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https://www.readbyqxmd.com/read/27936160/a-cbl-interacting-protein-kinase-tacipk2-confers-drought-tolerance-in-transgenic-tobacco-plants-through-regulating-the-stomatal-movement
#1
Yan Wang, Tao Sun, Tingting Li, Meng Wang, Guangxiao Yang, Guangyuan He
In plants, the CBL-CIPK signaling pathways play key roles in the response to abiotic stresses. However, functional studies of CIPKs in the important staple crop wheat are very rare. In this study, we identified a CIPK gene from wheat, designated TaCIPK2. Expression analysis results showed that TaCIPK2 could be up-regulated in wheat leaves by polyethylene glycol, abscisic acid and H2O2 treatments. Subcellular localization analyses revealed that TaCIPK2 was present in whole wheat epidermal cells. A yeast two-hybrid assay indicated that TaCIPK2 interacted with TaCBL1, 2, 3 and 4 in vitro...
2016: PloS One
https://www.readbyqxmd.com/read/27936012/sugarcane-transcriptome-analysis-in-response-to-infection-caused-by-acidovorax-avenae-subsp-avenae
#2
Ailton B Santa Brigida, Cristian A Rojas, Clícia Grativol, Elvismary M de Armas, Júlio O P Entenza, Flávia Thiebaut, Marcelo de F Lima, Laurent Farrinelli, Adriana S Hemerly, Sérgio Lifschitz, Paulo C G Ferreira
Sugarcane is an important tropical crop mainly cultivated to produce ethanol and sugar. Crop productivity is negatively affected by Acidovorax avenae subsp avenae (Aaa), which causes the red stripe disease. Little is known about the molecular mechanisms triggered in response to the infection. We have investigated the molecular mechanism activated in sugarcane using a RNA-seq approach. We have produced a de novo transcriptome assembly (TR7) from sugarcane RNA-seq libraries submitted to drought and infection with Aaa...
2016: PloS One
https://www.readbyqxmd.com/read/27936004/effects-of-drought-stress-on-fusarium-crown-rot-development-in-barley
#3
Xinlun Liu, Chunji Liu
Fusarium crown rot (FCR), caused by various Fusarium species, is a chronic disease of cereals in many semi-arid regions worldwide. To clarify what effects drought-stress may have on FCR development, visual assessment, histological analysis and quantitative PCR were used to analyse the infection process of F. pseudograminearum in barley. This study observed for the first time that the severity of FCR symptom reflects the quantity of pathogens in infected tissues of barley under both drought-stressed and well-watered conditions...
2016: PloS One
https://www.readbyqxmd.com/read/27935960/hydrological-regime-and-water-shortage-as-drivers-of-the-seasonal-incidence-of-diarrheal-diseases-in-a-tropical-montane-environment
#4
Laurie Boithias, Marc Choisy, Noy Souliyaseng, Marine Jourdren, Fabrice Quet, Yves Buisson, Chanthamousone Thammahacksa, Norbert Silvera, Keooudone Latsachack, Oloth Sengtaheuanghoung, Alain Pierret, Emma Rochelle-Newall, Sylvia Becerra, Olivier Ribolzi
BACKGROUND: The global burden of diarrhea is a leading cause of morbidity and mortality worldwide. In montane areas of South-East Asia such as northern Laos, recent changes in land use have induced increased runoff, soil erosion and in-stream suspended sediment loads, and potential pathogen dissemination. To our knowledge, few studies have related diarrhea incidences to catchment scale hydrological factors such as river discharge, and loads of suspended sediment and of Fecal Indicator Bacteria (FIB) such as Escherichia coli, together with sociological factors such as hygiene practices...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27935412/rice-oserf71-mediated-root-modification-affects-shoot-drought-tolerance
#5
Dong-Keun Lee, Suin Yoon, Youn Shic Kim, Ju-Kon Kim
Drought is the most serious problem that impedes crop development and productivity worldwide. Although several studies have documented the root architecture adaption for drought tolerance, little is known about the underlying molecular mechanisms. Our latest study demonstrated that overexpression of the OsERF71 in rice roots under drought conditions modifies root structure including larger aerenchyma and radial root growth, and thereby, protects the rice plants from drought stresses. The OsERF71-mediated root modifications are caused by combinatory overexpression of general stress-inducible, cell wall-associated and lignin biosynthesis genes that contribute to drought tolerance...
