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Plant Physiology and Biochemistry: PPB

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https://www.readbyqxmd.com/read/28551420/an-analysis-of-the-development-of-cauliflower-seed-as-a-model-to-improve-the-molecular-mechanism-of-abiotic-stress-tolerance-in-cauliflower-artificial-seeds
#1
Hail Z Rihan, Mohammed Al-Issawi, Michael P Fuller
The development stages of conventional cauliflower seeds were studied and the accumulation of dehydrin proteins through the maturation stages was investigated with the aim of identifying methods to improve the viability of artificial seeds of cauliflower. While carbohydrate, ash and lipids increased throughout the development of cauliflower traditional seeds, proteins increased with the development of seed and reached the maximum level after 75 days of pollination, however, the level of protein started to decrease after that...
May 22, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28551419/potential-link-between-fruit-yield-quality-parameters-and-phytohormonal-changes-in-preharvest-uv-c-treated-strawberry
#2
Yanqun Xu, Marie Thérèse Charles, Zisheng Luo, Dominique Roussel, Daniel Rolland
Preharvest ultraviolet-C (UV-C) treatment of strawberry is a very new approach, and little information is available on the effect of this treatment on plant growth regulators. In this study, the effect of preharvest UV-C irradiations at three different doses on strawberry yield, fruit quality parameters and endogenous phytohormones was investigated simultaneously. The overall marketable yield of strawberry was not affected by the preharvest UV-C treatments, although more aborted and misshapen fruits were found in UV-C treated groups than in the untreated control...
May 19, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28551418/metabolomic-and-physico-chemical-approach-unravel-dynamic-regulation-of-calcium-in-sweet-cherry-fruit-physiology
#3
Michail Michailidis, Evangelos Karagiannis, Georgia Tanou, Katerina Karamanoli, Athina Lazaridou, Theodora Matsi, Athanassios Molassiotis
Calcium (Ca(2)) nutrition has a significant role in fruit physiology; however, the underlying mechanism is still unclear. In this study, fruit quality in response to CaCl2, applied via foliar sprays (Ca(2)) or/and hydro-cooling water (CaHC), was characterized in 'Lapins' cherries at harvest, just after cold storage (20 days at 0 °C) as well as after cold storage followed by 2 days at 20 °C, herein defined as shelf-life period. Data indicated that pre- and post-harvest Ca(2+) applications increased total Ca(2+) and cell wall bound Ca(2+), respectively...
May 17, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28527971/identification-and-comprehensive-evaluation-of-reference-genes-for-rt-qpcr-analysis-of-host-gene-expression-in-brassica-juncea-aphid-interaction-using-microarray-data
#4
Chet Ram, Murali Krishna Koramutla, Ramcharan Bhattacharya
Brassica juncea is a chief oil yielding crop in many parts of the world including India. With advancement of molecular techniques, RT-qPCR based study of gene-expression has become an integral part of experimentations in crop breeding. In RT-qPCR, use of appropriate reference gene(s) is pivotal. The virtue of the reference genes, being constant in expression throughout the experimental treatments, needs to be validated case by case. Appropriate reference gene(s) for normalization of gene-expression data in B...
May 11, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28527413/monochromatic-green-light-induces-an-aberrant-accumulation-of-geranylgeranyled-chlorophylls-in-plants
#5
Zuzana Materová, Roman Sobotka, Barbora Zdvihalová, Michal Oravec, Jakub Nezval, Václav Karlický, Daniel Vrábl, Michal Štroch, Vladimír Špunda
Light quality is an important environmental factor affecting the biosynthesis of photosynthetic pigments whose production seems to be affected not only quantitatively but also qualitatively. In this work, we set out to identify unusual pigment detected in leaves of barley (Hordeum vulgare L.) and explain its presence in plants grown under monochromatic green light (GL; 500-590 nm). The chromatographic analysis (HPLC-DAD) revealed that a peak belonging to this unknown pigment is eluted between chlorophyll (Chl) a and b...
