Abstract：
:The growth of Lemna minor in darkness is log-linear, at a much reduced rate compared to growth in white or red light. This rate of frond production in darkness is stimulated by kinetin, yeast extract, and thiamine either in green plants transferred directly from the light or in plants which had been grown in the dark for 54 days. (Fig. 1).The magnitude of the stimulation of frond production by interruption of darkgrowth with red light (Fig. 2) is smaller in green than in etiolated plants, and is shown to depend upon the length of time that initially green plants were held in darkness (Fig. 4, Table 2). The stimulation of frond production in either green or etiolated plants does, however, obey the reciprocity law (Fig. 3).The stimulation by red light can be fully and repeatedly nullified by far red light only in etiolated plants, but the efficiency of nullification of the red effect by far red seems to increase in green plants with increasing sets of red + far red exposures (Fig. 5).As the dark-interval between red and far red exposures is lengthened, the efficiency of nullification is lessened significantly for etiolated plants only after 30 min (Fig. 6).
journal_name
Plantajournal_title
Plantaauthors
Frick H,Mohr Hdoi
10.1007/BF00387090subject
Has Abstractpub_date
1972-09-01 00:00:00pages
281-92issue
3eissn
0032-0935issn
1432-2048journal_volume
109pub_type
杂志文章相关文献
PLANTA文献大全abstract：:A gibberellin (GA) C-20 hydroxylase that catalyses the conversion of GA53 to GA44 was purified from developing pea embryos by ammonium-sulfate precipitation, gel filtration and anion-exchange column chromatography. The purification was about 270-fold and 15% of the enzymic activity was recovered. The relative molecula...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00393691
更新日期：1989-09-01 00:00:00
abstract：:Transamination between γ-aminobutyrate and α-ketoglutarate provides a pathway for the utilization of γ-aminobutyrate in fruit-bodies of Agaricus bisporus Lge. This reaction leads to the formation of succinic semialdehyde, a metabolic intermediate in the metabolism of γ-aminobutyrate to succinate in the cell. γ-aminobu...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00387833
更新日期：1976-01-01 00:00:00
abstract：:Abscisic acid (ABA) is an important stress phytohormone that plays an essential role in mediating the signaling networks associated with plant responses to various abiotic stresses. In the present study, we isolated a gene CrNCED1 encoding the rate-limiting enzyme of ABA synthesis, 9-cis-epoxycarotenoid dioxygenase (N...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-013-1963-4
更新日期：2014-01-01 00:00:00
abstract：MAIN CONCLUSION:Jasmonic acid positively modulates vitamin E accumulation, but the latter can also partly influence the capacity to accumulate the jasmonic acid precursor, 12-oxo-phytodienoic acid, in white-leaved rockrose (Cistus albidus L.) plants growing in their natural habitat. This study suggests a bidirectional ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-021-03570-y
更新日期：2021-01-18 00:00:00
abstract：:Global environmental change and ongoing biological invasions are the two prominent ecological issues threatening biodiversity worldwide, and investigations of their interaction will aid to predict plant invasions and inform better management strategies in the future. In this study, invasive Eupatorium adenophorum and ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-012-1678-y
更新日期：2012-10-01 00:00:00
abstract：:The (12)CO2- and (14)CO2-exchange of illuminated corn leaf discs were measured at normal (21%) and low (1%) oxygen. After periods of exposure to (14)CO2 or to (14)CO2 followed by (12)CO2, the discs were killed and the specific activities of some metabolites were determined. At both O2 concentrations the specific activ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00384921
更新日期：1974-01-01 00:00:00
abstract：:Fatty acid synthesis was studied in successive leaf sections from the base to the tip of developing barley (Hordeum vulgare L.), maize (Zea mays L.), rye grass (Lolium perenne L.) and wheat (Triticum aestivium L.) leaves. The basal regions of the leaves had the lowest rates of fatty acid synthesis and accumulated smal...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00386815
更新日期：1978-01-01 00:00:00
abstract：:In order to investigate the role of acetyl CoA carboxylase (ACC) in the regulation of fatty-acid biosynthesis in chloroplasts, the activities and relative amounts of the enzyme have been measured in the tissue of wheat (Triticum aestivum L.) leaves undergoing development and cellular differentiation. The total activit...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00392296
