Abstract:
:Radial oxygen loss is a physical phenomenon that occurs naturally in aquatic plants. Typha domingensis was chosen as a model plant because it possesses basic morphological characteristics, such as a stem (rhizome) that produces leaves and adventitious roots, which are present in many aquatic plants. This study aimed to evaluate the following: the relevance of the anatomy of T. domingensis on gas diffusion among organs; the influence of plant parts on radial oxygen loss; the role of catalase in radial oxygen loss; and the proposition of a novel explanation for the downward diffusion of oxygen through the organs of this aquatic macrophyte and into the environment. Typha domingensis plants were cultivated in a greenhouse under different conditions: plants with intact leaves, plants with leaves cut in half, and plants without leaves. Furthermore, we evaluated the percentage of aerenchyma in different vegetative organs, the minimum pressure required for radial oxygen loss, the daily variations of dissolved oxygen, and the roots' catalase activity. The results demonstrated that certain cellular features contributed to decreased oxygen diffusion among the organs, specifically, those found in the leaf-rhizome and root-rhizome interfaces as well as the suberin and lignin layers in these regions. Additionally, our experiments with a catalase activator and inhibitor validated that a significant amount of the oxygen released in radial oxygen loss could not, in fact, be exclusively supplied by the atmosphere. Thus, a complementary model is proposed in which catalase activity is an important component of radial oxygen loss.
journal_name
Protoplasmajournal_title
Protoplasmaauthors
Duarte VP,Pereira MP,Corrêa FF,de Castro EM,Pereira FJdoi
10.1007/s00709-020-01597-8subject
Has Abstractpub_date
2021-01-06 00:00:00eissn
0033-183Xissn
1615-6102pii
10.1007/s00709-020-01597-8pub_type
杂志文章相关文献
PROTOPLASMA文献大全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::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::Programmed cell death occurs in plants during several developmental processes and during the expression of resistance to pathogen attack (i.e., the hypersensitive response). An unsolved question of plant programmed cell death is whether a unique signaling pathway or different, possibly convergent pathways exist. This ...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-004-0053-7
更新日期:2004-10-01 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::During the past decade, there has been a paradigm shift in our understanding of the roles of intracellular lipid droplets (LDs). New genetic, biochemical and imaging technologies have underpinned these advances, which are revealing much new information about these dynamic organelles. This review takes a comparative ap...
journal_title:Protoplasma
pub_type: 杂志文章,评审
doi:10.1007/s00709-011-0329-7
更新日期:2012-07-01 00:00:00
abstract::Frost resistance of sprouting Picea abies shoots is insufficient for survival of naturally occurring late frosts. The cellular changes during sprouting appeared to be responsible for frost damage as frost events that damaged sprouting shoots did not damage older needles and stems. Whilst resting buds showed initial fr...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-009-0052-9
更新日期:2010-07-01 00:00:00
abstract::Podophyllum hexandrum Royle is known for its vast medicinal properties, particularly anticancer. It contains higher amount of podophyllotoxin (4.3 %), compared to Podophyllum peltatum (0.025 %) and other plant species; as a result, it has been used worldwide in the preparation of various drugs including anticancer, an...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-015-0757-x
更新日期:2015-09-01 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
pub_type: 杂志文章
doi:10.1007/s00709-003-0004-8
更新日期:2003-09-01 00:00:00
abstract::The original version of this article unfortunately contains a mistake. ...
journal_title:Protoplasma
pub_type: 杂志文章,已发布勘误
doi:10.1007/s00709-019-01348-4
更新日期:2019-05-01 00:00:00
abstract::Podophyllum species (Podophyllum hexandrum Royle and Podophyllum peltatum) are a major source of deriving anticancer drugs from their major chemical constituent, podophyllotoxin. However, information lacks on regulatory components of podophyllotoxin biosynthesis; therefore, different classes of transcription factors w...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-015-0938-7
更新日期:2017-01-01 00:00:00
abstract::The inflorescence of Hedychium coccineum Smith is thyrse, and the primary bracts are initiated in a spiral phyllotactic pattern on the sides of the inflorescence dome. Cincinnus primordia are initiated on the flank of the inflorescence apex, in the axils of primary bracts. This primordium subsequently develops a bract...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-010-0145-5
更新日期:2010-11-01 00:00:00
abstract::Approximately 20,000 mammalian genes are estimated to encode between 250 thousand and 1 million different proteins. This enormous diversity of the mammalian proteome is caused by the ability of a single-gene locus to encode multiple protein isoforms. Protein isoforms encoded by one gene locus can be functionally disti...
