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Plant Physiology and Biochemistry: PPB

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https://www.readbyqxmd.com/read/27915175/distinct-cold-responsiveness-of-a-stinvinh2-gene-promoter-in-transgenic-potato-tubers-with-contrasting-resistance-to-cold-induced-sweetening
#1
Xun Liu, Weiling Shi, Wang Yin, Jichun Wang
Potato (Solanum tuberosum L.) vacuolar invertase (β-fructofuranosidase; EC 3.2.1.26) inhibitor 2 (StInvInh2) plays an important role in cold-induced sweetening (CIS) of potato tubers. The transcript levels of StInvInh2 were increased by prolonged cold in potato tubers with CIS-resistance but decreased in potato tubers with CIS-sensitivity. However, the transcript regulation mechanisms of StInvInh2 responding to prolonged cold are largely unclear in CIS-resistant and CIS-sensitive genotypes. In the present study, the 5'-flanking sequence of the StInvInh2 was cloned, and cis-acting elements were predicted...
November 29, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27915173/effect-of-prolonged-water-stress-on-essential-oil-content-compositions-and-gene-expression-patterns-of-mono-and-sesquiterpene-synthesis-in-two-oregano-origanum-vulgare-l-subspecies
#2
Mohammad Reza Morshedloo, Lyle E Craker, Alireza Salami, Vahideh Nazeri, Hyunkyu Sang, Filippo Maggi
Origanum vulgare L., recognized throughout the world as a popular medicinal and flavoring herb, contains a wide array of medicinally active components, including phenolic glucosides, flavonoids, tannins, sterols and high amounts of terpenoids. Especially the latter are often extracted by hydrodistillation resulting in the so-called essential oil that is rich in monoterpenes (e.g. carvacrol, thymol, linalyl acetate) and/or sesquiterpenes (e.g. (E)-β-caryophyllene, germacrene D, bicyclogermacrene, β-caryophyllene oxide)...
November 28, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27915172/dark-chilling-induces-substantial-structural-changes-and-modifies-galactolipid-and-carotenoid-composition-during-chloroplast-biogenesis-in-cucumber-cucumis-sativus-l-cotyledons
#3
Joanna Skupień, Joanna Wójtowicz, Łucja Kowalewska, Radosław Mazur, Maciej Garstka, Katarzyna Gieczewska, Agnieszka Mostowska
Plants in a temperate climate are often subject to different environmental factors, chilling stress among them, which influence the growth especially during early stages of plant development. Chloroplasts are one of the first organelles affected by the chilling stress. Therefore the proper biogenesis of chloroplasts in early stages of plant growth is crucial for undertaking the photosynthetic activity. In this paper, the analysis of the cotyledon chloroplast biogenesis at different levels of plastid organization was performed in cucumber, one of the most popular chilling sensitive crops...
November 28, 2016: Plant Physiology and Biochemistry: PPB
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
#4
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/27914321/functional-regulation-of-ginsenoside-biosynthesis-by-rna-interferences-of-a-udp-glycosyltransferase-gene-in-panax-ginseng-and-panax-quinquefolius
#5
Chao Lu, Shoujing Zhao, Guanning Wei, Huijuan Zhao, Qingling Qu
Panax ginseng (Asian ginseng) and Panax quinquefolius (American ginseng) have been used as medicinal and functional herbal remedies worldwide. Different properties of P. ginseng and P. quinquefolius were confirmed not only in clinical findings, but also at cellular and molecular levels. The major pharmacological ingredients of P. ginseng and P. quinquefolius are the triterpene saponins known as ginsenosides. The P. ginseng roots contain a higher ratio of ginsenoside Rg1:Rb1 than that in P. quinquefolius...
November 25, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27914320/biochemical-precursor-effects-on-the-fatty-acid-production-in-cell-suspension-cultures-of-theobroma-cacao-l
#6
O Parra, A M Gallego, A Urrea, L F Rojas, C Correa, L Atehortúa
Cocoa butter (CB) is composed of 96% palmitic, stearic, oleic, linoleic and linolenic fatty acids that are responsible for the hardness, texture and fusion properties of chocolate. Through in vitro plant cell culture it is possible to modify CB lipid profiles and to study the fatty acid biosynthesis pathway on a subcellular level, evaluating fundamental aspects to enhance in vitro fatty acid production in a specific and controlled way. In this research, culture media was supplemented with acetate, biotin, pyruvate, bicarbonate and glycerol at three different concentrations and the effects on the biomass production (g/L), cell viability, and fatty acids profile and production was evaluated in in vitro cell suspensions culture...
