Male sterility in Bambusa tuldoides Munro.

abstract：:We used an ultraviolet microbeam to cut individual kinetochore spindle fibres in metaphase crane-fly spermatocytes. We then followed the growth of the "kinetochore stubs", the remnants of kinetochore fibres that remain attached to kinetochores. Kinetochore stubs elongate with constant velocity by adding tubulin subuni...

journal_title：Protoplasma

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

更新日期：2007-01-01 00:00:00

abstract：:Tradescantia virginiana leaf epidermal cells were plasmolysed by sequential treatment with 0.8 M and 0.3 M sucrose. Plasmolysis revealed adhesion of the plasma membrane to the cell wall at sites coinciding with cytoskeletal arrays involved in the polarisation of cells undergoing asymmetric divisions--cortical actin pa...

journal_title：Protoplasma

authors： Cleary AL

更新日期：2001-01-01 00:00:00

abstract：:We have analyzed the expression of key genes orchestrating tail regeneration in lizard under normal and scarring conditions after cauterization. At 1-day post-cauterization (1 dpc), the injured blastema contains degenerating epithelial and mesenchymal cells, numerous mast cells, and immune cells. At 3 and 7 dpc, a str...

journal_title：Protoplasma

authors： Degan M,Dalla Valle L,Alibardi L

更新日期：2021-01-01 00:00:00

abstract：:We used qualitative and quantitative fluorescence microscopy of the fluorescein isothiocyanate-conjugated lectins Concanavalin A, phytohaemagglutinin-erythroagglutinin, pokeweed mitogen, and peanut agglutinin to examine sugar composition on the cell surface and cell-associated mucilage (where present) in a number of c...

journal_title：Protoplasma

authors： Tien CJ,Sigee DC,White KN

更新日期：2005-10-01 00:00:00

abstract：:Turions, which are modified shoot apices, are vegetative, dormant overwintering organs produced by perennial aquatic plants. In this study, the turion cytochemistry and ultrastructure of Aldrovanda vesiculosa, Utricularia vulgaris and U. stygia were compared with particular emphasis placed on storage substances. These...

journal_title：Protoplasma

authors： Płachno BJ,Adamec L,Kozieradzka-Kiszkurno M,Swiątek P,Kamińska I

更新日期：2014-11-01 00:00:00

abstract：:Fragile sites (FSs) in plants have been described for species like Lolium and other grasses. Whereas in humans FSs were shown to be involved in genome instabilities; the consequences of FSs expression in plants are not known yet. To evaluate whether FSs cause karyotype instabilities, we assessed the frequency of micro...

journal_title：Protoplasma

authors： Rocha LC,Jankowska M,Fuchs J,Mittelmann A,Techio VH,Houben A

更新日期：2017-01-01 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：:Plant development is regulated by numerous chemicals derived from a multitude of metabolic pathways. However, we know very little about the biological effects and functions of many of these metabolites in the cell. N-Acylethanolamines (NAEs) are a group of lipid mediators that play important roles in mammalian physiol...

journal_title：Protoplasma

authors： Motes CM,Pechter P,Yoo CM,Wang YS,Chapman KD,Blancaflor EB

更新日期：2005-12-01 00:00:00

abstract：:Salinity is a major stress that adversely affects plant growth and crop production. Understanding the cellular responses and molecular mechanisms by which plants perceive and adopt salinity stress is of fundamental importance. In this work, some of the cellular signaling events including cell death, reactive oxygen sp...

journal_title：Protoplasma

authors： Li Z,Yang H,Wu X,Guo K,Li J

更新日期：2015-05-01 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

authors： Kumar V,Irfan M,Ghosh S,Chakraborty N,Chakraborty S,Datta A

更新日期：2016-03-01 00:00:00

abstract：:Mastigonemes, tripartite tubular hairs on the anterior flagellum of Phytophthora zoospores, are instrumental for disease dissemination to new host plants. A previous study showed that PnMas2 was part of the tubular shaft of Phytophthora parasitica mastigonemes. In the current study, genes encoding two related proteins...

journal_title：Protoplasma

authors： Hee WY,Blackman LM,Hardham AR

更新日期：2019-03-01 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

authors： Oleszczuk S,Sowa S,Zimny J

更新日期：2006-08-01 00:00:00

abstract：:Fibrillarin and the plant nucleolin homolog NopA64 are two important nucleolar proteins involved in pre-rRNA processing. In order to determine the effects of the altered gravity environment on the nucleolus, we have investigated the location of fibrillarin and NopA64 in nucleolar subcomponents of cress (Lepidium sativ...

