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Plant Physiology and Biochemistry: PPB

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https://www.readbyqxmd.com/read/28942291/t-homoeolog-specific-plasma-membrane-protein-3-nt-t-pmp3-2-in-polyploid-nicotiana-tabacum-shows-conserved-alternative-splicing-derived-from-extant-nicotiana-tomentosiformis-parent
#1
Kumkum Kumari, Vidya Jegadeeson, S Suji, Gayatri Venkataraman, Ajay Parida
Abiotic stress induced plasma membrane protein 3 (PMP3) genes occur as multigene families in plants, coding for hydrophobic proteins. Group I PMP3s code for shorter ORFs while Group II PMP3s code for proteins with C-terminal extensions. Allotetraploid Nicotiana tabacum (SSTT; 2n = 48) derives its parentage from extant ancestors related to Nicotiana sylvestris (SS) and Nicotiana tomentosiformis (TT). Polyploidization triggers complex genetic and epigenetic changes, often leading to homoeolog-specific retention or loss of function, sub-functionalization or neo-functionalization...
September 18, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28942290/changing-of-biochemical-parameters-and-cell-wall-polysaccharides-distribution-during-physiological-development-of-tomato-fruit
#2
Monika Chylińska, Monika Szymańska-Chargot, Kamil Deryło, Dorota Tchórzewska, Artur Zdunek
This study was aimed at discovering an impact of biochemical parameters (like content of cell wall polysaccharides, phenolic compounds, ascorbic acid or activity of pectinolytic enzymes) on cell wall microstructure during physiological fruit development. Cell wall microstructure as well as changes in the polysaccharides distribution were examined by confocal Raman microscopy. Also there was a need to simultaneous usage of reference method which is immunolabeling. A tomato fruit (Solanum lycopersicum cv Cerise) has been selected to observe the changes taking place in the fruit cell wall as it recently has been recognized as a model species for exploring fruit development processes such as fruit formation and ripening...
September 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28942180/de-novo-transcriptome-analysis-in-dendrobium-and-identification-of-critical-genes-associated-with-flowering
#3
Yue Chen, Qi Shen, Renan Lin, Zhuangliu Zhao, Chenjia Shen, Chongbo Sun
Artificial control of flowering time is pivotal for the ornamental value of orchids including the genus Dendrobium. Although various flowering pathways have been revealed in model plants, little information is available on the genetic regualtion of flowering in Dendrobium. To identify the critical genes associated with flowering, transcriptomes from four organs (leaf, root, stem and flower) of D. officinale were analyzed in our study. In total, 2645 flower-specific transcripts were identified. Functional annotation and classification suggested that several metabolic pathways, including four sugar-related pathways and two fatty acid-related pathways, were enriched...
September 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28938177/the-osmotin-of-calotropis-procera-latex-is-not-expressed-in-laticifer-free-cultivated-callus-and-under-salt-stress
#4
Isabel C C Souza, Márcio V Ramos, José H Costa, Cleverson D T Freitas, Raquel S B Oliveira, Frederico B Moreno, Renato A Moreira, Cristina P S Carvalho
The latex of Calotropis procera has previously been reported to contain osmotin. This protein (CpOsm) inhibited phytopathogens and this was mechanistically characterized. Here, the time-course profile of CpOsm transcripts was examined in the salt-stressed cultivated callus of C. procera in order to better understand its role in the physiology of the plant. Stressed callus (80 mM NaCl) showed an unbalanced content of organic compounds (proline and total soluble sugar) and inorganic ions (Na(+), Cl(-), and K(+))...
September 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28938176/genotypic-differences-in-physiological-and-biochemical-responses-to-salinity-stress-in-melon-cucumis-melo-l-plants-prospects-for-selection-of-salt-tolerant-landraces
#5
Behrooz Sarabi, Sahebali Bolandnazar, Nasser Ghaderi, Jaleh Ghashghaie
Melon (Cucumis melo L.) is one of the most important horticultural crops in Iran often cultivated in arid and semiarid regions of the country with salinity problems. The objective of this work was to better understand the mechanisms of physiological and biochemical responses to salinity stress of five Iranian melon landraces "Samsuri", "Kashan", "Khatouni", "Suski-e-Sabz", and "Ghobadlu" from different geographical origins, and "Galia" F1 cultivar. Plants were grown under greenhouse conditions and irrigated with half-strength Hoagland solution containing 0, 30, 60, or 90 mM NaCl for 60 days...