November 25, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27915176/mining-identification-and-function-analysis-of-micrornas-and-target-genes-in-peanut-arachis-hypogaea-l
#7
Tingting Zhang, Shuhao Hu, Caixia Yan, Chunjuan Li, Xiaobo Zhao, Shubo Wan, Shihua Shan
In the present investigation, a total of 60 conserved peanut (Arachis hypogaea L.) microRNA (miRNA) sequences, belonging to 16 families, were identified using bioinformatics methods. There were 392 target gene sequences, identified from 58 miRNAs with Target-align software and BLASTx analyses. Gene Ontology (GO) functional analysis suggested that these target genes were involved in mediating peanut growth and development, signal transduction and stress resistance. There were 55 miRNA sequences, verified employing a poly (A) tailing test, with a success rate of up to 91...
November 24, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27915177/identification-and-subcellular-localization-analysis-of-two-rubber-elongation-factor-isoforms-on-hevea-brasiliensis-rubber-particles
#8
Longjun Dai, Zhiyi Nie, Guijuan Kang, Yu Li, Rizhong Zeng
Rubber elongation factor (REF) is the most abundant protein found on the rubber particles or latex from Hevea brasiliensis (the Para rubber tree) and is considered to play important roles in natural rubber (cis-polyisoprene) biosynthesis. 16 BAC (benzyldimethyl-n-hexadecylammonium chloride)/SDS-PAGE separations and mass spectrometric identification had revealed that two REF isoforms shared similar amino acid sequences and common C-terminal sequences. In this study, the gene sequences encoding these two REF isoforms (one is 23...
November 23, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27912109/characterization-and-fine-mapping-of-a-novel-premature-leaf-senescence-mutant-yellow-leaf-and-dwarf-1-in-rice
#9
Luchang Deng, Peng Qin, Zhi Liu, Geling Wang, Weilan Chen, Jianhua Tong, Langtao Xiao, Bin Tu, Yuantao Sun, Wei Yan, Hang He, Jun Tan, Xuewei Chen, Yuping Wang, Shigui Li, Bingtian Ma
Leaves are the main organs in which photosynthates are produced. Leaf senescence facilitates the translocation of photosynthates and nutrients from source to sink, which is important for plant development and especially for crop yield. However, the molecular mechanism of leaf senescence is unknown. Here, we identified a mutant, yellow leaf and dwarf 1 (yld1), which exhibited decreased plant height and premature leaf senescence. Nitroblue tetrazolium and diamiobenzidine staining analyses revealed that the concentrations of reactive oxygen species were higher in yld1 leaves than in wild type leaves...
November 22, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27907856/cdna-aflp-analysis-of-transcripts-induced-in-chickpea-plants-by-tio2-nanoparticles-during-cold-stress
#10
Saeed Amini, Reza Maali-Amiri, Rahmat Mohammadi, Seyyedeh-Sanam Kazemi-Shahandashti
We evaluated the effect of TiO2 nanoparticles (NPs) on cold tolerance (CT) development in two chickpea (Cicer arietinum L.) genotypes (Sel96Th11439, cold tolerant, and ILC533, cold susceptible) by using cDNA-amplified fragment length polymorphism (cDNA-AFLP) technique during the first and sixth days of cold stress (CS) at 4 °C. Selective amplification by primer combinations generated 4200 transcript-derived fragments (TDFs) while 100 of them (2.62%) were differentially expressed. During CS, 60 differentially expressed TDFs of TiO2 NPs-treated plants were cloned and 10 of them produced successfully readable sequences...
