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Plants (Basel, Switzerland)

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https://www.readbyqxmd.com/read/28106834/heat-stress-decreases-levels-of-nutrient-uptake-and-assimilation-proteins-in-tomato-roots
#1
Anju Giri, Scott Heckathorn, Sasmita Mishra, Charles Krause
Global warming will increase root heat stress, which is already common under certain conditions. Effects of heat stress on root nutrient uptake have rarely been examined in intact plants, but the limited results indicate that heat stress will decrease it; no studies have examined heat-stress effects on the concentration of nutrient-uptake proteins. We grew Solanum lycopersicum (tomato) at 25 °C/20 °C (day/night) and then transferred some plants for six days to 35 °C /30 °C (moderate heat) or 42 °C/37 °C (severe heat) (maximum root temperature = 32 °C or 39 °C, respectively); plants were then moved back to control conditions for seven days to monitor recovery...
January 19, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28085034/acknowledgement-to-reviewers-of-plants-in-2016
#2
EDITORIAL
Plants Editorial Office
The editors of Plants would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2016. [...].
January 11, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28067821/influence-of-nitrogen-availability-on-growth-of-two-transgenic-birch-species-carrying-the-pine-gs1a-gene
#3
Vadim G Lebedev, Nina P Kovalenko, Konstantin A Shestibratov
An alternative way to increase plant productivity through the use of nitrogen fertilizers is to improve the efficiency of nitrogen utilization via genetic engineering. The effects of overexpression of pine glutamine synthetase (GS) gene and nitrogen availability on growth and leaf pigment levels of two Betula species were studied. Untransformed and transgenic plants of downy birch (B. pubescens) and silver birch (B. pendula) were grown under open-air conditions at three nitrogen regimes (0, 1, or 10 mM) for one growing season...
January 6, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28042810/perturbation-analysis-of-calcium-alkalinity-and-secretion-during-growth-of-lily-pollen-tubes
#4
Lawrence J Winship, Caleb Rounds, Peter K Hepler
Pollen tubes grow by spatially and temporally regulated expansion of new material secreted into the cell wall at the tip of the tube. A complex web of interactions among cellular components, ions and small molecule provides dynamic control of localized expansion and secretion. Cross-correlation studies on oscillating lily (Lilium formosanum Wallace) pollen tubes showed that an increase in intracellular calcium follows an increase in growth, whereas the increase in the alkaline band and in secretion both anticipate the increase in growth rate...
December 30, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28036058/cold-tolerance-of-the-male-gametophyte-during-germination-and-tube-growth-depends-on-the-flowering-time
#5
Johanna Wagner, Evelyn Gastl, Martin Kogler, Michaela Scheiber
In temperate climates, most plants flower during the warmer season of the year to avoid negative effects of low temperatures on reproduction. Nevertheless, few species bloom in midwinter and early spring despite severe and frequent frosts at that time. This raises the question of adaption of sensible progamic processes such as pollen germination and pollen tube growth to low temperatures. The performance of the male gametophyte of 12 herbaceous lowland species flowering in different seasons was examined in vitro at different test temperatures using an easy to handle testing system...
December 29, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28025509/a-high-throughput-rna-extraction-for-sprouted-single-seed-barley-hordeum-vulgare-l-rich-in-polysaccharides
#6
Abdur Rashid, Thomas Baldwin, Michael Gines, Phil Bregitzer, Kathy Esvelt Klos
Germinated seed from cereal crops including barley (Hordeum vulgare L.) is an important tissue to extract RNA and analyze expression levels of genes that control aspects of germination. These tissues are rich in polysaccharides and most methods for RNA extraction are not suitable to handle the excess polysaccharides. Here, we compare the current methods for RNA extraction applicable to germinated barley tissue. We found that although some of these standard methods produced high-quality RNA, the process of extraction was drastically slow, mostly because the frozen seed tissue powder from liquid N₂ grinding became recalcitrant to buffer mixing...
December 22, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27973433/variation-among-soybean-cultivars-in-mesophyll-conductance-and-leaf-water-use-efficiency
#7
James Bunce
Improving water use efficiency (WUE) may prove a useful way to adapt crop species to drought. Since the recognition of the importance of mesophyll conductance to CO₂ movement from inside stomatal pores to the sites of photosynthetic carboxylation, there has been interest in how much intraspecific variation in mesophyll conductance (gm) exists, and how such variation may impact leaf WUE within C₃ species. In this study, the gm and leaf WUE of fifteen cultivars of soybeans grown under controlled conditions were measured under standardized environmental conditions...
