Abstract：
:In studies on the mechanism of cell separation during abscission, little attention has been paid to the apoplastic environment. We found that the apoplastic pH surrounding abscission zone cells in detached roots of the water fern Azolla plays a major role in cell separation. Abscission zone cells of detached Azolla roots were separated rapidly in a buffer at neutral pH and slowly in a buffer at pH below 4.0. However, cell separation rarely occurred at pH 5.0-5.5. Light and electron microscopy revealed that cell separation was caused by a degradation of the middle lamella between abscission zone cells at both pH values, neutral and below 4.0. Low temperature and papain treatment inhibited cell separation. Enzyme(s) in the cell wall of the abscission zone cells might be involved in the degradation of the pectin of the middle lamella and the resultant, pH-dependent cell separation. By contrast, in Phaseolus leaf petioles, unlike Azolla roots, cell separation was slow and increased only at acidic pH. The rapid cell separation, as observed in Azolla roots at neutral pH, did not occur. Indirect immunofluorescence microscopy, using anti-pectin monoclonal antibodies, revealed that the cell wall pectins of the abscission zone cells of Azolla roots and Phaseolus leaf petioles looked similar and changed similarly during cell separation. Thus, the pH-related differences in cell separation mechanisms of Azolla and Phaseolus might not be due to differences in cell wall pectin, but to differences in cell wall-located enzymatic activities responsible for the degradation of pectic substances. A possible enzyme system is discussed.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
Fukuda K,Yamada Y,Miyamoto K,Ueda J,Uheda Edoi
10.1016/j.jplph.2012.08.008subject
Has Abstractpub_date
2013-01-01 00:00:00pages
18-24issue
1eissn
0176-1617issn
1618-1328pii
S0176-1617(12)00331-8journal_volume
170pub_type
杂志文章abstract：:Nodule conductance to O2 diffusion has been involved as a major factor of the inhibition of N2 fixation by soil salinity that severely reduces the production of grain legumes. In order to determine the effect of this constraint on the nodule conductance, oxygen uptake by the nodulated roots of Cicer arietinum was meas...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2006.05.016
更新日期：2007-08-01 00:00:00
abstract：:A metabolomics approach using (1)H NMR and GC-MS profiling of primary metabolites and quantification of adenine nucleotides with luciferin bioluminescence was employed to investigate the spatial changes of metabolism in melon fruit. Direct (1)H NMR profiling of juice collected from different locations in the fruit fle...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2009.08.010
更新日期：2010-02-15 00:00:00
abstract：:The formation of radical species was examined in roots of soybean seedlings exposed to aluminum (Al). Electron spin resonance (ESR) spectra of root homogenates with the spin-trapping reagent 5-diethoxyphosphoryl-5-methyl-1-pyrroline-N-oxide (DEPMPO) indicated the presence of carbon-centered radicals in plants not expo...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2010.04.003
更新日期：2010-10-15 00:00:00
abstract：:This paper describes the cloning of the ornithine decarboxylase gene from a red seaweed, Grateloupia imbricata (Rhodophyta), the characterization of its expression throughout the reproductive process, and demonstrates how polyamines are involved in seaweed reproduction. In addition, the data indicate that the basal pe...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2009.04.018
更新日期：2009-11-01 00:00:00
abstract：:Common bean, one of the most important legumes for human consumption, may have drastic reduction in yield due to anthracnose, a disease caused by the fungus Colletotrichum lindemuthianum. Rapid induction of the plant defense mechanisms is essential to establish an incompatible interaction with this pathogenic fungus. ...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2012.04.003
更新日期：2012-08-15 00:00:00
abstract：:In rose flowers, 2-phenylethanol (2PE) is biosynthesized from l-phenylalanine (l-Phe) via phenylacetaldehyde (PAld) by the actions of two enzymes, pyridoxal-5'-phosphate (PLP)-dependent aromatic amino acid decarboxylase (AADC) and phenylacetaldehyde reductase (PAR). We here report that Rosa 'Yves Piaget' aromatic amin...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2011.12.005
更新日期：2012-03-15 00:00:00
abstract：:1-Deoxy-d-xylulose 5-phosphate reductoisomerase (DXR, EC: 1.1.1.267) is the second enzyme in the 2C-methyl-d-erythritol 4-phosphate (MEP) pathway, one of the two pathways in plants that can produce isoprenoids. The MEP pathway is the source of isoprene emitted from leaves, but rubber production is believed to result p...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2007.06.014
更新日期：2008-06-16 00:00:00
abstract：:Mesophyll mitochondria from green leaves of the C(4) plants Zea mays (NADP-ME-type), Panicum miliaceum (NAD-ME-type) and Panicum maximum (PEP-CK-type) oxidized NADH, malate and succinate at relatively high rates with respiratory control, but glycine was not oxidized. Among the mitochondrial proteins involved in glycin...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2007.07.015
