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Plant Physiology and Biochemistry: PPB

Hanna Bandurska, Justyna Niedziela, Małgorzata Pietrowska-Borek, Katarzyna Nuc, Tamara Chadzinikolau, Dominika Radzikowska
Drought is considered the main abiotic stress factor that inhibits growth of crop plants (including barley), limiting yield in many regions worldwide. Predicted climate changes show that in future the frequency and intensity of drought events will rise, so crops that are resistant to this stress are in demand. One of the adaptive metabolic responses to drought is the accumulation of proline. The aim of this study was to examine the effect of 10-day drought on tissue dehydration and proline biosynthesis in leaves as well as in roots of barley genotypes of different origin: the Syrian breeding line Cam/B1/CI and the German cultivar Maresi...
July 8, 2017: Plant Physiology and Biochemistry: PPB
Daniela Moreno, Federico Berli, Rubén Bottini, Patricia N Piccoli, María F Silva
Soluble carbohydrates distribution depends on plant physiology and, among other important factors, determines fruit yield and quality. In plant biology, the analysis of sugars is useful for many purposes, including metabolic studies. Capillary electrophoresis (CE) proved to be a powerful green separation technique with minimal sample preparation, even in complex plant tissues, that can provide high-resolution efficiency. Matrix effect refers to alterations in the analytical response caused by components of a sample other than the analyte of interest...
July 8, 2017: Plant Physiology and Biochemistry: PPB
Tahira Tabassum, Muhammad Farooq, Riaz Ahmad, Ali Zohaib, Abdul Wahid
This study was conducted to evaluate the potential of seed priming following terminal drought on tolerance against salt stress in bread wheat. Drought was imposed in field sown wheat at reproductive stage (BBCH growth stage 49) and was maintained till physiological maturity (BBCH growth stage 83). Seeds of bread wheat, collected from crop raised under terminal drought and/or well-watered conditions, were subjected to hydropriming and osmopriming (with 1.5% CaCl2) and were sown in soil-filled pots. After stand establishment, salt stress treatments viz...
July 8, 2017: Plant Physiology and Biochemistry: PPB
Gonzalo Caló, Dana Scheidegger, Giselle M A Martínez-Noël, Graciela L Salerno
Calcium-dependent protein kinases (CDPKs) regulate plant development and many stress signalling pathways through the complex cytosolic [Ca(2+)] signalling. The genome of Ostreococcus tauri (Ot), a model prasinophyte organism that is on the base of the green lineage, harbours three sequences homologous to those encoding plant CDPKs with the three characteristic conserved domains (protein kinase, autoregulatory/autoinhibitory, and regulatory domain). Phylogenetic and structural analyses revealed that putative OtCDPK proteins are closely related to CDPKs from other Chlorophytes...
July 8, 2017: Plant Physiology and Biochemistry: PPB
Florent Lavergne, Claire Richard, Marc Saudreau, Jean-Stéphane Venisse, Boris Fumanal, Pascale Goupil
The plant activator acibenzolar-S-methyl (BTH) undergoes phototransformation when exposed to solar radiation. Here we investigated the changes in its elicitation properties on BY-2 tobacco cells at different stages of the photochemical reaction. Both pure BTH and formulated BTH were irradiated in controlled conditions to achieve different extents of conversion. Both pure BTH (900 μM) and Bion(®) (0.4 g.L(-1)) induced BY-2 cell death, but BTH photoconverted to an extent of 25 ± 3% lowered the cell death rate...
July 8, 2017: Plant Physiology and Biochemistry: PPB
Olga Rozentsvet, Anatoly Kosobryukhov, Ilya Zakhozhiy, Galina Tabalenkova, Viktor Nesterov, Elena Bogdanova
Structural and functional parameters and redox homeostasis in leaves of Artemisia santonica L. under environment conditions of Elton lake (the southeast region of the European part of Russia) were measured. The highest photosynthetic apparatus (PA) activity in A. santonica leaves on CO2 gas exchange as well as the highest content of green pigments was observed in the morning. Maximum share of violaxanthin cycle key pigments - zeaxanthin (Zx) and antheraxanthin (Ax) was observed in the afternoon and decreased in the evening...
July 6, 2017: Plant Physiology and Biochemistry: PPB
Tanja Zadražnik, Anders Moen, Wolfgang Egge-Jacobsen, Vladimir Meglič, Jelka Šuštar-Vozlič
Drought is one of the major abiotic stress conditions limiting crop growth and productivity. Glycosylation of proteins is very important post-translational modification that is involved in many physiological functions and biological pathways. To understand the involvement of N-glycoproteins in the mechanism of drought response in leaves of common bean, a proteomic approach using lectin affinity chromatography, SDS-PAGE and LC-MS/MS was applied. Quantification of N-glycoproteins was performed using MaxQuant with a label free quantification approach...
