetic technologies. However, the molecular mechanisms regulating lignification are poorly understood in fruit stone cells. In this study, we have shown that microRNA (miR) miR397a regulates fruit cell lignification by inhibiting laccase (LAC) genes that encode key lignin biosynthesis enzymes. Transient overexpression of PbrmiR397a, which is the miR397a of Chinese pear (Pyrus bretschneideri), and simultaneous silencing of three LAC genes reduced the lignin content and stone cell number in pear fruit...
May 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29754149/the-role-of-dipyrone-in-the-high-development-of-on-treatment-platelet-reactivity-in-acetylsalicylic-acid-treated-patients-undergoing-peripheral-artery-revascularization
#15
Jan Hartinger, Robert Novotny, Jana Bilkova, Tomas Kvasnicka, Petr Mitas, Martin Sima, Jaroslav Hlubocky, Jan Kvasnicka, Ondrej Slanar, Jaroslav Lindner
OBJECTIVE: To evaluate the effects of dipyrone on sensitivity to Aspirin [acetyl salicylic acid, (ASA)] in patients who underwent peripheral artery vascular reconstruction. SUBJECTS AND METHODS: Impedance aggregometry and light transmission aggregometry were used to determine the effects of dipyrone on ASA treatment in 21 patients. Blood samples were drawn in a 7-day period after the surgery. The cut-off value for high on-treatment platelet reactivity (HTPR) was set at < 65% of aggregation inhibition for impedance aggregometry...
May 13, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29753809/integrative-analysis-of-long-non-coding-rna-acting-as-cernas-involved-in-chilling-injury-in-tomato-fruit
#16
Yunxiang Wang, Lipu Gao, Benzhong Zhu, Hongliang Zhu, Yunbo Luo, Qing Wang, Jinhua Zuo
Long-non-coding RNA (LncRNA) is a kind of non-coding endogenous RNA that plays essential roles in diverse biological processes and various stress responses. To identify and elucidate the intricate regulatory roles of lncRNAs in chilling injury in tomato fruit, deep sequencing and bioinformatics methods were performed here. After strict screening, a total of 1411 lncRNAs were identified. Among these lncRNAs, 239 of them were significantly differentially expressed. A large amount of target genes were identified and many of them were found to code chilling stress related proteins, including redox reaction related enzyme, important enzymes about cell wall degradation, membrane lipid peroxidation related enzymes, heat and cold shock protein, energy metabolism related enzymes, salicylic acid and abscisic acid metabolism related genes...
May 10, 2018: Gene
https://www.readbyqxmd.com/read/29753632/npr1-in-jazzset-with-pathogen-effectors
#17
Yali Sun, Thomas Ward Detchemendy, Karolina Marta Pajerowska-Mukhtar, M Shahid Mukhtar
NON-EXPRESSOR OF PATHOGENESIS-RELATED GENES 1 (NPR1) is a master regulator of salicylic acid (SA)-mediated systemic acquired resistance (SAR), a broad-spectrum disease resistance mechanism in plants. NPR1 controls approximately 90% of SA-dependent transcriptome in Arabidopsis. Here, we discuss how pathogen effectors manipulate NPR1 functions in different cellular compartments to establish disease.
May 9, 2018: Trends in Plant Science
https://www.readbyqxmd.com/read/29753327/corynebacterium-glutamicum-as-platform-for-the-production-of-hydroxybenzoic-acids
#18
Nicolai Kallscheuer, Jan Marienhagen
BACKGROUND: Hydroxybenzoic acids are industrially relevant aromatic compounds, which also play key roles in the microbial carbon metabolism, e.g., as precursors for the synthesis of cofactors or metal-chelating molecules. Due to its pronounced resistance to aromatics Corynebacterium glutamicum represents an interesting platform for production of these compounds. Unfortunately, a complex catabolic network for aromatic molecules prevents application of C. glutamicum for microbial production of aromatic compounds other than aromatic amino acids, which cannot be metabolized by this microorganism...
May 12, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29753136/the-allelochemical-trans-cinnamic-acid-stimulates-salicylic-acid-production-and-galactose-pathway-in-maize-leaves-a-potential-mechanism-of-stress-tolerance
#19
Fabrizio Araniti, Antonio Lupini, Antonio Mauceri, Antonino Zumbo, Francesco Sunseri, Maria Rosa Abenavoli
In this study, the effects (5 days) of the secondary metabolite trans-cinnamic acid on maize leaves (Zea mays L.), through a physiological and an untargeted metabolomic approach, were evaluated. A reduction in leaf growth and development accompanied by a decrease in protein content was observed in treated seedlings. Besides, trans-cinnamic acid stimulated the photosynthetic machinery with a significant increment in pigment content (chlorophyll a, b and carotenoids), a stimulation of the light adapted PSII efficiency (ɸII ) as well as the chlorophyll a fluorescence (YNO ), the apparent electron transport rate, and the regulated dissipation of the energy (YNPQ )...
May 5, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29751654/biodegradation-of-di-2-ethylhexyl-phthalate-by-rhodococcus-ruber-yc-yt1-in-contaminated-water-and-soil
#20
Ting Yang, Lei Ren, Yang Jia, Shuanghu Fan, Junhuan Wang, Jiayi Wang, Ruth Nahurira, Haisheng Wang, Yanchun Yan
Di-(2-ethylehxyl) phthalate (DEHP) is one of the most broadly representative phthalic acid esters (PAEs) used as a plasticizer in polyvinyl chloride (PVC) production, and is considered to be an endocrine-disrupting chemical. DEHP and its monoester metabolites are responsible for adverse effects on human health. An efficient DEHP-degrading bacterial strain Rhodococcus ruber YC-YT1, with super salt tolerance (0⁻12% NaCl), is the first DEHP-degrader isolated from marine plastic debris found in coastal saline seawater...
May 11, 2018: International Journal of Environmental Research and Public Health
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