Studies on flower longevity in Digitalis : The role of ethylene in corolla abscission.

abstract：:Roots of marigold (Tagetes patula L.) accumulate thiophenes, heterocyclic sulfurous compounds with strong biocidal activity. In detached roots cultured in vitro, the thiophene content was 5 μmol·(g fresh weight)(-1) which is 25-times higher than in roots attached to the plant. In roots derived from tissues transformed...

journal_title：Planta

authors： Croes AF,van den Berg AJ,Bosveld M,Breteler H,Wullems GJ

更新日期：1989-08-01 00:00:00

abstract：:A monoclonal antibody produced to abscisic acid (ABA) has been characterised and the development of a radioimmunoassay (RIA) for ABA using the antibody is described. The antibody had a high selectivity for the free acid of (S)-cis, trans-ABA. Using the antibody, ABA could be assayed reliably in the RIA over a range fr...

journal_title：Planta

authors： Quarrie SA,Whitford PN,Appleford NE,Wang TL,Cook SK,Henson IE,Loveys BR

更新日期：1988-03-01 00:00:00

abstract：:Experiments have been carried out to determine the basis for the dependence of chloroplast pigment synthesis on protein synthesis in dark-grown cells of Euglena gracilis greening in the light. The complete inhibition of chlorophyll synthesis brought about by actidione (10 μg/ml) when added half way through the greenin...

journal_title：Planta

authors： Kirk JT

更新日期：1967-06-01 00:00:00

abstract：:The appearance of glutamine synthetase (GS. EC 6.3.1.2) in response to light and nitrogen (NO 3 (-) , NH 4 (+) ) was studied in the organs (roots, hypocotyl, cotyledonary whorl) of the Scots pine (Pinus sylvestris L.) seedling. Although GS activity was found to be mainly (> 80%) located in the whorl where it increased...

journal_title：Planta

authors： Elmlinger MW,Mohr H

更新日期：1992-10-01 00:00:00

abstract：:Individual leaves of eastern cottonwood (Populus deltoides), representing an ontogenetic series from leaf plastochron index 0.0 to 8.0, were fed (14)CO2 photosynthetically and then harvested at times ranging from 15 to 1440 min. The lamina of each fed leaf was sectioned from tip to base into 5 parts, and each part was...

journal_title：Planta

authors： Larson PR,Isebrands JG,Dickson RE

更新日期：1972-12-01 00:00:00

abstract：:Suspension-cultured cells of mangrove [Bruguiera sexangula (Lour.) Poir.] showed a rapid increase in vacuolar volume under salt stress, although there was no change in the cell volume. The rapid increase in the vacuolar volume was an active process, which followed the activation of the tonoplast H(+)-ATPase and the va...

journal_title：Planta

authors： Mimura T,Kura-Hotta M,Tsujimura T,Ohnishi M,Miura M,Okazaki Y,Mimura M,Maeshima M,Washitani-Nemoto S

更新日期：2003-01-01 00:00:00

abstract：:Plastoglobules are lipid droplets present in all plastid types. In chloroplasts, they are connected to the thylakoid membrane by the outer lipid half-bilayer. The plastoglobule core is composed of neutral lipids most prominently the prenylquinones, triacylglycerols, fatty acid phytyl esters but likely also unknown com...

journal_title：Planta

authors： Besagni C,Kessler F

更新日期：2013-02-01 00:00:00

abstract：:Compared with our knowledge of senescence in annuals and biennials, little is known about age-related changes in perennials. To get new insights into the mechanisms underlying aging in perennials, we measured oxidative stress markers in leaves and organelles, together with abscisic acid levels in leaves of 2- and 7-ye...

journal_title：Planta

authors： Munné-Bosch S,Lalueza P

更新日期：2007-03-01 00:00:00

abstract：:1-O-Sinapoyl-β-glucose:l-malate O-sinapoyltransferase (SMT; EC 2.3.1.) from cotyledons of red radish (Raphanus sativus L. var. sativus) was purified to apparent homogeneity with a 2100-fold enrichment and a 4% recovery. Apparent Mrs of 52 and 51, respectively, were determined by gel filtration and by sodium dodecyl su...

journal_title：Planta

authors： Gräwe W,Bachhuber P,Mock HP,Strack D

更新日期：1992-05-01 00:00:00

abstract：MAIN CONCLUSION:The triggers of genetic instability in barley homeotic double mutants are tweaky spike -type mutations associated with an auxin imbalance in separate spike phytomeres. Barley homeotic tweaky spike;Hooded (tw;Hd) double mutants are characterized by an inherited instability of spike and flower development...