更新日期：1987-08-01 00:00:00
abstract：:Germination and seedling establishment follows a distinct pattern which is partly controlled by hormones. Roots have high levels of cytokinins. By quantifying the fluctuations in endogenous cytokinins over time, further insight may be gained into the role of cytokinins during germination and seedling establishment. Ra...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-008-0699-z
更新日期：2008-05-01 00:00:00
abstract：MAIN CONCLUSION:Our study demonstrated that symplasmic communication between Sedum acre seed compartments and the embryo proper is not uniform. The presence of plasmodesmata (PD) constitutes the structural basis for information exchange between cells, and symplasmic communication is involved in the regulation of cell d...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-016-2619-y
更新日期：2017-03-01 00:00:00
abstract：:The role of purine and pyrimidine ribosides, nucleotides and substituted xanthines in the differentiation of chloronema filaments in suspension cultures of protonema of the moss Funaria hygrometrica Hedw. has been examined. Cyclic adenosine-3',5'-monophosphate (cAMP) and mono-and dibutyryl cAMP evoked the maximum resp...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00391574
更新日期：1979-01-01 00:00:00
abstract：:The cell walls of Chlamydomonas gametes are multilayered structures supported on frameworks of polypeptides extending from the plasma membrane. The wall-polypeptide catalogue reported by Monk et al. (1983, Planta 158, 517-533) and extended by U.W. Goodenough et al. (1986, J. Cell Biol. 103, 405-417) was re-evaluated b...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00397650
更新日期：1988-12-01 00:00:00
abstract：:Biphenyls are unique phytoalexins produced by plants belonging to Pyrinae, a subtribe of the economically important Rosaceae family. The formation of aucuparin, a well-known biphenyl, is induced by yeast extract (YE) in cell cultures of Sorbus aucuparia. However, the molecular mechanism underlying YE-induced activatio...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-011-1545-2
更新日期：2012-01-01 00:00:00
abstract：:A group of frequent cDNA clones from a young-leaf cDNA library was found to code for a homologue of S-ribonucleases (S-RNases) involved in gametophytic incompatibility and the so-called S-like RNases active in flowers and in vegetative tissues. The derived amino acid sequence starts with a signal peptide and has a 27-...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s004250050046
更新日期：2000-03-01 00:00:00
abstract：:The concentration of cytoplasmic free calcium ([Ca(2+)](cyt)) required to close higher plant plasmodesmata was investigated using corn (Zea mays L. cv. Black Mexican Sweet) suspension-culture cells. Physiological elevations of [Ca(2+)](cyt) were applied by cold treatment, and ion injection was also used to increase [C...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/PL00008141
更新日期：2000-01-01 00:00:00
abstract：:A study has been made of the RNA and protein synthesising systems of wheat embryos isolated from seed lots having high viability but differing in vigour. The rate of RNA and protein synthesis in wheat embryos during the early hours of germination is related to the vigour of the seed lot. The imposition of a stress fac...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00385609
更新日期：1980-11-01 00:00:00
abstract：:The cuticle is a complex structure of soluble lipids, lipid polymers and polysaccharides. In addition to its functions to reduce water loss and provide a protective barrier, its mechanical properties may be significant to plant growth and development. We investigated the cuticle of Cirsium horridulum Michx. because of...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s004250100576
更新日期：2001-10-01 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
pub_type： 杂志文章
doi：10.1007/s00425-004-1446-8
更新日期：2005-06-01 00:00:00
abstract：:Peptone is more effective than nitrate as a nitrogen source for heterotrophic cultures of Chlorella vulgaris (Emerson strain). It allows the production of an increased amount of algal material and supports an enhanced rate of cell division. Peptone-supplied heterotrophic cultures have a significantly higher content of...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00387131
更新日期：1967-06-01 00:00:00
