Abstract:
:The supply of energy for stomatal opening was investigated with epidermal peels of Commelina communis L. and Vicia faba L., under white, blue and red irradiation or in darkness. Fluencerate response curves of stomatal opening under blue and red light were consistent with the operation of two photosystems, one dependent on photosynthetic active radiation (PAR) and the other on blue light, in the guard cells. The PAR-dependent system was 3(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU)-sensitive and KCN-resistant and showed a relatively high threshold irradiance for its activation; its activity was most prominent at moderate to high irradiances. The blue-light-dependent photosystem was KCN-sensitive, was active at low irradiances, and interacted with the PAR-dependent photosystem at high blue irradiances. Stomatal opening in darkness, caused by CO2-free air, fusicoccin or high KCl concentrations, was KCN-sensitive and DCMU-resistant. These data indicate that stomatal opening in darkness depends on oxidative phosphorylation for the supply of high-energy equivalents driving proton extrusion. Light-dependent stomatal opening appears to require photophosphorylation from guard-cell chloroplasts and the activation of the blue-light photosystem which could rely either on oxidative phosphorylation or a specific, membrane-bound electron-transport carrier.
journal_name
Plantajournal_title
Plantaauthors
Schwartz A,Zeiger Edoi
10.1007/BF00395472subject
Has Abstractpub_date
1984-05-01 00:00:00pages
129-36issue
2eissn
0032-0935issn
1432-2048journal_volume
161pub_type
杂志文章相关文献
PLANTA文献大全abstract::Kinetin induces an increase in the caffeine content of Coffea leaves of up to 40% of the normal level. The effect is most pronounced in young leaves; it is, however, transient. After six days in old leaves and after 12 days in young leaves, the caffeine content has decreased to its normal level.The results are discuss...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00385302
更新日期:1969-03-01 00:00:00
abstract::Mycorrhizal colonization of genetically modified hybrid aspen (Populus tremula x P. tremuloides Michx.) was investigated over 15 months in a field experiment. The aspen carried the rolC gene from Agrobacterium rhizogenes under control of either the constitutive cauliflower mosaic virus 35S promoter or the light-induci...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250100658
更新日期:2002-02-01 00:00:00
abstract::Metabolite levels and carbohydrates were investigated in the leaves of tobacco (Nicotiana tabacum L.) and leaves and tubers of potato (Solanum tuberosum L.) plants which had been transformed with pyrophosphatase from Escherichia coli. In tobacco the leaves contained two- to threefold less pyrophosphate than controls a...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00216819
更新日期:1992-09-01 00:00:00
abstract::The mechanism for cadmium (Cd2+) uptake into the cytosol of protoplasts from 5- to 7-day-old wheat seedlings (Triticum aestivum L. cv. Kadett) was investigated by a new method, using fluorescence microscopy and the heavy metal-specific fluorescent dye, 5-nitrobenzothiazole coumarin, BTC-5N. Cadmium fluorescence gradua...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-004-1256-z
更新日期:2004-07-01 00:00:00
abstract::Mannans are hemicellulosic polysaccharides in the plant primary cell wall (CW). Mature seeds, specially their endosperm cells, have CWs rich in mannan-based polymers that confer a strong mechanical resistance for the radicle protrusion upon germination. The rupture of the seed coat and endosperm are two sequential eve...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-010-1257-z
更新日期:2011-01-01 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::Ozone (O3), a major photochemical oxidant, causes leaf injury in plants. Plants synthesize salicylic acid (SA), which is reported to greatly affect O3 sensitivity. However, the mechanism of SA biosynthesis under O3 exposure remains unclear. Plants synthesize SA either by a pathway involving phenylalanine as a substrat...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-007-0556-5
更新日期:2007-10-01 00:00:00
abstract::A pine asparagine synthetase gene expressed in developing seedlings has been identified by cloning its cDNA (PsAS1) from Scots pine (Pinus sylvestris L.). Genomic DNA analysis with PsAS1 probes and a sequence-based phylogenetic tree are consistent with the possibility of more than one gene encoding asparagine syntheta...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-005-0196-6
更新日期:2006-06-01 00:00:00
