Abstract：
:1. The course of senescence in leaves of corn seedlings, as measured by the loss of chlorophyll, is shown to be controlled by two correlative influences: a) In the isolated leaf, the base tends to enhance yellowing of the tip region. b) In the leaf attached to the intact plant, correlative aging is delayed by interactions with other parts of the plant. 2. Transport of P(32) in the isolated leaf is directed from tip to base. It is promoted under conditions enhancing senescence of the tip (application of kinetin to the base). Conditions delaying senescence (leaf attached to intact plant) defer the basipetal P(32)-transport. This suggests that the pattern of correlative aging in detached leaves is caused by a shift of materials from tip to base ("directed transport" or "mobilization"). 3. Kinetin-induced directed transport of P(32) was used as a test system to study mobilization. Localized application of kinetin to a leaf causes a) an accumulation of translocated P(32) in the treated area, b) an acceleration of P(32)-transport directed towards the kinetin center. 4. The rate of kinetin-induced P(32)-transport is shown to be mainly determined by the activity of the mobilizing center; but the dissipation of phosphates out of the source region, being a separate variable, may also influence the rate of P(32)-transport. 5. The attracting activity of mobilizing centers is shown to be enhanced by increasing amounts of materials already accumulated. Thus, mobilization is a self-amplifying process. This is also reflected in the sigmoid shape of the time curves of P(32)-mobilization.
journal_name
Plantajournal_title
Plantaauthors
Müller K,Leopold ACdoi
10.1007/BF00385624subject
Has Abstractpub_date
1966-06-01 00:00:00pages
167-85issue
2eissn
0032-0935issn
1432-2048journal_volume
68pub_type
杂志文章相关文献
PLANTA文献大全abstract：:The effects of methyl jasmonate and jasmonic acid on uptake of abscisic acid (ABA) by suspension-cultured runner-bean cells and subapical runner-bean root segments have been investigated. Increasing concentrations of methyl jasmonate inhibit ABA uptake by the cultured cells with a K i of 22±3 μM. This is not due to cy...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00397356
更新日期：1985-10-01 00:00:00
abstract：:The response of net photosynthesis and apparent light respiration to changes in [O2], light intensity, and drought stress was determined by analysis of net photosynthetic CO2 response curves. Low [O2] treatment resulted in a large reduction in the rate of photorespiratory CO2 evolution. Lightintensity levels influence...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00384961
更新日期：1977-01-01 00:00:00
abstract：:Hypocotyls of 5-d-old etiolated soybean seedlings (Glycine max (L.) Merr. cv. Altona) were treated with (a) dithiothreitol (DTT) or one of the sulfhydryl-binding reagents N-ethylmaleimide (NEM), p-hydroxymercuribenzoate (PMB) und p-chloromercuribenzene sulfonic acid (PMBS), (b) one of the sulfhydryl reagents in combin...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00393412
更新日期：1984-03-01 00:00:00
abstract：:Short-term applications of very high concentrations of 1-naphthaleneacetic acid (NAA) to expiants from flower stalks of tobacco (Nicotiana tabacum L. cv. Samsun) induced flower-bud regeneration to the same extent as longer or continuous incubation on lower concentrations. The maximum number of flower buds per explant ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00198793
更新日期：1990-02-01 00:00:00
abstract：MAIN CONCLUSION:The chlorophyll fluorescence parameter ΦNO is an excellent metric for the non-destructive monitoring of disease progression, measured over a broad range of light intensities. The suitability of the slow induction chlorophyll fluorescence parameters ΦPSII, ΦNPQ, and ΦNO to monitor in vivo disease progres...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-015-2427-9
更新日期：2016-01-01 00:00:00
abstract：:In leaves of S. nigra, fragmentation of the rachis follows the autumnal abscission of leaflets and the high levels of ethylene produced by the senescing blades. Fragmentation is accompanied by cell growth and ultrastructural changes in a zone of cells precisely differentiated at the separation zone. Studies with expla...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00384421
更新日期：1976-01-01 00:00:00
abstract：:Past genetic studies have shown three independent loci designated O, R and M control spathe color in Anthurium andraeanum (Hort.). To evaluate the genetic model and to understand the control of anthocyanin biosynthesis at the molecular level, the expression of the anthocyanin biosynthetic genes, CHS, F3H, DFR, ANS and...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-013-2007-9
更新日期：2014-03-01 00:00:00
abstract：:The tertiary sulphonium compound, β-dimethylsulphoniopropionate (DMSP) and the quaternary ammonium compounds glycine betaine and homarine are important osmotica in Platymonas subcordiformis cells. Following hypersaline stresses the compounds were accumulated after a lag period of 3 h and equilibrium concentrations wer...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00391230
更新日期：1986-04-01 00:00:00
abstract：:Latent nitrate reductase activity (NRA) was detected in corn (Zea mays L., Golden Jubilee) root microsome fractions. Microsome-associated NRA was stimulated up to 20-fold by Triton X-100 (octylphenoxy polyethoxyethanol) whereas soluble NRA was only increased up to 1.2-fold. Microsome-associated NRA represented up to...
