Responses of Lemna trisulca L. (Duckweed) exposed to low doses of cadmium: thiols, metal binding complexes, and photosynthetic pigments as sensitive biomarkers of ecotoxicity.

abstract：:Although rather inconspicuous, movements are an important adaptive trait of plants. Consequently, light- or gravity-induced movements leading to organ bending have been studied intensively. In the field, however, plant movements often result in organ twisting rather than bending. This study investigates the mechanism ...

journal_title：Protoplasma

authors： Borchers A,Deckena M,Buschmann H

更新日期：2018-09-01 00:00:00

abstract：:Superoxide dismutase (SOD) activities of the oomycete Phytophthora cinnamomi were examined. Five polypeptides with manganese superoxide dismutase (MnSOD) activity were found in mycelium growing in liquid culture with relative molecular weights ranging from approximately 25 to 100 kDa. Comparison with characterized avo...

journal_title：Protoplasma

authors： Guzmán-Deara J,Reyes-De la Cruz H,Beltrán-Peña EM,Castro-Mercado E,García-Pineda E

更新日期：2013-06-01 00:00:00

abstract：:We discuss models for production of tubulin flux in kinetochore microtubules. Current models concentrate solely on microtubules and their associated motors and enzymes. For example, in some models the driving force for flux is enzymes at the poles and the kinetochores; in others the driving force is motor molecules th...

journal_title：Protoplasma

authors： Forer A,Pickett-Heaps JD,Spurck T

更新日期：2008-01-01 00:00:00

abstract：:A survey is presented of the architecture of secondary wall ingrowths in transfer cells from various taxa based on scanning electron microscopy. Wall ingrowths are a distinguishing feature of transfer cells and serve to amplify the plasma membrane surface area available for solute transport. Morphologically, two categ...

journal_title：Protoplasma

authors： Talbot MJ,Offler CE,McCurdy DW

更新日期：2002-05-01 00:00:00

abstract：:Octanal is a potential alternative to chemical fungicides in controlling postharvest disease of citrus fruit. In this study, the antifungal activity and the underlying mechanism of octanal against spore germination of Penicillium digitatum, one of the main postharvest pathogens in citrus, were investigated. Results sh...

journal_title：Protoplasma

authors： Dou S,Liu S,Xu X,OuYang Q,Tao N

更新日期：2017-07-01 00:00:00

abstract：:The present investigation analyzes the in vitro P solubilization [Ca-P, Al-P, Fe(II)-P, and Fe(III)-P] efficiency of native PSB strains from acid soils of Odisha and exploitation of the same through biofertilization in peanut (Arachis hypogaea L.) growth and P acquisition. One hundred six numbers of soil samples with ...

journal_title：Protoplasma

authors： Pradhan M,Sahoo RK,Pradhan C,Tuteja N,Mohanty S

更新日期：2017-11-01 00:00:00

abstract：:The potential genotoxicity of Cu(2+) was investigated in Vicia faba and Pisum sativum seedlings in hydroponic culture conditions. Cu(2+) caused a dose-dependent increase in micronuclei frequencies in both plant models. Cytological analysis of root tips cells showed clastogenic and aneugenic effects of this heavy metal...

journal_title：Protoplasma

authors： Souguir D,Ferjani E,Ledoigt G,Goupil P

更新日期：2008-11-01 00:00:00

abstract：:Unconventional protein secretion (UPS) is a collective term for mechanisms by which cytosolic proteins that lack a signal peptide ("leaderless secretory proteins" (LSPs)) can gain access to the cell exterior. Numerous examples of UPS have been well documented in animal and yeast cells. In contrast, our understanding o...

journal_title：Protoplasma

authors： Robinson DG,Ding Y,Jiang L

更新日期：2016-01-01 00:00:00

abstract：:Capitate glandular trichomes (CGT) of sunflower, Helianthus annuus, synthesize bioactive sesquiterpene lactones (STLs) within a short period of only a few days during trichome development. In the current project, the subcellular localization of H. annuus germacrene A monooxygenase (HaGAO), a key enzyme of the STL bios...

journal_title：Protoplasma

authors： Amrehn E,Aschenbrenner AK,Heller A,Spring O

更新日期：2016-03-01 00:00:00

abstract：:The mitotic chromosome structure of 45S rDNA site gaps in Lolium perenne was studied by atomic force microscope (AFM) combining with fluorescence in situ hybridization (FISH) analysis in the present study. FISH on the mitotic chromosomes showed that 45S rDNA gaps were completely broken or local despiralizations of the...