May 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28501026/metabolically-speaking-possible-reasons-behind-the-tolerance-of-sugar-belle-mandarin-hybrid-to-huanglongbing
#6
Nabil Killiny, Maria Filomena Valim, Shelley E Jones, Ahmad A Omar, Faraj Hijaz, Fred G Gmitter, Jude W Grosser
Huanglongbing (HLB) is currently considered the most destructive disease of citrus. Since its spread to the Americas, HLB has killed millions of trees and caused a sharp decline in production in many citrus growing regions. With the continuous spread of HLB disease in Florida and worldwide, there is an urgent need for the development of commercial citrus cultivars with a strong tolerance to HLB. Interestingly, field observations showed that some of the recently released mandarin hybrids such as 'Sugar Belle' were tolerant to HLB...
May 4, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28486137/cloning-and-characterization-of-a-novel-gigantea-gene-in-sweet-potato
#7
Wei Tang, Hui Yan, Zai-Xing Su, Sung-Chul Park, Ya-Ju Liu, Yun-Gang Zhang, Xin Wang, Meng Kou, Dai-Fu Ma, Sang-Soo Kwak, Qiang Li
The transition from vegetative to reproductive growth, a key event in the lifecycle of a plant, is affected by environmental stresses. The flowering-time regulator GIGANTEA (GI) may be contributing to susceptibility of the regulation of photoperiodic flowering, circadian rhythm control, and abiotic stress resistance in Arabidopsis. However, the role of GI in sweet potato remains unknown. Here, we isolated and characterized a GI gene (IbGI) from sweet potato (Ipomoea batatas [L.] Lam). The IbGI cDNA sequence was isolated based on information from a sweet potato transcriptome database...
April 27, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28482331/biochemical-characterization-of-the-triticale-tspap1-a-new-type-of-plant-prolyl-aminopeptidase-and-its-impact-on-proline-content-and-flowering-time-in-transgenic-arabidopsis-plants
#8
Edyta Zdunek-Zastocka, Agnieszka Grabowska, Tomasz Branicki, Beata Michniewska
Proline aminopeptidase (PAP, EC 3.4.11.5) is the only enzyme that effectively releases proline from the N-termini of peptides. The amino acid sequence of the PAP from Triticosecale, TsPAP1, comprises conserved regions, characteristic of the monomeric forms of PAP found in bacteria but not yet identified in plants. Therefore, we aimed to obtain and biochemically characterize the TsPAP1 protein. The recombinant TsPAP1 protein was received through heterologous expression of the TsPAP1 coding sequence in a bacterial expression system and purified with affinity chromatography...
April 27, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28478206/polyamines-contribute-to-salinity-tolerance-in-the-symbiosis-medicago-truncatula-sinorhizobium-meliloti-by-preventing-oxidative-damage
#9
Miguel López-Gómez, Javier Hidalgo-Castellanos, J Rubén Muñoz-Sánchez, Agustín J Marín-Peña, Carmen Lluch, José A Herrera-Cervera
Polyamines (PAs) such as spermidine (Spd) and spermine (Spm) are small ubiquitous polycationic compounds that contribute to plant adaptation to salt stress. The positive effect of PAs has been associated to a cross-talk with other anti-stress hormones such as brassinosteroids (BRs). In this work we have studied the effects of exogenous Spd and Spm pre-treatments in the response to salt stress of the symbiotic interaction between Medicago truncatula and Sinorhizobium meliloti by analyzing parameters related to nitrogen fixation, oxidative damage and cross-talk with BRs in the response to salinity...
April 27, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28500994/salt-tolerance-mechanisms-induced-in-stevia-rebaudiana-bertoni-effects-on-mineral-nutrition-antioxidative-metabolism-and-steviol-glycoside-content
#10
Daniel Cantabella, Abel Piqueras, José Ramón Acosta-Motos, Agustina Bernal-Vicente, José A Hernández, Pedro Díaz-Vivancos
In order to cope with challenges linked to climate change such as salinity, plants must develop a wide spectrum of physiological and molecular mechanisms to rapidly adapt. Stevia rebaudiana Bertoni plants are a case in point. According to our findings, salt stress has no significant effect on plant growth in these plants, which accumulate sodium (Na(+)) in their roots, thus avoiding excessive Na(+) accumulation in leaves. Furthermore, salt stress (NaCl stress) increases the potassium (K(+)), calcium (Ca(2+)), chloride ion (Cl(-)) and proline concentrations in Stevia leaves, which could contribute to osmotic adjustment...
