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https://www.readbyqxmd.com/read/27920784/the-arabidopsis-angustifolia3-yoda-gene-cascade-induces-anthocyanin-accumulation-by-regulating-sucrose-levels
#1
Lai-Sheng Meng, Ying-Qiu Li, Meng-Qian Liu, Ji-Hong Jiang
Anthocyanin accumulation specifically depends on sucrose (Suc) signaling/levels. However, the gene cascades specifically involved in the Suc signaling/level-mediated anthocyanin biosynthetic pathway are still unknown. Arabidopsis ANGUSTIFOLIA3 (AN3), a transcription coactivator, is involved in the regulation of leaf shape and drought tolerance. Recently, an AN3-CONSTITUTIVE PHOTOMORPHOGENIC 1 gene cascade has been reported to regulate the light signaling-mediated anthocyanin accumulation. Target gene analysis indicates that AN3 is associated with the YODA (YDA) promoter, a mitogen-activated protein kinase kinase kinase, in vivo for inducing anthocyanin accumulation...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920783/genomic-tools-in-pearl-millet-breeding-for-drought-tolerance-status-and-prospects
#2
REVIEW
Desalegn D Serba, Rattan S Yadav
Pearl millet [Penisetum glaucum (L) R. Br.] is a hardy cereal crop grown in the arid and semiarid tropics where other cereals are likely to fail to produce economic yields due to drought and heat stresses. Adaptive evolution, a form of natural selection shaped the crop to grow and yield satisfactorily with limited moisture supply or under periodic water deficits in the soil. Drought tolerance is a complex polygenic trait that various morphological and physiological responses are controlled by 100s of genes and significantly influenced by the environment...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27917571/comparative-germination-responses-to-water-potential-across-different-populations-of-aegilops-geniculata-and-cultivar-varieties-of-triticum-durum-and-t-aestivum
#3
Simone Orsenigo, Filippo Guzzon, Thomas Abeli, Graziano Rossi, Ilda Vagge, Alma Balestrazzi, Andrea Mondoni, Jonas V Müller
Crop Wild Relatives (CWRs) are often used to improve crop quality and yields, because they contain genetically important traits that can contribute to stress resistance and adaptation. Here, seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf...
December 5, 2016: Plant Biology
https://www.readbyqxmd.com/read/27917186/expression-level-of-the-dreb2-type-gene-identified-with-amplifluor-snp-markers-correlates-with-performance-and-tolerance-to-dehydration-in-bread-wheat-cultivars-from-northern-kazakhstan
#4
Yuri Shavrukov, Aibek Zhumalin, Dauren Serikbay, Makpal Botayeva, Ainur Otemisova, Aiman Absattarova, Grigoriy Sereda, Sergey Sereda, Vladimir Shvidchenko, Arysgul Turbekova, Satyvaldy Jatayev, Sergiy Lopato, Kathleen Soole, Peter Langridge
A panel of 89 local commercial cultivars of bread wheat was tested in field trials in the dry conditions of Northern Kazakhstan. Two distinct groups of cultivars (six cultivars in each group), which had the highest and the lowest grain yield under drought were selected for further experiments. A dehydration test conducted on detached leaves indicated a strong association between rates of water loss in plants from the first group with highest grain yield production in the dry environment relative to the second group...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27917177/progress-on-optimizing-miscanthus-biomass-production-for-the-european-bioeconomy-results-of-the-eu-fp7-project-optimisc
#5
Iris Lewandowski, John Clifton-Brown, Luisa M Trindade, Gerard C van der Linden, Kai-Uwe Schwarz, Karl Müller-Sämann, Alexander Anisimov, C-L Chen, Oene Dolstra, Iain S Donnison, Kerrie Farrar, Simon Fonteyne, Graham Harding, Astley Hastings, Laurie M Huxley, Yasir Iqbal, Nikolay Khokhlov, Andreas Kiesel, Peter Lootens, Heike Meyer, Michal Mos, Hilde Muylle, Chris Nunn, Mensure Özgüven, Isabel Roldán-Ruiz, Heinrich Schüle, Ivan Tarakanov, Tim van der Weijde, Moritz Wagner, Qingguo Xi, Olena Kalinina
This paper describes the complete findings of the EU-funded research project OPTIMISC, which investigated methods to optimize the production and use of miscanthus biomass. Miscanthus bioenergy and bioproduct chains were investigated by trialing 15 diverse germplasm types in a range of climatic and soil environments across central Europe, Ukraine, Russia, and China. The abiotic stress tolerances of a wider panel of 100 germplasm types to drought, salinity, and low temperatures were measured in the laboratory and a field trial in Belgium...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27915455/overexpression-of-atedt1-promotes-root-elongation-and-affects-medicinal-secondary-metabolite-biosynthesis-in-roots-of-transgenic-salvia-miltiorrhiza
#6
Yu Liu, Geng Sun, Zhaohui Zhong, Linyi Ji, Yong Zhang, Jianping Zhou, Xuelian Zheng, Kejun Deng
Medicinal secondary metabolites (salvianolic acids and tanshinones) are valuable natural bioactive compounds in Salvia miltiorrhiza and have widespread applications. Improvement of medicinal secondary metabolite accumulation through biotechnology is necessary and urgent to satisfy their increasing demand. Herein, it was demonstrated that the overexpression of the transcription factor Arabidopsis thaliana-enhanced drought tolerance 1 (AtEDT1) could affect medicinal secondary metabolite accumulation. In this study, we observed that the transgenic lines significantly conferred drought tolerance phenotype...