abstract::Nitrate reductase (NR, EC 1.6.6.1) and nitrite reductase (NIR, EC 1.7.7.1) are the key enzymes of nitrate reduction. It is well established that the appearance of these enzymes is "induced" by nitrate, and it is generally believed that NR is cytosolic while NIR is plastidic. In mustard (Sinapis alba L.) cotyledons we ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00195884
更新日期:1990-06-01 00:00:00
abstract::Lignin and lignans share monolignols as common precursors and are both potentially involved in plant defence against pathogens. In this study, we investigated the effects of fungal elicitors on lignin and lignan metabolism in flax (Linum usitatissimum) cell suspensions. Cell suspension cultures of flax were treated wi...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-005-0156-1
更新日期:2006-04-01 00:00:00
abstract::The changes in packed cell volume and in nitrate content and conductivity of the medium during the growth cycle of cell suspension cultures from Petroselinum hortense Hoffm., Glycine max Merr., and Haplopappus gracilis A. Grey in a chemically defined medium were compared. In all three cases sigmoidal curves obtained f...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388694
更新日期:1975-01-01 00:00:00
abstract::A comparison was made of the activity of carboxydismutase (ribulose-1,5-diphosphate carboxylase) between higher plant species which possess the β-carboxylation (C4-dicarboxylic acid) pathway for photosynthesis and species which lack this pathway. Contrary to earlier findings no marked difference in the level of this e...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00385062
更新日期:1969-09-01 00:00:00
abstract::Two barley (Hordeum vulgare L.) β-amylase genes (Bmy1 and Bmy2) were studied during the late maturation phase of grain development in four genotypes. The Bmy1 and Bmy2 DNA and amino acid sequences are extremely similar. The largest sequence differences are in the introns, seventh exon, and 3' UTR. Accumulation of Bmy2...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-011-1348-5
更新日期:2011-05-01 00:00:00
abstract::Endogenous extractable factors associated with auxin action in plant tissues were investigated, especially their effects on elongation of 1-mm coleoptile segments of maize (Zea mays L.), in the presence of saturating 10 microM indole-3-acetic acid (IAA). The relative growth response, to auxin alone, was much smaller i...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250000470
更新日期:2001-05-01 00:00:00
abstract::Changes in membrane topography in the flagellate Poterioochromonas malhamensis, as a result of colchicine and osmotic-stress treatments, have been studied using freeze-fracturing and thin sectioning. Ridges, but not rows of intramembrane particles, in the PF-face which denote the position of underlying cortical microt...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00385446
更新日期:1980-02-01 00:00:00
abstract::The technique of EDTA-enhanced phloem exudation (King and Zeevaart, 1974: Plant Physiol. 53, 96-103) was evaluated with respect to the collection and identification of amino acids exported from senescing wheat leaves. Whilst the characteristics of the exudate collected conform with many of the accepted properties of p...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00386538
更新日期:1981-05-01 00:00:00
abstract:MAIN CONCLUSION:Overexpressing a heat shock factor gene (TaHsfA6bT) from wheat provides thermotolerance in barley by constitutive expression of heat and other abiotic stress-response genes. Temperature is one of the most crucial abiotic factors defining the yield potential of temperate cereal crops, such as barley. The...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-020-03457-4
更新日期:2020-09-18 00:00:00
abstract::Sphagnum magellanicum shows a remarkable variation in colour after the repeated application of cold shocks; mainly red wall pigments are synthesized. An attempt was made to find out in which way the gas exchange of Sphagnum magellanicum under defined conditions is altered after the application of cold shocks.The light...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388819
更新日期:1968-03-01 00:00:00
abstract::At high potassium concentrations it is possible to isolate largely intact polysomes from fertilized and unfertilized Fucus vesiculosus eggs, and to study the distribution pattern of ribosomal particles in a sucrose gradient. The changes in the ribosomal pattern before and after fertilization reflect the time course of...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388548
更新日期:1969-06-01 00:00:00
