Abstract:
:EDDHA added in an optimal concentration (20.5 mumol.L-1) to a modified Pirson-Seidel nutrient solution induces flowering in some clones of the species Lemna minor, Lemna gibba and Spirodela polyrrhiza, which in the absence of EDDHA in the same nutrient solution do not flower. By adding EDDHA (20.5 mumol.L-1), floral induction under LD conditions is optimally promoted in the long-day (LD) species Lemna minor. After adding EDDHA to the nutrient solution, before floral induction and during flowering, Zn, Mn and Cu content is significantly increased in plants. Zn-EDDHA (0.86 mumol.L-1), Mn-EDDHA (1.51 mumol.L-1) and Cu-EDDHA (0.12 mumol.L-1), when used individually, greatly promote flowering under LD conditions as compared to flowering in the same nutrient solution with an equivalent quantity of Zn, Mn or Cu in the nonchelate form. If, on the other hand, Zn-EDDHA and Mn-EDDHA are added to the nutrient solution together (instead of Zn and Mn in nonchelate form), their effect on the promotion of flowering is less than in the case of their individual use. This shows that there is antagonism between Zn-EDDHA and Mn-EDDHA that is eliminated by adding EDDHA to the nutrient solution. We obtained the highest percentage of flowering plants (i.e. 74%) if we added EDDHA (20.5 mumol.L-1) to the nutrient solution containing Mn, Zn and Cu in chelate form. 74% of flowering plants actually means that flowering was achieved in all physiologically mature plants. Our results show that EDDHA promotes floral induction in Lemna minor under LD conditions, especially through chelating Zn, Mn and Cu, and, in addition, through eliminating the antagonism between Mn and Zn chelates EDDHA. Zn-EDDHA (0.86 mumol.L-1) also promote floral differentiation, especially cell division of microspore mother cells into dyads and those into microspore tetrads, which can be seen in microphotographs. When investigating possible pathways through which Mn-EDDHA, Zn-EDDHA and Cu-EDDHA promote flowering, we studied the effects of various concentrations of IAA and sucrose added to the nutrient solution as well. The results support the hypothesis that one of the possible pathways in which Mn-EDDHA promotes floral induction is through auxin oxidase, whereas Zn-EDDHA and Cu-EDDHA probably promote it through the enhancement of the photosynthesis and synthesis of sucrose.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
Krajncic B,Nemec Jdoi
10.1078/0176-1617-00794subject
Has Abstractpub_date
2003-02-01 00:00:00pages
143-51issue
2eissn
0176-1617issn
1618-1328pii
S0176-1617(04)70388-0journal_volume
160pub_type
杂志文章abstract::Apocarotenoids modulate vital physiological and developmental processes in plants. These molecules are formed by the cleavage of carotenoids, a reaction catalyzed by a family of enzymes called carotenoid cleavage dioxygenases (CCDs). Apocarotenoids like β-ionone and β-cyclocitral have been reported to act as stress si...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.11.001
更新日期:2015-09-15 00:00:00
abstract::To better understand the role of ethylene signaling in plant stress tolerance, salt-induced changes in gene expression levels of ethylene biosynthesis, perception and signaling genes were measured in Arabidopsis thaliana plants exposed to 15 days of salinity. Among the genes analyzed, EIN3 showed the highest expressio...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.11.007
更新日期:2012-03-01 00:00:00
abstract::Saliva miltiorrhiza ethylene response factor (SmERF), predicted to be expressed genome-wide, is the potential regulator of tanshinone biosynthesis. However, few studies have investigated its transcriptional regulation pathways in tanshinone biosynthesis. Here, we report an ethylene response factor (SmERF8), which was ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2019.153006
更新日期:2020-01-01 00:00:00
abstract::Calcium-dependent protein kinases (CDPKs) constitute a unique family of enzymes in plants that are characterized by a C-terminal calmodulin (CaM)-like domain. Through protein kinase assays, we have examined the levels of cucumber calcium-dependent kinase (CsCDPK) activity in various organs of cucumber seedlings and pl...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2003.11.010
更新日期:2004-08-01 00:00:00
abstract::Arbuscular mycorrhizal fungal (AMF) colonization can induce both the local and the systemic increase in phenolic accumulation in hosts. However, the signaling molecules responsible for the systemic induction is still unclear. In this study, a split-root rhizobox system was designed to explore these molecules, with one...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.01.016
更新日期:2015-04-15 00:00:00