April 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28494394/physiological-and-biochemical-changes-attenuate-the-effects-of-drought-on-the-cerrado-species-vatairea-macrocarpa-benth-ducke
#11
Evandro Alves Vieira, Maria das Graças Silva, Camila Fernandes Moro, Valdemir Antônio Laura
Drought is considered the main abiotic stress because it influences the distribution of plant species and limits the productivity of ecosystems. The aim of this study was to evaluate the effects of drought on physiological and biochemical parameters during the initial development of Vatairea macrocarpa, a native cerrado species. Plants were subjected to daily watering (control); suppression of watering during 90 days with field capacity (fc) 50% and 25% and then followed by rewatering. Relative leaf water content (RWC), gas exchange, photosynthetic pigments content, carbohydrate and amino acids content, antioxidant activities and growth were recorded...
April 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28456120/distinct-organ-specific-and-temporal-expression-profiles-of-auxin-related-genes-during-mango-fruitlet-drop
#12
Youlia Denisov, Shani Glick, Tali Zviran, Mazal Ish-Shalom, Adolfo Levin, Adi Faigenboim, Yuval Cohen, Vered Irihimovitch
In mango, fruitlet abscission initiates with a decrease in polar auxin transport through the abscission zone (AZ), triggered by ethylene. To explore the molecular components affecting this process, we initially conducted experiments with developing fruitlet explants in which fruitlet drop was induced by ethephon, and monitored the expression patterns of distinct indole-3-acetic acid (IAA)-related genes, comparing control vs. ethephon-treated pericarp and AZ profiles. Over the examined time period (48 h), the accumulation of MiPIN1 and MiLAX2 IAA-efflux and influx genes decreased in both control and treated tissues...
April 24, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28494393/alterations-in-growth-oxidative-damage-and-metal-uptake-of-five-aromatic-rice-cultivars-under-lead-toxicity
#13
Umair Ashraf, Saddam Hussain, Shakeel Ahmad Anjum, Farhat Abbas, Mohsin Tanveer, Mehmood Ali Noor, Xiangru Tang
Lead (Pb) affects plant growth and its related physio-biochemical functions negatively. The present study investigated the responses of five different fragrant rice cultivars viz., Meixiangzhan (MXZ-2), Xiangyaxiangzhan (XYXZ), Guixiangzhan (GXZ), Basmati-385 (B-385), and Nongxiang-18 (NX-18) to four different Pb concentrations viz., 0, 400, 800 and 1200 μM. Results depicted that Pb toxicity significantly (P < 0.05) reduced the plant height, tillering ability and biomass accumulation by causing oxidative damage to rice plants; nonetheless, a significant variation was found in the sensitivity of rice cultivars to Pb toxicity...
April 21, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28477474/seed-tolerance-to-deterioration-in-arabidopsis-is-affected-by-virus-infection
#14
Eduardo Bueso, Ramón Serrano, Vicente Pallás, Jesús A Sánchez-Navarro
Seed longevity is the period during which the plant seed is able to germinate. This property is strongly influenced by environment conditions experienced by seeds during their formation and storage. In the present study we have analyzed how the biotic stress derived from the infection of Cauliflower mosaic virus (CaMV), Turnip mosaic virus (TuMV), Cucumber mosaic virus (CMV) and Alfalfa mosaic virus (AMV) affects seed tolerance to deterioration measuring germination rates after an accelerated aging treatment...
April 21, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28551417/expression-profiles-of-a-cytoplasmic-male-sterile-line-of-gossypium-harknessii-and-its-fertility-restorer-and-maintainer-lines-revealed-by-rna-seq
#15
Zongfu Han, Yuxiang Qin, Yongsheng Deng, Fanjin Kong, Zongwen Wang, Guifang Shen, Jinghui Wang, Bing Duan, Ruzhong Li
The Gossypium harknessii background cytoplasmic male sterility (CMS) system has been used in cotton hybrid breeding in China. However, the mechanism underlying pollen abortion and fertility restoration in CMS remains to be determined. In this study, we used RNA-seq to identify critical genes and pathways associated with CMS in G. harknessii based CMS lines (588A), the near isogenic restorer lines (588R), and maintainer lines (588B). We performed an assembly of 80,811,676 raw reads into 89,939 high-quality unigenes with an average length of 698 bp...
