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1. A proteomic approach reveals new actors of nodule response to drought in split‐root grown pea plants

Author:
Irar, Sami; González, Esther M.; Arrese‐Igor, Cesar; Marino, Daniel
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 634-645
ISSN:
0031-9317
Subject:
Pisum sativum; RNA-binding proteins; Rhizobium leguminosarum; carbon; crop yield; drought; drought tolerance; flavonoids; genome; metabolism; nitrogen; nitrogen fixation; oxygen; peas; proteomics; signal transduction; sulfur; symbiosis; water potential; water stress
Abstract:
... Drought is considered the more harmful abiotic stress resulting in crops yield loss. Legumes in symbiosis with rhizobia are able to fix atmospheric nitrogen. Biological nitrogen fixation (SNF) is a very sensitive process to drought and limits legumes agricultural productivity. Several factors are known to regulate SNF including oxygen availability to bacteroids, carbon and nitrogen metabolisms; bu ...
DOI:
10.1111/ppl.12214

2. Cadmium exposure affects iron acquisition in barley (Hordeum vulgare) seedlings

Author:
Astolfi, Stefania; Ortolani, Maria R.; Catarcione, Giulio; Paolacci, Anna R.; Cesco, Stefano; Pinton, Roberto; Ciaffi, Mario
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 646-659
ISSN:
0031-9317
Subject:
Hordeum vulgare; barley; biosynthesis; cadmium; gene expression regulation; genes; growth performance; homeostasis; iron; nutrient deficiencies; phytosiderophores; roots; secretion; seedlings; toxicity; transcription (genetics); transporters
Abstract:
... This study addresses the question of the interference between iron (Fe) nutrition and cadmium (Cd) toxicity at the level of growth performance, phytosiderophores (PS) release, micronutrient accumulation and expression of genes involved in Fe homeostasis in barley seedlings, a plant with strategy II‐based response to Fe shortage. Cd exposure induced responses similar to those of genuine Fe deficien ...
DOI:
10.1111/ppl.12207

3. Differential expression of a novel gene EaF82a in green and yellow sectors of variegated Epipremnum aureum leaves is related to uneven distribution of auxin

Author:
Hung, Chiu‐Yueh; Umstead, Makendra L.; Chen, Jianjun; Holliday, Bronwyn M.; Kittur, Farooqahmed S.; Henny, Richard J.; Burkey, Kent O.; Xie, Jiahua
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 749-762
ISSN:
0031-9317
Subject:
Arabidopsis; Epipremnum pinnatum; buds; color; complementary DNA; cytosol; etiolation; gene expression regulation; genes; genetically modified organisms; immunoblotting; indole acetic acid; leaves; promoter regions; proteins; protoplasts; seedlings; tissue culture; tissues
Abstract:
... EaF82, a gene identified in previous studies of the variegated plant Epipremnum aureum, exhibited a unique expression pattern with greater transcript abundance in yellow sectors than green sectors of variegated leaves, but lower abundance in regenerated pale yellow plants than in green plants derived from leaf tissue culture. Studies of its full‐length cDNA and promoter region revealed two members ...
DOI:
10.1111/ppl.12219

4. Heterologous expression of the yeast HAL5 gene in tomato enhances salt tolerance by reducing shoot Na+ accumulation in the long term

Author:
García‐Abellan, Jose O.; Egea, Isabel; Pineda, Benito; Sanchez‐Bel, Paloma; Belver, Andres; Garcia‐Sogo, Begoña; Flores, Francisco B.; Atares, Alejandro; Moreno, Vicente; Bolarin, Maria C.
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 700-713
ISSN:
0031-9317
Subject:
Solanum lycopersicum; gene overexpression; genes; ion transport; leaves; roots; salinity; salt stress; salt tolerance; shoots; sodium; tomatoes; transgenic plants; yeasts
Abstract:
... For salt tolerance to be achieved in the long‐term plants must regulate Na⁺/K⁺homeostasis over time. In this study, we show that the salt tolerance induced by overexpression of the yeast HAL5 gene in tomato (Solanum lycopersicum) was related to a lower leaf Na⁺accumulation in the long term, by reducing Na⁺transport from root to shoot over time regardless of the severity of salt stress. Furthermore ...
DOI:
10.1111/ppl.12217