abstract::We analyzed the cell wall proteome of lignifying suspension cell cultures (SCCs) from four gymnosperms that differ in evolution degree. This analysis showed the presence of "peptide sequence tags" (PSTs) corresponding to glucan endo-1,3-beta-D-glucosidase, xyloglucan-endotrans-glucosylase/hydrolase, chitinases, thauma...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2008.11.009
更新日期:2009-05-15 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
abstract::Estimates of mesophyll conductance (gm), when calculated from chlorophyll fluorescence, are uncertain, especially when the photosystem II (PSII) operating efficiency is measured from the traditional single saturation pulse methodology. The multiphase flash method has recently been recommended to replace the single sat...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2017.11.009
更新日期:2018-01-01 00:00:00
abstract::Pistacia chinensis Bunge (P. chinensis) is a deciduous and dioecious perennial arbor of the family Anacardiaceae that flowers from March to April and bears fruit from September to October. There are three rapidly growing stages in the annual growth process of P. chinensis. However, the knowledge of the secondary metab...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.11.014
更新日期:2016-02-01 00:00:00
abstract::In bright sunlight photosynthetic activity is limited by the enzymatic machinery of carbon dioxide assimilation. This supererogation of energy can be easily visualized by the significant increases of photosynthetic activity under high CO(2) conditions or other metabolic strategies which can increase the carbon flux fr...
journal_title:Journal of plant physiology
pub_type: 杂志文章,评审
doi:10.1016/j.jplph.2010.07.012
更新日期:2011-01-15 00:00:00
abstract::Plant natriuretic peptides (PNPs) belong to a novel class of peptidic signaling molecules that share some structural similarity to the N-terminal domain of expansins and affect physiological processes such as water and ion homeostasis at nano-molar concentrations. Here we show that a recombinant Arabidopsis thaliana P...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.03.011
更新日期:2011-09-15 00:00:00
abstract::Somatic embryogenesis was initiated in immature embryos of rye (Secale cereale L.) cultured on Murashige and Skoog's (1962) medium supplemented with various concentrations of 2,4-D and sucrose. The developmental stage of the embryo (optimal embryo length 0.5-2.0 mm) and concentration of 2,4-D (optimal concentration 2....
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/S0176-1617(84)80126-1
更新日期:1984-07-01 00:00:00
abstract::Bienertia sinuspersici performs single cell C4 photosynthesis without Kranz anatomy. Peripheral and central cytoplasmic compartments in a single chlorenchyma cell act as mesophyll cells and bundle sheath cells. Development of this specialized mechanism is gradual during plant development. Young leaves perform C3 photo...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2017.10.006
更新日期:2018-01-01 00:00:00
abstract::Seedlings of Cleopatra mandarin (Citrus reshni Hort. ex Tan.) and Alemow (Citrus macrophylla Wester) were inoculated with a mixture of AM fungi (Rhizophagus irregularis and Funneliformis mosseae) (+AM), or left non-inoculated (-AM). From forty-five days after fungal inoculation onwards, half of +AM or -AM plants were ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2013.06.006
更新日期:2014-01-01 00:00:00
abstract::Impacts of electric and magnetic fields (EFs and MFs) on a biological organism vary depending on their application style, time, and intensities. High intensity MF and EF have destructive effects on plants. However, at low intensities, these phenomena are of special interest because of the complexity of plant responses...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2012.03.011
更新日期:2012-07-15 00:00:00
abstract::Sun (Chrysanthemum morifolium) and shade (Spathiphyllum wallisii) plants were used to study the effects of drought, heat and high illumination. The stress conditions caused a greater accumulation of hydrogen peroxide in Chrysanthemum morifolium than in Spathiphyllum wallisii leaves. They also resulted in down-regulati...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2009.12.013
更新日期:2010-06-15 00:00:00
abstract::Germination is a complex process, highly dependent on various environmental factors, including temperature and water availability. Germinating soybean seeds are especially vulnerable to unfavorable environmental conditions and exposure to long-term abiotic stresses may result in diminishing much of the yield and most ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2012.11.020
更新日期:2013-03-15 00:00:00
abstract::Hyacinth (Hyacinthus orientalis) bulbs infected by Fusarium oxysporum showed the symptoms of gummosis. The purpose of this study was to clarify the hormonal regulation of gummosis and composition of gums from hyacinth bulbs. The application of ethephon (2-chloroethylphosphonic acid), an ethylene-releasing compound, at...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2014.10.007
