Abstract：
:Developmental changes of tomato (Lycopersicon esculentum) fruit tissues during maturation were analyzed by a physically defined method (stress-relaxation analysis). The tip of a conical probe connected to a load sensor was positioned on the cut surface of a sliced tomato fruit, and the decay of the imposed stress was monitored. Stress-relaxation data thus obtained were used for the calculation of three stress-relaxation parameters. Different zones within tomato fruit harvested at six different ripening stages were analyzed. One of the stress-relaxation parameters, minimum stress-relaxation time (T(0)), decreased as the fruits matured. The decrease in T(0) was first found in the core of the carpel junction within the endopericarp at the blossom end during the breaker stage. The decrease in T(0) progressed from the blossom end, through the equatorial region and finally throughout the shoulder, as the fruit matured. In mature green fruit, T(0) values within the placenta and the proximal carpel junction were lower than those by other parts of the fruit. For all measurements the maximum stress-relaxation time was not substantially changed during maturation, nor were their changes observed in different regions of the fruit. The observed relaxation rate was therefore correlated with softening. The results indicate that fruit softening may be physically associated with the stress-relaxation parameter, T(0), and the extent of softening is a function of position within the fruit. Decreases in T(0) value appear to be correlated with the reported regional variation in the appearance of polygalacturonase.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Kojima K,Sakurai N,Kuraishi S,Yamamoto R,Nevins DJdoi
10.1104/pp.96.2.545subject
Has Abstractpub_date
1991-06-01 00:00:00pages
545-50issue
2eissn
0032-0889issn
1532-2548journal_volume
96pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract：:STARCH SYNTHASE4 (SS4) is required for proper starch granule initiation in Arabidopsis (Arabidopsis thaliana), although SS3 can partially replace its function. Unlike other starch-deficient mutants, ss4 and ss3/ss4 mutants grow poorly even under long-day conditions. They have less chlorophyll and carotenoids than the ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.113.223420
更新日期：2013-09-01 00:00:00
abstract：:A comparison of barley (Hordeum vulgare L.) leaves was made between the cytosolic content of amino acids and sucrose as determined by subcellular fractionation and the corresponding concentration in phloem sap, which was collected continuously for up to 6 days from severed aphid stylets. Because amino acids were found...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.99.3.996
更新日期：1992-07-01 00:00:00
abstract：:Formation of the riboside-5'-monophosphate is a general feature of the metabolism of cytokinins in plants. As part of a study of the biological significance of the nucleotide form of cytokinins, we analyzed a mutant of Arabidopsis thaliana deficient in adenine phosphoribosyltransferase (APRT) activity for its ability ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.95.3.900
更新日期：1991-03-01 00:00:00
abstract：:The rates of absorption and metabolism of 3-amino-2,5-dichlorobenzoic acid (amiben) were investigated in 3-day-old roots of amiben-sensitive velvetleaf (Abutilon theophrasti Medic.) and amiben-tolerant morningglory [Ipomoea hederacea (L.) Jacq.].The initial rates of amiben absorption and binding were identically conce...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.44.6.854
更新日期：1969-06-01 00:00:00
abstract：:Under normal field growth conditions, canola (Brassica napus) seeds produce chloroplasts during early seed development and then catabolize the photosynthetic machinery during seed maturation, producing mature seeds at harvest that are essentially free of chlorophyll (Chl). However, frost exposure early in canola seed ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.106.084483
更新日期：2006-09-01 00:00:00
abstract：:The plant hormone jasmonate (JA) promotes resistance to biotic stress by stimulating the degradation of JASMONATE ZIM-DOMAIN (JAZ) proteins, which relieves repression on MYC transcription factors that execute defense programs. JA-triggered depletion of JAZ proteins in Arabidopsis (Arabidopsis thaliana) is also associa...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.19.01335
更新日期：2020-06-01 00:00:00
abstract：:The influx of K(+) from (86)Rb-labeled solutions in the concentration range 0.008 to 0.2 mm into roots of intact plants and excised roots of barley plants (Hordeum vulgare [L.]) previously grown in 5 mm CaSO(4) (low K(+) roots) or 0.5 mm CaSO(4) plus 5 mm KCl (high K(+) roots) was measured. A consistent observation of...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.61.4.481
更新日期：1978-04-01 00:00:00
abstract：:Understanding the biochemistry of triacylglycerol (TAG) assembly is critical in tailoring seed oils to produce high-value products. Hydroxy-fatty acid (HFA) is one such valuable modified fatty acid, which can be produced at low levels in Arabidopsis (Arabidopsis thaliana) seed through transgenic expression of the cast...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.18.01409
更新日期：2019-03-01 00:00:00
