Abstract:
:The relationship between growth, change in cell osmotic pressure and accumulation of osmotic solutes was investigated in hypocotyls of sunflower (Helianthus annum L.) seedlings. During growth in darkness the osmotic pressure decreased by 50% between days 2 and 6 after sowing. After irradiation of dark-grown seedlings with continuous white light (WL) an inhibition of hypocotyl growth was measured, but the osmotic pressure of the growing cells was not lower than in the dark-grown control. Growth in darkness and after WL irradiation was accompanied by an increase in the amount of osmotic substances (soluble sugars) which was proportional to the increase in length of the organ. During growth in continuous WL the cell osmotic pressure decreased by 45 % between days 2 and 6 after sowing. The transfer of WL-grown seedlings to darkness ("re-etiolation") resulted in a rapid acceleration of hypocotyl growth, but the cell osmotic pressure was the same as that of the WL grown control. Growth in continuous WL was accompanied by a corresponding accumulation of osmotic substances (soluble sugars). The transition from WL to darkness resulted in an enhanced accumulation of osmotica and an increase in cell-wall extensibility. The results indicate that the relative maintenance of cell osmotic pressure during rapid hypocotyl growth in darkness is caused by an enhanced accumulation of soluble sugars into the growing cells of the organ.
journal_name
Plantajournal_title
Plantaauthors
Kutschera Udoi
10.1007/BF00208237subject
Has Abstractpub_date
1991-04-01 00:00:00pages
61-6issue
1eissn
0032-0935issn
1432-2048journal_volume
184pub_type
杂志文章相关文献
PLANTA文献大全abstract::Forty three accessions of Brassica species and one each of Sinapis and Raphanus were assessed for (i) resistance to Leptosphaeria maculans according to a coty-ledon-inoculation test and (ii) indole phytoalexin accumulation following abiotic elicitation with CuCl2. Five indole phytoalexins were determined in the lines ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00197957
更新日期:1991-05-01 00:00:00
abstract::The synthesis of a major phloem protein, PP2, was investigated by measurement of the mRNA at various stages of phloem development in Cucurbita. Quantitative assays with immuno-electrophoresis showed that the amounts of PP2 in hypocotyls of Cucurbita seedlings increased with the age of seedlings. An increase in mRNA fo...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00395032
更新日期:1987-03-01 00:00:00
abstract::Changes in fatty-acid metabolism were studied in soybean (Glycine max Merr.) cotyledons during senescence as well as in cotyledons which had been caused to regreen by removal of the epicotyl from the seedling. The activities of the enzymes acetyl-CoA synthetase (EC 6.2.1.1) and fatty-acid synthetase in plastids isolat...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388746
更新日期:1979-12-01 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::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::Elongation growth and gibberellin (GA9) metabolism in excised hypocotyls of lettuce (Lactuca sativa L. cv. Arctic) were investigated. Exogenously supplied GA9 stimulates elongation of hypocotyl sections and this response is intermediate between that elicited by GA1 or GA20 and GA4/7 mixture. Although uptake of radioac...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00384913
更新日期:1978-01-01 00:00:00
abstract:MAIN CONCLUSION:Circular RNA (circRNA) discovery, expression patterns and experimental validation in developing tea leaves indicates its correlation with circRNA-parental genes and potential roles in ceRNA interaction network. Circular RNAs (circRNAs) have recently emerged as a novel class of abundant endogenous stable...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-018-2983-x
更新日期:2018-12-01 00:00:00
abstract:MAIN CONCLUSION:β-sitosterol influences amino acids, carbohydrates, organic acids, and other metabolite metabolism and homeostasis largely contributing to better tolerance to water stress in white clover. β-sitosterol (BS) could act as an important plant growth regulator when plants are subjected to harsh environmental...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-019-03277-1
更新日期:2019-12-01 00:00:00
abstract::Incorporation of [(14)C]uridine into ribosomal RNA and ribosomal RNA precursor fractions was studied in isolated wheat embryos and in embryos remaining within the intact grains during germination. In isolated embryos, radioactive 25S and 18S as well as 31S RNA species appeared already within the first 3 h of germinati...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00384191
更新日期:1977-01-01 00:00:00
abstract::Two phosphorylases could be detected on gel-electropherograms of leaf-extracts of Spinacia oleracea and of immature cotyledons of Vicia faba. These two phosphorylases could be separated by means of ammonium sulfate fractionation. Both the slower migrating phosphorylases from spinach and from beans, but not the fast on...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00396028
更新日期:1968-09-01 00:00:00
abstract::Morphogenesis and differentiation of the young gametophytes (=sporelings) of Dryopteris filix-mas are controlled by light. Blue light leads to the formation of "normal" two-dimensional prothallia; under red light, however, the gametophytes grow as cellular filaments. Morphogenesis in blue light is connected with an in...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00391162
更新日期:1968-09-01 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::During a search for genes with induced or enhanced expression in the early stages of development of stem-borne nodules on Sesbania rostrata, a cDNA with homology to chalcone reductase (CHR) genes was isolated. Here, we describe the characterization of a full-length CHR cDNA (Srchr1) and the pattern of CHR transcript a...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250050605