更新日期：2008-07-07 00:00:00
abstract：:Nod factors (Lipo-chitooligosaccharides, or LCOs) act as bacteria-to-plant signal molecules that modulate early events of the Bradyrhizobium-soybean symbiosis. It is known that low root zone temperature inhibits the early stages of this symbiosis; however, the effect of low soil temperature on bacteria-to-plant signal...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2005.04.029
更新日期：2006-01-01 00:00:00
abstract：:We describe the application of a novel genome walking (GW) strategy for the one-shot identification of members of multigene families. The method was used to study the spinach Lhcb1 family (encoding the light harvesting complex protein Lhcb1), for which three cDNAs were known. Two additional genes and regulatory region...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2009.06.020
更新日期：2010-01-15 00:00:00
abstract：:Eight cultivars of rice (Oryza sativa L.) inhibited shoot and root growth of Echinochloa crus-galli when co-cultured with rice seedlings in a bioassay medium. Momilactone A and B were found in the bioassay medium of all rice cultivars, and concentrations of momilactone A and B in the medium were 0.21-1.5 and 0.66-3.8 ...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2010.01.014
更新日期：2010-07-01 00:00:00
abstract：:The endophytic Bacillus amyloliquefaciens YTB1407 was previously reported to promote the growth of sweet potato (Ipomoea batatas cv. Yanshu 25). Here, we demonstrate in both in vitro and pot trial assays that pre-treatment with YTB1407 suspension could enhance resistance against root rot disease and black rot disease,...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2020.153260
更新日期：2020-10-01 00:00:00
abstract：:To investigate the involvement of cytochrome P450s in the metabolism of plants treated with xenobiotic agrochemicals, bean leaves were treated with 3,5-dichlorosalicylic acid (DC-SA), a priming agent of plant defense and 2,6-dichloroisonicotinic acid (DC-INA), a chemical inducer of systemic acquired resistance. Throug...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2006.02.006
更新日期：2007-04-01 00:00:00
abstract：:Grazing is accompanied by a multitude of processes including wounding, saliva deposition, and defoliation. Previous studies have focused on the effects of the grazing or clipping intensity on plant regrowth, survival, and composition in the grassland. However, the impact of saliva deposition on plants is poorly unders...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2010.08.012
更新日期：2011-03-15 00:00:00
abstract：:Pokkah boeng disease (PBD) is a foliar disease causing severe losses in sugarcane crop production. Research into resistance mechanisms against the causal agent, Fusarium verticillioides, is particularly important for farmers and researchers. This work based on the comprehensive analysis of metabolic, proteomic, and bi...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2020.153207
更新日期：2020-08-01 00:00:00
abstract：:We observed the release of the benzoxazinoids defense molecules on the surface of the primary root and the coleoptilar node in Zea mays during the emergence of lateral- and crown-roots, respectively. At later stages of crown root and lateral root development, benzoxazinoids around the emerged roots were no longer obse...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2004.01.005
更新日期：2004-08-01 00:00:00
abstract：:In our previous study we showed that volatile organic compounds (VOCs) from Alcaligenes faecalis JBCS1294 (JBCS1294) induced tolerance to salt stress in Arabidopsis thaliana by influencing the auxin and gibberellin pathways and upregulating the expression of key ion transporters. The aim of this study was to evaluate ...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2017.04.002
更新日期：2017-07-01 00:00:00
abstract：:A non-destructive nitrogen (N) detector [Agriexpert PPW-3000 (PPW-3000)] is a useful device for rapid and non-destructive measurement of leaf N content. However, some studies find a poor correlation between the PPW-3000 reading and the actual leaf N content; the R2 value of the approximate equation was low. To improve...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2005.09.004
更新日期：2006-04-01 00:00:00
abstract：:The study was performed in order to investigate a simple, efficient, reliable and rapid method of extracting and quantifying natural vitamin E for pressurized liquid extraction (PLE) as well as high-performance liquid chromatography (HPLC) analysis. Lyophilized Corylus avellana L. nut samples were powdered by high-spe...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2005.04.018
更新日期：2005-11-01 00:00:00
abstract：:Physiological diversification reflects adaptation for specific environmental challenges. As the major physiological process that provides plants with carbon and energy, photosynthesis is under strong evolutionary selection that gives rise to variability in nearly all parts of the photosynthetic apparatus. Here, we dis...