April 20, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28478373/salinity-stress-induced-alterations-in-antioxidant-metabolism-and-nitrogen-assimilation-in-wheat-triticum-aestivum-l-as-influenced-by-potassium-supplementation
#16
Mohammad Abass Ahanger, R M Agarwal
Experiments were conducted on two wheat (Triticum aestivum L) cultivars exposed to NaCl stress with and without potassium (K) supplementation. Salt stress induced using NaCl caused oxidative stress resulting into enhancement in lipid peroxidation and altered growth as well as yield. Added potassium led to significant improvement in growth having positive effects on the attributes including nitrogen and antioxidant metabolism. NaCl-induced stress triggered the antioxidant defence system nevertheless, the activity of antioxidant enzymes and the content of non-enzymatic antioxidants increased in K fed plants...
April 19, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28432978/cadmium-hampers-salt-tolerance-of-sesuvium-portulacastrum
#17
Mariem Wali, Soledad Martos, Laura Pérez-Martín, Chedly Abdelly, Tahar Ghnaya, Charlotte Poschenrieder, Benet Gunsé
It is well known that salinity reduces cadmium toxicity in halophytes. However, the possible interference of Cd with the mechanisms of salt tolerance is poorly explored. The aim of this study was to see whether Cd affects salt tolerance mechanisms in the halophyte Sesuvium portulacastrum. S. portulacastrum plants obtained from cuttings were grown in hydroponics for 3 weeks and then exposed to low (0.09 mM) or moderate (200 mM) NaCl concentrations, alone or in combination with 25 μM CdCl2. Microscopy observation revealed two strategies of salt tolerance: euhalophytism and secretion of salt by bladder cells...
April 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28432977/effect-of-short-term-zn-pb-or-long-term-multi-metal-stress-on-physiological-and-morphological-parameters-of-metallicolous-and-nonmetallicolous-echium-vulgare-l-populations
#18
Sławomir Dresler, Magdalena Wójciak-Kosior, Ireneusz Sowa, Grzegorz Stanisławski, Izabela Bany, Małgorzata Wójcik
The aim of the study was to determine the response of metallicolous and nonmetallicolous Echium vulgare L. populations to chronic multi-metal (Zn, Pb, Cd) and acute Zn (200, 400 μM) and Pb (30, 60 μM) stress. Three populations of E. vulgare, one from uncontaminated and two from metal-contaminated areas, were studied. Two types of experiments were performed - a short-term hydroponic experiment with acute Zn or Pb stress and a long-term manipulative soil experiment with the use of soils from the sites of origin of the three populations...
April 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28431355/genome-wide-identification-and-analysis-of-the-populus-trichocarpa-tify-gene-family
#19
Yue Wang, Feng Pan, Danmei Chen, Wenyuan Chu, Huanlong Liu, Yan Xiang
The plant-specific TIFY proteins are widely present in land plants and play the important roles in the regulation of plant stress-responses. In this study, we carried out a bioinformatics analysis of TIFY genes in Populus trichocarpa by determining the phylogenetic relationship, chromosomal location and gene structure and expression profiles analysis under stresses. The 24 TIFY genes were identified and classified into four subfamilies (ZML, JAZ, PPD and TIFY). The 24 TIFY genes were irregularly located on 13 of the 19 chromosomes; ten gene pairs were involved in large-scale interchromosomal segmental duplication events; we identified 17 collinear TIFY gene pairs in the Populus trichocarpa genome...
April 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28441627/effect-of-in%C3%A2-vitro-drought-stress-on-phenolic-acids-flavonols-saponins-and-antioxidant-activity-in-agave-salmiana
#20
César A Puente-Garza, Cristina Meza-Miranda, Desiree Ochoa-Martínez, Silverio García-Lara
This work evaluated the effect of in vitro drought stress on morphological characteristics, phenolic compounds, flavonols, saponin content, and antioxidant activity in plantlets of Agave salmiana. Drought stress was induced with polyethylene glycol (PEG) at 0, 10, 20 and 30% w/v in Murashige and Skoog solid medium. The determination of specific flavonols and saponins was achieved via HPLC-DAD and HPLC-ELSD, respectively. Compared with the control, plants grown in 30% PEG showed a change in the width of the leaves and a different color, showing less clarity and more darkening (L = 21...
April 10, 2017: Plant Physiology and Biochemistry: PPB
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