5. Influence of variation potential on resistance of the photosynthetic machinery to heating in pea

Author:
Sukhov, Vladimir; Surova, Lyubov; Sherstneva, Oksana; Vodeneev, Vladimir
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 773-783
ISSN:
0031-9317
Subject:
peas; action potentials; heat; environmental factors; photosystem II; burning; plant response; photosystem I; Pisum sativum; leaves; stress tolerance
Abstract:
... Electrical signals [action potentials (APs) and variation potentials (VPs)] induced by local stimuli are a mechanism that underlies rapid plant response to environmental factors. Such signals induce a number of functional responses, including changes in photosynthesis. Ultimately, these responses are considered to increase plant resistance to stress factors, but this question has been poorly inves ...
DOI:
10.1111/ppl.12208

6. Isolation of cellular membranes from lignin‐producing tissues of Norway spruce and analysis of redox enzymes

Author:
Kärkönen, Anna; Meisrimler, Claudia‐Nicole; Takahashi, Junko; Väisänen, Enni; Laitinen, Teresa; Jiménez Barboza, Luis Alexis; Holmström, Sami; Salonvaara, Sadette; Wienkoop, Stefanie; Fagerstedt, Kurt V.; Lüthje, Sabine
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 599-616
ISSN:
0031-9317
Subject:
NAD (coenzyme); NADP (coenzyme); Picea abies; Western blotting; antibodies; ascorbate peroxidase; benzoquinones; catalase; chlorophyll; conifers; cytochrome P-450; gels; homogenization; isoelectric focusing; isozymes; juglone; lignification; mass spectrometry; menadione; nitroblue tetrazolium; peroxidase; plasma membrane; polymers; superoxide dismutase; tonoplast; xylem
Abstract:
... There are no earlier reports with successful isolation of plasma membranes from lignin‐forming tissues of conifers. A method to isolate cellular membranes from extracellular lignin‐producing tissue‐cultured cells and developing xylem of Norway spruce was optimized. Modifications to the homogenization buffer were needed to obtain membranes from these phenolics‐rich tissues. Membranes were separated ...
DOI:
10.1111/ppl.12209

7. Leaf architectural, vascular and photosynthetic acclimation to temperature in two biennials

Author:
Muller, Onno; Stewart, Jared J.; Cohu, Christopher M.; Polutchko, Stephanie K.; Demmig‐Adams, Barbara; Adams, William W., III
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 763-772
ISSN:
0031-9317
Subject:
Malva neglecta; Verbascum; acclimation; biennials; cell membranes; chloroplasts; enzymes; leaf area; leaves; mesophyll; phloem; photosynthesis; sugars; summer; temperature; transport proteins; winter
Abstract:
... Acclimation of leaf features to growth temperature was investigated in two biennials (whose life cycle spans summer and winter seasons) using different mechanisms of sugar loading into exporting conduits, Verbascum phoeniceum (employs sugar‐synthesizing enzymes driving symplastic loading through plasmodesmatal wall pores of phloem cells) and Malva neglecta (likely apoplastic loader transporting su ...
DOI:
10.1111/ppl.12226

8. Metabolic profiling of the resurrection plant Haberlea rhodopensis during desiccation and recovery

Author:
Moyankova, Daniela; Mladenov, Petko; Berkov, Strahil; Peshev, Darin; Georgieva, Desislava; Djilianov, Dimitar
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 675-687
ISSN:
0031-9317
Subject:
alpha-tocopherol; antioxidant activity; beta-sitosterol; biochemical pathways; drought tolerance; evolution; gas chromatography; glycosides; high performance liquid chromatography; mass spectrometry; metabolites; metabolomics; models; oxidative stress; phenolic acids; phenols; starch; stress response; sucrose
Abstract:
... Desiccation tolerance is among the most important parameters for crop improvement under changing environments. Resurrection plants are useful models for both theoretical and practical studies. We performed metabolite profiling via gas chromatography coupled with mass spectrometry (GC‐MS) and high‐performance liquid chromatography (HPLC) and analyzed the antioxidant capacity of the endemic resurrec ...
DOI:
10.1111/ppl.12212