abstract::Bax inhibitor-1 (BI-1) is a widely conserved cell death suppressor localized in the endoplasmic reticulum membrane. Our previous results revealed that Arabidopsis BI-1 (AtBI-1) interacts with not only Arabidopsis cytochrome b 5 (Cb5), an electron transfer protein, but also a Cb5-like domain (Cb5LD)-containing protein,...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-014-2065-7
更新日期:2014-07-01 00:00:00
abstract::Comparative investigations of 20 Centrospermae from 12 families revealed that a plastid with an electron-dense core and/or annular plastid filaments is typical for Caryophyllales.When the plastid membrane breaks down - it is most probable that this takes place artificially during the process of preparation and fixatio...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00385032
更新日期:1969-09-01 00:00:00
abstract:MAIN CONCLUSION:Rhizobial symbiosis improved the water status of bean plants under salinity-stress conditions, in part by increasing their osmotic root water flow. One of the main problems for agriculture worldwide is the increasing salinization of farming lands. The use of soil beneficial microorganisms stands up as a...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-018-03076-0
更新日期:2019-04-01 00:00:00
abstract::Sporangiophores of Phycomyces blakesleeanus that are gravitropically stimulated by inclining them relative to the earth's gravitational vector obey the sine law for inclination angles between 0 degrees and 150 degrees. The quantitative relation between gravitropism and phototropism was analyzed for sporangiophores tha...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-001-0705-1
更新日期:2002-04-01 00:00:00
abstract::Dark-grown radish seedlings (Raphanus sativus L.) were sprayed with 10(-3) mol·l(-1) 2,4-dichlorophenoxyacetic acid and then were exposed to a 14:10 light: dark cycle. Cotyledon samples from these seedlings and unsprayed controls were taken for electron microscopy, chlorophyll determinations, and photosynthetic rate m...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00394437
更新日期:1977-01-01 00:00:00
abstract::Plant defence strategies usually involve the action of several gene products. Transgenic resistance strategies are likely to have enhanced efficacy when they involve more than one transgene. Here we explore possible mechanisms for the co-delivery of multiple effectors via a single transgene. As an example we report th...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250050281
更新日期:1998-04-01 00:00:00
abstract::Zearalenone (F-2), an estrogenic factor produced by a number of Fusarium spp., stimulates a leakage of electrolytes, β-cyanin and aminoacids from three plant tissues. F-2 inhibits rubidium uptake in roots of Zea mays L. and Beta vulgaris L. var. rubra. However the effect in the latter tissue is evident after long-term...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00389051
更新日期:1978-01-01 00:00:00
abstract::The net increase in total protein during development of tomato fruit locule tissue has been further investigated with respect to the sites of protein synthesis within the cells. The results point to the plastids as being the major sites of protein synthesis. This is supported by radioisotope experiments in which label...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00409819
更新日期:1967-09-01 00:00:00
abstract::Raffinose (O-alpha- D-galactopyranosyl-(1-->6)- O-alpha- D-glucopyranosyl-(1<-->2)- O-beta- D-fructofuranoside) is a widespread oligosaccharide in plant seeds and other tissues. Raffinose synthase (EC 2.4.1.82) is the key enzyme that channels sucrose into the raffinose oligosaccharide pathway. We here report on the is...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-002-0804-7
更新日期:2002-09-01 00:00:00
abstract::To test the morphogenetic role of equilateral stress and physiological confinement in dedifferentiation of epidermal cells, impermeable barriers of goldmetal foil were placed between the postgenitally fusing epidermal surfaces in the gynoecium of Catharanthus roseus (L.) G. Don. Cells contacting the foil barrier were ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388210
更新日期:1978-01-01 00:00:00
abstract::Anaerobic conditions completely block the synthesis of carotenoids in Fusarium aquaeduciuum or Neurospora crassa. Even after sufficient illumination of the mycelia in the presence of air, the subsequent production of carotenoids in the dark is suppressed entirely when the fungi are transferred to an oxygen-free atmosp...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00386832
更新日期:1971-09-01 00:00:00