更新日期:2015-02-01 00:00:00
abstract::The relationships among photosynthetic acclimation, proline (Pro), soluble sugar (SS), and anthocyanin (An) accumulation in Arabidopsis thaliana leaves to the onset of drought stress (OnDS), mild (MiDS) and moderate drought stress (MoDS), were evaluated. As leaf water content (LWC) decreased, metabolic concentrations ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.12.015
更新日期:2012-04-15 00:00:00
abstract::Rice (Oryza sativa L.) ssp. indica is the most cultivated species in the South of Brazil. However, these plants face low temperature stress from September to November, which is the period of early sowing, affecting plant development during the initial stages of growth, and reducing rice productivity. This study aimed ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2020.153307
更新日期:2020-12-01 00:00:00
abstract::The present study was undertaken to test the influence of exogenously applied 10nM brassinolide (BL) on the abscisic acid (ABA) content in Chlorella vulgaris cultures subjected to short-term (3h) heat stress (30-40 degrees C). We found that BL enhanced the ABA content with increase in temperature. In parallel, under t...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2008.10.004
更新日期:2009-05-15 00:00:00
abstract::Oxidative stress and ultrastructural changes under hexavalent chromium stress were investigated in developing rice seedlings. Chromium treatment for 24 or 48h resulted in inhibition of root length and dry biomass. Atomic absorption spectrometry analysis of roots showed that chromium accumulation increased with increas...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2007.01.012
更新日期:2007-11-01 00:00:00
abstract::The effect of three sugars and their amino derivatives on violaxanthin cycle enzymes activity was investigated in duckweed (Lemna trisulca), a model water-plant. No effect of sugars and amino sugars on violaxanthin de-epoxidase was observed independent of incubation time; however, epoxidation of zeaxanthin to violaxan...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2006.09.003
更新日期:2007-03-01 00:00:00
abstract::Durian (Durio zibethinus) fruit was harvested at the commercially mature stage and stored at 25°C. Durian fruit have 3-5 longitudinal dehiscence zones (DZs) in the peel, which are up to 40cm long and 2cm thick in large fruit. Dehiscence started a week after harvest, was hastened by exogenous ethylene, and delayed by 1...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.04.005
更新日期:2015-06-15 00:00:00
abstract::Zinc (Zn), an essential micronutrient, is absorbed by plant roots and redistributed to leaves. This process must be finely regulated in order to avoid toxic Zn2+ overaccumulation, which can arise due to Zn2+ oversupply or Zn2+ hyperaccumulation induced by Fe2+ deficiency. Although several proteins in Arabidopsis thali...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2020.153296
更新日期:2021-01-01 00:00:00
abstract::Four-day-old etiolated cucumber seedlings (Cucumis sativus L.) were transferred to cool-white-fluorescent light (15 mumol m-2 s-1) for 1 h and 24 hours and etiochloroplasts and chloroplasts were isolated from developing cotyledons. Plastids were fractionated to stroma, envelope and thylakoid or inner membranes and the...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1078/0176-1617-00848
更新日期:2003-01-01 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::We previously isolated Nicotiana benthamiana matrix metalloprotease 1 (NMMP1) from tobacco leaves. The NMMP1 gene encodes a highly conserved, Zn-containing catalytic protease domain that functions as a factor in the plant's defense against bacterial pathogens. Expression of NMMP1 was strongly induced during interactio...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2017.08.010
更新日期:2017-11-01 00:00:00
abstract::The effects of high salinity (0-400 mmol/L NaCl) on photosystem II (PSII) photochemistry and photosynthetic pigment composition were investigated in the halophyte Artimisia anethifolia grown under outdoor conditions and exposed to full sunlight. High salinity resulted in an inhibition in plant growth and a significant...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1078/0176-1617-00839
更新日期:2003-04-01 00:00:00
abstract::The present study was designed to determine the interactive effect of exogenous melatonin and nitric oxide (NO) on sodic alkaline stress mitigation in tomato seedlings. It was observed that exogenous melatonin treatment elevated NO levels in alkaline-stressed tomato roots. However, exogenous NO had little effects on m...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.07.012
更新日期:2015-08-15 00:00:00