December 9, 2016: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/27935178/simple-additive-simulation-overestimates-real-influence-altered-nitrogen-and-rainfall-modulate-the-effect-of-warming-on-soil-carbon-fluxes
#6
Xiangyin Ni, Wanqin Yang, Zemin Qi, Shu Liao, Zhenfeng Xu, Bo Tan, Bin Wang, Qinggui Wu, Changkun Fu, Chengming You, Fuzhong Wu
Experiments and models have led to a consensus that there is positive feedback between carbon (C) fluxes and climate warming. However, the effect of warming may be altered by regional and global changes in nitrogen (N) and rainfall levels, but the current understanding is limited. Through synthesizing global data on soil C pool, input and loss from experiments simulating N deposition, drought and increased precipitation, we quantified the responses of soil C fluxes and equilibrium to the three single factors and their interactions with warming...
December 9, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27935165/long-term-forest-resilience-to-climate-change-indicated-by-mortality-regeneration-and-growth-in-semi-arid-southern-siberia
#7
Chongyang Xu, Hongyan Liu, Oleg A Anenkhonov, Andrey Yu Korolyuk, Denis V Sandanov, Larisa D Balsanova, Bulat B Naidanov, Xiuchen Wu
Several studies have documented that regional climate warming and the resulting increase in drought stress have triggered increased tree mortality in semi-arid forests with unavoidable impacts on regional and global carbon sequestration. Although climate warming is projected to continue into the future, studies examining long-term resilience of semi-arid forests against climate change are limited. In this study, long-term forest resilience was defined as the capacity of forest recruitment to compensate for losses from mortality...
December 9, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27935108/abscisic-acid-and-transpiration-rate-are-involved-in-the-response-to-boron-toxicity-in-arabidopsis-plants
#8
Miguel Ángel Macho-Rivero, Juan José Camacho-Cristóbal, María Begoña Herrera-Rodríguez, Maren Müller, Sergi Munné-Bosch, Agustín González-Fontes
Boron (B) is an essential microelement for vascular plant development, but its toxicity is a major problem affecting crop yields in arid and semi-arid areas of the world. In the literature, several genes involved in abscisic acid (ABA) signalling and responses are upregulated in Arabidopsis roots after treatment with excess B. It is known that the AtNCED3 gene, which encodes a crucial enzyme for ABA biosynthesis, plays a key role in the plant response to drought stress. In this study, root AtNCED3 expression and shoot ABA content were rapidly increased in wild-type plants upon B-toxicity treatment...
December 9, 2016: Physiologia Plantarum
https://www.readbyqxmd.com/read/27933379/the-role-of-receptor-like-protein-kinases-rlks-in-abiotic-stress-response-in-plants
#9
REVIEW
Yaoyao Ye, Yanfei Ding, Qiong Jiang, Feijuan Wang, Junwei Sun, Cheng Zhu
We review and introduce recent studies on RLK s involved in the abiotic stress response and provide insights into potential regulatory mechanisms for alleviating abiotic stress. Abiotic stresses are important factors affecting plant growth and development, resulting in crop production reduction and even plant death. To survive, plants utilize different mechanisms to respond and adapt to continuously changing environmental factors. Understanding of the molecular mechanisms of plant response to various stresses will aid in improving tolerance of plants to abiotic stress through genetic engineering, which would greatly promote the development of modern agriculture...