journal_title：Planta

authors： Šiukšta R,Vaitkūnienė V,Rančelis V

更新日期：2018-02-01 00:00:00

abstract：MAIN CONCLUSION:Dysfunctional mutation of OsNDPK4 resulted in severe defects in root development of rice. However, the resistance of Osndpk4 against bacterial blight was significantly enhanced. Nucleoside diphosphate kinases (NDPKs) are an evolutionarily conserved family of important enzymes balancing the energy curren...

journal_title：Planta

authors： Ye J,Ding W,Chen Y,Zhu X,Sun J,Zheng W,Zhang B,Zhu S

更新日期：2020-03-09 00:00:00

abstract：:Free porphyrins and their magnesium complexes, including chlorophylls, are potent photo-sensitizers. Plants usually accumulate these compounds bound to proteins together with protective compounds like carotenoids. Besides their protective role, carotenoids can play a structural role in these complexes. To analyze the ...

journal_title：Planta

authors： La Rocca N,Rascio N,Oster U,Rüdiger W

更新日期：2007-03-01 00:00:00

abstract：:Sieve tube "slime" is probably fibrillar as suggested by other workers. The granular material seen in electron micrographs of sieve tubes "fixed" with potassium permanganate is mostly a precipitate produced by the reaction of the permanganate with the sieve tube contents, particularly with sucrose, and with reagents u...

journal_title：Planta

authors： Johnson RP

更新日期：1966-03-01 00:00:00

abstract：:In Arabidopsis, damage to the superficial acropetal polar auxin transport (PAT) inhibits generative but not vegetative organ initiation. In order to verify whether in a vegetative phase auxin can be transported to the meristem in a different way, the research on wild-type and plants with defective PAT was performed. D...

journal_title：Planta

authors： Banasiak A

更新日期：2011-01-01 00:00:00

abstract：:Breakdown of chlorophylls in attached senescing sycamore leaves held in darkness was significantly less over a 14-d period than that occurring in leaves exposed to natural light. Chlorophyll a declined more rapidly than chlorophyll b in both situations, the stability of the latter being particularly increased in darkn...

journal_title：Planta

authors： Maunders MJ,Brown SB

更新日期：1983-08-01 00:00:00

abstract：:Two types of auxin-binding sites (sites I and II) in membranes from maize (Zea mays L.) coleoptiles were characterized. Site I was a protein with a relative molecular mass of 21 000, and the distribution of site I protein on sucrose density gradient fractionation coincided with that of NADH-cytochrome-c reductase (EC ...

journal_title：Planta

authors： Shimomura S,Inohara N,Fukui T,Futai M

更新日期：1988-10-01 00:00:00

abstract：:Influx of (45)Ca into internodal cells of Chara corallina has been measured, using short uptake times, and a wash in ice-cold La(3+)-containing pondwater after the labelling period to overcome the difficulty of distinguishing extracellular tracer from that in the cell. Over 5-15 min the uptake was linear with time, th...

journal_title：Planta

authors： Macrobbie EA,Banfield J

更新日期：1988-11-01 00:00:00

abstract：:Only 11% of the total peroxidase activity in a root tip homogenate of Zea mays (L.) was sedimentable. The majority of sedimentable activity was bound to membrane fractions with which acid hydrolases were also associated.Peroxidase activity was released from a cell wall fraction exhaustively washed using homogenization...

journal_title：Planta

authors： Parish RW

更新日期：1975-01-01 00:00:00

abstract：:Using partially purified sedoheptulose-1,7-bisphosphatase from spinach (Spinacia oleracea L.) chloroplasts the effects of metabolites on the dithiothreitoland Mg(2+)-activated enzyme were investigated. A screening of most of the intermediates of the Calvin cycle and the photorespiratory pathway showed that physiologic...

journal_title：Planta

authors： Schimkat D,Heineke D,Heldt HW

更新日期：1990-04-01 00:00:00

abstract：:During sexual differentiation, Chlamydomonas reinhardtii changes its chemotactic behavior in response to ammonium. Just like gamete formation, the change in chemotaxis mode is controlled by the sequential action of two environmental cues, removal of ammonium or nitrate from the medium and light. Thus, vegetative cells...

