Methylxanthines reversibly inhibit tracheary-element differentiation in suspension cultures of Zinnia elegans L.

abstract：MAIN CONCLUSION:Phloem production and structural development were interlinked with seasonal variation in the primary and secondary metabolites of phloem. Novel microtechniques provided new perspectives on understanding phloem structure and chemistry. To gain new insights into phloem formation in Norway spruce (Picea ab...

journal_title：Planta

authors： Jyske TM,Suuronen JP,Pranovich AV,Laakso T,Watanabe U,Kuroda K,Abe H

更新日期：2015-09-01 00:00:00

abstract：:Arabinogalactan-proteins (AGPs) are present on the surface of all plant cells. AtAGP17, 18 and 19 comprise the lysine-rich AGP subfamily in Arabidopsis and consist of an N-terminal signal peptide, a classical AGP domain interrupted by a small Lys-rich region and a C-terminal glycosylphosphatidylinositol (GPI) anchor a...

journal_title：Planta

authors： Yang J,Showalter AM

更新日期：2007-06-01 00:00:00

abstract：:Limbs of flower buds from Petunia hybrida were investigated for β-glucosidase activity with dihydroflavonol-glucosides and 4-methyl-umbelliferyl-β-D-glucoside as substrates. Dihydroflavonol-glucoside β-glucosidase is localized in the cell wall. This activity has an acid pH optimum and is also active toward 4-methyl-um...

journal_title：Planta

authors： Schram AW,Al EJ,Douma N,Jonsson LM,de Vlaming P,Kooi A,Bennink GJ

更新日期：1982-07-01 00:00:00

abstract：:Photoinhibition of photosynthesis was induced in attached leaves of kiwifruit grown in natural light not exceeding a photon flux density (PFD) of 300 μmol·m(-2)·s(-1), by exposing them to a PFD of 1500 μmol·m(-2)·s(-1). The temperature was held constant, between 5 and 35° C, during the exposure to high light. The kine...

journal_title：Planta

authors： Greer DH,Laing WA,Kipnis T

更新日期：1988-05-01 00:00:00

abstract：:Sequestered particles of phytochrome (SAPs) were partially purified from red-light-irradiated oat coleoptiles. Phytochrome pelletability was enhanced by using buffers containing 10 mM Mg(2+) or high concentrations (0.6-0.8 M) of orthophosphate (Pi). Combining the pelletability of phytochrome in the presence of Mg(2+) ...

journal_title：Planta

authors： Hofmann E,Grimm R,Harter K,Speth V,Schäfer E

更新日期：1991-01-01 00:00:00

abstract：:Embryogenesis occurs in cells from brome grass grown in suspension culture in defined medium. Exogenous hormones are not required. The embryos develop into plants which lack chlorophyll. ...

journal_title：Planta

authors： Gamborg OL,Constabel F,Miller RA

更新日期：1970-12-01 00:00:00

abstract：:Ascorbic acid (AsA) plays an essential role in plants by protecting cells against oxidative damage. GDP-L-galactose phosphorylase (GGP) is the first committed gene for AsA synthesis. Our research examined AsA levels, regulation of GGP gene expression, and how these are related to abiotic stresses in two species of Act...

journal_title：Planta

authors： Li J,Liang D,Li M,Ma F

更新日期：2013-09-01 00:00:00

abstract：:Conchospores from the perennial conchocelis phase of the annual, epiphytic, marine red alga Porphyra nereocystis Anderson, which in nature lives on the large annual kelp Nereocystis luetkeana (Mertens) Postels et Ruprecht, are released in culture only in response to a short-day photoperiod treatment followed by a long...

journal_title：Planta

authors： Dickson LG,Waaland JR

更新日期：1985-09-01 00:00:00

abstract：:Vegetative plants of Sinapis alba L. grown under short days were induced to flower by exposure to one long day or continuous long days. Irrespective of the number of long days, the first flower primordia were initiated by the shoot apical meristem 60 h after the start of the inductive treatment. An indirect histoimmun...

journal_title：Planta

authors： Pierard D,Jacqmard A,Bernier G,Salmon J

更新日期：1980-12-01 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：MAIN CONCLUSION:Six types of lignin-carbohydrate complex (LCC) fractions were isolated from Eucalyptus. The acidic dioxane treatment applied significantly improved the yield of LCCs. The extraction conditions had a limited impact on the LCC structures and linkages. Characterization of the lignin-carbohydrate complex (L...