December 8, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27933261/efficient-regeneration-system-from-rye-leaf-base-segments
#10
Kamil Haliloglu, Murat Aydin
Rye is second only to wheat among grains most widely used in the making of bread and is also a very important gene resource for breeding and improvement of wheat and other cereal crops owing to tolerance to abiotic stress factors such as low temperatures, drought and poor soil conditions. However, application of biotechnologies has been limited in rye breeding since it is one of the most recalcitrant species in tissue culture. A simple and fast regeneration system from leaf-base segment explant of rye was developed in this study...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933076/overexpression-of-tanac2d-displays-opposite-responses-to-abiotic-stresses-between-seedling-and-mature-stage-of-transgenic-arabidopsis
#11
Quanjun Huang, Yan Wang
Environmental stresses frequently affect plant growth and development, and many genes have been found to be induced by unfavorable environmental conditions. Here, we reported the biological functions of TaNAC2D, a stress-related NAC (NAM, ATAF, and CUC) gene from wheat. TaNAC2D showed transcriptional activator activity in yeast. TaNAC2D-GFP fusion protein was localized in the nucleus of wheat mesophyll protoplasts. TaNAC2D transcript abundance was significantly induced by NaCl, PEG6000, and abscisic acid (ABA) at seedling stage, and repressed by NaCl and PEG6000 at mature plant stage...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27933075/a-non-specific-setaria-italica-lipid-transfer-protein-gene-plays-a-critical-role-under-abiotic-stress
#12
Yanlin Pan, Jianrui Li, Licong Jiao, Cong Li, Dengyun Zhu, Jingjuan Yu
Lipid transfer proteins (LTPs) are a class of cysteine-rich soluble proteins having small molecular weights. LTPs participate in flower and seed development, cuticular wax deposition, also play important roles in pathogen and abiotic stress responses. A non-specific LTP gene (SiLTP) was isolated from a foxtail millet (Setaria italica) suppression subtractive hybridization library enriched for differentially expressed genes after abiotic stress treatments. A semi-quantitative reverse transcriptase PCR analysis showed that SiLTP was expressed in all foxtail millet tissues...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27933070/transcriptional-responses-in-root-and-leaf-of-prunus-persica-under-drought-stress-using-rna-sequencing
#13
Najla Ksouri, Sergio Jiménez, Christina E Wells, Bruno Contreras-Moreira, Yolanda Gogorcena
Prunus persica L. Batsch, or peach, is one of the most important crops and it is widely established in irrigated arid and semi-arid regions. However, due to variations in the climate and the increased aridity, drought has become a major constraint, causing crop losses worldwide. The use of drought-tolerant rootstocks in modern fruit production appears to be a useful method of alleviating water deficit problems. However, the transcriptomic variation and the major molecular mechanisms that underlie the adaptation of drought-tolerant rootstocks to water shortage remain unclear...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27930677/de-novo-sequencing-and-comparative-analysis-of-schima-superba-seedlings-to-explore-the-response-to-drought-stress
#14
Bao-Cai Han, Wei Wei, Xiang-Cheng Mi, Ke-Ping Ma
Schima superba is an important dominant species in subtropical evergreen broadleaved forests of China, and plays a vital role in community structure and dynamics. However, the survival rate of its seedlings in the field is low, and water shortage could be a factor that limits its regeneration. In order to better understand the response of its seedlings to drought stress on a functional genomics scale, RNA-seq technology was utilized in this study to perform a large-scale transcriptome sequencing of the S. superba seedlings under drought stress...
2016: PloS One
https://www.readbyqxmd.com/read/27930317/impact-of-the-syrian-refugee-crisis-on-land-use-and-transboundary-freshwater-resources
#15
Marc François Müller, Jim Yoon, Steven M Gorelick, Nicolas Avisse, Amaury Tilmant
Since 2013, hundreds of thousands of refugees have migrated southward to Jordan to escape the Syrian civil war that began in mid-2011. Evaluating impacts of conflict and migration on land use and transboundary water resources in an active war zone remains a challenge. However, spatial and statistical analyses of satellite imagery for the recent period of Syrian refugee mass migration provide evidence of rapid changes in land use, water use, and water management in the Yarmouk-Jordan river watershed shared by Syria, Jordan, and Israel...