abstract：:Four mutants of maize (Zea mays L.) defective in chlorophyll biosynthesis have been analyzed with regard to the sites of their lesions and their effects on chloroplast development. Two yellow mutants, which accumulate no detectable porphyrin precursors when grown in darkness, are defective in the conversion of protopo...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00387791
更新日期：1978-01-01 00:00:00
abstract：:Water potential, osmotic potential and turgor measurements obtained by using a cell pressure probe together with a nanoliter osmometer were compared with measurements obtained with an isopiestic psychrometer. Both types of measurements were conducted in the mature region of Tradescantia virginiana L. leaves under non-...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00392152
更新日期：1989-01-01 00:00:00
abstract：:Glutathione (GSH) is one of the main antioxidants in plants. Legumes have the specificity to produce a GSH homolog, homoglutathione (hGSH). We have investigated the regulation of GSH and hGSH synthesis by nitric oxide (NO) in Medicago truncatula roots. Analysis of the expression level of gamma-glutamylcysteine synthet...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-006-0461-3
更新日期：2007-05-01 00:00:00
abstract：:An autopolyploid that contains more than two sets of the same chromosomes causes apparent alterations in morphology, development, physiology and gene expression compared to diploid. However, the mechanisms for these changes remain largely unknown. In the present study, cytological observations of mature embryos and gr...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-012-1629-7
更新日期：2012-08-01 00:00:00
abstract：:Functional chloroplasts from photoheterotrophic Euglena gracilis can be isolated in isoosmotic gradients of 10-80% Percoll. The chloroplasts display rates of CO2 dependent O2 evolution and CO2 fixation of 30-50 μmol mg(-1) chlorophyll h(-1) or 25-35% of the net O2 evolution by the whole cells and appear to be striking...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00385499
更新日期：1982-03-01 00:00:00
abstract：MAIN CONCLUSION:The present review discusses not only advances in coconut tissue culture and associated biotechnological interventions but also future research directions toward the resilience of this important palm crop. Coconut (Cocos nucifera L.) is commonly known as the 'tree of life'. Every component of the palm c...
journal_title：Planta
pub_type： 杂志文章,评审
doi：10.1007/s00425-015-2362-9
更新日期：2015-11-01 00:00:00
abstract：:We studied changes induced by cold on electron transfer pathways (linked to NADH or NADPH oxidation) in endoplasmic reticulum of rapeseed hypocotyls (Brassica napus L.) from a freezing-sensitive variety (ISL) and freezing-tolerant variety (Tradition). Plantlets were grown at 22 degrees C then submitted to a cold shock...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-008-0793-2
更新日期：2008-10-01 00:00:00
abstract：:In order to analyze the genetic programme expressed during the early stages of embryogenesis a cDNA clone bank was constructed from desiccation-tolerant excised barley embryos 18 d after pollination (D. Bartels et al., 1988, Planta 175, 485-492). One of the selected cDNA clones pG31 encodes a transcript of 1300 nucleo...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00203590
更新日期：1994-01-01 00:00:00
abstract：:The capacity for HCO (3) (-) use by Porphyra leucosticta Thur. in Le Jolis grown at different concentrations of inorganic carbon (C(i)) was investigated. The use of HCO (3) (-) at alkaline pH by P. leucosticta was demonstrated by comparing the O(2) evolution rates measured with the O(2) evolution rates theoretically s...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s004250050073
更新日期：1997-03-01 00:00:00
abstract：:The esterification kinetics of chlorophyllide, obtained by a single flash of light, were investigated in etiolated barley ( Hordeum vulgare L.) and oat ( Avena sativa L.) leaves. A rapid phase, leading to esterification of 15% of total chlorophyllide within 15-30 s, was followed by a lag-phase of nearly 2 min and a su...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-002-0870-x
更新日期：2003-01-01 00:00:00
abstract：:To explore the feasibility of immunolocalisation of endogenous abscisic acid (ABA), model systems were developed for testing quantitatively the sensitivity of the second antibody peroxidase/antiperoxidse (PAP) method for immunolocalisation of ABA on plant tissues. Exogenous (±)ABA was fixed to carrot sections on glass...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00394587
更新日期：1987-10-01 00:00:00