journal_title：Planta

authors： Zhao BC,Xu JD,Chen BY,Cao XF,Yuan TQ,Wang SF,Charlton A,Sun RC

更新日期：2018-05-01 00:00:00

abstract：:Relative quantum responsivity curves for inhibition of hypocotyl elongation in Sinapis alba L. seedlings previously grown in white light confirm that a marked "end of day" inhibition response can be induced by a monochromatic light treatment (30 min) at the end of the light period. In dark grown seedlings, however, no...

journal_title：Planta

authors： Beggs CJ,Geile W,Holmes MG,Jabben M,Jose AM,Schäfer E

更新日期：1981-02-01 00:00:00

abstract：:Articulated anastomosing laticifers were identified at both light and electron microscopic levels in the stamens of Papaver somniferum L. They were observed associated with the phloem forming a continuous system from the filament into the anther of the stamen. Laticifers, which were comparable in structure to laticife...

journal_title：Planta

authors： Nessler CL,Mahlberg PG

更新日期：1976-01-01 00:00:00

abstract：:It is widely accepted that nitrate but not ammonium improves tolerance of plants to hypoxic stress, although the mechanisms related to this beneficial effect are not well understood. Recently, nitrite derived from nitrate reduction has emerged as the major substrate for the synthesis of nitric oxide (NO), an important...

journal_title：Planta

authors： Oliveira HC,Salgado I,Sodek L

更新日期：2013-01-01 00:00:00

abstract：:In addition to membrane translocation, measured in the dark, it was found that pre-illumination of the chloroplasts resulted in an enhancement of sulfate uptake by 25% and of sulfite uptake by 55% as soon as the concentration of the ion in the incubation medium exceeded 2 mmol l(-1). This amount which is additionally ...

journal_title：Planta

authors： Ziegler I,Hampp R

更新日期：1977-01-01 00:00:00

abstract：:Ferredoxin from the alga Bumilleriopsis filiformis Vischer (Xanthophyceae) is characterized by comparing some of its properties with spinach ferredoxin.It is similar to the known plant ferredoxins in the following points: a) Absorption spectrum. b) Molecular weight. c) Amino acid composition (approx. 100 amino acid re...

journal_title：Planta

authors： Böger P

更新日期：1970-06-01 00:00:00

abstract：:Immunomodulation is a means to modulate an organism's function by antibody production to capture either endogenous or exogenous antigens. We have recently succeeded in obtaining gibberellin (GA)-deficient phenotypes in Arabidopsis thaliana by using anti-bioactive GA antibodies. In this study, a single-chain antibody (...

journal_title：Planta

authors： Urakami E,Yamaguchi I,Asami T,Conrad U,Suzuki Y

更新日期：2008-10-01 00:00:00

abstract：:The enzyme beta-glucuronidase (GUS) is well characterized in animals and microbes. However, this enzyme is not well studied in plants and is widely assumed to be absent in them. In this study we document the ubiquitous presence of GUS in the model plants Arabidopsis thaliana, Oryza sativa, Nicotiana tabacum and Zea ma...

journal_title：Planta

authors： Sudan C,Prakash S,Bhomkar P,Jain S,Bhalla-Sarin N

更新日期：2006-09-01 00:00:00

abstract：:Three cDNAs (PgEMB22, 27 and 29) predicted to encode low-molecular-weight (LMW) heat-shock proteins (HSPs) were cloned and characterized from white spruce [Picea glauca (Moench) Voss] somatic embryo tissues by differentially screening a cotyledonary embryo cDNA library. Clone PgEMB22 is predicted to encode a putative ...

journal_title：Planta

authors： Dong JZ,Dunstan DI

更新日期：1996-01-01 00:00:00

abstract：:Indole-3-acetic acid (IAA) promotes an increase in steady-state heat production by corn (Zea mays L.) coleoptile tissue; this increase is associated with an elevation in aerobic respiration rates. A detailed time dependence of the exothermic response to IAA was obtained using flow calorimetry. The latent period and ma...

journal_title：Planta

authors： Anderson PC,Lovrien RE,Brenner ML

更新日期：1981-05-01 00:00:00

abstract：:Oilseed rape (Brassica napus L.) needs very high nitrogen fertilizer inputs. Significant amounts of this nitrogen are lost during early leaf shedding and are a source of environmental and economic concern. The objective of this study was to investigate whether the remobilization of leaf amino acids could be limiting f...