December 5, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27928706/effect-of-water-flux-and-sediment-discharge-of-the-yangtze-river-on-pahs-sedimentation-in-the-estuary
#16
Rufeng Li, Chenghong Feng, Dongxin Wang, Maozhi He, Lijuan Hu, Zhenyao Shen
Historical distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) and their carriers (i.e., organic matter and mineral particles) in the sediment cores of the Yangtze Estuary were investigated, with emphasis laid on the role of the Yangtze River. Grain size component of sediments (clay, silt, and sand) and organic carbon (black carbon and total organic carbon) in the sediment cores were markedly affected by water flux and sediment discharge of the Yangtze River. Qualitative and quantitative analysis results showed that sands and black carbon acted as the main carriers of PAHs...
December 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27928638/the-role-of-peltate-scales-in-desiccation-tolerance-of-pleopeltis-polypodioides
#17
Susan P John, Karl H Hasenstein
The extreme drought tolerance of the resurrection fern is in part the result of the dorsal scales that assist in water distribution and controlled desiccation. We studied the effect of peltate scales on water uptake and loss of the desiccation-tolerant epiphytic fern Pleopeltis polypodioides using optical and FTIR microscopy and staining with calcofluor, solophenyl flavine7GFE, and Ruthenium Red. We provide information on structure, property, and function of the scales by measuring water uptake and dehydration, contact angles, and metabolic activity...
December 7, 2016: Planta
https://www.readbyqxmd.com/read/27927997/genetic-diversity-and-genomic-strategies-for-improving-drought-and-waterlogging-tolerance-in-soybeans
#18
REVIEW
Babu Valliyodan, Heng Ye, Li Song, MacKensie Murphy, J Grover Shannon, Henry T Nguyen
Drought and its interaction with high temperature are the major abiotic stress factors affecting soybean yield and production stability. Ongoing climate changes are anticipated to intensify drought events, which will further impact crop production and food security. However, excessive water also limits soybean production. The success of soybean breeding programmes for crop improvement is dependent on the extent of genetic variation present in the germplasm base. Screening for natural genetic variation in drought- and flooding tolerance-related traits, including root system architecture, water and nitrogen-fixation efficiency, and yield performance indices, has helped to identify the best resources for genetic studies in soybean...
December 7, 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27926733/high-resolution-mapping-of-global-surface-water-and-its-long-term-changes
#19
Jean-François Pekel, Andrew Cottam, Noel Gorelick, Alan S Belward
The location and persistence of surface water (inland and coastal) is both affected by climate and human activity and affects climate, biological diversity and human wellbeing. Global data sets documenting surface water location and seasonality have been produced from inventories and national descriptions, statistical extrapolation of regional data and satellite imagery, but measuring long-term changes at high resolution remains a challenge. Here, using three million Landsat satellite images, we quantify changes in global surface water over the past 32 years at 30-metre resolution...
December 7, 2016: Nature
https://www.readbyqxmd.com/read/27924131/optimizing-micropropagation-of-drought-resistant-pyrus-boissieriana-buhse
#20
Maryam Zakavi, Hossein Askari, Neda Irvani
The present study concentrated on introducing a micropropagation protocol for a drought resistant genotype from Pyrus boissieriana, which is the second most naturally widespread pear species in Iran with proper physiological and medicinal properties. Proliferating microshoot cultures were obtained by placing nodal segments on MS medium supplemented with BAP and IBA or NAA. The highest number of shoots (27 shoots per explant) were obtained with 1.5 mg l(-1) BAP and 0.05 mg l(-1) IBA, but this combination did not produce shoots of desirable length (>1...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
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