November 22, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27894005/uplc-qtof-analysis-reveals-metabolomic-changes-in-the-flag-leaf-of-wheat-triticum-aestivum-l-under-low-nitrogen-stress
#11
Yang Zhang, Xin-Ming Ma, Xiao-Chun Wang, Ji-Hong Liu, Bing-Yan Huang, Xiao-Yang Guo, Shu-Ping Xiong, Gui-Xiao La
Wheat is one of the most important grain crop plants worldwide. Nitrogen (N) is an essential macronutrient for the growth and development of wheat and exerts a marked influence on its metabolites. To investigate the influence of low nitrogen stress on various metabolites of the flag leaf of wheat (Triticum aestivum L.), a metabolomic analysis of two wheat cultivars under different induced nitrogen levels was conducted during two important growth periods based on large-scale untargeted metabolomic analysis using ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF)...
November 18, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27889638/identification-of-caleosin-and-oleosin-in-oil-bodies-of-pine-pollen
#12
Buntora Pasaribu, Chii-Shiarng Chen, Yue Ken Liao, Pei-Luen Jiang, Jason T C Tzen
Unique proteins including steroleosin, caleosin, oleosin-L, and oleosin-G have been identified in seed oil bodies of pine (Pinus massoniana). In this study, mature pollen grains with wing-like bladders were collected from pine (Pinus elliottii). Ultrastructural studies showed that oil bodies were present in pollen grains, but not the attached bladders, and the presence of oil bodies was further confirmed by fluorescent staining with BODIPY 493/503. Stable oil bodies were successfully purified from pine pollen grains, and analyzed to be mainly composed of triacylglycerols...
November 18, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27886559/ectopic-expression-of-ga-2-oxidase-6-from-rapeseed-brassica-napus-l-causes-dwarfism-late-flowering-and-enhanced-chlorophyll-accumulation-in-arabidopsis-thaliana
#13
Jindong Yan, Xiaoying Liao, Reqing He, Ming Zhong, Panpan Feng, Xinmei Li, Dongying Tang, Xuanming Liu, Xiaoying Zhao
Gibberellins (GAs) are endogenous hormones that play an important role in higher plant growth and development. GA2-oxidase (GA2ox) promotes catabolism and inactivation of bioactive GAs or their precursors. In this study, we identified the GA2-oxidase gene, BnGA2ox6, and found it to be highly expressed in the silique and flower. Overexpression of BnGA2ox6 in Arabidopsis resulted in GA-deficiency symptoms, including inhibited elongation of the hypocotyl and stem, delayed seed germination, and late flowering. BnGA2ox6 overexpression reduced silique growth, but had no effect on seed development...
November 15, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27875742/map-based-cloning-and-characterization-of-the-novel-yellow-green-leaf-gene-ys83-in-rice-oryza-sativa
#14
Xiaozhi Ma, Xiaoqiu Sun, Chunmei Li, Rui Huan, Changhui Sun, Yang Wang, Fuliang Xiao, Qian Wang, Purui Chen, Furong Ma, Kuan Zhang, Pingrong Wang, Xiaojian Deng
Leaf-color mutants have been extensively studied in rice, and many corresponding genes have been identified up to now. However, leaf-color mutation mechanisms are diverse and still need further research through identification of novel genes. In the present paper, we isolated a leaf-color mutant, ys83, in rice (Oryza sativa). The mutant displayed a yellow-green leaf phenotype at seedling stage, and then slowly turned into light-green leaf from late tillering stage. In its yellow leaves, photosynthetic pigment contents significantly decreased and the chloroplast development was retarded...
November 9, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27835849/nitric-oxide-signaling-is-involved-in-the-response-to-iron-deficiency-in-the-woody-plant-malus-xiaojinensis
#15
Longmei Zhai, Dashuang Xiao, Chaohua Sun, Ting Wu, Zhenhai Han, Xinzhong Zhang, Xuefeng Xu, Yi Wang
To cope with iron (Fe) deficiency, plants have evolved a wide range of adaptive responses from changes in morphology to altered physiological responses. Recent studies have demonstrated that nitric oxide (NO) is involved in the Fe-deficiency response through hormonal signaling pathways. Here, we report that NO plays a significant role in Malus xiaojinensis, an Fe-efficient woody plant. Fe deficiency triggered significant accumulation of NO in the root system, predominantly in the outer cortical and epidermal cells of the elongation zone...