journal_title：Protoplasma

authors： Huang J,Ma L,Sundararajan S,Fei SZ,Li L

更新日期：2009-07-01 00:00:00

abstract：:Catchweed bedstraw is famous for its ability to adhere to other objects due to the presence of numerous trichomes surrounding the stem and mericarps and on the surfaces of the leaves. These trichomes serve as an efficient vector for the movement of the propagules via animals. In this study, we examined the structure a...

journal_title：Protoplasma

authors： Bowling AJ,Maxwell HB,Vaughn KC

更新日期：2008-11-01 00:00:00

abstract：:In the genus Genlisea as well as in its sister genus Utricularia, the palate probably plays a key role in providing the colour, mechanical and olfactory stimuli to attract insect pollinators and to guide them to the generative structures and the nectary spur. However, information about the micro-morphology of the pala...

journal_title：Protoplasma

authors： Płachno BJ,Świątek P,Stpiczyńska M,Miranda VFO

更新日期：2018-07-01 00:00:00

abstract：:The effects of the calcium sequester EGTA on gravitactic orientation and membrane potential changes in the unicellular flagellate Euglena gracilis were investigated during a recent parabolic-flight experiment aboard of an Airbus A300. In the course of a flight parabola, an acceleration profile is achieved which yields...

journal_title：Protoplasma

authors： Richter PR,Schuster M,Meyer I,Lebert M,Häder DP

更新日期：2006-12-01 00:00:00

abstract：:Previous complementation of a chitin synthase class Vb null mutant (Colletotrichum graminicola chsA) indicated that the encoded protein is responsible for approximately 30% of the conidial chitin, is essential for conidial wall strength in media with high water potential, and contributes to strength of hyphal tips. We...

journal_title：Protoplasma

authors： Amnuaykanjanasin A,Epstein L

更新日期：2006-05-01 00:00:00

abstract：:Agrobacterium-mediated transformation of chickpea (Cicer arietinum L.) has been performed using cotyledonary node explants (CNs), which release phenolics upon excision that are detrimental to the viability of Agrobacterium tumefaciens and result in low transformation frequency. Twelve low molecular weight phenolic com...

journal_title：Protoplasma

authors： Yadav R,Mehrotra M,Singh AK,Niranjan A,Singh R,Sanyal I,Lehri A,Pande V,Amla DV

更新日期：2017-01-01 00:00:00

abstract：:Here we present an overview of what is known about endogenous plant compounds that act as inhibitors of hormonal transport processes in plants, about their identity and mechanism of action. We have also summarized commonly and less commonly used compounds of non-plant origin and synthetic drugs that show at least part...

journal_title：Protoplasma

authors： Klíma P,Laňková M,Zažímalová E

更新日期：2016-11-01 00:00:00

abstract：:Pollen developmental pathway in plants involving synchronized transferal of cellular divisions from meiosis (microsporogenesis) to mitosis (pollen mitosis I/II) eventually offers a unique "meiosis-mitosis shift" at pollen mitosis I. Since the cell type (haploid microspore) and fate of pollen mitosis I differ from typi...

journal_title：Protoplasma

authors： Sharma SK,Yamamoto M,Mukai Y

更新日期：2017-01-01 00:00:00

abstract：:Despite more than 130 years of research, phloem loading is far from being understood in gymnosperms. In part this is due to the special architecture of their leaves. They differ from angiosperm leaves among others by having a transfusion tissue between bundle sheath and the axial vascular elements. This article review...

journal_title：Protoplasma

authors： Liesche J,Martens HJ,Schulz A

更新日期：2011-01-01 00:00:00

abstract：:The terrestrial carnivorous species Utricularia dichotoma is known for a great phenotypic plasticity and unusual vegetative organs. Our investigation on 22 sources/populations revealed that after initiation of a leaf and two bladders on a stolon, a bud was formed in the proximal axil of the leaf, developing into a ros...

journal_title：Protoplasma

authors： Reut MS,Płachno BJ

更新日期：2020-03-01 00:00:00

abstract：:Autophagy is an important mechanism for recycling cell materials upon encountering stress conditions. Our previous studies had shown that TMV infection could lead to systemic PCD in the distal uninfected tissues, including root tip and shoot tip tissues. But it is not clear whether there is autophagy in the distal api...