journal_title：Protoplasma

authors： Sobol M,Gonzalez-Camacho F,Rodríguez-Vilariño V,Kordyum E,Medina FJ

更新日期：2006-09-01 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：:Indirect immunofluorescence and confocal microscopy were used to study the nucleation and organization of microtubules during meiosis in two species of leafy liverworts, Cephalozia macrostachya and Telaranea longifolia. This is the first such study of sporogenesis in the largest group of liverworts important as living...

journal_title：Protoplasma

authors： Brown RC,Lemmon BE

更新日期：2009-10-01 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

authors： Goga M,Antreich SJ,Bačkor M,Weckwerth W,Lang I

更新日期：2017-05-01 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

authors： Rasheed R,Wahid A,Hussain I,Mahmood S,Parveen A

更新日期：2016-05-01 00:00:00

abstract：:Mechanisms of transport of secretory products across the Golgi apparatus (GA) as well as of scale formation in prymnesiophytes have remained controversial. We have used a quantitative morphological approach to study formation and transport of scales across the GA in haploid cells of Pleurochrysis sp. The GA of these c...

journal_title：Protoplasma

authors： Hawkins EK,Lee JJ

更新日期：2001-01-01 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

authors： Bello RI,Kagan VE,Tyurin V,Navarro F,Alcaín FJ,Villalba JM

更新日期：2003-05-01 00:00:00

abstract：:The directional elongation of root hairs, "tip growth", depends on the coordinated and highly regulated trafficking of vesicles which fill the tip cytoplasm and are active in secretion of cell wall material. So far, little is known about the dynamics of endocytosis in living root hairs. We analyzed the motile behaviou...

journal_title：Protoplasma

authors： Ovecka M,Lang I,Baluska F,Ismail A,Illes P,Lichtscheidl IK

更新日期：2005-10-01 00:00:00

abstract：:Along the past recent years, two-photon excitation (TPE) microscopy has moved from the realms of technical curiosity to be a standard application in many advanced cell biology laboratories. The growing body of literature covered in this review points out the obvious advantages of TPE over any other imaging method base...

journal_title：Protoplasma

authors： Feijó JA,Moreno N

更新日期：2004-03-01 00:00:00

abstract：:Pongamia pinnata L. is a multipurpose versatile legume that is well known as a prospective feedstock biodiesel species. However, to date, there has been little genomic research aimed at the exploitation of the biotechnological potential of this species. Genetic characterization of any plant is a challenging task when ...

journal_title：Protoplasma

authors： Choudhury RR,Basak S,Ramesh AM,Rangan L

更新日期：2014-05-01 00:00:00

abstract：:The life of plants growing in cold extreme environments has been well investigated in terms of morphological, anatomical, and ecophysiological adaptations. In contrast, long-term cellular or metabolic studies have been performed by only a few groups. Moreover, a number of single reports exist, which often represent ju...

journal_title：Protoplasma

authors： Lütz C

更新日期：2010-08-01 00:00:00

abstract：:Features of programmed cell death (PCD) and dynamic changes of starch accumulation in developing pericarp cells of wheat (Triticum aestivum L.) were observed and analyzed by periodic acid-Schiff/toluidine blue O double staining, fluorescence staining, terminal deoxynucleotidyl transferase-mediated fluorescein deoxyuri...

journal_title：Protoplasma

authors： Zhou Z,Wang L,Li J,Song X,Yang C

更新日期：2009-07-01 00:00:00

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：:Marcetia taxifolia (A. St.-Hil.) DC. hosts two gall morphotypes, a pistil-shaped gall induced by a Cecidomyiidae (Diptera) and a fusiform stem gall induced by a Lepidoptera. The cytological study of these galls aimed to answer how the difference in nutritive tissues of Diptera and Lepidoptera galls could be explained ...

journal_title：Protoplasma

authors： Ferreira BG,Carneiro RG,Isaias RM

更新日期：2015-09-01 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：:According to the Cholodny-Went hypothesis, gravitropic differential growth is brought about by the redistribution of auxin (indolyl-3-acetic acid, IAA). We reinvestigated the relevance of different auxins and studied the role of ethylene in hypocotyls of sunflower and shoots and roots of rye and maize seedlings. Incub...

journal_title：Protoplasma

authors： Edelmann HG,Roth U

更新日期：2006-12-01 00:00:00

abstract：:Hyperhydricity is a physiological disorder associated with oxidative stress. Reactive oxygen species (ROS) generation in plants is initiated by various enzymatic sources, including plasma membrane-localized nicotinamide adenine dinucleotide phosphate (NADPH) oxidases, cell wall-bound peroxidase (POD), and apoplastic p...

journal_title：Protoplasma

authors： Tian J,Cheng Y,Kong X,Liu M,Jiang F,Wu Z

更新日期：2017-01-01 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

authors： Mali LB,Bulog B

更新日期：2010-10-01 00:00:00