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Plants (Basel, Switzerland)

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https://www.readbyqxmd.com/read/28805707/integrating-soil-silicon-amendment-into-management-programs-for-insect-pests-of-drill-seeded-rice
#1
James M Villegas, Michael O Way, Rebecca A Pearson, Michael J Stout
Silicon soil amendment has been shown to enhance plant defenses against insect pests. Rice is a silicon-accumulating graminaceous plant. In the southern United States, the rice water weevil and stem borers are important pests of rice. Current management tactics for these pests rely heavily on the use of insecticides. This study evaluated the effects of silicon amendment when combined with current management tactics for these rice insect pests in the field. Field experiments were conducted from 2013 to 2015...
August 13, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28792470/differential-mechanisms-of-photosynthetic-acclimation-to-light-and-low-temperature-in-arabidopsis-and-the-extremophile-eutrema-salsugineum
#2
Nityananda Khanal, Geoffrey E Bray, Anna Grisnich, Barbara A Moffatt, Gordon R Gray
Photosynthetic organisms are able to sense energy imbalances brought about by the overexcitation of photosystem II (PSII) through the redox state of the photosynthetic electron transport chain, estimated as the chlorophyll fluorescence parameter 1-qL, also known as PSII excitation pressure. Plants employ a wide array of photoprotective processes that modulate photosynthesis to correct these energy imbalances. Low temperature and light are well established in their ability to modulate PSII excitation pressure...
August 9, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28757594/high-constitutive-overexpression-of-glycosyl-hydrolase-family-17-delays-floral-transition-by-enhancing-flc-expression-in-transgenic-arabidopsis
#3
Shinichi Enoki, Nozomi Fujimori, Chiho Yamaguchi, Tomoki Hattori, Shunji Suzuki
Vitis vinifera glycosyl hydrolase family 17 (VvGHF17) is a grape apoplasmic β-1,3-glucanase, which belongs to glycosyl hydrolase family 17 in grapevines. β-1,3-glucanase is not only involved in plant defense response but also has various physiological functions in plants. Although VvGHF17 expression is negatively related to the length of inflorescence in grapevines, the physiological functions of VvGHF17 are still uncertain. To clarify the physiological functions of VvGHF17, we conducted a phenotypic analysis of VvGHF17-overexpressing Arabidopsis plants...
July 25, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28704944/sphenostylis-stenocarpa-ex-a-rich-harms-a-fading-genetic-resource-in-a-changing-climate-prerequisite-for-conservation-and-sustainability
#4
Catherine Veronica Nnamani, Sunday Adesola Ajayi, Happiness Ogba Oselebe, Christopher John Atkinson, Anastasia Ngozi Igboabuchi, Eucharia Chizoba Ezigbo
The southeastern part of Nigeria is one of the major hotspots of useful plant genetic resources. These endemic species are associated with a rich indigenous knowledge and cultural diversity in relation to their use and conservation. Sphenostylis stenocarpa (ex. A. Rich.) Harms., (African Yam Bean (AYB)), is one such crop within the family of Fabaceae. Its nutritional and eco-friendly characteristics have value in ameliorating malnutrition, hidden hunger and environmental degradation inherent in resource-poor rural and semi-rural communities throughout Africa...
July 12, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28696383/alfalfa-responses-to-gypsum-application-measured-using-undisturbed-soil-columns
#5
Rebecca Tirado-Corbalá, Brian K Slater, Warren A Dick, Dave Barker
Gypsum is an excellent source of Ca and S, both of which are required for crop growth. Large amounts of by-product gypsum [Flue gas desulfurization gypsum-(FGDG)] are produced from coal combustion in the United States, but only 4% is used for agricultural purposes. The objective of this study was to evaluate the effects of (1) untreated, (2) short-term (4-year annual applications of gypsum totaling 6720 kg ha(-1)), and (3) long-term (12-year annual applications of gypsum totaling 20,200 kg ha(-1)) on alfalfa (Medicago sativa L...
July 11, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28698520/the-polyketide-components-of-waxes-and-the-cer-cqu-gene-cluster-encoding-a-novel-polyketide-synthase-the-%C3%AE-diketone-synthase-dks
#6
REVIEW
Penny von Wettstein-Knowles
The primary function of the outermost, lipophilic layer of plant aerial surfaces, called the cuticle, is preventing non-stomatal water loss. Its exterior surface is often decorated with wax crystals, imparting a blue-grey color. Identification of the barley Cer-c, -q and -u genes forming the 101 kb Cer-cqu gene cluster encoding a novel polyketide synthase-the β-diketone synthase (DKS), a lipase/carboxyl transferase, and a P450 hydroxylase, respectively, establishes a new, major pathway for the synthesis of plant waxes...