abstract：:Lys deacylases are essential regulators of cell biology in many contexts. Here, we have identified CddA (cyanobacterial deacetylase/depropionylase), a Lys deacylase enzyme expressed in the cyanobacterium Synechococcus sp. PCC 7002 that has both deacetylase and depropionylase activity. Loss of the gene cddA led to slow...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.20.00583
更新日期：2020-10-01 00:00:00
abstract：:Magnesium-28 was applied to specific leaves of bean (Phaseolus vulgaris) and barley (Hordeum vulgare) plants. After 24 hours, as much as 7% of the absorbed Mg was exported from the treated bean leaves and 11% was transported basipetally from the treated zone of the barley leaves. Transport of Mg did not occur past a h...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.46.1.50
更新日期：1970-07-01 00:00:00
abstract：:Phosphinothricin (PPT) is the active component of a family of environmentally safe, nonselective herbicides. Resistance to PPT in transgenic crops has been reported by nuclear expression of a bar transgene encoding phosphinothricin acetyltransferase, a detoxifying enzyme. We report here expression of a bacterial bar g...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.125.4.1585
更新日期：2001-04-01 00:00:00
abstract：:The ripening of a fleshy fruit represents the summation of an array of biochemical processes that are regulated by interactions between developmental programs and environmental inputs. Analysis of tomato (Solanum lycopersicum) mutants and inhibitor studies indicate that ethylene is necessary for full development of th...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.057745
更新日期：2005-05-01 00:00:00
abstract：:Relative water content, solute concentrations, and osmolality were determined in the water storage tissue (hydrenchyma) and the assimilatory tissue (chlorenchyma) of the succulent leaves of Peperomia magnoliaefolia (Jac) (Piperaceae) during slow desiccation. Relative water loss was significantly greater for the hydren...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.83.1.190
更新日期：1987-01-01 00:00:00
abstract：:When tobacco (Nicotiana tabacum L. var. Virginia Gold) plants were pretreated with Na ((22)Na) several days before detopping, from 2.3 to 4.9% of Na previously accumulated in roots appeared in the xylem exudate in 7 days after detopping. Na from the external medium, however, was readily transported to the exudate. Mor...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.50.3.388
更新日期：1972-09-01 00:00:00
abstract：:Plants of the wilty tomato (Lycopersicum esculentum) mutant, flacca, and of the normal cultivar Rheinlands Ruhm growing under either "normal" or high humidity were used in this research. Under normal humidity, RNase activity was much higher in mutant plants in which abscisic acid (ABA) and water content were lower tha...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.59.2.173
更新日期：1977-02-01 00:00:00
abstract：:Following excision, etiolated epicotyl segments of Pisum sativum L. cv. Alaska exhibit a marked hyperpolarization of membrane potential which is followed by a linear accumulation of K(+) when segments are incubated in Higinbotham nutrient solution. Segments aged for several hours and then reexcised display only a slig...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.67.4.864
更新日期：1981-04-01 00:00:00
abstract：:Fruit removal for 5 weeks after flowering increased acid phosphatase activity 10-fold in soybean (Glycine max L. Merr. Var Hobbit) leaves compared with normal seed-pod-bearing plants. The major acid phosphatase activity in leaves was purified over 2700-fold, yielding a single polypeptide of 51 kD with a specific activ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.1.49
更新日期：1994-01-01 00:00:00
abstract：:A method for testing the purity of isolated vacuoles is proposed. Preparations of isolated vacuoles often contain "impure vacuoles," namely, vacuoles contaminated with some cytoplasmic remnants. Such impure vacuoles are stained by the vital fluorescent dye fluorescein-diacetate. Vacuoles enclosed only by the tonoplast...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.65.1.85
更新日期：1980-01-01 00:00:00
abstract：:A new conjugate, 1-(gamma-L-glutamylamino)cyclopropane-1-carboxylic acid (GACC), of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) is identified. The only previously identified conjugate of ACC is 1-(malonylamino)cyclopropane-1-carboxylic acid (MACC). GACC, not MACC, was the major conjugate formed ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.3.917
更新日期：1995-11-01 00:00:00
abstract：:Synechocystis PCC 6803 contains two types of glutathione peroxidase-like proteins (GPX-1 and GPX-2) that utilize NADPH but not reduced glutathione and unsaturated fatty acid hydroperoxides or alkyl hydroperoxides. The steady-state transcript level of gpx-1 gradually increased under oxidative stress conditions imposed ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.044842
更新日期：2004-09-01 00:00:00
abstract：:The occurrence of fungicidal, elemental S is well documented in certain specialized prokaryotes, but has rarely been detected in eukaryotes. Elemental S was first identified in this laboratory as a novel phytoalexin in the xylem of resistant genotypes of Theobroma cacao, after infection by the vascular, fungal pathoge...