9. Nutrient variability in phloem: examining changes in K, Mg, Zn and Fe concentration during grain loading in common wheat (Triticum aestivum)

Author:
Palmer, Lachlan J.; Palmer, Lyndon T.; Rutzke, Michael A.; Graham, Robin D.; Stangoulis, James C. R.
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 729-737
ISSN:
0031-9317
Subject:
Aphidoidea; Triticum aestivum; elemental composition; flowering; genotype; iron; magnesium; mass spectrometry; nutrient content; nutrients; phloem; quantitative analysis; seeds; wheat; zinc
Abstract:
... In wheat, nutrients are transported to seeds via the phloem yet access to this vascular tissue for exudate collection and quantitative analysis of elemental composition is difficult. The purest phloem is collected through the use of aphid stylectomy with volumes of exudate collected normally in the range of 20–500 nl. In this work a new method using inductively coupled plasma mass spectroscopy (IC ...
DOI:
10.1111/ppl.12211

10. Opposite variations in fumarate and malate dominate metabolic phenotypes of Arabidopsis salicylate mutants with abnormal biomass under chilling

Author:
Scott, Ian M.; Ward, Jane L.; Miller, Sonia J.; Beale, Michael H.
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 660-674
ISSN:
0031-9317
Subject:
Arabidopsis thaliana; biomass; cold treatment; correlation; genotype; light intensity; malates; metabolism; metabolome; models; mutants; nuclear magnetic resonance spectroscopy; phenotype; salicylic acid; shoots
Abstract:
... In chilling conditions (5°C), salicylic acid (SA)‐deficient mutants (sid2, eds5 and NahG) of Arabidopsis thaliana produced more biomass than wild type (Col‐0), whereas the SA overproducer cpr1 was extremely stunted. The hypothesis that these phenotypes were reflected in metabolism was explored using 600 MHz¹H nuclear magnetic resonance (NMR) analysis of unfractionated polar shoot extracts. Biomass ...
DOI:
10.1111/ppl.12210

11. Physiological responses of spring rapeseed (Brassica napus) to red/far‐red ratios and irradiance during pre‐ and post‐flowering stages

Author:
Rondanini, Deborah P.; del Pilar Vilariño, Maria; Roberts, Marcos E.; Polosa, Marina A.; Botto, Javier F.
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 784-794
ISSN:
0031-9317
Subject:
inflorescences; flowering; light intensity; wheat; Brassica napus; field experimentation; rapeseed; shoots; indeterminate growth; stems; carbohydrates; genotype; grain yield; petioles; stem elongation; corn; physiological response; harvest index; dry matter partitioning; vegetative growth; lipid content; branching; crops
Abstract:
... Early shade signals promote the shade avoidance syndrome (SAS) which causes, among others, petiole and shoot elongation and upward leaf position. In spite of its relevance, these photomorphogenic responses have not been deeply studied in rapeseed (Brassica napus). In contrast to other crops like maize and wheat, rapeseed has a complex developmental phenotypic pattern as it evolves from an initial ...
DOI:
10.1111/ppl.12227

12. Salt stress‐induced seedling growth inhibition coincides with differential distribution of serotonin and melatonin in sunflower seedling roots and cotyledons

Author:
Mukherjee, Soumya; David, Anisha; Yadav, Sunita; Baluška, František; Bhatla, Satish Chander
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 714-728
ISSN:
0031-9317
Subject:
Helianthus annuus; acetylserotonin O-methyltransferase; auxins; biosynthesis; cortex; cotyledons; growth retardation; high performance liquid chromatography; hypocotyls; immunohistochemistry; lipid bodies; melatonin; morphogenesis; root growth; roots; salt stress; seedling growth; seedlings; serotonin; sodium chloride; tryptophan; vascular bundles
Abstract:
... Indoleamines regulate a variety of physiological functions during the growth, morphogenesis and stress‐induced responses in plants. Present investigations report the effect of NaCl stress on endogenous serotonin and melatonin accumulation and their differential spatial distribution in sunflower (Helianthus annuus) seedling roots and cotyledons using HPLC and immunohistochemical techniques, respect ...
DOI:
10.1111/ppl.12218

13. Scanning ion‐selective electrode technique and X‐ray microanalysis provide direct evidence of contrasting Na+ transport ability from root to shoot in salt‐sensitive cucumber and salt‐tolerant pumpkin under NaCl stress