December 3, 2016: Protoplasma
https://www.readbyqxmd.com/read/27915174/molecular-and-physiological-responses-of-iranian-perennial-ryegrass-as-affected-by-trinexapac-ethyl-paclobutrazol-and-abscisic-acid-under-drought-stress
#7
Mohammad Hossein Sheikh Mohammadi, Nematollah Etemadi, Mohammad Mehdi Arab, Mostafa Aalifar, Mostafa Arab, Mohammad Pessarakli
Drought stress is the major limiting factor which affects turfgrass management in area with restricted rainfall or irrigation water supply. Trinexapac ethyl (TE), Paclobutrazol (PAC) and Abscisic acid (ABA) are three plant growth regulators (PGRs) that are commonly used on turf species for increasing their tolerance to different environmental stresses such as drought. However, little is known about the impact of PGRs on stress tolerance of Iranian Perennial ryegrass (Lolium perenne). The present study was conducted to examine the visual and physiological changes of Iranian Perennial ryegrass in response to foliar application of TE, PAC, and ABA under drought stress conditions...
November 27, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27909441/apple-f-box-protein-mdmax2-regulates-plant-photomorphogenesis-and-stress-response
#8
Jian-Ping An, Rui Li, Feng-Jia Qu, Chun-Xiang You, Xiao-Fei Wang, Yu-Jin Hao
MAX2 (MORE AXILLARY GROWTH2) is involved in diverse physiological processes, including photomorphogenesis, the abiotic stress response, as well as karrikin and strigolactone signaling-mediated shoot branching. In this study, MdMAX2, an F-box protein that is a homolog of Arabidopsis MAX2, was identified and characterized. Overexpression of MdMAX2 in apple calli enhanced the accumulation of anthocyanin. Ectopic expression of MdMAX2 in Arabidopsis exhibited photomorphogenesis phenotypes, including increased anthocyanin content and decreased hypocotyl length...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27909432/volatile-mediated-effects-predominate-in-paraburkholderia-phytofirmans-growth-promotion-and-salt-stress-tolerance-of-arabidopsis-thaliana
#9
Thomas Ledger, Sandy Rojas, Tania Timmermann, Ignacio Pinedo, María J Poupin, Tatiana Garrido, Pablo Richter, Javier Tamayo, Raúl Donoso
Abiotic stress has a growing impact on plant growth and agricultural activity worldwide. Specific plant growth promoting rhizobacteria have been reported to stimulate growth and tolerance to abiotic stress in plants, and molecular mechanisms like phytohormone synthesis and 1-aminocyclopropane-1-carboxylate deamination are usual candidates proposed to mediate these bacterial effects. Paraburkholderia phytofirmans PsJN is able to promote growth of several plant hosts, and improve their tolerance to chilling, drought and salinity...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27908260/-a-proteomics-approach-to-discover-drought-tolerance-proteins-in-wheat-pollen-grain-at-meiosis-stage
#10
Reza Fotovat, Mehdi Alikhani, Mostafa Valizadeh, Mehdi Mirzaei, Ghasem Hossein Salekdeh
Plants reproductive phase, when grain yield and consequently farmers' investment is most in jeopardy, is considered as the most sensitive stage to drought stress. In this study, we aimed to explore the proteomic response of wheat anther at meiosis stage in a drought tolerant, Darab, and susceptible, Shiraz, wheat genotypes. Wheat plants were exposed to drought stress at meiosis stage for four days under controlled environmental conditions. Then, anthers from both genotypes were sampled, and their proteomes were examined via quantitative proteomics analysis...
