Separation of Chlorophyll Degradation from Other Senescence Processes in Leaves of a Mutant Genotype of Meadow Fescue (Festuca pratensis L.).

abstract：:The fluorescent compound trisodium, 3-hydroxy-5,8,10-pyrenetrisulfonate (PTS) was used to quantify the apoplastic flux through red pine (Pinus resinosa Ait.) root systems-that portion of the total water flux reaching the xylem without ever crossing a semipermeable membrane. Flow was induced by pressure through detoppe...

journal_title：Plant physiology

authors： Hanson PJ,Sucoff EI,Markhart AH

更新日期：1985-01-01 00:00:00

abstract：:RNA silencing in plants serves as a potent antiviral defense mechanism through the action of small interfering RNAs (siRNAs), which direct RNA degradation. siRNAs can be derived directly from the viral genome or via the action of host-encoded RNA-dependent RNA polymerases (RDRs). Plant genomes encode multiple RDRs, an...

journal_title：Plant physiology

authors： Vaistij FE,Jones L

更新日期：2009-03-01 00:00:00

abstract：:Mitochondrial citrate synthase was purified from leaves of Pisum sativum L. cv Progress 9. A three step purification was employed using ATP-Sepharose affinity chromatography which resulted in a 600-fold enrichment. Enzyme activity was assayed spectrophotometrically during greening of etiolated leaves under constant wh...

journal_title：Plant physiology

authors： Unger EA,Vasconcelos AC

更新日期：1989-03-01 00:00:00

abstract：:Retrotransposons and their remnants often constitute more than 50% of higher plant genomes. Although extensively studied in monocot crops such as maize (Zea mays) and rice (Oryza sativa), the impact of retrotransposons on dicot crop genomes is not well documented. Here, we present an analysis of retrotransposons in so...

journal_title：Plant physiology

authors： Wawrzynski A,Ashfield T,Chen NW,Mammadov J,Nguyen A,Podicheti R,Cannon SB,Thareau V,Ameline-Torregrosa C,Cannon E,Chacko B,Couloux A,Dalwani A,Denny R,Deshpande S,Egan AN,Glover N,Howell S,Ilut D,Lai H,Del Campo S

更新日期：2008-12-01 00:00:00

abstract：:ADP-glucose pyrophosphorylase was partially purified from Chlorella vulgaris 11h. 3-Phosphoglycerate activated the enzyme by lowering the Michaelis constant for glucose-1-phosphate (from 0.97 to 0.36 millimolar in the presence of 2 millimolar phosphoglycerate) and ATP (from 0.23 to 0.10 millimolar), as well as increas...

journal_title：Plant physiology

authors： Nakamura Y,Imamura M

更新日期：1985-07-01 00:00:00

abstract：:Analysis of extracts from 6300 (1.2 grams fresh weight) Phaseolus coccineus suspensors by combined gas chromatography-mass spectrometry has demonstrated the presence of five C(19)-gibberellins, GA(1), GA(4), GA(5), GA(6), GA(8), and one C(20)-GA, GA(44). The major GAs present were GA(1) and GA(8). Data are discussed i...

journal_title：Plant physiology

authors： Picciarelli P,Alpi A

更新日期：1986-09-01 00:00:00

abstract：:Maximizing light capture by light-harvesting pigment optimization represents an attractive but challenging strategy to improve photosynthetic efficiency. Here, we report that loss of a previously uncharacterized gene, HIGH PHOTOSYNTHETIC EFFICIENCY1 (HPE1), optimizes light-harvesting pigments, leading to improved phot...

journal_title：Plant physiology

authors： Jin H,Li M,Duan S,Fu M,Dong X,Liu B,Feng D,Wang J,Wang HB

更新日期：2016-11-01 00:00:00

abstract：:Natural variation allows the investigation of both the fundamental functions of genes and their role in local adaptation. As one of the essential macronutrients, sulfur is vital for plant growth and development and also for crop yield and quality. Selenium and sulfur are assimilated by the same process, and although p...

journal_title：Plant physiology

authors： Chao DY,Baraniecka P,Danku J,Koprivova A,Lahner B,Luo H,Yakubova E,Dilkes B,Kopriva S,Salt DE

更新日期：2014-11-01 00:00:00

abstract：:Electron paramagnetic resonance has been used to quantitate reduction of ferric ion bound to hydroxamate siderophores by iron-stressed fungi (DJ Ecker et al. 1982 J Biol Chem 257:8623-8626) and by iron-stressed Chlorella vulgaris (ATCC 11468) (FCT Allnutt, WD Bonner 1984 J Plant Nutr 7: 427-435). Application of this t...

journal_title：Plant physiology

authors： Allnutt FC,Bonner WD

更新日期：1987-04-01 00:00:00

abstract：:In many flowering plants, xyloglucan is a major component of primary cell walls, where it plays an important role in growth regulation. Xyloglucan can be degraded by a suite of exoglycosidases that remove specific sugars. In this work, we show that the xyloglucan backbone, formed by (1→4)-linked β-d-glucopyranosyl res...