November 6, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27838598/evaluation-of-effectiveness-of-seed-priming-with-selenium-in-rice-during-germination-under-arsenic-stress
#16
Debojyoti Moulick, Dibakar Ghosh, Subhas Chandra Santra
Due to extensive use of arsenic (As) contaminated ground water in rice cultivation As toxicity has become a growing concern to rice growers of south east Asian countries. The presence of As in soil and irrigation water causes impaired crop growth and development. Selenium (Se) at lower concentration (1.0 mg L(-1)) is reported to be stimulatory on crop growth and it has also an antagonistic behavior with As. With this rationale the present study was conducted to investigate into the potentiality of seed priming technology with Se to ameliorate the As stress on rice seed germination and seedling growth...
November 5, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27837724/comparative-transcriptome-profiling-of-chilling-stress-responsiveness-in-grafted-watermelon-seedlings
#17
Jinhua Xu, Man Zhang, Guang Liu, Xingping Yang, Xilin Hou
Rootstock grafting may improve the resistance of watermelon plants to low temperatures. However, information regarding the molecular responses of rootstock grafted plants to chilling stress is limited. To elucidate the molecular mechanisms of chilling tolerance in grafted plants, the transcriptomic responses of grafted watermelon under chilling stress were analyzed using RNA-seq analysis. Sequencing data were used for digital gene expression (DGE) analysis to characterize the transcriptomic responses in grafted watermelon seedlings...
November 5, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27838599/biology-propagation-and-utilization-of-elite-coconut-varieties-makapuno-and-aromatics
#18
REVIEW
Quang Thien Nguyen, H D Dharshani Bandupriya, Mike Foale, Steve W Adkins
Coconut farming is not only a vital agricultural industry for all tropical countries possessing humid coasts and lowlands, but is also a robust income provider for millions of smallholder farmers worldwide. However, due to its longevity, the security of production of this crop suffers significantly from episodes of natural disasters, including cyclone and tsunami, devastating pest and disease outbreaks, while also affected by price competition for the principal products, especially the oil. In order to reduce these pressures, high-value coconut varieties (makapuno and aromatics) have been introduced in some regions, on a limited scale, but with positive outcomes...
November 4, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27835850/rice-mutants-deficient-in-%C3%AF-3-fatty-acid-desaturase-fad8-fail-to-acclimate-to-cold-temperatures
#19
Altanzaya Tovuu, Ismayil S Zulfugarov, Guangxi Wu, In Soon Kang, Choongrak Kim, Byoung Yong Moon, Gynheung An, Choon-Hwan Lee
To investigate the role of ω-3 fatty acid (FA) desaturase (FAD8) during cold acclimation in higher plants, we characterized three independent T-DNA insertional knock-out mutants of OsFAD8 from rice (Oryza sativa L.). At room temperature (28 °C), osfad8 plants exhibited significant alterations in fatty acid (FA) unsaturation for all four investigated plastidic lipid classes. During a 5-d acclimation period at 4 °C, further changes in FA unsaturation in both wild-type (WT) and mutant plants varied according to the type of lipid...
November 3, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27835848/biochemical-characterization-and-immunolocalization-studies-of-a-capsicum-chinense-jacq-protein-fraction-containing-ding-proteins-and-anti-microbial-activity
#20
Ligia Brito-Argáez, José A Tamayo-Sansores, Dianeli Madera-Piña, Francisco J García-Villalobos, Rosa E Moo-Puc, Ángela Kú-González, Marco A Villanueva, Ignacio Islas-Flores
The DING protein family consists of proteins of great biological importance due to their ability to inhibit carcinogenic cell growth. A DING peptide with Mr ∼7.57 kDa and pI ∼5.06 was detected in G10P1.7.57, a protein fraction from Capsicum chinense Jacq. seeds. Amino acid sequencing of the peptide produced three smaller peptides showing identity to the DING protein family. G10P1.7.57 displayed a phosphatase activity capable of dephosphorylating different phosphorylated substrates and inhibited the growth of Saccharomyces cerevisiae cells...
November 3, 2016: Plant Physiology and Biochemistry: PPB
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