November 30, 2016: Protein and Peptide Letters
https://www.readbyqxmd.com/read/27904462/overexpression-of-a-pathogenesis-related-protein-10-enhances-biotic-and-abiotic-stress-tolerance-in-rice
#11
Jingni Wu, Sang Gon Kim, Kyu Young Kang, Ju-Gon Kim, Sang-Ryeol Park, Ravi Gupta, Yong Hwan Kim, Yiming Wang, Sun Tae Kim
Pathogenesis-related proteins play multiple roles in plant development and biotic and abiotic stress tolerance. Here, we characterize a rice defense related gene named "jasmonic acid inducible pathogenesis-related class 10" (JIOsPR10) to gain an insight into its functional properties. Semi-quantitative RT-PCR analysis showed up-regulation of JIOsPR10 under salt and drought stress conditions. Constitutive over-expression JIOsPR10 in rice promoted shoot and root development in transgenic plants, however, their productivity was unaltered...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27902798/fast-track-introgression-of-for-root-traits-and-other-drought-tolerance-traits-in-jg-11-an-elite-and-leading-variety-of-chickpea
#12
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27899926/bioinformatic-analyses-of-subgroup-a-members-of-the-wheat-bzip-transcription-factor-family-and-functional-identification-of-tabzip174-involved-in-drought-stress-response
#13
Xueyin Li, Biane Feng, Fengjie Zhang, Yimiao Tang, Liping Zhang, Lingjian Ma, Changping Zhao, Shiqing Gao
Extensive studies in Arabidopsis and rice have demonstrated that Subgroup-A members of the bZIP transcription factor family play important roles in plant responses to multiple abiotic stresses. Although common wheat (Triticum aestivum) is one of the most widely cultivated and consumed food crops in the world, there are limited investigations into Subgroup A of the bZIP family in wheat. In this study, we performed bioinformatic analyses of the 41 Subgroup-A members of the wheat bZIP family. Phylogenetic and conserved motif analyses showed that most of the Subgroup-A bZIP proteins involved in abiotic stress responses of wheat, Arabidopsis, and rice clustered in Clade A1 of the phylogenetic tree, and shared a majority of conserved motifs, suggesting the potential importance of Clade-A1 members in abiotic stress responses...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27895658/overexpression-of-a-hevea-brasiliensis-erbb-3-binding-protein-1-gene-increases-drought-tolerance-and-organ-size-in-arabidopsis
#14
Han Cheng, Xiang Chen, Jianshun Zhu, Huasun Huang
Rubber trees are economically important tropical tree species and the major source of natural rubber, which is an essential industrial material. This tropical perennial tree is susceptible to cold stress and other abiotic stresses, especially in the marginal northern tropics. Recent years, the genome sequencing and RNA-seq projects produced huge amount of sequence data, which greatly facilitated the functional genomics study. However, the characterization of individual functional gene is in urgent demands, especially for those involved in stress resistance...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27892643/the-rice-osnac6-transcription-factor-orchestrates-multiple-molecular-mechanisms-involving-root-structural-adaptions-and-nicotianamine-biosynthesis-for-drought-tolerance
#15
Dong-Keun Lee, Pil Joong Chung, Jin Seo Jeong, Geupil Jang, Seung Woon Bang, Harin Jung, Youn Shic Kim, Sun-Hwa Ha, Yang Do Choi, Ju-Kon Kim
Drought has a serious impact on agriculture worldwide. A plant's ability to adapt to rhizosphere drought stress requires reprograming of root growth and development. Although physiological studies have documented the root adaption for tolerance to the drought stress, underlying molecular mechanisms is still incomplete, which is essential for crop engineering. Here, we identified OsNAC6-mediated root structural adaptations, including increased root number and root diameter, which enhanced drought tolerance. Multiyear drought field tests demonstrated that the grain yield of OsNAC6 root-specific overexpressing transgenic rice lines was less affected by drought stress than were non-transgenic controls...