journal_title：Plant physiology

authors： Sampedro J,Valdivia ER,Fraga P,Iglesias N,Revilla G,Zarra I

更新日期：2017-02-01 00:00:00

abstract：:Chloroplast movement was induced by partial cell illumination using a high-fluence blue microbeam in light-grown and dark-adapted prothallial cells of the fern Adiantum capillus-veneris. Chloroplasts inside the illuminated area moved out (high-fluence response [HFR]), whereas those outside moved toward the irradiated ...

journal_title：Plant physiology

authors： Kagawa T,Wada M

更新日期：1999-03-01 00:00:00

abstract：:Cells of the red alga Porphyridium cruentum (ATCC 50161) exposed to increasing growth irradiance exhibited up to a three-fold reduction in photosystems I and II (PSI and PSII) and phycobilisomes but little change in the relative numbers of these components. Batch cultures of P. cruentum were grown under four photon fl...

journal_title：Plant physiology

authors： Cunningham FX,Dennenberg RJ,Mustardy L,Jursinic PA,Gantt E

更新日期：1989-11-01 00:00:00

abstract：:Calcium/calmodulin-dependent protein kinase (CCaMK) has been shown to play an important role in abscisic acid (ABA)-induced antioxidant defense and enhance the tolerance of plants to drought stress. However, its downstream molecular events are poorly understood. Here, we identify a NAC transcription factor, ZmNAC84, i...

journal_title：Plant physiology

authors： Zhu Y,Yan J,Liu W,Liu L,Sheng Y,Sun Y,Li Y,Scheller HV,Jiang M,Hou X,Ni L,Zhang A

更新日期：2016-07-01 00:00:00

abstract：:Aminophospholipid ATPases (ALAs) are lipid flippases involved in transporting specific lipids across membrane bilayers. Arabidopsis (Arabidopsis thaliana) contains 12 ALAs in five phylogenetic clusters, including four in cluster 3 (ALA4-ALA7). ALA4/5 and ALA6/7, are expressed primarily in vegetative tissues and pollen...

journal_title：Plant physiology

authors： Davis JA,Pares RB,Bernstein T,McDowell SC,Brown E,Stubrich J,Rosenberg A,Cahoon EB,Cahoon RE,Poulsen LR,Palmgren M,López-Marqués RL,Harper JF

更新日期：2020-04-01 00:00:00

abstract：:The effects of drought on Photosystem II (PSII) fluorescence and photosynthetic electron transport activities were analyzed in cotton. Water stress did not modify the amplitude of leaf variable fluorescence at room temperature in the presence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) nor at 77 K. It is therefo...

journal_title：Plant physiology

authors： Genty B,Briantais JM,Da Silva JB

更新日期：1987-02-01 00:00:00

abstract：:Responses to the plant hormone ethylene are mediated by a family of five receptors in Arabidopsis that act in the absence of ethylene as negative regulators of response pathways. In this study, we examined the rapid kinetics of growth inhibition by ethylene and growth recovery after ethylene withdrawal in hypocotyls o...

journal_title：Plant physiology

authors： Binder BM,O'malley RC,Wang W,Moore JM,Parks BM,Spalding EP,Bleecker AB

更新日期：2004-10-01 00:00:00

abstract：:Poplar (Populus tremula x alba) trees (clone INRA 717-1-B4) were cultivated for 1 month in phytotronic chambers with two different levels of ozone (60 and 120 nL L(-1)). Foliar activities of shikimate dehydrogenase (EC 1.1.1.25), phenylalanine ammonia lyase (EC 4.3.1.5), and cinnamyl alcohol dehydrogenase (CAD, EC 1.1...

journal_title：Plant physiology

authors： Cabané M,Pireaux JC,Léger E,Weber E,Dizengremel P,Pollet B,Lapierre C

更新日期：2004-02-01 00:00:00

abstract：:The assay of acetyl-CoA carboxylase (EC 6.4.1.2) does not follow ideal zero-order kinetics when assayed in a crude extract from wheat (Triticum aestivum L.) germ. Our results show that the lack of ideality is the consequence of contamination by ATPase and adenylate kinase. These enzyme activities generate significant ...

journal_title：Plant physiology

authors： Eastwell KC,Stumpf PK

更新日期：1983-05-01 00:00:00

abstract：:Aspartate aminotransferase (AAT), a key enzyme in the biosynthesis of aspartate and asparagine, occurs as two forms in alfalfa (Medicago sativa L.), AAT-1 and AAT-2. Both forms were purified to near homogeneity, and high titer polyclonal antibodies produced to the native proteins. Alfalfa AAT-1 was purified from root ...

journal_title：Plant physiology

authors： Farnham MW,Miller SS,Griffith SM,Vance CP

更新日期：1990-06-01 00:00:00

abstract：:Isolated soybean leaf mesophyll cells decarboxylated exogenously added [1-(14)C]glycolate and [1-(14)C]glycine in the dark. The rate of CO(2) release from glycine was inhibited over 90% by isonicotinic acid hydrazide and about 80% by KCN, two inhibitors of the glycine to serine plus CO(2) reaction. The release of CO(2...

