Abstract：
:In this study, the filamentous green alga Zygogonium ericetorum (Zygnematales, Chlorophyta), collected at its natural habitat in the high alps, was investigated by light, scanning, and transmission electron microscopy. The field samples were separated into a moist fraction when wetted by splattering water of a nearby spring or a desiccated one when visually dried out. Light microscopy demonstrated a purple pigmentation of the sun-exposed upper layers, the central position of the nucleus, and the starch content in the pyrenoids. The smooth surface of the cells occasionally covered with fungal hyphae was shown by scanning electron microscopy. The cytoarchitecture of moist cells revealed many vacuoles and only a thin cytoplasmic area surrounding the two chloroplasts. The secondary cell walls of older cells were up to 4 microm thick. Organelle membranes as well as thylakoid membranes occasionally showed an inversion of contrast. In the chloroplasts, distinct areas with granular content surrounding the pyrenoids were detected. Within the cytoplasm, electron-dense particles with electron-translucent crystalloid structures were observed. When desiccated samples were investigated, the vacuoles and cytoplasmatic portions appeared destroyed, whereas nucleus and chloroplasts generally remained intact. The thylakoid membranes of desiccated samples showed lumen dilatations and numerous plastoglobules. Water-soluble extracts were separated by high-pressure liquid chromatography that revealed two major compounds with UV-absorbing capacities.
journal_name
Protoplasmajournal_title
Protoplasmaauthors
Holzinger A,Tschaikner A,Remias Ddoi
10.1007/s00709-009-0048-5subject
Has Abstractpub_date
2010-07-01 00:00:00pages
15-24issue
1-4eissn
0033-183Xissn
1615-6102journal_volume
243pub_type
杂志文章相关文献
PROTOPLASMA文献大全abstract：:In this paper, two transgenic wheat lines, PC27 and PC51, containing the maize PEPC gene and its wild-type (WT) were used as experimental material to study the effects of high temperature on their photosynthetic physiological characteristics and metabolome. The results showed that transgenic wheat lines had higher pho...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1010-y
更新日期：2017-03-01 00:00:00
abstract：:Despite great efforts in tissue engineering of the ureter, urinary bladder, and urethra, further research is needed in order to improve the patient's quality of life and minimize the economic burden of different lower urinary tract disorders. The nanostructured titanium dioxide (TiO2) scaffolds have a wide range of cl...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0896-0
更新日期：2016-11-01 00:00:00
abstract：:Dehydroleucodine is a sesquiterpene lactone recently isolated from aerial parts of a medicinal herb, Artemisia douglasiana Besser. We have previously shown that 25 and 100 microM dehydroleucodine slowed down onion root growth by 30 and 70%, respectively, affecting neither cell viability nor cell elongation. In the pre...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s007090200008
更新日期：2002-02-01 00:00:00
abstract：:Sugarcane shows reduced crop stand under relatively suboptimal conditions; the main reason for this is its sensitivity to ionic stress in the soil solution. This research was performed to explore some physiological and developmental changes in the immature sugarcane buds submitted to salt stress and possible role of g...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0841-2
更新日期：2016-05-01 00:00:00
abstract：:Plant embryogenesis is regulated by differential distribution of the plant hormone auxin. However, the cells establishing these gradients during microspore embryogenesis remain to be identified. For the first time, we describe, using the DR5 or DR5rev reporter gene systems, the GFP- and GUS-based auxin biosensors to m...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0616-1
更新日期：2014-09-01 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
pub_type： 杂志文章
doi：10.1007/BF01882029
更新日期：1996-01-01 00:00:00
abstract：:The morphogenesis of galls occurs by the redifferentiation of cells that assume new functions in the modified host plant organs. The redifferentiated cells in the galls of Nothotrioza myrtoidis on Psidium myrtoides have low complexity metabolism and are photosynthesis-deficient. These galls were studied in search for ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0709-x
更新日期：2015-03-01 00:00:00
abstract：:Various stresses such as starvation and cold or heat shocks have been identified as triggers in the induction of the microspore embryogenesis. This study attempts to quantify the effects of different pretreatment conditions for successful microspore culture of malting barley (cv. Scarlett). While the sporophytic micro...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-006-0179-x
更新日期：2006-08-01 00:00:00
abstract：:Cell polarity, the asymmetric organization of cellular components along one or multiple axes, is present in most cells. From budding yeast cell polarization induced by pheromone signaling, oocyte polarization at fertilization to polarized epithelia and neuronal cells in multicellular organisms, similar mechanisms are ...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-017-1075-2
更新日期：2017-05-01 00:00:00
abstract：:The extent to which the actomyosin motor responsible for cytoplasmic streaming contributes to the translational diffusion of water in Elodea canadensis cells was studied by a nuclear magnetic resonance (NMR) spin-echo technique. The relative contribution of the actomyosin motor was determined from the corresponding ap...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-004-0067-1
更新日期：2004-12-01 00:00:00
abstract：:This paper reports an efficient protoplast culture technique, the "extra thin alginate film" technique. The development of this improved method of protoplast culture was an outcome of an assessment of the efficiency and shortcomings of various protoplast culture techniques. The efficiency of this technique was evaluat...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-005-0096-4
更新日期：2005-12-01 00:00:00
abstract：:The differentiation of the corneous layers of lizard epidermis has been analyzed by ultrastructural immunocytochemistry using specific antibodies against alpha-keratins and keratin associated beta-proteins (KAbetaPs, formerly indicated as beta-keratins). Both beta-cells and alpha-cells of the corneous layer derive fro...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-013-0585-9
更新日期：2014-07-01 00:00:00