journal_title：Plant physiology
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:Bicarbonate uptake by isolated chloroplast envelope membranes and intact chloroplasts of spinach (Spinacia oleracea L. var. Viroflay) in darkness exhibited a similar dependency upon temperature, pH, time, and concentrations of isolated or attached envelope membranes. This similarity in uptake properties demonstrates t...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.54.4.520
更新日期：1974-10-01 00:00:00
abstract：:Photometric analysis of chloroplast movements in various phytochrome (phy) mutants of Arabidopsis showed that phyA, B, and D are not required for chloroplast movements because blue light (BL)-dependent chloroplast migration still occurs in these mutants. However, mutants lacking phyA or phyB showed an enhanced respons...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.103.029116
更新日期：2003-12-01 00:00:00
abstract：:To define the functions of genes previously identified by expression profiling as being rapidly light induced under phytochrome (phy) control, we are investigating the seedling de-etiolation phenotypes of mutants carrying T-DNA insertional disruptions at these loci. Mutants at one such locus displayed reduced responsi...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.103.030007
更新日期：2003-12-01 00:00:00
abstract：:A fluorescent dye sensitive to membrane potential was used to follow the plasma-membrane potential in the unicellular halo-tolerant alga Dunaliella salina. The signal observed during dissipation of the plasma membrane potential by the addition of excess K(+) and valinomycin, or a protonophore, was taken as a measure o...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.93.2.403
更新日期：1990-06-01 00:00:00
abstract：:The kinetics of development of protein-synthesizing capacity in the imbibing wheat embryo, were studied both in vivo and in vitro. During the first 30 minutes of imbibition protein-synthesizing capacity rises rapidly, lagging about 10 minutes behind water uptake. This rise in synthesizing capacity is accompanied by an...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.41.7.1167
更新日期：1966-09-01 00:00:00
abstract：:Although researchers have established that DNA methylation and active demethylation are dynamically regulated in plant cells, the molecular mechanism for the regulation of active DNA demethylation is not well understood. By using an Arabidopsis (Arabidopsis thaliana) line expressing the Promoter RESPONSIVE TO DEHYDRAT...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.114.252106
更新日期：2015-03-01 00:00:00
abstract：:Plant protoplasts show physiological perceptions and responses to hormones, metabolites, environmental cues, and pathogen-derived elicitors, similar to cell-autonomous responses in intact tissues and plants. The development of defined protoplast transient expression systems for high-throughput screening and systematic...
journal_title：Plant physiology
pub_type： 杂志文章,评审
doi：
更新日期：2001-12-01 00:00:00
abstract：:Two inhibitory fractions (B(1) and C) from extracts of immature fruit of carob were tested for their ability to inhibit the action of indoleacetic acid (IAA) in three bioassays. There was no reduction of IAA-induced reactions in the Avena curvature test, abscission of debladed coleus petioles, or growth of cucumber hy...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.46.4.531
更新日期：1970-10-01 00:00:00
abstract：:Treatment of bean (Phaseolus vulgaris L.) seedlings with low levels of salinity (50 or 100 millimolar NaCl) decreased the rate of light-induced leaf cell expansion in the primary leaves over a 3 day period. This decrease could be due to a reduction in one or both of the primary cellular growth parameters: wall exten...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.88.1.233
更新日期：1988-01-01 00:00:00