更新日期:1999-07-01 00:00:00
abstract::A soluble extract from pea (Pisum sativum L.) roots, when incubated with ATP and inositol 1,4,5-trisphosphate, produced an inositol tetrakisphosphate. The chromatographic properties of this inositol tetrakisphosphate, and of the products formed by its chemical degradation, identify it as inositol 1,4,5,6-tetrakisphosp...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00199975
更新日期:1992-07-01 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:MAIN CONCLUSION:Identification and characterization of 5,446 mlncRNAs from Salvia miltiorrhiza showed that the majority of identified mlncRNAs were stress responsive, providing a framework for elucidating mlncRNA functions in S. miltiorrhiza. mRNA-like noncoding RNAs (mlncRNAs) are transcribed by RNA polymerase II and ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-015-2246-z
更新日期:2015-05-01 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 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
pub_type: 杂志文章
doi:10.1007/s00425-006-0276-2
更新日期:2006-09-01 00:00:00
abstract::The pepper SAR8.2 gene, CASAR82A, was locally and systemically induced in pepper plants which had been infected by Xanthomonas campestris pv. vesicatoria or by Pseudomonas fluorescens. The DNA 1,283 bp sequence upstream of the CASAR82A gene was assessed with regard to the activity of the CASAR82A promoter fused to the...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-005-0210-z
更新日期:2006-07-01 00:00:00
abstract::Brief irradiation of 3-d-old maize (Zea mays L.) seedlings with red light (R; 180 J m(-2)) inhibits elongation of the mesocotyl (70-80% inhibition in 8 h) and reduces its indole-3-acetic acid (IAA) content. The reduction in IAA content, apparent within a few hours, is the result of a reduction in the supply of IAA fro...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393308
更新日期:1982-12-01 00:00:00
abstract::The beta-ketoacyl-acyl carrier protein synthase III (KAS III; EC 2.3.1.180) is a condensing enzyme catalyzing the initial step of fatty acid biosynthesis using acetyl-CoA as primer. To determine the mechanisms involved in the biosynthesis of fatty acids in sunflower (Helianthus annuus L.) developing seeds, a cDNA codi...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-010-1131-z
更新日期:2010-05-01 00:00:00
abstract::1. The following acid hydrolases are partially sedimentable from cell-free extracts of corn seedlings: protease (pH-optimum 4,2), phosphatase (pH-optimum 5,0 and 6,5), unspecific esterase (pH-optimum 5,2), RNase (pH-optimum 6,5), arylsulphatase-C (pH-optimum 5,0) and α- and β-amylase (pH-optimum 7,0 and 5,0 respective...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388148
更新日期:1966-03-01 00:00:00
abstract::Three methods of estimating photorespiratory rate in leaves of the C3-C4 intermediate species Moricandia arvensis and the related C3 species Moricandia moricandioides were compared. The results indicated that the photorespiratory rate in M. arvensis is less than in M. moricandioides, and that this is caused partly by ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00391098
更新日期:1987-06-01 00:00:00
abstract::Some ionic relations of the filamentous green alga Mougeotia sp. have been analyzed under different light conditions. Data from influx and efflux measurements using (86)Rb(+) and (36)Cl(-) fit the model of three cellular compartments (cell wall, cytoplasm, vacuole) in series. This result is remarkable, since in a Moug...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388390
更新日期:1974-06-01 00:00:00
abstract::The lemma and palea (lemma/palea), which form the husk of barley (Hordeum vulgare L.) seeds, constitutively express high levels of defense-related genes, relative to leaves [Abebe et al. (2004) Crop Sci 44:942-950]. One of these genes, Lem2, is expressed mainly in the lemma/palea and coleoptile and is strongly upregul...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-004-1429-9
更新日期:2005-05-01 00:00:00
abstract::Using gene targeting by homologous recombination in Ceratodon purpureus, we were able to knock out four phytochrome photoreceptor genes independently and to analyze their function with respect to red light dependent phototropism, polarotropism, and chlorophyll content. The strongest phenotype was found in knock-out li...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-009-0922-6
更新日期:2009-06-01 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::Active Cl(-) uptake by Chlorella fusca was examined by using (36)Cl as a label. Under light/air conditions chloride influx from a 2.4·10(-5) M solution was 4.0±0.04 nmol m(-2)s(-1). After 70±10 min a stationary 380±40 fold accumulation was reached. In dark/air and dark/argon influx and accumulation were reduced to 25±...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393437
更新日期:1982-11-01 00:00:00
abstract::Hahb-4 is a member of Helianthus annuus (sunflower) subfamily I of HD-Zip proteins. Transgenic Arabidopsis thaliana plants constitutively expressing this gene exhibit a strong tolerance of water stress in concert with morphological defects and a delay in development. In order to obtain a drought-tolerant phenotype wit...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-007-0560-9
更新日期:2007-10-01 00:00:00
abstract::Galactose was the major non-cellulosic neutral sugar present in the cell walls of 'Mitchell' petunia (Petunia axillaris x P. axillaris x P. hybrida) flower petals. Over the 24 h period associated with flower opening, there was a doubling of the galactose content of polymers strongly associated with cellulose and insol...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-008-0862-6
更新日期:2009-02-01 00:00:00