July 10, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28686187/cuticular-waxes-of-arabidopsis-thaliana-shoots-cell-type-specific-composition-and-biosynthesis
#7
REVIEW
Daniela Hegebarth, Reinhard Jetter
It is generally assumed that all plant epidermis cells are covered with cuticles, and the distinct surface geometries of pavement cells, guard cells, and trichomes imply functional differences and possibly different wax compositions. However, experiments probing cell-type-specific wax compositions and biosynthesis have been lacking until recently. This review summarizes new evidence showing that Arabidopsis trichomes have fewer wax compound classes than pavement cells, and higher amounts of especially long-chain hydrocarbons...
July 7, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28678208/variation-in-yield-responses-to-elevated-co%C3%A2-and-a-brief-high-temperature-treatment-in-quinoa
#8
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/28665304/occurrence-and-biosynthesis-of-alkyl-hydroxycinnamates-in-plant-lipid-barriers
#9
REVIEW
Frédéric Domergue, Dylan K Kosma
The plant lipid barriers cuticle and suberin represent one of the largest biological interfaces on the planet. They are comprised of an insoluble polymeric domain with associated organic solvent-soluble waxes. Suberin-associated and plant cuticular waxes contain mixtures of aliphatic components that may include alkyl hydroxycinnamates (AHCs). The canonical alkyl hydroxycinnamates are comprised of phenylpropanoids, typically coumaric, ferulic, or caffeic acids, esterified with long chain to very long chain fatty alcohols...
June 30, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28608805/comparative-phenotypical-and-molecular-analyses-of-arabidopsis-grown-under-fluorescent-and-led-light
#10
Franka Seiler, Jürgen Soll, Bettina Bölter
Comparative analyses of phenotypic and molecular traits of Arabidopsis thaliana grown under standardised conditions is still a challenge using climatic devices supplied with common light sources. These are in most cases fluorescent lights, which have several disadvantages such as heat production at higher light intensities, an invariable spectral output, and relatively rapid "ageing". This results in non-desired variations of growth conditions and lowers the comparability of data acquired over extended time periods...
June 13, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28608803/the-unique-role-of-the-eceriferum2-like-clade-of-the-bahd-acyltransferase-superfamily-in-cuticular-wax-metabolism
#11
REVIEW
Tegan M Haslam, Wesley K Gerelle, Sean W Graham, Ljerka Kunst
The elongation of very-long-chain fatty acids is a conserved process used for the production of many metabolites, including plant cuticular waxes. The elongation of precursors of the most abundant cuticular wax components of some plants, however, is unique in requiring ECERIFERUM2-LIKE (CER2-LIKE) proteins. CER2-LIKEs are a clade within the BAHD superfamily of acyltransferases. They are known to be required for cuticular wax production in both Arabidopsis and maize based on mutant studies. Heterologous expression of Arabidopsis and rice CER2-LIKEs in Saccharomyces cerevisiae has demonstrated that they modify the chain-length specificity of elongation when paired with particular condensing enzymes...
June 13, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28555003/flowering-locus-t-triggers-early-and-fertile-flowering-in-glasshouse-cassava-manihot-esculenta-crantz
#12
Simon E Bull, Adrian Alder, Cristina Barsan, Mathias Kohler, Lars Hennig, Wilhelm Gruissem, Hervé Vanderschuren
Accelerated breeding of plant species has the potential to help challenge environmental and biochemical cues to support global crop security. We demonstrate the over-expression of ArabidopsisFLOWERING LOCUS T in Agrobacterium-mediated transformed cassava (Manihot esculenta Crantz; cultivar 60444) to trigger early flowering in glasshouse-grown plants. An event seldom seen in a glasshouse environment, precocious flowering and mature inflorescence were obtained within 4-5 months from planting of stem cuttings...
May 27, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28587097/metabolomic-profiling-of-soybeans-glycine-max-l-reveals-the-importance-of-sugar-and-nitrogen-metabolism-under-drought-and-heat-stress
#13
Aayudh Das, Paul J Rushton, Jai S Rohila
Soybean is an important crop that is continually threatened by abiotic stresses, especially drought and heat stress. At molecular levels, reduced yields due to drought and heat stress can be seen as a result of alterations in metabolic homeostasis of vegetative tissues. At present an incomplete understanding of abiotic stress-associated metabolism and identification of associated metabolites remains a major gap in soybean stress research. A study with a goal to profile leaf metabolites under control conditions (28/24 °C), drought [28/24 °C, 10% volumetric water content (VWC)], and heat stress (43/35 °C) was conducted in a controlled environment...
May 25, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28505096/attenuation-of-drought-stress-in-brassica-seedlings-with-exogenous-application-of-ca-2-and-h%C3%A2-o%C3%A2
#14
Akram Khan, Yasir Anwar, Md Mahadi Hasan, Aqib Iqbal, Muhammad Ali, Hesham F Alharby, Khalid Rehman Hakeem, Mirza Hasanuzzaman
Drought is one of the most common abiotic stresses, affecting the growth and productivity of crop plants globally, particularly in arid and semi-arid regions. Different strategies are used to mitigate the impact of drought among crop plants. Exogenous application of different substances are known to decrease the effects of various abiotic stresses, including drought stress. The aim of this study was to evaluate the effect of Ca(2+) and H₂O₂ in developing drought stress tolerance in Brassica napus "Bulbul-98" seedlings...