journal_title：Planta

authors： Tilsner J,Kassner N,Struck C,Lohaus G

更新日期：2005-06-01 00:00:00

abstract：MAIN CONCLUSION:Arabidopsis Mediator subunits 2, 14, 15a, 16, and 25 are required for papillae development on the trichome cell wall surface. Arabidopsis leaf hairs exhibit raised protrusions, termed papillae, on their cell wall surfaces. Here, we show that the glassy hair mutant, glh2, exhibits trichomes with an appro...

journal_title：Planta

authors： Fornero C,Rickerd T,Kirik V

更新日期：2019-04-01 00:00:00

abstract：:Although Arabidopsis is an important system for studying root physiology, the localized growth patterns of its roots have not been well defined, particularly during tropic responses. In order to characterize growth rate profiles along the apex of primary roots of Arabidopsis thaliana (L.) Heynh (ecotype Columbia) we a...

journal_title：Planta

authors： Mullen JL,Ishikawa H,Evans ML

更新日期：1998-11-01 00:00:00

abstract：:Nitrite reductase (EC 1.6.6.4) prepared from pea roots was found to be immunologically indistinguishable from pea leaf nitrite reductase. Comparisons of the pea root enzyme with nitrite reductase from leaf sources showed a close similarity in inhibition properties, light absorption spectrum, and electron paramagnetic ...

journal_title：Planta

authors： Bowsher CG,Emes MJ,Cammack R,Hucklesby DP

更新日期：1988-09-01 00:00:00

abstract：:The effect of external calcium and sodium ion concentrations on the calcium fluxes on the Pelvetia fastigiata De Toni egg was measured. Decreasing external [Ca(2+)] greatly increased the permeability of the eggs to Ca(2+); at 1 mM external Ca(2+) this permeability was 60 times as great as it was at the normal [Ca(2+)]...

journal_title：Planta

authors： Robinson KR

更新日期：1977-01-01 00:00:00

abstract：:Rehydration of desiccated Cuphea seeds results in a rapid morphological change in the seed. Within 20 min thread like epidermal hairs are present on the seed surface. The hairs, which are highly ordered helical structures, are present in the epidermal cells of the desiccated seed. Following emergence the hairs increas...

journal_title：Planta

authors： Stubbs JM,Slabas AR

更新日期：1982-09-01 00:00:00

abstract：:1-Aminocyclopropane-1-carboxylic acid synthase (ACS) catalyzes the rate-limiting step in ethylene biosynthesis during ripening. ACS isozymes are regulated both transcriptionally and post-translationally. However, in banana, an important climacteric fruit, little is known about post-translational regulation of ACS. Her...

journal_title：Planta

authors： Choudhury SR,Roy S,Sengupta DN

更新日期：2012-08-01 00:00:00

abstract：:Centrifugal accelerations of 50-250 g were applied to rhizoids of Chara globularis Thuill. at stimulation angles (alpha) of 5-90 degrees between the acceleration vector and the rhizoid axis. After the start of centrifugation, the statoliths were pressed asymmetrically onto the centrifugal flank of the apical cell wall...

journal_title：Planta

authors： Braun M

更新日期：1996-07-01 00:00:00

abstract：:A central question in biology is to understand how gene expression is precisely regulated to give rise to a variety of forms during the process of development. Epigenetic effects such as DNA methylation or histone modification have been increasingly shown to play a critical role in regulation of genome function. GCN5 ...

journal_title：Planta

authors： Cohen R,Schocken J,Kaldis A,Vlachonasios KE,Hark AT,McCain ER

更新日期：2009-11-01 00:00:00

abstract：:We have constructed a series of deletion mutants of Arabidopsis MAPK kinase kinase (AtMEKK1) and obtained a constitutively active mutant, AtMEKK1Delta166, which lacks in self-inhibitory sequence of N-terminal 166 amino acids but still has substrate specificity. AtMEKK1Delta166 predominantly phosphorylates AtMEK1, an A...

journal_title：Planta

authors： Hadiarto T,Nanmori T,Matsuoka D,Iwasaki T,Sato K,Fukami Y,Azuma T,Yasuda T

更新日期：2006-03-01 00:00:00