September 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28926799/iron-deficiency-stimulates-anthocyanin-accumulation-in-grapevine-apical-leaves
#6
Leila Caramanico, Laura Rustioni, Gabriella De Lorenzis
Iron chlorosis is a diffuse disorder affecting Mediterranean vineyards. Beside the commonly described symptom of chlorophyll decrease, an apex reddening was recently observed. Secondary metabolites, such as anthocyanins, are often synthetized to cope with stresses in plants. The present work aimed to evaluate grapevine responses to iron deficiency, in terms of anthocyanin metabolism (reflectance spectrum, total anthocyanin content, HPLC profile and gene expression) in apical leaves of Cabernet sauvignon and Sangiovese grown in hydroponic conditions...
September 9, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28898745/glycosylation-is-important-for-fcxth1-activity-as-judged-by-its-structural-and-biochemical-characterization
#7
Ángela Méndez-Yañez, Dina Beltrán, Constanza Campano-Romero, Sebastián Molinett, Raúl Herrera, María Alejandra Moya-León, Luis Morales-Quintana
Xyloglucan endotransglycosylase/hydrolases (XTH) may have endotransglycosylase (XET) and/or hydrolase (XEH) activities. Previous studies suggest that XTHs might play a key role in ripening of Fragaria chiloensis fruit as FcXTH1 transcripts increase as fruit softens. FcXTH1 protein sequence contains a conserved N-glycosylation site adjacent to catalytic residues. The FcXTH1 structure was built through comparative modeling methodology, the structure displays a β-jellyroll-type folding with a curvature generated by eight antiparallel β-sheets that holds the catalytic motif that is oriented towards the central cavity of the protein...
September 9, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28917143/glutathione-induced-alleviation-of-cadmium-toxicity-in-zea-mays
#8
Mei Li, Pengfei Hao, Fangbin Cao
Glutathione (GSH) is known to alleviate cadmium (Cd) stress in many plant species. However, the comprehensive mechanisms responsible for this effect in maize are still need more investigation. Here, a combination of physiological and molecular approaches was utilized in GSH-Cd treated maize seedlings, which revealed that GSH reversed the adverse effects of Cd, as reflected by plant growth, plant hormones, vacuole, stoma development, gene expression, etc. Plant growth, root cell viability, photosynthetic capacity, redox equilibrium, and cell ultrastructure recovery following GSH treatment, coupled with the strong up-regulation of Cd tolerance-related genes (e...
September 8, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28917142/reactions-of-tobacco-genotypes-with-different-antioxidant-capacities-to-powdery-mildew-and-tobacco-mosaic-virus-infections
#9
Gábor Gullner, Csilla Juhász, Adél Németh, Balázs Barna
The interactions of powdery mildew (Golovinomyces orontii) and Tobacco mosaic virus (TMV) with tobacco lines having down or upregulated antioxidants were investigated. Xanthi-nc, its salicylic acid-deficient NahG mutant, a paraquat-sensitive Samsun (PS) and its paraquat tolerant (PT) mutant were used. Cell membrane damage caused by H2O2 was significantly higher in NahG than Xanthi, whereas it was lower in PT than in PS. Leakage of ions from PT was reduced by the powdery mildew infection. On the other hand TMV inoculation led to a 6-fold and 2-fold elevation of ion leakage from hypersensitive resistant NahG and Xanthi leaves, respectively, whereas ion leakage increased slightly from susceptible PS leaves...
September 8, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28917145/cell-wall-pectin-methyl-esterification-and-organic-acids-of-root-tips-involve-in-aluminum-tolerance-in-camellia-sinensis
#10
Dongqin Li, Zaifa Shu, Xiaoli Ye, Jiaojiao Zhu, Junting Pan, Weidong Wang, Pinpin Chang, Chuanlei Cui, Jiazhi Shen, Wanping Fang, Xujun Zhu, Yuhua Wang
Tea plant (Camellia sinensis (O.) Kuntze) can survive from high levels of aluminum (Al) in strongly acidic soils. However, the mechanism driving its tolerance to Al, the predominant factor limiting plant growth in acid condition, is still not fully understood. Here, two-year-old rooted cuttings of C. sinensis cultivar 'Longjingchangye' were used for Al resistance experiments. We found that the tea plants grew better in the presence of 0.4 mM Al than those grew under lower concentration of Al treatments (0 and 0...