journal_title：Protoplasma

authors： Zhou S,Hong Q,Li Y,Li Q,Li R,Zhang H,Wang M,Yuan X

更新日期：2018-01-01 00:00:00

abstract：:Here, we describe the development of chloroplasts and the buildup of the thylakoid membranes in growing Arabidopsis leaves. Organelles were analyzed from three distinct positions, namely, at the tip, the upper leaf margin, and the base from leaves 1, 3, 5, and 7 of 14-day-old plants. Clear developmental gradients are ...

journal_title：Protoplasma

authors： Gügel IL,Soll J

更新日期：2017-09-01 00:00:00

abstract：:The ultrastructure of the several micrometers thick cytoplasmic layer of the giant marine alga Valonia utricularis displays characteristics which are apparently linked with the capability of this alga to regulate turgor pressure. Transmission and scanning electron microscopy of cells prefixed in different ways, includ...

journal_title：Protoplasma

authors： Mimietz S,Heidecker M,Krohne G,Wegner LH,Zimmermann U

更新日期：2003-01-01 00:00:00

abstract：:The actin-nucleating and -organizing Arp2/3 protein complex is well known to be conserved throughout the eukaryotic kingdom. For higher plants, however, only limited evidence is available for the presence of the Arp2/3 complex so far. Using heterologous antibodies against the Dictyostelium discoideum and Schizosacchar...

journal_title：Protoplasma

authors： Van Gestel K,Slegers H,Von Witsch M,Samaj J,Baluska F,Verbelen JP

更新日期：2003-09-01 00:00:00

abstract：:Proper mitochondrial morphogenesis is crucial for successful development of motile sperm. It was known that recessive Drosophila melanogaster mutation emm caused anomalies in the formation of a mitochondrial derivative--nebenkern and led to male sterility. Here we identified primary mutation effect and showed that emm...

journal_title：Protoplasma

authors： Dorogova NV,Bolobolova EU,Akhmetova KA,Fedorova SA

更新日期：2013-04-01 00:00:00

abstract：:Temperatures above the optimum are sensed as heat stress (HS) by all living organisms and represent one of the major environmental challenges for plants. Plants can cope with HS by activating specific defense mechanisms to minimize damage and ensure cellular functionality. One of the most common effects of HS is the o...

journal_title：Protoplasma

authors： Malerba M,Cerana R

更新日期：2018-07-01 00:00:00

abstract：:This article deals with the distribution of callose and of the homogalacturonan (HG) epitopes recognized by LM20, JIM5, and 2F4 antibodies in cell walls of differentiating and functioning stomatal complexes of the monocotyledon Zea mays and the dicotyledon Vigna sinensis. The findings revealed that, during stomatal de...

journal_title：Protoplasma

authors： Giannoutsou E,Sotiriou P,Nikolakopoulou TL,Galatis B,Apostolakos P

更新日期：2020-01-01 00:00:00

abstract：:Drought tolerance is a complex trait that is governed by multiple genes. The study presents differential transcriptome analysis between drought-tolerant (Triticum aestivum Cv. C306) and drought-sensitive (Triticum aestivum Cv. WL711) genotypes, using Affymetrix GeneChip® Wheat Genome Array. Both genotypes exhibited di...

journal_title：Protoplasma

authors： Kumar J,Gunapati S,Kianian SF,Singh SP

更新日期：2018-09-01 00:00:00

abstract：:It is well established that cytoplasmic microtubules are depolymerized during nuclear division and reassembled as mitotic microtubules. Mounting evidence showing that cytoplasmic microtubules were also involved in apical growth of fungal hyphae posed the question of whether apical growth became disrupted during nuclea...

journal_title：Protoplasma

authors： Riquelme M,Fischer R,Bartnicki-García S

更新日期：2003-01-01 00:00:00

abstract：:Using higher-resolution wide-field computational optical-sectioning fluorescence microscopy, the distribution of antigens recognized by antibodies against animal beta 1 integrin, fibronectin, and vitronectin has been visualized at the outer surface of enzymatically protoplasted onion epidermis cells and in depectinate...

journal_title：Protoplasma

authors： Gens JS,Reuzeau C,Doolittle KW,McNally JG,Pickard BG

更新日期：1996-01-01 00:00:00

abstract：:The cereal starch endosperm is the central part of endosperm, and it is rich in starch and protein which are the important resources for human food. The starch and protein are separately accumulated in starch granules and protein bodies. Content and configuration of starch granules and protein bodies affect the qualit...

journal_title：Protoplasma

authors： Zheng Y,Wang Z

更新日期：2015-01-01 00:00:00