November 28, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27891618/co2-studies-remain-key-to-understanding-a-future-world
#16
REVIEW
Katie M Becklin, S Michael Walker, Danielle A Way, Joy K Ward
I. II. III. IV. V. References SUMMARY: Characterizing plant responses to past, present and future changes in atmospheric carbon dioxide concentration ([CO2 ]) is critical for understanding and predicting the consequences of global change over evolutionary and ecological timescales. Previous CO2 studies have provided great insights into the effects of rising [CO2 ] on leaf-level gas exchange, carbohydrate dynamics and plant growth. However, scaling CO2 effects across biological levels, especially in field settings, has proved challenging...
November 28, 2016: New Phytologist
https://www.readbyqxmd.com/read/27891145/contrasting-proteomic-and-metabolomic-responses-of-bermudagrass-to-drought-and-salt-stresses
#17
Tiantian Ye, Haitao Shi, Yanping Wang, Fan Yang, Zhulong Chan
Bermudagrass (Cynodon dactylon) is one of tolerant grass species to drought and salt. The comparative analyses of bermudagrass in response to drought and salt stresses at the physiological, proteomic, and metabolomic levels were performed in this study. The physiological results indicated that osmolytes accumulation, ROS level and antioxidant enzyme activities were extensively changed by drought and salt stresses. Through comparative proteomic analyses, we successfully identified a total of 77 proteins involved in photosynthesis, oxidative pentose phosphate, glycolysis, and redox metabolic pathways when exposed to drought and salt stresses...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27891140/drought-and-heat-differentially-affect-xth-expression-and-xet-activity-and-action-in-3-day-old-seedlings-of-durum-wheat-cultivars-with-different-stress-susceptibility
#18
Andrea Iurlaro, Monica De Caroli, Erika Sabella, Mariarosaria De Pascali, Patrizia Rampino, Luigi De Bellis, Carla Perrotta, Giuseppe Dalessandro, Gabriella Piro, Stephen C Fry, Marcello S Lenucci
Heat and drought stress have emerged as major constraints for durum wheat production. In the Mediterranean area, their negative effect on crop productivity is expected to be exacerbated by the occurring climate change. Xyloglucan endotransglucosylase/hydrolases (XTHs) are chief enzymes in cell wall remodeling, whose relevance in cell expansion and morphogenesis suggests a central role in stress responses. In this work the potential role of XTHs in abiotic stress tolerance was investigated in durum wheat. The separate effects of dehydration and heat exposure on XTH expression and its endotransglucosylase (XET) in vitro activity and in vivo action have been monitored, up to 24 h, in the apical and sub-apical root regions and shoots excised from 3-day-old seedlings of durum wheat cultivars differing in stress susceptibility/tolerance...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27889524/early-responses-of-mature-arabidopsis-thaliana-plants-to-reduced-water-potential-in-the-agar-based-polyethylene-glycol-infusion-drought-model
#19
Andrej Frolov, Tatiana Bilova, Gagan Paudel, Robert Berger, Gerd U Balcke, Claudia Birkemeyer, Ludger A Wessjohann
Drought is one of the most important environmental stressors resulting in increasing losses of crop plant productivity all over the world. Therefore, development of new approaches to increase the stress tolerance of crop plants is strongly desired. This requires precise and adequate modeling of drought stress. As this type of stress manifests itself as a steady decrease in the substrate water potential (ψw), agar plates infused with polyethylene glycol (PEG) are the perfect experimental tool: they are easy in preparation and provide a constantly reduced ψw, which is not possible in soil models...
November 10, 2016: Journal of Plant Physiology
https://www.readbyqxmd.com/read/27889478/sequential-enzymatic-saccharification-and-fermentation-of-ionic-liquid-and-organosolv-pretreated-agave-bagasse-for-ethanol-production
#20
Jose A Pérez-Pimienta, Alejandra Vargas-Tah, Karla M López-Ortega, Yessenia N Medina-López, Jorge A Mendoza-Pérez, Sayeny Avila, Seema Singh, Blake A Simmons, Inés Loaces, Alfredo Martinez
Agave bagasse (AGB) has gained recognition as a drought-tolerant biofuel feedstock with high productivity in semiarid regions. A comparative analysis of ionic liquid (IL) and organosolv (OV) pretreatment technologies in AGB was performed using a sequential enzymatic saccharification and fermentation (SESF) strategy with cellulolytic enzymes and the ethanologenic Escherichia coli strain MS04. After pretreatment, 86% of xylan and 45% of lignin were removed from OV-AGB, whereas IL-AGB reduced lignin content by 28% and xylan by 50% when compared to the untreated biomass...
November 16, 2016: Bioresource Technology
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