July 5, 2017: Plant Physiology and Biochemistry: PPB
Adrian Richard Schenberger Santos, Rafael Mazer Etto, Rafaela Wiegand Furmam, Denis Leandro de Freitas, Karina Freire d'Eça Nogueira Santos, Emanuel Maltempi de Souza, Fábio de Oliveira Pedrosa, Ricardo Antônio Ayub, Maria Berenice Reynaud Steffens, Carolina Weigert Galvão
Soil bacteria colonization in plants is a complex process, which involves interaction between many bacterial characters and plant responses. In this work, we labeled Azospirillum brasilense FP2 (wild type) and HM053 (excretion-ammonium) strains by insertion of the reporter gene gusA-kanamycin into the dinitrogenase reductase coding gene, nifH, and evaluated bacteria colonization in barley (Hordeum vulgare). In addition, we determined inoculation effect based on growth promotion parameters. We report an uncommon endophytic behavior of A...
July 4, 2017: Plant Physiology and Biochemistry: PPB
Thaisa Moro Cantu-Jungles, Marcello Iacomini, Thales R Cipriani, Lucimara M C Cordeiro
The polysaccharide compositions of primary and secondary cell walls of members of the family Arecaceae in the commelinid clade of monocotyledonous plants have previously been found to be distinguishable from other commelinid families, and to be more similar to those of non-commelinids. However, few studies have been conducted. We aimed to extract and characterize the main cell-wall polysaccharides in the fruit pulp of tucumã (Astrocaryum aculeatum), a member of Arecaceae family. Hemicellulosic polysaccharides extracted by alkali from the fruit pulp were present in greater proportions (6...
July 4, 2017: Plant Physiology and Biochemistry: PPB
I Sriram Sandeep, Suryasnata Das, Noohi Nasim, Antaryami Mishra, Laxmikanta Acharya, Raj Kumar Joshi, Sanghamitra Nayak, Sujata Mohanty
Curcuma longa L., accumulates substantial amount of curcumin and essential oil. Little is known about the differential expression of curcumin synthase (CURS) gene and consequent curcumin content variations at different agroclimatic zones. The present study aimed to evaluate the effect of climate, soil and harvesting phase on expression of CURS gene for curcumin yield in two high yielding turmeric cultivars. Expression of CURS gene at different experimental zones as well as at different harvesting phase was studied through transcriptional analysis by qRT-PCR...
July 4, 2017: Plant Physiology and Biochemistry: PPB
Laura Rustioni, Daniele Grossi, Lucio Brancadoro, Osvaldo Failla
The work aims at the description of the iron deficiency symptoms in grapevine leaves by reflectance spectroscopy at the plant and leaf levels. 5 genotypes of Vitis spp. were selected and grown in hydroponic conditions with and without iron supply. 450 spectra were collected among basal, young and apical leaves, as well as veins and interveinal areas. Iron deficiency produced significant and characteristic modifications in the pigment accumulation, proportion and distribution in plants. Basal leaves resulted to have higher concentrations of photosynthetic pigments in stressed plants with respect to the control, probably due to compensation effects...
June 30, 2017: Plant Physiology and Biochemistry: PPB
Yingling Wu, Wenzhao Wang, Yanzhi Li, Xinlong Dai, Guoliang Ma, Dawei Xing, Mengqing Zhu, Liping Gao, Tao Xia
Phenylalanine ammonia-lyase (PAL), the branch point enzyme controlling the flow of primary metabolism into second metabolism, converts the L-phenylalanine (L-Phe) to yield cinnamic acid. Based on the sequencing data available from eight transcriptome projects, six PAL genes have been screened out, cloned, and designated as CsPALa-CsPALf. The phylogenetic tree showed that CsPALs were divided into three subgroups, PALa and PALb, PALc and PALd, and PALe and PALf. All six CsPALs exhibited indiscriminate cytosolic locations in epidermis cells and mesophyll cells...
June 29, 2017: Plant Physiology and Biochemistry: PPB
Ilya E Zlobin, Alexander V Kartashov, George V Shpakovski
We investigated the specific features of copper and zinc excess action on the roots of canola (Brassica napus L.) plants. Copper rapidly accumulated in canola root cells and reached saturation during several hours of treatment, whereas the root zinc content increased relatively slowly. Excessive copper and zinc entry inside the cell resulted in significant cell damage, as evidenced by alterations in plasmalemma permeability and decreases in cellular enzymatic activity. Zinc excess specifically damaged root hair cells, which correlated with a pronounced elevation of their labile zinc level...
