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https://www.readbyqxmd.com/read/28733885/a-simple-and-rapid-in-vitro-test-for-large-scale-screening-of-fungal-endophytes-from-drought-adapted-australian-wild-plants-for-conferring-water-deprivation-tolerance-and-growth-promotion-in-nicotiana-benthamiana-seedlings
#1
Khondoker M G Dastogeer, Hua Li, Krishnapillai Sivasithamparam, Michael G K Jones, Stephen J Wylie
Some fungal endophytes confer novel phenotypes and enhance existing ones in plants, including tolerance to water deprivation stress. A range of fungal endophytes was isolated from wild Nicotiana plants growing in arid parts of northern Australia. These were screened for ability to enhance water deprivation stress tolerance by inoculating seedlings of the model plant N. benthamiana in two in vitro tests. Sixty-eight endophyte isolates were co-cultivated with N. benthamiana seedlings on either damp filter paper or on agar medium before being subjected to water deprivation...
July 21, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28733104/comparative-shoot-proteome-analysis-of-two-potato-solanum-tuberosum-l-genotypes-contrasting-in-nitrogen-deficiency-responses-in-vitro
#2
Philipp Meise, Anna Maria Jozefowicz, Ralf Uptmoor, Hans-Peter Mock, Frank Ordon, Annegret Schum
Aiming at a better understanding of the physiological and biochemical background of nitrogen use efficiency, alterations in the shoot proteome under N-deficiency were investigated in two contrasting potato genotypes grown in vitro with 60 and 7.5mM N, respectively. A gel based proteomic approach was applied to identify candidate proteins associated with genotype specific responses to N-deficiency. 21% of the detected proteins differed in abundance between the two genotypes. Between control and N-deficiency conditions 19...
July 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28713405/vegetable-grafting-as-a-tool-to-improve-drought-resistance-and-water-use-efficiency
#3
REVIEW
Pradeep Kumar, Youssef Rouphael, Mariateresa Cardarelli, Giuseppe Colla
Drought is one of the most prevalent limiting factors causing considerable losses in crop productivity, inflicting economic as well as nutritional insecurity. One of the greatest challenges faced by the scientific community in the next few years is to minimize the yield losses caused by drought. Drought resistance is a complex quantitative trait controlled by many genes. Thus, introgression of drought resistance traits into high yielding genotypes has been a challenge to plant breeders. Vegetable grafting using rootstocks has emerged as a rapid tool in tailoring plants to better adapt to suboptimal growing conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28712076/nickel-stressed-responses-of-rice-in-ni-subcellular-distribution-antioxidant-production-and-osmolyte-accumulation
#4
Muhammad Rizwan, Muhammad Imtiaz, Zhihua Dai, Sajid Mehmood, Muhammad Adeel, Jinchang Liu, Shuxin Tu
Nickel has been found a key pollutant in farmlands of central and south China, and understanding of Ni toxicity in rice is of great significance in safety production of rice and remediation of Ni polluted paddy soils. The present study aimed to investigate the uptake and subcellular distribution of Ni, antioxidant production, and osmolyte accumulation of rice (Oryza sativa L., cv. yangliangyou 6) plants exposed to excessive Ni concentrations to gain an insight into Ni-induced phytotoxicity. Results revealed that exposure of rice seedlings to high Ni concentrations resulted a decline in root and shoot lengths and fresh weight (FW) and dry weight (DW) of rice plants, which are in connection with the depletion of the contents of photosynthetic pigments...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28708264/redox-regulation-at-the-site-of-primary-growth-auxin-cytokinin-and-ros-crosstalk
#5
REVIEW
Vanesa B Tognetti, Agnieszka Bielach, Mónika Hrtyan
To maintain the activity of meristems is an absolute requirement for plant growth and development, and the role of the plant hormones auxin and cytokinin in apical meristem function is well established. Only little attention has been given, however, to the function of the reactive oxygen species (ROS) gradient along meristematic tissues and its interplay with hormonal regulatory networks. The interdependency between auxin-, cytokinin-, and ROS-related circuits controls primary growth and development while modulating plant morphology in response to detrimental environmental factors...