Author:
Lei, Bo; Huang, Yuan; Sun, Jingyu; Xie, Junjun; Niu, Mengliang; Liu, Zhixiong; Fan, Molin; Bie, Zhilong
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 738-748
ISSN:
0031-9317
Subject:
H-transporting ATP synthase; X-radiation; cortex; cucumbers; plasma membrane; pumpkins; roots; rootstocks; salt tolerance; shoots; sodium; sodium chloride; sodium-hydrogen antiporter; specific ion electrodes; stele
Abstract:
... Grafting onto salt‐tolerant pumpkin rootstock can increase cucumber salt tolerance. Previous studies have suggested that this can be attributed to pumpkin roots with higher capacity to limit the transport of Na⁺to the shoot than cucumber roots. However, the mechanism remains unclear. This study investigated the transport of Na⁺in salt‐tolerant pumpkin and salt‐sensitive cucumber plants under high ...
DOI:
10.1111/ppl.12223

14. Sterol partitioning by HMGR and DXR for routing intermediates toward withanolide biosynthesis

Author:
Singh, Shefali; Pal, Shaifali; Shanker, Karuna; Chanotiya, Chandan Singh; Gupta, Madan Mohan; Dwivedi, Upendra Nath; Shasany, Ajit Kumar
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 617-633
ISSN:
0031-9317
Subject:
RNA interference; Withania somnifera; biosynthesis; campesterol; carbon; cholesterol; gene overexpression; genetically modified organisms; hydroxymethylglutaryl-CoA reductases; leaves; stigmasterol; tobacco; transgenes
Abstract:
... Withanolides biosynthesis in the plant Withania somnifera (L.) Dunal is hypothesized to be diverged from sterol pathway at the level of 24‐methylene cholesterol. The conversion and translocation of intermediates for sterols and withanolides are yet to be characterized in this plant. To understand the influence of mevalonate (MVA) and 2‐C‐methyl‐d‐erythritol‐4‐phosphate (MEP) pathways on sterols an ...
DOI:
10.1111/ppl.12213

15. Stomatal malfunctioning under low VPD conditions: induced by alterations in stomatal morphology and leaf anatomy or in the ABA signaling?

Author:
Aliniaeifard, Sasan; Malcolm Matamoros, Priscila; van Meeteren, Uulke
Source:
Physiologia plantarum 2014 v.152 no.4 pp. 688-699
ISSN:
0031-9317
Subject:
stomatal movement; stomatal conductance; exposure duration; faba beans; abscisic acid; stomata; spraying
Abstract:
... Exposing plants to low VPD reduces leaf capacity to maintain adequate water status thereafter. To find the impact of VPD on functioning of stomata, stomatal morphology and leaf anatomy, fava bean plants were grown at low (L, 0.23 kPa) or moderate (M, 1.17 kPa) VPDs and some plants that developed their leaves at moderate VPD were then transferred for 4 days to low VPD (M→L). Part of the M→L‐plants ...
DOI:
10.1111/ppl.12216

16. A low K⁺ signal is required for functional high‐affinity K⁺ uptake through HAK5 transporters

Author:
Rubio, Francisco; Fon, Mario; Ródenas, Reyes; Nieves‐Cordones, Manuel; Alemán, Fernando; Rivero, Rosa M.; Martínez, Vicente
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 558-570
ISSN:
0031-9317
Subject:
Arabidopsis thaliana; Solanum lycopersicum; environmental factors; genes; plant adaptation; plasma membrane; potassium; roots; transporters
Abstract:
... The high‐affinity K⁺ transporter HAK5 is a key system for root K⁺ uptake and, under very low external K⁺, the only one capable of supplying K⁺ to the plant. Functional HAK5‐mediated K⁺ uptake should be tightly regulated for plant adaptation to different environmental conditions. Thus, it has been described that the gene encoding the transporter is transcriptionally regulated, being highly induced ...
DOI:
10.1111/ppl.12205

17. A novel P700 redox kinetics probe for rapid, non‐intrusive and whole‐tissue determination of photosystem II functionality, and the stoichiometry of the two photosystems in vivo