abstract：:Salinity is the major environmental constraint that affects legume productivity by inducing oxidative stress. Individually, both silicon (Si) nutrition and mycorrhization have been reported to alleviate salt stress. However, the mechanisms adopted by both in mediating stress responses are poorly understood. Thus, pot ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0892-4
更新日期：2016-09-01 00:00:00
abstract：:Wheat contains the largest number of miR396 family with 17 miR396 in Poaceae. MiR396 regulatory network underlying wheat grain development has not comprehensively been explored. Our results showed that precursor miR396 family in Poaceae exhibited not only conservativeness but also diversification especially in wheat. ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-020-01556-3
更新日期：2021-01-01 00:00:00
abstract：:1. Cells of Schizosaccharomyces pombe from the stationary growth phase show only a low capacity for the uptake of xanthine. In the presence of 2 muM xanthine, the initial uptake rate is found in the range of 6-10- minus 21 Moles times Cells- minus 1 times Min- minus 1 at 30 degrees C. 2. Preincubation in glucose solut...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF02075948
更新日期：1975-01-01 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
pub_type： 杂志文章
doi：10.1007/s00709-003-0020-8
更新日期：2003-01-01 00:00:00
abstract：:Telocytes (TCs), a novel type of interstitial cells, are involved in tissue homeostasis maintenance. This study aimed to investigate TC presence in the interstitium of mouse testis. Additionally, inactivation of the G-coupled membrane estrogen receptor (GPER) in the testis was performed to obtain insight into TC funct...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-018-1305-2
更新日期：2019-03-01 00:00:00
abstract：:Lichen secondary metabolites can function as allelochemicals and affect the development and growth of neighboring bryophytes, fungi, vascular plants, microorganisms, and even other lichens. Lichen overgrowth on bryophytes is frequently observed in nature even though mosses grow faster than lichens, but there is still ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1022-7
更新日期：2017-05-01 00:00:00
abstract：:The aim of this work was to study the activity of NAD(P)H:(quinone acceptor) oxidoreductase 1 (EC 1.6.99.2) in the regeneration of lipophilic antioxidants, alpha-tocopherol, and reduced-coenzyme Q analogs. First, we tested whether or not two isoforms of the NAD(P)H:(quinone acceptor) oxidoreductase 1 designated as "hy...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-002-0068-x
更新日期：2003-05-01 00:00:00
abstract：:We have shown previously that the durum wheat TdSOS1 excludes Na+ and Li+ ions outside cells. Moreover, this protein is activated by Arabidopsis kinase SOS2 through phosphorylation. The elimination of both SOS2 phosphorylation sites and the auto-inhibitory domain produces a hyperactive TdSOS1∆972 form, which have a ma...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1066-8
更新日期：2017-07-01 00:00:00
abstract：:Oogenesis in the neotenic, cave dwelling salamander Proteus anguinus anguinus has not been studied yet, and this study provides a detailed description of the early growth of the oocytes. Early previtellogene oocytes ranging from 100 to 600 µm in diameter were examined by light and transmission electron microscopy. The...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-010-0117-9
更新日期：2010-10-01 00:00:00
abstract：:Cytoplasmic streaming is essential for intracellular communications but its specific functions are not well known. In Chara corallina internodes, long-distance interactions mediated by cyclosis are clearly evident with microscopy-pulse amplitude modulation (PAM) fluorometer under application of localized light (LL) pu...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-0975-x
更新日期：2017-01-01 00:00:00
abstract：:ALTERED MERISTEM PROGRAM 1 (AMP1) encodes a putative glutamate-carboxypeptidase important for plant growth and development. In this study, by comparing the growth of Arabidopsis wild-type, amp1-10 and amp1-13 mutants, and AMP1-GFP/OX2- and AMP1-GFP/OX7-overexpressing seedlings in vitro and in soil, we uncover the role...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-019-01458-z
更新日期：2020-03-01 00:00:00
abstract：:Pollen ontogeny in Pancratium maritimum L. was studied from the sporogenous cell to mature pollen grain stages using transmission electron, scanning electron, and light microscopy to determine whether the pollen development in P. maritimum follows the basic scheme in angiosperms or not. In the course of microsporogene...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-0998-3
更新日期：2017-03-01 00:00:00
abstract：:Ripening which leads to fruit senescence is an inimitable process characterized by vivid changes in color, texture, flavor, and aroma of the fleshy fruits. Our understanding of the mechanisms underlying the regulation of fruit ripening and senescence is far from complete. Molecular and biochemical studies on tomato (S...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0836-z
更新日期：2016-03-01 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
pub_type： 杂志文章
doi：10.1007/s00709-008-0004-9
更新日期：2008-11-01 00:00:00
abstract：:Formation of intra-molecular disulfides and concomitant oxidative protein folding is essential for stability and catalytic function of many soluble and membrane-bound proteins in the endomembrane system, the mitochondrial inter-membrane space and the thylakoid lumen. Disulfide generation from free cysteines in nascent...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-012-0463-x
更新日期：2013-08-01 00:00:00
abstract：:Narcissus tazetta is one of the major geophyte crops worldwide, but little is known about its cell biology. The narcissus storage organ was studied by monitoring scale cell biology during the growth stage and dormancy, and it was found that amyloplasts gradually increased in size and reached a maximum at dormancy. In ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-006-0238-3
更新日期：2007-01-01 00:00:00
abstract：:Intracellular molecular transport and localization are crucial for cells (plant cells as much as mammalian cells) to proliferate and to adapt to diverse environmental conditions. Here, some aspects of the microscopy-based method of fluorescence recovery after photobleaching (FRAP) are introduced. In the course of the ...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-013-0604-x
更新日期：2014-03-01 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
pub_type： 杂志文章
doi：10.1007/s00709-017-1125-9
更新日期：2018-01-01 00:00:00