July 14, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28694816/physiological-and-transcriptional-changes-of-three-citrus-rootstock-seedlings-under-iron-deficiency
#6
Lina Fu, Qingqing Zhu, Yinya Sun, Wei Du, Zhiyong Pan, Shu'ang Peng
Iron is an essential micronutrient for plants, and plants have evolved adaptive mechanisms to improve iron acquisition from soils. Grafting on iron deficiency-tolerant rootstock is an effective strategy to prevent iron deficiency-chlorosis in fruit-tree crops. To determine the mechanisms underlying iron uptake in iron deficiency, two iron deficiency-tolerant citrus rootstocks, Zhique (ZQ) and Xiangcheng (XC), as well as iron deficiency-sensitive rootstock trifoliate orange (TO) seedlings were studied. Plants were grown in hydroponics system for 100 days, having 50 μM iron (control) and 0 μM iron (iron deficiency) nutrient solution...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28678208/variation-in-yield-responses-to-elevated-co%C3%A2-and-a-brief-high-temperature-treatment-in-quinoa
#7
James A Bunce
Intraspecific variation in crop responses to global climate change conditions would provide opportunities to adapt crops to future climates. These experiments explored intraspecific variation in response to elevated CO₂ and to high temperature during anthesis in Chenopodium quinoa Wild. Three cultivars of quinoa were grown to maturity at 400 ("ambient") and 600 ("elevated") μmol·mol(-1) CO₂ concentrations at 20/14 °C day/night ("control") temperatures, with or without exposure to day/night temperatures of 35/29 °C ("high" temperatures) for seven days during anthesis...
July 5, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28670755/production-of-low-cs-rice-plants-by-inactivation-of-the-k-transporter-oshak1-with-the-crispr-cas-system
#8
Manuel Nieves-Cordones, Sonia Mohamed, Keitaro Tanoi, Natsuko I Kobayashi, Keiko Takagi, Aurore Vernet, Emmanuel Guiderdoni, Christophe Périn, Hervé Sentenac, Anne-Aliénor Véry
Occurrence of radiocesium in food has raised sharp health concerns after nuclear accidents. Despite being present at low concentrations in contaminated soils (below μM), cesium (Cs(+) ) can be taken up by crops and transported to their edible parts. Such a plant capacity to take up Cs(+) from low concentrations has notably affected the production of rice (Oryza sativa L.) in Japan after the nuclear accident at Fukushima in 2011. Several strategies have been put into practice to reduce Cs(+) content in this crop species, such as contaminated soil removal or adaptation of agricultural practices, including dedicated fertilizer management, with limited impact or pernicious side effects...
July 3, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28656685/impacts-of-lung-and-tumor-volumes-on-lung-dosimetry-for-nonsmall-cell-lung-cancer
#9
Weijie Lei, Jing Jia, Ruifen Cao, Jing Song, Liqin Hu
The purpose of this study was to determine the impacts of lung and tumor volumes on normal lung dosimetry in three-dimensional conformal radiotherapy (3DCRT), step-and-shoot intensity-modulated radiotherapy (ssIMRT), and single full-arc volumetric-modulated arc therapy (VMAT) in treatment of nonsmall cell lung cancers (NSCLC). All plans were designed to deliver a total dose of 66 Gy in 33 fractions to PTV for the 32 NSCLC patients with various total (bilateral) lung volumes, planning target volumes (PTVs), and PTV locations...
June 28, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28653222/anatomical-responses-of-leaf-and-stem-of-arabidopsis-thaliana-to-nitrogen-and-phosphorus-addition
#10
Qiong Cai, Chengjun Ji, Zhengbing Yan, Xingxing Jiang, Jingyun Fang
Nitrogen (N) and phosphorus (P) availabilities play crucial roles in plant morphogenesis and physiological processes, but how plant anatomical traits respond to the N and P supply is not well elucidated. We evaluated the effects of N and P supply on multiple leaf and stem anatomical traits of Arabidopsis thaliana. The addition of N increased the stem diameter, cortex thickness, rosette radius, midrib thickness, and size of leaf and stem vasculature significantly. Abaxial stomatal length (LSL) increased while adaxial epidermal cell density decreased significantly with increasing N supply...