Author:
Jia, Husen; Dwyer, Simon A.; Fan, Da‐Yong; Han, Yaqin; Badger, Murray R.; von Caemmerer, Susanne; Chow, Wah Soon
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 403-413
ISSN:
0031-9317
Subject:
Arabidopsis thaliana; Spinacia oleracea; absorbance; electrons; equipment; leaves; mutants; oxygen; photosystem I; photosystem II; proteins; spinach; stoichiometry
Abstract:
... We sought a rapid, non‐intrusive, whole‐tissue measure of the functional photosystem II (PS II) content in leaves. Summation of electrons, delivered by a single‐turnover flash to P700⁺ (oxidized PS I primary donor) in continuous background far‐red light, gave a parameter S in absorbance units after taking into account an experimentally determined basal electron flux that affects P700 redox kinetic ...
DOI:
10.1111/ppl.12235
PubMed:
24862879

18. Characterization of two tartary buckwheat R2R3‐MYB transcription factors and their regulation of proanthocyanidin biosynthesis

Author:
Bai, Yue‐Chen; Li, Cheng‐Lei; Zhang, Jin‐Wen; Li, Shuang‐Jiang; Luo, Xiao‐Peng; Yao, Hui‐Peng; Chen, Hui; Zhao, Hai‐Xia; Park, Sang‐Un; Wu, Qi
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 431-440
ISSN:
0031-9317
Subject:
anthocyanins; transcription factors; Fagopyrum tataricum; transcriptional activation; biosynthesis; proanthocyanidins; gene overexpression; bioinformatics; flowers; transcription (genetics); Nicotiana tabacum; genes; rutin; buckwheat
Abstract:
... Tartary buckwheat (Fagopyrum tataricum Gaertn.) contains high concentrations of flavonoids. The flavonoids are mainly represented by rutin, anthocyanins and proanthocyanins in tartary buckwheat. R2R3‐type MYB transcription factors (TFs) play key roles in the transcriptional regulation of the flavonoid biosynthetic pathway. In this study, two TF genes, FtMYB1 and FtMYB2, were isolated from F. tatar ...
DOI:
10.1111/ppl.12199
PubMed:
24730512

19. Deciphering the mechanisms involved in Portulaca oleracea (C₄) response to drought: metabolic changes including crassulacean acid‐like metabolism induction and reversal upon re‐watering

Author:
D'Andrea, Rodrigo Matías; Andreo, Carlos Santiago; Lara, María Valeria
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 414-430
ISSN:
0031-9317
Subject:
C4 plants; Crassulacean acid metabolism; Portulaca oleracea; antioxidants; arginase; betalains; carbon; carbon dioxide; chlorophyll; drought; energy; flavonoids; fluorescence; free amino acids; glycerol; malates; metabolites; pinitol; polyamines; urea; urease
Abstract:
... Portulaca oleracea is a C₄ plant; however, under drought it can change its carbon fixation metabolism into a crassulacean acid metabolism (CAM)‐like one. While the C₃‐CAM shift is well known, the C₄‐CAM transition has only been described in Portulaca. Here, a CAM‐like metabolism was induced in P. oleracea by drought and then reversed by re‐watering. Physiological and biochemical approaches were un ...
DOI:
10.1111/ppl.12194

20. Epidermal coumaroyl anthocyanins protect sweet basil against excess light stress: multiple consequences of light attenuation

Author:
Tattini, Massimiliano; Landi, Marco; Brunetti, Cecilia; Giordano, Cristiana; Remorini, Damiano; Gould, Kevin S.; Guidi, Lucia
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 585-598
ISSN:
0031-9317
Subject:
Ocimum basilicum; anthocyanins; attitudes and opinions; basil; biomass production; biosynthesis; carbon; cultivars; energy; leaves; light intensity; lutein; photostability; photosystem II; solar radiation
Abstract:
... The putative photoprotective role of foliar anthocyanins continues to attract heated debate. Strikingly different experimental set‐ups coupled with a poor knowledge of anthocyanin identity have likely contributed to such disparate opinions. Here, the photosynthetic responses to 30 or 100% solar irradiance were compared in two cultivars of basil, the green‐leafed Tigullio (TG) and the purple‐leafed ...
DOI:
10.1111/ppl.12201
PubMed:
24684471