September 7, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28926798/cloning-and-expression-profiling-of-the-pacsnrk2-and-pacpp2c-gene-families-during-fruit-development-aba-treatment-and-dehydration-stress-in-sweet-cherry
#11
Xinjie Shen, Xiao Guo, Di Zhao, Qiang Zhang, Yuzhuang Jiang, Yantao Wang, Xiang Peng, Yan Wei, Zefeng Zhai, Wei Zhao, Tianhong Li
Plant SNF1-related protein kinase 2 (SnRK2) and protein phosphatase 2C (PP2C) family members are core components of the ABA signal transduction pathway. SnRK2 and PP2C proteins have been suggested to play crucial roles in fruit ripening and improving plant tolerance to drought stress, but supporting genetic information has been lacking in sweet cherry (Prunus avium L.). Here, we cloned six full-length SnRK2 genes and three full-length PP2C genes from sweet cherry cv. Hong Deng. Quantitative PCR analysis revealed that PacSnRK2...
September 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28917144/silicon-improves-seed-germination-and-alleviates-drought-stress-in-lentil-crops-by-regulating-osmolytes-hydrolytic-enzymes-and-antioxidant-defense-system
#12
Sajitha Biju, Sigfredo Fuentes, Dorin Gupta
Silicon (Si) has been widely reported to have beneficial effect on mitigating drought stress in plants. However, the effect of Si on seed germination under drought conditions is still poorly understood. This research was carried out to ascertain the role of Si to abate polyethylene glycol-6000 mediated drought stress on seed germination and seedling growth of lentil. Results showed that drought stress significantly decreased the seed germination traits and increased the concentration of osmolytes (proline, glycine betaine and soluble sugars), reactive oxygen species (hydrogen peroxide and superoxide anion) and lipid peroxides in lentil seedlings...
September 5, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28898746/plant-growth-promoting-endophyte-piriformospora-indica-alleviates-salinity-stress-in-medicago-truncatula
#13
Liang Li, Lei Li, Xiaoyang Wang, Pengyue Zhu, Hongqing Wu, Shuting Qi
Piriformospora indica, a cultivable root endophytic fungus, induces growth promotion as well as biotic stress resistance and tolerance to abiotic stress in a broad range of host plants. In this study, the potential protection for M Medicago truncatula plants from salinity stress by P. indica was explored. The improved plant growth under severe saline condition was exhibited in P. indica-colonized lines. Moreover, the antioxidant enzymes activities and hyphae density in roots were increased by the endophyte under high salt concentration...
September 1, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28881277/functional-identification-of-mdpif1-as-a-phytochrome-interacting-factor-in-apple
#14
Li-Jie Zhou, Ke Mao, Yu Qiao, Han Jiang, Yuan-Yuan Li, Yu-Jin Hao
Light plays a central role in regulating both apple plant yield and fruit quality formation; however, the Phytochrome interacting factors (PIFs), which are the main components of Phytochrome-mediated light signal transduction in apple, have rarely been characterized. Here, we isolated and identified a PIF-like protein(MdPIF1) in apple, which is similar to AtPIF1. MdPIF1 was constitutively expressed at different levels in various apple tissues, and the transcription level of MdPIF1 was significantly induced during seed germination...
August 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28866233/cyanobacteria-growing-on-tree-barks-possess-high-amount-of-sunscreen-compound-mycosporine-like-amino-acids-maas
#15
Anjali Singh, Madhu Bala Tyagi, Ashok Kumar
The present study describes cyanobacterial species composition and their dominance in biological crusts from barks of different trees, roof top of building and soil of agricultural field. An attempt was also made to explore the presence of photoprotective compounds such as mycosporine-like amino acids (MAAs) in the crust samples. Microscopic examination and growth studies revealed the presence of Oscillatoria species in all the crust samples excluding the crust of roof top of a building. Study on the abundance of dominant genera showed marked differences among various crust samples but Hapalosiphon, Lyngbya, Oscillatoria and Scytonema sp...