June 26, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28649360/competitive-success-of-southern-populations-of-betula-pendula-and-sorbus-aucuparia-under-simulated-southern-climate-experiment-in-the-subarctic
#11
Kari Taulavuori, Erja Taulavuori, Karita Saravesi, Tanja Jylänki, Aila Kainulainen, Jonna Pajala, Annamari Markkola, Otso Suominen, Kari Saikkonen
Global warming has been commonly accepted to facilitate species' range shifts across latitudes. Cross-latitudinal transplantations support this; many tree species can well adapt to new geographical areas. However, these studies fail to capture species' adaptations to new light environment because the experiments were not designed to explicitly separate species' responses to light and temperature. Here we tested reaction norms of tree seedlings in reciprocal transplantations 1,000 km apart from each other at two latitudes (60°N and 69°N)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28642763/rootstock-sub-optimal-temperature-tolerance-determines-transcriptomic-responses-after-long-term-root-cooling-in-rootstocks-and-scions-of-grafted-tomato-plants
#12
Georgia Ntatsi, Dimitrios Savvas, Vassilis Papasotiropoulos, Anastasios Katsileros, Rita M Zrenner, Dirk K Hincha, Ellen Zuther, Dietmar Schwarz
Grafting of elite cultivars onto tolerant rootstocks is an advanced strategy to increase tomato tolerance to sub-optimal temperature. However, a detailed understanding of adaptive mechanisms to sub-optimal temperature in rootstocks and scions of grafting combinations on a physiological and molecular level is lacking. Here, the commercial cultivar Kommeet was grafted either onto 'Moneymaker' (sensitive) or onto the line accession LA 1777 of Solanum habrochaites (tolerant). Grafted plants were grown in NFT-system at either optimal (25°C) or sub-optimal (15°C) temperatures in the root environment with optimal air temperature (25°C) for 22 days...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28633427/genotypic-variation-in-tolerance-to-drought-stress-is-highly-coordinated-with-hydraulic-conductivity-photosynthesis-interplay-and-aquaporin-expression-in-field-grown-mulberry-morus-spp
#13
Kanubothula Sitarami Reddy, Kalva Madhana Sekhar, Attipalli Ramachandra Reddy
Hydraulic conductivity quantifies the efficiency of a plant to transport water from root to shoot and is a major constriction on leaf gas exchange physiology. Mulberry (Morus spp.) is the most economically important crop for sericulture industry. In this study, we demonstrate a finely coordinated control of hydraulic dynamics on leaf gas exchange characteristics in 1-year-old field-grown mulberry genotypes (Selection-13 (S13); Kollegal Local (KL) and Kanva-2 (K2)) subjected to water stress by withholding water for 20 days and subsequent recovery for 7 days...
June 14, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28624683/drought-responsive-micrornas-in-two-barley-cultivars-differing-in-their-level-of-sensitivity-to-drought-stress
#14
Ehsan Mohseni Fard, Behnam Bakhshi, Reza Keshavarznia, Nava Nikpay, Maryam Shahbazi, Ghasem Hosseini Salekdeh
MicroRNAs (miRNAs) are known to be involved in the regulation of gene expression, including that of genes involved in the response to stress. Here, a comparison has been drawn between the miRNA profiles of a drought susceptible, 'Morocco 9-75', and a drought tolerant, 'Yousef', barley cultivars. Leaf water content, shoot dry matter and chlorophyll content decreased in 'Morocco 9-75' more considerably compared with 'Yousef' under drought stress. Furthermore, lower stomatal conductance and higher leaf temperature were observed in 'Morocco 9-75' compared with 'Yousef'...
June 7, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28624682/effect-of-the-fungus-piriformospora-indica-on-physiological-characteristics-and-root-morphology-of-wheat-under-combined-drought-and-mechanical-stresses
#15
Fatemeh Hosseini, Mohammad Reza Mosaddeghi, Anthony Roger Dexter
This study was done to evaluate the effects of the root-colonizing endophytic fungus Piriformospora indica on wheat growth under combined drought and mechanical stresses. Inoculated (colonized) and non-inoculated (uncolonized) wheat (Triticum aestivum L. cv. Chamran) seedlings were planted in growth chambers filled with moist sand (at a matric suction of 20 hPa). Slight, moderate and severe mechanical stresses (i.e., penetration resistance, Qp, of 1.17, 4.17 and 5.96 MPa, respectively) were produced by a dead-load technique (i...