journal_title：Plant physiology

authors： Oliver DJ

更新日期：1979-12-01 00:00:00

abstract：:Dormancy is a complex evolutionary trait that temporally prevents seed germination, thus allowing seedling growth at a favorable season. High-throughput analyses of transcriptomes have led to significant progress in understanding the molecular regulation of this process, but the role of posttranscriptional mechanisms ...

journal_title：Plant physiology

authors： Basbouss-Serhal I,Soubigou-Taconnat L,Bailly C,Leymarie J

更新日期：2015-07-01 00:00:00

abstract：:High specific radioactivity (26.3 mc/mmole) racemic 2-(14)C-abscisic acid was synthesized. An aliquot of abscisic acid, 1.2 x 10(-4)m in aqueous methanolic solution, was applied to the surface of either a cotyledon or the first true leaf of 8- to 32-day-old cotton seedlings (Gossypium hirsutum L.). After various inter...

journal_title：Plant physiology

authors： Shindy WW,Asmundson CM,Smith OE,Kumamoto J

更新日期：1973-11-01 00:00:00

abstract：:The water-soluble polysaccharides (SEPS) secreted into the medium by suspension-cultured sycamore cells were examined to determine whether the polysaccharides were the same as those present in the walls of sycamore cells. The SEPS were made more amenable to fractionation by treatment with a highly purified alpha-1,4-e...

journal_title：Plant physiology

authors： Stevenson TT,McNeil M,Darvill AG,Albersheim P

更新日期：1986-04-01 00:00:00

abstract：:Plant roots rely on inorganic orthophosphate (Pi) transporters to acquire soluble Pi from soil solutions that exists at micromolar levels in natural ecosystems. Here, we functionally characterized a rice (Oryza sativa) Pi transporter, Os Phosphate Transporter-1;3 (OsPHT1;3), that mediates Pi uptake, translocation, and...

journal_title：Plant physiology

authors： Chang MX,Gu M,Xia YW,Dai XL,Dai CR,Zhang J,Wang SC,Qu HY,Yamaji N,Feng Ma J,Xu GH

更新日期：2019-02-01 00:00:00

abstract：:For an efficient defense response against pathogens, plants must coordinate rapid genetic reprogramming to produce an incompatible interaction. Nitrate Trasnporter2 (NRT2) gene family members are sentinels of nitrate availability. In this study, we present an additional role for NRT2.1 linked to plant resistance again...

journal_title：Plant physiology

authors： Camañes G,Pastor V,Cerezo M,García-Andrade J,Vicedo B,García-Agustín P,Flors V

更新日期：2012-02-01 00:00:00

abstract：:In this study, the pathway of β-citraurin biosynthesis, carotenoid contents and the expression of genes related to carotenoid metabolism were investigated in two varieties of Satsuma mandarin (Citrus unshiu), Yamashitabeni-wase, which accumulates β-citraurin predominantly, and Miyagawa-wase, which does not accumulate ...

journal_title：Plant physiology

authors： Ma G,Zhang L,Matsuta A,Matsutani K,Yamawaki K,Yahata M,Wahyudi A,Motohashi R,Kato M

更新日期：2013-10-01 00:00:00

abstract：:We have found nuclear, recessive mutants in Zea mays L. where assembly of the major chlorophyll (a/b) light-harvesting complex (LHC) was not delayed relative to most other thylakoid protein complexes during thylakoid biogenesis. This contrasts with the normal development of maize chloroplasts (NR Baker, R Leech 1977 P...

journal_title：Plant physiology

authors： Polacco ML,Chang MT,Neuffer MG

更新日期：1985-04-01 00:00:00

abstract：:Phosphoenolpyruvate partially inhibits the accumulation of Ca(2+) in isolated mung bean (Phaseolus aureus Roxb.) mitochondria. Succinate-supported Ca(2+) uptake is twice as sensitive to phosphoenolpyruvate inhibition as is NADH- or malate/pyruvate-supported Ca(2+) uptake. Pyruvate, atractylate, and ATP, but not ITP, r...

journal_title：Plant physiology

authors： Graesser RJ

更新日期：1977-02-01 00:00:00

abstract：:Cytokinins promote expansion of cotyledons detached from seedlings of more than a dozen species. The zeatin-enhanced expansion of cucumber (Cucumis sativus L. cv Marketer) cotyledons was investigated. In addition, whether acid secretion is involved in wall loosening accompanying such accelerated growth was evaluated. ...

journal_title：Plant physiology

authors： Ross CW,Rayle DL

更新日期：1982-11-01 00:00:00

abstract：:Branched-chain amino acids (BCAAs) are synthesized in plants from branched-chain keto acids, but their metabolism is not completely understood. The interface of BCAA metabolism lies with branched-chain aminotransferases (BCAT) that catalyze both the last anabolic step and the first catabolic step. In this study, six B...

journal_title：Plant physiology

authors： Maloney GS,Kochevenko A,Tieman DM,Tohge T,Krieger U,Zamir D,Taylor MG,Fernie AR,Klee HJ

更新日期：2010-07-01 00:00:00