journal_title：Journal of plant physiology
pub_type： 杂志文章,评审
doi：10.1016/j.jplph.2014.07.024
更新日期：2015-01-01 00:00:00
abstract：:A cold-tolerant line (NY-1) and a cold-sensitive cultivar (Jinyan 4) of cucumber (Cucumis sativus) were treated with temperatures of 28 degrees C/22 degrees C or 28 degrees C/12 degrees C (day/night) in a 10-h photoperiod. Carbohydrates and related enzymes were assayed from 0 to 4 h after the start of the dark period....
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2006.02.005
更新日期：2007-05-01 00:00:00
abstract：:Salicylic acid (SA) is known to affect photosynthesis under normal conditions and induces tolerance in plants to biotic and abiotic stresses through influencing physiological processes. In this study, physiological processes were compared in salt-tolerant (Pusa Vishal) and salt-sensitive (T44) cultivars of mungbean an...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2010.11.001
更新日期：2011-05-15 00:00:00
abstract：:Fruit trees are likely to suffer from the effects of severe drought in the future; however, sound criteria for evaluating the species' ability to survive these extreme conditions are largely missing. Here, we evaluated the feasibility of using xylem cavitation resistance as a tool for screening Prunus species for drou...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2007.07.020
更新日期：2008-06-16 00:00:00
abstract：:Lipoxygenases (LOXs) (EC 1.13.11.12) catalyze the oxygenation of fatty acids and produce oxylipins including the plant hormone jasmonate (jasmonic acid/methyl jasmonate; MeJA). Little is known about the tomato LOX gene family members that impact tomato growth and development, and less so about their feed-back regulati...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2018.10.001
更新日期：2018-12-01 00:00:00
abstract：:Replacement of N(2) by argon in the air around nodules directs nitrogenase electron flow in its total onto H(+) resulting in increased nodule H(2) evolution (total nitrogenase activity (TNA)). However, argon application induces a so-called argon-induced decline in nitrogenase activity (Ar-ID) connected with decreased ...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2010.03.014
更新日期：2010-09-01 00:00:00
abstract：:Changes in plasma membrane lipids, such as sterols and fatty acids, have been observed as a result of salt stress. These alterations, together with modification of the plasma membrane protein profile, confer changes in the physical properties of the membrane to be taken into account for biotechnological uses. In our e...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2014.12.003
更新日期：2015-03-01 00:00:00
abstract：:The plant secondary metabolism generates numerous compounds harbouring pharmaceutical activity. In plants, these compounds are typically formed by different and specialised cell types that have to interact constituting a metabolic process chain. This interactivity impedes biotechnological production of secondary compo...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2016.06.004
更新日期：2016-08-01 00:00:00
abstract：:Chlorophyll b (Chlb) is an antenna chlorophyll. The binding of Chlb by antenna proteins is crucial for the correct assembly of the antenna complexes in thylakoid membranes. Since the levels of the proteins of major and minor antenna are affected to different extents by Chlb binding, the availability of Chlb influences...
journal_title：Journal of plant physiology
pub_type： 杂志文章,评审
doi：10.1016/j.jplph.2015.09.013
更新日期：2015-09-15 00:00:00
abstract：:This study demonstrates the impact of lead at hormetic (0.075 mM Pb(NO3)2) and sublethal (0.5 mM Pb(NO3)2) doses on the intensity of oxidative stress in pea seedlings (Pisum sativum L. cv. 'Cysterski'). Our first objective was to determine how exposure of pea seedlings to Pb alters the plant defence responses to pea a...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2019.152996
更新日期：2019-09-01 00:00:00
abstract：:A single polypeptide catalysing the two step conversion of orotate to UMP in cultured tomato cells was purified to near homogeneity as judged by analytical disc gel electrophoresis. After electrophoresis of the dodecyl sulphate denaturated enzyme one single protein band appeared from which both enzyme activities could...
journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/S0176-1617(84)80109-1
更新日期：1984-01-01 00:00:00