June 7, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28611799/endophytic-paecilomyces-formosus-lhl10-augments-glycine-max-l-adaptation-to-ni-contamination-through-affecting-endogenous-phytohormones-and-oxidative-stress
#16
Saqib Bilal, Abdul L Khan, Raheem Shahzad, Sajjad Asaf, Sang-Mo Kang, In-Jung Lee
This study investigated the Ni-removal efficiency of phytohormone-producing endophytic fungi Penicillium janthinellum, Paecilomyces formosus, Exophiala sp., and Preussia sp. Among four different endophytes, P. formosus LHL10 was able to tolerate up to 1 mM Ni in contaminated media as compared to copper and cadmium. P. formosus LHL10 was further assessed for its potential to enhance the phytoremediation of Glycine max (soybean) in response to dose-dependent increases in soil Ni (0.5, 1.0, and 5.0 mM). Inoculation with P...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28606179/modifying-upper-limb-inter-joint-coordination-in-healthy-subjects-by-training-with-a-robotic-exoskeleton
#17
Tommaso Proietti, Emmanuel Guigon, Agnès Roby-Brami, Nathanaël Jarrassé
BACKGROUND: The possibility to modify the usually pathological patterns of coordination of the upper-limb in stroke survivors remains a central issue and an open question for neurorehabilitation. Despite robot-led physical training could potentially improve the motor recovery of hemiparetic patients, most of the state-of-the-art studies addressing motor control learning, with artificial virtual force fields, only focused on the end-effector kinematic adaptation, by using planar devices...
June 12, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28603510/how-do-soccer-players-adjust-their-activity-in-team-coordination-an-enactive-phenomenological-analysis
#18
Vincent Gesbert, Annick Durny, Denis Hauw
This study examined how individual team members adjust their activity to the needs for collective behavior. To do so, we used an enactive phenomenological approach and explored how soccer players' lived experiences were linked to the active regulation of team coordination during eight offensive transition situations. These situations were defined by the shift from defensive to offensive play following a change in ball possession. We collected phenomenological data, which were processed in four steps. First, we reconstructed the diachronic and synchronic dynamics of the players' lived experiences across these situations in order to identify the units of their activity...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28600722/genetic-dissection-of-plant-growth-habit-in-chickpea
#19
Hari D Upadhyaya, Deepak Bajaj, Rishi Srivastava, Anurag Daware, Udita Basu, Shailesh Tripathi, Chellapilla Bharadwaj, Akhilesh K Tyagi, Swarup K Parida
A combinatorial genomics-assisted breeding strategy encompassing association analysis, genetic mapping and expression profiling is found most promising for quantitative dissection of complex traits in crop plants. The present study employed GWAS (genome-wide association study) using 24,405 SNPs (single nucleotide polymorphisms) obtained with genotyping-by-sequencing (GBS) of 92 sequenced desi and kabuli accessions of chickpea. This identified eight significant genomic loci associated with erect (E)/semi-erect (SE) vs...
June 9, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28600346/genetic-control-of-plasticity-in-root-morphology-and-anatomy-of-rice-in-response-to-water-deficit
#20
Niteen Kadam, Anandhan Tamilselvan, Lovely Mae F Lawas, Cherryl Quinones, Rajeev Bahuguna, Michael J Thomson, Michael Dingkuhn, Raveendran Muthurajan, Paul Struik, Xinyou Yin, Krishna Jagadish
Elucidating the genetic control of rooting behaviour under water-deficit stress is essential to breed climate-robust rice cultivars. Using a diverse panel of 274 indica genotypes grown under control and water-deficit conditions during vegetative growth, we phenotyped 35 traits, mostly related to root morphology and anatomy, involving ~45,000 root scanning images and nearly ~25,000 cross-sections from the root-shoot junction. Phenotypic plasticity of these traits was quantified as the relative change in trait value under water-deficit compared to control conditions...
June 9, 2017: Plant Physiology
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