December 11, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27941603/analysis-of-metabolites-in-stem-parasitic-plant-interactions-interaction-of-cuscuta-momordica-versus-cassytha-ipomoea
#8
Takeshi Furuhashi, Takemichi Nakamura, Koji Iwase
Cuscuta and Cassytha are two well-known stem parasitic plant genera with reduced leaves and roots, inducing haustoria in their stems. Their similar appearance in the field has been recognized, but few comparative studies on their respective plant interactions are available. To compare their interactions, we conducted a metabolite analysis of both the Cassytha-Ipomoea and the Cuscuta-Momordica interaction. We investigated the energy charge of the metabolites by UFLC (ultra-high performance liquid chromatography), and conducted GC-MS (gas chromatography-mass spectrometry) analysis for polar metabolites (e...
December 7, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27929423/plant-responses-to-climate-change-the-case-study-of-betulaceae-and-poaceae-pollen-seasons-northern-italy-vignola-emilia-romagna
#9
Anna Maria Mercuri, Paola Torri, Rita Fornaciari, Assunta Florenzano
Aerobiological data have especially demonstrated that there is correlation between climate warming and the pollination season of plants. This paper focuses on airborne pollen monitoring of Betulaceae and Poaceae, two of the main plant groups with anemophilous pollen and allergenic proprieties in Northern Italy. The aim is to investigate plant responses to temperature variations by considering long-term pollen series. The 15-year aerobiological analysis is reported from the monitoring station of Vignola (located near Modena, in the Emilia-Romagna region) that had operated in the years 1990-2004 with a Hirst spore trap...
December 6, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27916835/synthesis-and-functions-of-jasmonates-in-maize
#10
REVIEW
Eli J Borrego, Michael V Kolomiets
Of the over 600 oxylipins present in all plants, the phytohormone jasmonic acid (JA) remains the best understood in terms of its biosynthesis, function and signaling. Much like their eicosanoid analogues in mammalian system, evidence is growing for the role of the other oxylipins in diverse physiological processes. JA serves as the model plant oxylipin species and regulates defense and development. For several decades, the biology of JA has been characterized in a few dicot species, yet the function of JA in monocots has only recently begun to be elucidated...
November 29, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27754365/an-in-vitro-procedure-for-phenotypic-screening-of-growth-parameters-and-symbiotic-performances-in-lotus-corniculatus-cultivars-maintained-in-different-nutritional-conditions
#11
Vladimir Totev Valkov, Maurizio Chiurazzi
The establishment of legumes crops with phenotypic traits that favour their persistence and competitiveness in mixed swards is a pressing task in sustainable agriculture. However, to fully exploit the potential benefits of introducing pasture-based grass-legume systems, an increased scientific knowledge of legume agronomy for screening of favourable traits is needed. We exploited a short-cut phenotypic screening as a preliminary step to characterize the growth capacity of three different Lotus corniculatus cvs cultivated in different nutritional conditions as well as the evaluation of their nodulation capacities...
October 13, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27735856/understanding-plant-nitrogen-metabolism-through-metabolomics-and-computational-approaches
#12
Perrin H Beatty, Matthias S Klein, Jeffrey J Fischer, Ian A Lewis, Douglas G Muench, Allen G Good
A comprehensive understanding of plant metabolism could provide a direct mechanism for improving nitrogen use efficiency (NUE) in crops. One of the major barriers to achieving this outcome is our poor understanding of the complex metabolic networks, physiological factors, and signaling mechanisms that affect NUE in agricultural settings. However, an exciting collection of computational and experimental approaches has begun to elucidate whole-plant nitrogen usage and provides an avenue for connecting nitrogen-related phenotypes to genes...
October 10, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27618119/interaction-effect-between-elevated-co%C3%A2-and-fertilization-on-biomass-gas-exchange-and-c-n-ratio-of-european-beech-fagus-sylvatica-l
#13
Neda Lotfiomran, Michael Köhl, Jörg Fromm
The effects of elevated CO₂ and interaction effects between elevated CO₂ and nutrient supplies on growth and the C/N ratio of European beech (Fagus sylvatica L.) saplings were studied. One-year-old beech saplings were grown in a greenhouse at ambient (385 ppm) and elevated CO₂ (770 ppm/950 ppm), with or without fertilization for two growing seasons. In this study, emphasis is placed on the combined fertilization including phosphorus, potassium and nitrogen with two level of elevated CO₂. The fertilized plants grown under elevated CO₂ had the highest net leaf photosynthesis rate (Ac)...