journal_title：Planta
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：:We previously showed that recombinant extra domain A from fibronectin (EDA) purified from Escherichia coli was able to bind to toll-like receptor 4 (TLR4) and stimulate production of proinflammatory cytokines by dendritic cells. Because EDA could be used as an adjuvant for vaccine development, we aimed to express it f...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-010-1102-4
更新日期：2010-03-01 00:00:00
abstract：:The quiescent center is viewed as an architectural template in the root apical meristem of all angiosperm and gymnosperm root tips. In roots of Arabidopsis thaliana (L.) Heynh., the quiescent center inhibits differentiation of contacting initial cells and maintains the surrounding initial cells as stem cells. Here, th...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s004250000276
更新日期：2000-06-01 00:00:00
abstract：:Quinate: NAD(+) oxidoreductase (EC 1.1.1.24) from carrot cells was deactivated by incubating partially purified extract with MgCl2 at 30°C. The deactivation process was prevented by adding fluoride, a phosphatase inhibitor. Once inactivated, the enzyme could recover its initial activity on incubation with ATP-Mg eithe...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00387863
更新日期：1982-05-01 00:00:00
abstract：:During the culture of tobacco BY 2 cells derived from Nicotiana tabacum L. cv. Bright Yellow 2, morphological changes of plastid (pt) nucleoids and their replication were examined by fluorescence microscopy after staining with 4'6-diamidino-2-phenylindole. Upon transfer to fresh medium, the fluorescence intensity orig...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00394776
更新日期：1988-05-01 00:00:00
abstract：:Gibberellin (GA) biosynthesis in cell-free systems from Cucurbita maxima L. endosperm was reinvestigated using incubation conditions different from those employed in previous work. The metabolism of GA12 yielded GA13, GA43 and 12α-hydroxyGA43 as major products, GA4, GA37, GA39, GA46 and four unidentified compounds as ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00194430
更新日期：1993-03-01 00:00:00
abstract：:The role of acidic SK(n) dehydrins in stress tolerance of important crop and model species of the Solanaceae remains unknown. We have previously shown that the acidic SK₃ dehydrin DHN24 from Solanum sogarandinum is constitutively expressed and its expression is associated with cold acclimation. Here we found that DHN2...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-013-2018-6
更新日期：2014-04-01 00:00:00
abstract：:The surface of plants is covered by cuticular wax, which contains a mixture of very long-chain fatty acid (VLCFA) derivatives. This wax surface provides a hydrophobic barrier which reduces non-stomatal water loss. One component of the cuticular wax is the alkyl esters, which typically contain a VLCFA esterified to an ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-007-0489-z
更新日期：2007-07-01 00:00:00
abstract：:The developmental morphology and growth dynamics of the leaf of Nicotiana tabacum L. cv. Xanthi Nc. are described. Epidermal and internal cell patterns indicate that the leaf axis arises from approx. 100 cells in four layers of the shoot apex, while the lamina arises from several rows of cells in each of three layers ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00395038
更新日期：1985-08-01 00:00:00
abstract：:The nitric oxide (NO) donor sodium nitroprusside (SNP) significantly promoted germination of switchgrass (Panicum virgatum L. cv Kanlow) in the light and in the dark at 25 degrees C, across a broad range of concentrations. SNP also promoted seed germination in two other warm-season grasses. A chemical scavenger of NO ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-005-0162-3
更新日期：2006-05-01 00:00:00
abstract：:Physical clustering of genes has been shown in plants; however, little is known about gene clusters that have different functions, particularly those expressed in the tomato fruit. A class I 17.6 small heat shock protein (Sl17.6 shsp) gene was cloned and used as a probe to screen a tomato (Solanum lycopersicum) genomi...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-011-1518-5
更新日期：2012-03-01 00:00:00