August 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28866235/genome-wide-analysis-of-the-yabby-family-in-soybean-and-functional-identification-of-gmyabby10-involvement-in-high-salt-and-drought-stresses
#16
Shu-Ping Zhao, Dan Lu, Tai-Fei Yu, Yu-Jie Ji, Wei-Jun Zheng, Shuang-Xi Zhang, Shou-Cheng Chai, Zhan-Yu Chen, Xi-Yan Cui
YABBY family is a plant specific transcription factor family, with the typical N-terminal C2C2 type zinc finger domain and the C-terminal YABBY conservative structure domain, which plays important biological roles in plant growth, development and morphogenesis. In this study, a total of 17 YABBY genes were identified in the soybean genome. The results of this research showed that 17 soybean YABBY genes were located on 11 chromosomes. Analysis of putative cis-acting elements showed that soybean YABBY genes contained lots of MYB and MYC elements...
August 30, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28866234/relative-contribution-of-na-k-homeostasis-photochemical-efficiency-and-antioxidant-defense-system-to-differential-salt-tolerance-in-cotton-gossypium-hirsutum-l-cultivars
#17
Ning Wang, Wenqing Qiao, Xiaohong Liu, Jianbin Shi, Qinghua Xu, Hong Zhou, Gentu Yan, Qun Huang
In this study, the role of specific components of different coping strategies to salt load were identified. A pot experiment was conducted with four cotton (Gossypium hirsutum L.) cultivars (differing in salt-sensitivity) under salinity stress. Based on observed responses in growth performance and physiological characteristics, CZ91 was the most tolerant of the four cultivars, followed by cultivars CCRI44 and CCRI49, with Z571 being much more sensitive to salt stress. To perform this tolerant response, they implement different adaptative mechanisms to cope with salt-stress...
August 30, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28910707/spectral-phasor-analysis-reveals-altered-membrane-order-and-function-of-root-hair-cells-in-arabidopsis-dry2-sqe1-5-drought-hypersensitive-mutant
#18
Florencia Sena, Mariana Sotelo-Silveira, Soledad Astrada, Miguel A Botella, Leonel Malacrida, Omar Borsani
Biological membranes allow the regulation of numerous cellular processes, which are affected when unfavorable environmental factors are perceived. Lipids and proteins are the principal components of biological membranes. Each lipid has unique biophysical properties, and, therefore the lipid composition of the membrane is critical to maintaining the bilayer structure and functionality. Membrane composition and integrity are becoming the focus of studies aiming to understand how plants adapt to its environment...
August 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28869871/biochemical-characterization-and-homology-modeling-of-polyamine-oxidase-from-cyanobacterium-synechocystis-sp-pcc-6803
#19
Khanittha Samasil, Leonor Lopes de Carvalho, Pirkko Mäenpää, Tiina A Salminen, Aran Incharoensakdi
The intracellular polyamine contents are regulated not only by polyamine biosynthesis and transport but also by polyamine degradation catalyzed by copper-dependent amine oxidase (DAO) and FAD-dependent polyamine oxidase (PAO). The genome sequence of Synechocystis sp. PCC 6803 reveals the presence of at least one putative polyamine oxidase gene, slr5093. The open reading frame of slr5093 encoding Synechocystis polyamine oxidase (SynPAO, E.C. 1.5.3.17) was expressed in Escherichia coli. The purified recombinant enzyme had the characteristic absorption spectrum of a flavoprotein with absorbance peaks at 380 and 450 nm...
August 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28866236/differential-accumulation-of-flavonoids-and-phytohormones-resulting-from-the-canopy-rootstock-interaction-of-citrus-plants-subjected-to-dehydration-rehydration
#20
Ivanildes C Dos Santos, Alex-Alan Furtado de Almeida, Carlos P Pirovani, Márcio Gilberto Cardoso Costa, Maria Fatima das Graças Fernandes da Silva, Barbara Sayuri Bellete, Luciano Freschi, Walter Soares Filho, Maurício Antônio Coelho Filho, Abelmon da Silva Gesteira
Water scarcity can elicit drastic changes in plant metabolic and hormonal regulation, which may be of fundamental importance to stress tolerance. The study of plant the metabolic alterations in response to water deficit, especially the effects of the rootstocks level, is important to elucidate the mechanisms associated to drought tolerance. To verify the influence of rootstock and grafting on the tolerance to drought in citrus plants, we analyzed the growth, phytohormone levels and flavonoid profiles in grafted and ungrafted citrus plants subjected to different soil water regimes on plant status (well-watered, moderate drought and severe drought and rehydrated) under field conditions...
August 25, 2017: Plant Physiology and Biochemistry: PPB
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