September 7, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27618118/structural-properties-of-cruciferin-and-napin-of-brassica-napus-canola-show-distinct-responses-to-changes-in-ph-and-temperature
#14
Suneru P Perera, Tara C McIntosh, Janitha P D Wanasundara
The two major storage proteins identified in Brassica napus (canola) were isolated and studied for their molecular composition, structural characteristics and the responses of structural features to the changes in pH and temperature. Cruciferin, a complex of six monomers, has a predominantly β-sheet-containing secondary structure. This protein showed low pH unstable tertiary structure, and distinctly different solubility behaviour with pH when intact in the seed cellular matrix. Cruciferin structure unfolds at pH 3 even at ambient temperature...
September 7, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27608048/knockdown-of-whirly1-affects-drought-stress-induced-leaf-senescence-and-histone-modifications-of-the-senescence-associated-gene-hvs40
#15
Bianka Janack, Paula Sosoi, Karin Krupinska, Klaus Humbeck
The plastid-nucleus located protein WHIRLY1 has been described as an upstream regulator of leaf senescence, binding to the promoter of senescence-associated genes like HvS40. To investigate the impact of WHIRLY1 on drought stress-induced, premature senescence, transgenic barley plants with an RNAi-mediated knockdown of the HvWHIRLY1 gene were grown under normal and drought stress conditions. The course of leaf senescence in these lines was monitored by physiological parameters and studies on the expression of senescence- and drought stress-related genes...
September 6, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27598219/correction-phosphorylation-affects-dna-binding-of-the-senescence-regulating-bzip-transcription-factor-gbf1-plants-2015-4-691-709
#16
Anja Smykowski, Stefan M Fischer, Ulrike Zentgraf
The authors wish to make the following corrections to their paper [1].[...].
September 1, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27571112/phenylphenalenones-accumulate-in-plant-tissues-of-two-banana-cultivars-in-response-to-herbivory-by-the-banana-weevil-and-banana-stem-weevil
#17
Dirk Hölscher, Andreas Buerkert, Bernd Schneider
Phenylphenalenone-type compounds accumulated in the tissues of two banana cultivars-Musa acuminata cv. "Grande Naine" (AAA) and Musa acuminata × balbisiana Colla cv. "Bluggoe" (ABB)-when these were fed on by the banana weevil (Cosmopolites sordidus (Germ.) (Coleoptera: Curculionidae)) and the banana stem weevil (Odoiporus longicollis (Oliver) (Coleoptera: Curculionidae)). The chemical constituents of the banana material were separated by means of chromatographic techniques and identified by NMR spectroscopy...
August 25, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27529286/the-role-of-flavonoids-in-nodulation-host-range-specificity-an-update
#18
REVIEW
Cheng-Wu Liu, Jeremy D Murray
Flavonoids are crucial signaling molecules in the symbiosis between legumes and their nitrogen-fixing symbionts, the rhizobia. The primary function of flavonoids in the interaction is to induce transcription of the genes for biosynthesis of the rhizobial signaling molecules called Nod factors, which are perceived by the plant to allow symbiotic infection of the root. Many legumes produce specific flavonoids that only induce Nod factor production in homologous rhizobia, and therefore act as important determinants of host range...
August 11, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27527233/evaluating-the-role-of-seed-treatments-in-canola-oilseed-rape-production-integrated-pest-management-pollinator-health-and-biodiversity
#19
Gregory Sekulic, Curtis B Rempel
The use patterns and role of insecticide seed treatments, with focus on neonicotinoid insecticides, were examined for canola/oilseed rape production in Canada and the EU. Since nearly all planted canola acres in Western Canada and, historically, a majority of planted oilseed acres in the EU, use seed treatments, it is worth examining whether broad use of insecticidal seed treatments (IST) is compatible with principles of integrated pest management (IPM). The neonicotinoid insecticide (NNI) seed treatment (NNI ST) use pattern has risen due to effective control of several early season insect pests, the most destructive being flea beetles (Phyllotreta sp...
August 3, 2016: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27447676/blackleg-leptosphaeria-maculans-severity-and-yield-loss-in-canola-in-alberta-canada
#20
Sheau-Fang Hwang, Stephen E Strelkov, Gary Peng, Hafiz Ahmed, Qixing Zhou, George Turnbull
Blackleg, caused by Leptosphaeria maculans, is an important disease of oilseed rape (Brassica napus L.) in Canada and throughout the world. Severe epidemics of blackleg can result in significant yield losses. Understanding disease-yield relationships is a prerequisite for measuring the agronomic efficacy and economic benefits of control methods. Field experiments were conducted in 2013, 2014, and 2015 to determine the relationship between blackleg disease severity and yield in a susceptible cultivar and in moderately resistant to resistant canola hybrids...
July 20, 2016: Plants (Basel, Switzerland)
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