abstract：:The studies described in the paper were conducted with tissue slices of Crassulacean acid metabolism (CAM) plants floating in isotonic buffer. In a first series of experiments, temperature effects on the efflux of [(14)C]malate and(14)CO2 were studied. An increase of temperature increased the efflux from the tissue in...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00634473
更新日期：1988-12-01 00:00:00
abstract：:Artemisia annua L. is the only natural resource that produces artemisinin (Qinghaosu), an endoperoxide sesquiterpene lactone used in the artemisinin-combination therapy of malaria. The cross-hybridization properties of A. annua do not favor studying artemisinin biosynthesis. To overcome this problem, in this study, we...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-011-1430-z
更新日期：2011-10-01 00:00:00
abstract：:A genotype of Trifolium repens L. capable of sustaining high-frequency plant regeneration from long-term (24-month old) cell cultures has been selected. Numerous densely cytoplasmic meristemoids were formed in suspension cultures following the coordinate removal of 2,4-dichlorophenoxyacetic acid (2,4-D) and trichlorop...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00397413
更新日期：1984-09-01 00:00:00
abstract：MAIN CONCLUSION:This review summarizes the current understanding, future challenges and ongoing quest on sugar metabolic alterations that influence the outcome of plant-pathogen interactions. Intricate cellular and molecular events occur during plant-pathogen interactions. They cause major metabolic perturbations in th...
journal_title：Planta
pub_type： 杂志文章,评审
doi：10.1007/s00425-018-3018-3
更新日期：2019-02-01 00:00:00
abstract：:Strategic control of mitochondrial movements and cellular distribution is essential for correct cell function and survival. However, despite being a vital process, mitochondrial movement in plant cells is a poorly documented phenomenon. To investigate the roles of actin filaments and microtubules on mitochondrial move...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-009-1086-0
更新日期：2010-03-01 00:00:00
abstract：:The ability to non-invasively measure metabolic oxygen flux is a very important tool for physiologists interested in a variety of questions ranging from basic metabolism, growth/development, and stress adaptation. Technologies for measuring oxygen concentration near the surface of cells/tissues include electrochemical...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-010-1234-6
更新日期：2010-10-01 00:00:00
abstract：:After sowing, mustard (Sinapis alba L.) seedlings were grown for 48 h in white light (25°C). These fully de-etiolated, green seedlings were used as experimental material between 48 and 72 h after sowing to study the control by phytochrome (Pfr) of hypocotyl elongation after a white light→dark transition. It was found ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00387892
更新日期：1978-01-01 00:00:00
abstract：:1. It has been shown that the percentage germination of seed in contact with an aqueous solution depends (a) on the extent of differential permeability of the seed coat to the solute and (b) on whether the solute is toxic. 2. In investigations with "Meteor" pea seeds, polyethylene glycols of nominal molecular weights ...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/BF00384644
更新日期：1966-03-01 00:00:00
abstract：MAIN CONCLUSION:Coleoptera, the largest and the most diverse Insecta order, is characterized by multiple adaptations to plant feeding. Insect-associated microorganisms can be important mediators and modulators of interactions between insects and plants. Interactions between plants and insects are highly complex and inv...
journal_title：Planta
pub_type： 杂志文章,评审
doi：10.1007/s00425-016-2543-1
更新日期：2016-08-01 00:00:00
abstract：MAIN CONCLUSION:Isolation of high-quality RNA, including miRNA, from microscopic woody apple bud meristem using laser capture microdissection-based method. It is often challenging to study the expression of microRNAs (miRNAs) or genes in less accessible inner tissues of tree species rich in polyphenols or polysaccharid...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/s00425-019-03127-0
更新日期：2019-06-01 00:00:00
abstract：:Rhodococcus fascians is a Gram-positive bacterium that infects dicotyledonous and monocotyledonous plants, leading to an alteration in the normal growth process of the host. The disease results from the modulation of the plant hormone balances, and cytokinins are thought to play an important role in the induction of s...
journal_title：Planta
pub_type： 杂志文章
doi：10.1007/PL00008131
更新日期：2000-01-01 00:00:00