June 28, 2017: Plant Physiology and Biochemistry: PPB
Vivek Kumar Singh, Harikesh Bahadur Singh, Ram Sanmukh Upadhyay
Fusarium wilt is one of the most prevalent and damaging diseases of tomato. Among various toxins secreted by the Fusarium oxysporum f. sp. lycopersici (causal agent of Fusarium wilt of tomato), fusaric acid (FA) is suspected to be a potent pathogenicity factor in tomato wilt disease development. With this rationale the present study was carried out with physiological, biochemical and proteomic perspectives. Treatment of FA was given to the leaves of tomato directly through infiltration to show the characteristic features of Fusarium wilt of tomato...
June 28, 2017: Plant Physiology and Biochemistry: PPB
Chevonne E Carlow, J Trent Faultless, Christine Lee, Mahbuba Siddiqua, Alison Edge, Annette Nassuth
The highly conserved CBF pathway is crucial in the regulation of plant responses to low temperatures. Extensive analysis of Arabidopsis CBF proteins revealed that their functions rely on several conserved amino acid domains although the exact function of each domain is disputed. The question was what functions similar domains have in CBFs from other, overwintering woody plants such as Vitis, which likely have a more involved regulation than the model plant Arabidopsis. A total of seven CBF genes were cloned and sequenced from V...
June 23, 2017: Plant Physiology and Biochemistry: PPB
Candyce Ann Areington, Boby Varghese, Sershen
The negative impacts of air pollution have made monitoring of air quality increasingly important, especially in heavily industrialized areas such as the South Durban Basin (SDB), in South Africa. Bioindicators such as trees can complement conventional air quality monitoring and be used to prioritise vulnerable areas. This study assessed the utility of Brachylaena discolor DC. tree leaves as a bioindicator of sulfur dioxide pollution. This involved correlating ground level sulfur dioxide concentrations ([SO2]) with B...
June 23, 2017: Plant Physiology and Biochemistry: PPB
Mahmut Sinan Taspinar, Murat Aydin, Esra Arslan, Muhammet Yaprak, Guleray Agar
Deltamethrin, synthetic type II pyrethroid, is one of the most widely used pesticide in agriculture. Intense use of deltamethrin can cause permanant or temporary damages in nontarget plant species. In this study, we aimed to determine DNA methylation change and DNA damage level in Phaseolus vulgaris seedlings subjected to different concentrations of deltamethrin (0.02, 0.1 and 0.5 ppm). Coupled Restriction Enzyme Digestion-Random Amplification (CRED-RA) was performed to analyze the changes of DNA methylation as well as Randomly Amplified Polymorphic DNA (RAPD) was used for genotoxic influences estimation and genomic stability...
June 21, 2017: Plant Physiology and Biochemistry: PPB
Madhu Rawat, Rajeev Nayan, Bhawana Negi, M G H Zaidi, Sandeep Arora
Metal nanoparticles have been reported to influence plant growth and productivity. However, the molecular mechanisms underlying the effects have not been completely understood yet. Current work describes the physio-biochemical basis of iron sulfide nanoparticle induced growth and yield enhancement in Brassica juncea. Iron sulfide nanoparticles (0, 2, 4, 6, 8 and 10 ppm) were used for foliar treatment of B. juncea at 30, 45 and 60 days after sowing, under field conditions. Foliar treatment of 4 ppm iron sulfide nanoparticle solution at 30 days after sowing brought maximal enhancement in agronomic attributes of the treated plants...
June 20, 2017: Plant Physiology and Biochemistry: PPB
Hui Wang, Zhijian Chen, Guodao Liu, Changjun Bai, Hong Qiu, Yanxing Jia, Lijuan Luo
Anthracnose caused by Colletotrichum gloeosporioides is one of the most destructive fungal diseases of many plants, including stylo (Stylosanthes spp.), which is an important tropical forage legume. Although C. gloeosporioides-caused anthracnose is the major constraint limiting the growth and yield of stylo, little information is available regarding the responses of stylo during the infection process of this pathogen. This study investigated the changes in growth, the antioxidant system and gene expression in stylo in response to C...
June 20, 2017: Plant Physiology and Biochemistry: PPB
Camila Goldy, Laura A Svetaz, Claudia A Bustamante, Marco Allegrini, Gabriel H Valentini, María F Drincovich, Alisdair R Fernie, María V Lara
The worldwide-distributed leaf peach curl disease is caused by the biotroph Taphrina deformans. To characterize the plant-fungus interaction, resistant and susceptible Prunus persica genotypes grown in the orchard were studied. Asymptomatic leaves were tested for fungal presence. In all resistant leaves analyzed the fungus was not detected. Conversely, leaves from the susceptible genotype were categorized according to the presence or absence of the pathogen. Comparative metabolomic analysis disclosed the metabolite composition associated with resistant and susceptible interactions, and of compounds involved in fungal growth inhibition such as chlorogenic acid, whose in vitro antifungal activity was verified in this work...
June 17, 2017: Plant Physiology and Biochemistry: PPB
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