May 13, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28498334/pastoralism-versus-agriculturalism-how-do-altered-land-use-forms-affect-the-spread-of-invasive-plants-in-the-degraded-mutara-rangelands-of-north-eastern-rwanda
#15
Torsten Wronski, Jean Damascene Bariyanga, Ping Sun, Martin Plath, Ann Apio
Lantana camara L. (Verbenaceae) originates from tropical Central and South America and has become invasive in about 50 countries. It causes problems when invading rangelands due to its toxicity to livestock and its tendency to form dense, monotonous thickets. Its invasiveness can partly be explained by the high tannin content largely protecting the species from being browsed, its tolerance to a wide range of environmental conditions, as well as its general preference for anthropogenically disturbed habitats...
May 12, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28489041/effect-of-gamma-irradiation-on-2-acetyl-1-pyrroline-content-gaba-content-and-volatile-compounds-of-germinated-rice-thai-upland-rice
#16
Sompong Sansenya, Yanling Hua, Saowapa Chumanee, Kannika Phasai, Chanun Sricheewin
Aroma intensity in rice is related to the level of 2-acetyl-1-pyrroline (2AP). The accumulation of 2AP in rice has been synthesized via l-proline metabolism by inactive betaine aldehyde dehydrogenase enzyme (BADH2), which activates 2AP accumulation. Meanwhile, active BADH2 inhibits 2AP accumulation but activates γ-aminobutyric acid (GABA) accumulation. The improvement of 2AP content in rice has been reported under certain conditions, such as high salinity, water treatment, and reduction of high intensity solar exposure...
May 10, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28441780/pollen-grain-preservation-and-fertility-in-valuable-commercial-rose-cultivars
#17
Annalisa Giovannini, Anca Macovei, Matteo Caser, Andrea Mansuino, Gian Guido Ghione, Marco Savona, Daniela Carbonera, Valentina Scariot, Alma Balestrazzi
In the cut flower market, traditional breeding is still the best way to achieve new rose cultivars. The geographical delocalization of cultivar constitution (generally made in Europe and North America) and plant cultivation (large areas in Africa and South America) represents a limit point for crossing and selection. Rose breeders often need to overcome geographical distances, resulting in asynchrony in flowering among crossing parents, by storing and sending pollen. Hence, a key aspect in breeding programs is linked to pollen availability and conservation, jointly with the identification of parameters related to pollen fertility...
April 24, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28394295/antimicrobial-resistance-and-the-alternative-resources-with-special-emphasis-on-plant-based-antimicrobials-a-review
#18
REVIEW
Harish Chandra, Parul Bishnoi, Archana Yadav, Babita Patni, Abhay Prakash Mishra, Anant Ram Nautiyal
Indiscriminate and irrational use of antibiotics has created an unprecedented challenge for human civilization due to microbe's development of antimicrobial resistance. It is difficult to treat bacterial infection due to bacteria's ability to develop resistance against antimicrobial agents. Antimicrobial agents are categorized according to their mechanism of action, i.e., interference with cell wall synthesis, DNA and RNA synthesis, lysis of the bacterial membrane, inhibition of protein synthesis, inhibition of metabolic pathways, etc...
April 10, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28368351/lipid-raft-regulator-of-plasmodesmal-callose-homeostasis
#19
REVIEW
Arya Bagus Boedi Iswanto, Jae-Yean Kim
Abstract: The specialized plasma membrane microdomains known as lipid rafts are enriched by sterols and sphingolipids. Lipid rafts facilitate cellular signal transduction by controlling the assembly of signaling molecules and membrane protein trafficking. Another specialized compartment of plant cells, the plasmodesmata (PD), which regulates the symplasmic intercellular movement of certain molecules between adjacent cells, also contains a phospholipid bilayer membrane. The dynamic permeability of plasmodesmata (PDs) is highly controlled by plasmodesmata callose (PDC), which is synthesized by callose synthases (CalS) and degraded by β-1,3-glucanases (BGs)...
April 3, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28273829/combined-effects-of-ozone-and-drought-on-the-physiology-and-membrane-lipids-of-two-cowpea-vigna-unguiculata-l-walp-cultivars
#20
Deborah Moura Rebouças, Yuri Maia De Sousa, Matthieu Bagard, Jose Helio Costa, Yves Jolivet, Dirce Fernandes De Melo, Anne Repellin
The interactive effects of drought and ozone on the physiology and leaf membrane lipid content, composition and metabolism of cowpea (Vigna unguiculata (L.) Walp.) were investigated in two cultivars (EPACE-1 and IT83-D) grown under controlled conditions. The drought treatment (three-week water deprivation) did not cause leaf injury but restricted growth through stomatal closure. In contrast, the short-term ozone treatment (130 ppb 12 h daily during 14 day) had a limited impact at the whole-plant level but caused leaf injury, hydrogen peroxide accumulation and galactolipid degradation...
March 3, 2017: Plants (Basel, Switzerland)
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