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 evidences of the establishment of new cell cycles and fates and cytological gradients that corroborate their metabolic profile. Young and mature leaves of P. myrtoides and leaf galls induced by N. myrtoidis at different developmental stages were collected along 24 months and analyzed under light and transmission electron microscopy. The leaves of P. myrtoides are long-lasting and did not senesce within the analyzed period, while the galls have a shorter cycle, and senesce within 1 year. A homogenous parenchyma is established by a "standby-redifferentiation" of the chlorophyllous tissues, and sclerenchyma cells redifferentiate from parenchyma cells in the outer cortex of the mature galls. The lack of organelles, the underdeveloped lamellation of chloroplasts, and the occurrence of few plastoglobules are related to the photosynthetic deficiency of the galls. No cytological gradients were observed, but the organelle-rich cells of the vascular and perivascular parenchymas are similar to those of the nutritive tissues of galls induced by other insect taxa. These cells nearest to the feeding sites of N. myrtoidis present higher metabolism and well-developed apparatus for the prevention of oxidative stress. The features herein described corroborate the low metabolic profile of the galls as the cell cycles and fates of P. myrtoides are manipulated for completely new functionalities.
journal_name
Protoplasmajournal_title
Protoplasmaauthors
Carneiro RG,Isaias RMdoi
10.1007/s00709-014-0709-xsubject
Has Abstractpub_date
2015-03-01 00:00:00pages
637-46issue
2eissn
0033-183Xissn
1615-6102journal_volume
252pub_type
杂志文章相关文献
PROTOPLASMA文献大全abstract：:Heat shock protein 90 (Hsp90) is an abundant cytosolic protein. In higher eukaryotes two isoforms of Hsp90 exist, Hsp90 alpha and Hsp90 beta. Hsp90 was purified from rat liver and after sodium dodecyl sulfate-polyacrylamide gel electrophoresis revealed a double band at about 90 kDa. The two bands were separated and id...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF01288360
更新日期：2001-01-01 00:00:00
abstract：:Intestinal ischemia and reperfusion (I/R) causes cellular and tissue damage to the intestine and remote organs such as the liver. Increased production of ROS and nitric oxide and dysregulation of cytoprotective enzymes may be involved in intestinal I/R. The aim was to evaluate the protective effects of glutamine on th...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1102-3
更新日期：2017-11-01 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
pub_type： 杂志文章
doi：10.1007/s00709-016-1057-9
更新日期：2017-09-01 00:00:00
abstract：:By a detailed ontogenetic study of Polemonium caeruleum pollen, tracing each stage of development at high TEM resolution, we aim to understand the establishment of the pollen wall and to unravel the mechanisms underlying sporoderm development. The main steps of exine ontogeny in Polemonium caeruleum, observed in the m...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1121-0
更新日期：2018-01-01 00:00:00
abstract：:The small GTPase CDC42 is ubiquitously expressed in eukaryotes, where it participates in the regulation of the cytoskeleton and a wide range of cellular processes, including cytokinesis, gene expression, cell cycle progression, apoptosis, and tumorigenesis. As very little is known on the molecular level about mycorrhi...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-007-0254-y
更新日期：2007-01-01 00:00:00
abstract：:The detergent Brij 58 has been introduced to reverse plasma membrane (PM) vesicles from the right-side-out to the inside-out form. The aim of the present work was to investigate the effect of Brij 58 on the formation of an ATP-dependent proton gradient and on the fluidity of the lipid phase of PM vesicles. PMs of corn...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF01289415
更新日期：2001-01-01 00:00:00
abstract：:Hepatocellular carcinoma (HCC) is the most common primary malignancy of the liver and is characterized by multistage formation. The presence of ductular reaction, cytokeratin 7 positivity (PCK7), and increased levels of gamma glutamyltransferase (γGT) has been observed during liver carcinogenesis and contribute to tum...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1000-0
更新日期：2017-03-01 00:00:00
abstract：:Some species of Spirogyra form rosette-shaped or rod-shaped rhizoids in the terminal cell of the filaments. In the present study, we analyzed an involvement of microtubules (MTs) in rhizoid differentiation. Before rhizoid differentiation, cortical MTs were arranged transversely to the long axis of cylindrical cells, r...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-002-0078-8
更新日期：2003-06-01 00:00:00
abstract：:The effects of β-amino butyric acid (BABA) on abiotic stress tolerance potential of three Vigna radiata varieties were studied. The reduction in the growth of seedlings subjected to NaCl/polyethylene glycol (PEG) stress is alleviated by BABA seed priming, which also enhanced photosynthetic pigment content and photosyn...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0804-7
更新日期：2016-03-01 00:00:00
abstract：:In this study, we surveyed the bacteriome-associated microbiota of the corn leafhopper Dalbulus maidis by means of histological, ultrastructural, and molecular analyses. Amplification and sequencing of 16S rDNA genes revealed that the endosymbiont "Candidatus Sulcia muelleri" (Phylum Bacteroidetes) resides in bacterio...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1033-4
更新日期：2017-05-01 00:00:00
abstract：:Earwigs (Dermaptera) use different strategies to increase their reproductive success. Most species lay eggs; however, viviparity of the matrotrophic type has been reported in two groups: Hemimeridae and Arixeniidae. In Arixeniidae, offspring develop in two separate places: inside an ovary (the intraovarian phase) and ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-019-01402-1