journal_title：Planta

authors： Ermilova EV,Zalutskaya ZM,Huang K,Beck CF

更新日期：2004-07-01 00:00:00

abstract：:In an optimized liquid medium containing auxin and cytokinin, mesophyll cells isolated from Zinnia elegans L. seedlings can be induced to differentiate into tracheary elements (TEs) at high frequency. However, it is known that buffering the medium at neutral pH severely suppresses TE differentiation. In the process of...

journal_title：Planta

authors： Shinohara N,Sugiyama M,Fukuda H

更新日期：2006-07-01 00:00:00

abstract：:In order to survive sunlight in the absence of water, desiccation-tolerant green plants need to be protected against photooxidation. During drying of the chlorolichen Cladonia rangiformis and the cyanolichen Peltigera neckeri, chlorophyll fluorescence decreased and stable light-dependent charge separation in reaction ...

journal_title：Planta

authors： Heber U

更新日期：2008-09-01 00:00:00

abstract：:Three lines of evidence indicate a connection between high spermidine levels and floral initiation in thin-layer tissue cultures of Wisconsin-38 tobacco (Nicotiana tabacum L.). (1) Spermidine levels are much higher in floral buds than in vegetative buds. (2) Inhibition of spermidine synthesis by cyclohexylamine preven...

journal_title：Planta

authors： Kaur-Sawhney R,Tiburcio AF,Galston AW

更新日期：1988-02-01 00:00:00

abstract：:Eukaryotic genomes harbor mobile genetic elements known as long terminal repeat (LTR) retrotransposons. LTR retrotransposons are closely related to the infectious and endogenous retroviruses. The viral envelope (env) gene of the retroviruses, which is responsible for their infective properties, distinguishes them from...

journal_title：Planta

authors： Abdel Ghany AG,Zaki EA

更新日期：2002-12-01 00:00:00

abstract：:The inactivation temperature for Hill activity and for the long-lived delayed fluorescence of isolated Pisum sativum L. chloroplasts was found to depend on pH, the maximal value being in the pH region 5-7. Salts increase the inactivation temperature by 4-7°C. Effects of D2O and some other substances that modify the th...

journal_title：Planta

authors： Venediktov PS,Krivoshejeva AA

更新日期：1984-03-01 00:00:00

abstract：:MicroRNAs (miRNAs) are emerging as essential regulators of biological processes. Somatic embryogenesis is one of the most important techniques for gymnosperm-breeding programs, but there is little understanding of its underlying mechanism. To investigate the roles of miRNAs during somatic embryogenesis in larch, we co...

journal_title：Planta

authors： Zhang J,Zhang S,Han S,Wu T,Li X,Li W,Qi L

更新日期：2012-08-01 00:00:00

abstract：:Gibberellic acid (GA3), indole-3-acetic acid (IAA) or kinetin ((6)N-furfurylaminopurine) applied to the apical regions of decapitated stems of derooted Phaseolus vulgaris plants, promoted (14)C-photosynthate transport to the site of hormone application. Hormonal promotion of acropetal photosynthate transport was assoc...

journal_title：Planta

authors： Hayes PM,Patrick JW

更新日期：1985-11-01 00:00:00

abstract：:In both the seminal axis and lateral roots of Cucurbita pepo L. the formation of large central xylem elements and the commencement of secondary cambial activity occur 10-20 cm from the root tip. Concomitant with or slightly preceding these developments there are changes in the structure of the walls of endodermal cell...

journal_title：Planta

authors： Harrison-Murray RS,Clarkson DT

更新日期：1973-03-01 00:00:00

abstract：:Addition of an osmoticum (-12 bars) to the rooting medium of sunflowers (Helianthus annuus L.) caused an increase in the level of abscisic acid (ABA) present in xylem exudate subsequently collected from cut shoots. Using tall and dwarf plants it was shown that there was a time lag in the appearance of increased levels...

journal_title：Planta

authors： Hoad GV

更新日期：1975-01-01 00:00:00

abstract：:The dye FM1-43 was used alone or in combination with measurements of the membrane capacitance (Cm) to monitor membrane changes in protoplasts from Vicia faba L. guard cells. Confocal images of protoplasts incubated with FM1-43 (10 microM) at constant ambient osmotic pressure (pi omicron) revealed in confocal images a ...

journal_title：Planta

authors： Kubitscheck U,Homann U,Thiel G

更新日期：2000-02-01 00:00:00