journal_title:Protoplasma
pub_type: 杂志文章,评审
doi:10.1007/s00709-016-1071-y
更新日期:2017-05-01 00:00:00
abstract::19F nuclear magnetic resonance (NMR) imaging and 19F NMR chemical-shift imaging (19F CSI) have been used to localize fluorinated compounds administered to stems of Ancistrocladus heyneanus and A. abbreviatus for the elucidation of biosynthetic pathways in living plants. This first application of 19F CSI on plants prov...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/BF01306603
更新日期:2001-01-01 00:00:00
abstract::We used a noninvasive microprobe technique to record in substomatal cavities of barley leaves the apoplastic pH response to different stress situations. When K+ (or Na+) activity at the roots of intact plants was increased from 1 to 50 mM, the leaf apoplastic pH increased by 0.4 to 0.6 units within 8 to 12 min when st...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-005-0131-5
更新日期:2005-12-01 00:00:00
abstract::Seed storage proteins (SSPs) have been studied for more than 250 years because of their nutritional value and their impact on the use of grain in food processing. More recently, the use of seeds for the production of recombinant proteins has rekindled interest in the behavior of SSPs and the question how they are able...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-011-0288-z
更新日期:2012-04-01 00:00:00
abstract::The effectiveness of 2,3-butanedione monoxime (BDM) as an inhibitor of plant myosins has been investigated. Three myosin-dependent motility phenomena in plants, namely cytoplasmic streaming in Chara corallina, light-dependent chloroplast repositioning in Elodea sp., and brefeldin A(BFA)-induced Golgi membrane dynamics...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/BF01415707
更新日期:1999-01-01 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::While there is a number of studies on the effects of Rho GTPases on the actin-based cytoskeleton in higher eukaryotes, studies in protozoans are rather limited. The problem seems to be intriguing since the structure of protozoan cytoskeletons is distinct from most vertebrate cells. By blocking endogenous Rho family pr...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-002-0040-9
更新日期:2003-03-01 00:00:00
abstract::Indeterminate growth and the production of new organs in plants require a constant supply of new cells. The majority of these cells are produced in mitotic regions called meristems. For primary or tip growth of the roots and shoots, the meristems are located in the apices. These apical meristems have been shown to fun...
journal_title:Protoplasma
pub_type: 杂志文章,评审
doi:10.1007/s00709-010-0211-z
更新日期:2010-12-01 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::We investigated the diurnal differences in the innermost surface of tracheid cell walls at various developmental stages from cambium to mature xylem. Cryptomeria japonica saplings were cultivated in a growth chamber with a light cycle set at 14 h of light and 10 h of darkness. Samples were collected from the saplings ...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-006-0190-2
更新日期:2006-11-01 00:00:00
abstract::The couplons of the cardiomyocyte form nanospaces within the cell that place the L-type calcium channel (Ca(v)1.2), situated on the plasmalemma, in opposition to the type 2 ryanodine receptor (RyR2), situated on the sarcoplasmic reticulum. These two molecules, which form the basis of excitation-contraction coupling, a...
journal_title:Protoplasma
pub_type: 杂志文章,评审
doi:10.1007/s00709-011-0347-5
更新日期:2012-02-01 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
pub_type: 杂志文章
doi:10.1007/s00709-017-1200-2
更新日期:2018-07-01 00:00:00
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::A convenient experimental system was established to test how cells derived from higher-plant internal tissues respond to mechanical stimulation. Short-term culture of tobacco ovules in vitro led to the generation of bar-shaped cells from the parenchyma tissue of the ovule funicle. These cells are still connected to th...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-008-0304-0
更新日期:2008-01-01 00:00:00
abstract::The structure of the digestive gland epithelium of a terrestrial isopod Porcellio scaber has been investigated by conventional scanning electron microscopy (SEM), focused ion beam-scanning electron microscopy (FIB/SEM), and light microscopy in order to provide evidence on morphology of the gland epithelial surface in ...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-010-0110-3
更新日期:2010-05-01 00:00:00
abstract::The subtribe Cajaninae of papilionoid legumes has a pantropical distribution and comprises approximately 490 species. These species have diversified throughout dry environments where there are high temperatures and strong light. The subtribe stands out because all its representatives have vesicular glands. In addition...
journal_title:Protoplasma
pub_type: 杂志文章
doi:10.1007/s00709-018-1307-0
更新日期:2019-03-01 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
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::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