更新日期：2019-11-01 00:00:00
abstract：:Reactive carbonyl species methylglyoxal (MG) has always been regarded as a cytotoxic metabolite, but now is emerging to function as signal molecule in plants. However, whether MG can induce salt tolerance is elusive. In this study, treatment of wheat seeds with NaCl reduced seed germination, plant height, root length,...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1094-z
更新日期：2017-09-01 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：:Endoplasmic reticulum (ER) is a major site for secretory protein folding and lipid synthesis. Since ER cannot be synthesized de novo, it must be inherited during the cell cycle. Studying ER inheritance can however be difficult because the ER of typical plant and animal cells is morphologically complex. Therefore, our ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-011-0359-1
更新日期：2012-10-01 00:00:00
abstract：:Single-molecule Förster resonance energy transfer (smFRET) has emerged as a powerful tool for elucidating biological structure and mechanisms on the molecular level. Here, we focus on applications of smFRET to study interactions between DNA and enzymes such as DNA and RNA polymerases. SmFRET, used as a nanoscopic rule...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-013-0596-6
更新日期：2014-03-01 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：:Microtubule dynamics were examined in live cells of the fungal plant pathogen Magnaporthe grisea transformed for constitutive expression of a fusion protein containing enhanced yellow-fluorescent protein and a Neurospora crassa benomyl-resistant allele of beta-tubulin. Transformants retained their ability to different...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-004-0081-3
更新日期：2005-04-01 00:00:00
abstract：:In this study, tansy (Tanacetum vulgare L.) in vitro culture was established from seeds collected from natural populations. The multiplication of plantlets was conducted through shoot tips that exhibited potent apical growth and regeneration capacities on basal medium (BM), without the addition of any plant growth reg...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-020-01588-9
更新日期：2020-11-27 00:00:00
abstract：:Hemp (Cannabis sativa L., 2n = 20) is a dioecious plant. Sex expression is controlled by an X-to-autosome balance system consisting of the heteromorphic sex chromosomes XY for males and XX for females. Genetically monoecious hemp offers several agronomic advantages compared to the dioecious cultivars that are widely u...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0851-0
更新日期：2016-05-01 00:00:00
abstract：:Ascochyta pisi is a necrotrophic pathogenic fungus, which mainly survives between seasons through infected seeds. Defence responses of pea embryo axes to A. pisi were investigated in the heterotrophic phase of seed germination and during the transition from the heterotrophic to the autotrophic phase. Germinated pea se...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-012-0374-x
更新日期：2013-02-01 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：: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
pub_type： 杂志文章
doi：10.1007/s00709-006-0209-8
更新日期：2006-12-01 00:00:00
abstract：:In the Cape Fynbos of South Africa, Psoralea pinnata (L.) plants occur naturally in both wetland and well-drained soils and yet effectively fix N2 under the two contrasting conditions. In this study, nodule structure and functioning in P. pinnata plants from the two habitats were evaluated using light and transmission...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0922-2
更新日期：2017-01-01 00:00:00
abstract：:HLA-B associated transcript 1 (BAT1) protein, also named as spliceosome RNA helicase UAP56, is a member of the DExD/H-box family of helicases. However, regulation under stress, biochemical properties, and functions of plant homologue of BAT1 are poorly understood. Here, we report the purification and detailed biochemi...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0791-8
更新日期：2015-11-01 00:00:00
abstract：:The distribution and development of secretory cells and crystal cells in young shoot apexes of water hyacinth were investigated through morphological and cytological analysis. The density of secretory cells and crystal cells were high in parenchyma tissues around the vascular bundles of shoot apexes. Three development...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-010-0157-1
更新日期：2011-04-01 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
pub_type： 杂志文章
doi：10.1007/s00709-005-0103-9
更新日期：2005-10-01 00:00:00
abstract：:In addition to small molecules such as sugars and amino acids, phloem sap contains macromolecules, including mRNA and proteins. It is generally assumed that all molecules in the phloem sap are on the move from source to sink, but recent evidence suggests that the macromolecules' direction of movement can be controlled...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-010-0215-8
更新日期：2011-01-01 00:00:00
abstract：:The cryptomonad nucleomorph is a vestigial nucleus of a eukaryotic red alga engulfed by a phagotrophic protist and retained as a photosynthetic endosymbiont. This review recounts the initial discovery and subsequent characterisation of the cryptomonad nucleomorph focusing on the key role of Peter Sitte and his protégé...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1153-5
更新日期：2017-09-01 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：:The classification of order Nostocales (Cyanobacteria) and inter relationships of morphologically similar taxa is still debatable due to ever changing morphological features. No attempt has been made to improve the morphological taxonomy despite the fact that it is the morphology that represents the totality of genes....
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0629-9
更新日期：2015-01-01 00:00:00
