@article{MTMT:33846356, title = {Reconsidering Dogmas about the Growth of Bacterial Populations}, url = {https://m2.mtmt.hu/api/publication/33846356}, author = {Ughy, Bettina and Nagyapáti, Sarolta and Lajkó, Dézi Bianka and Letoha, Tamas and Prohaszka, Adam and Deeb, Dima and Dér, András and Pettkó-Szandtner, Aladár and Szilák, László}, doi = {10.3390/cells12101430}, journal-iso = {CELLS-BASEL}, journal = {CELLS}, volume = {12}, unique-id = {33846356}, abstract = {The growth of bacterial populations has been described as a dynamic process of continuous reproduction and cell death. However, this is far from the reality. In a well fed, growing bacterial population, the stationary phase inevitably occurs, and it is not due to accumulated toxins or cell death. A population spends the most time in the stationary phase, where the phenotype of the cells alters from the proliferating ones, and only the colony forming unit (CFU) decreases after a while, not the total cell concentration. A bacterial population can be considered as a virtual tissue as a result of a specific differentiation process, in which the exponential-phase cells develop to stationary-phase cells and eventually reach the unculturable form. The richness of the nutrient had no effect on growth rate or on stationary cell density. The generation time seems not to be a constant value, but it depended on the concentration of the starter cultures. Inoculations with serial dilutions of stationary populations reveal a so-called minimal stationary cell concentration (MSCC) point, up to which the cell concentrations remain constant upon dilutions; that seems to be universal among unicellular organisms.}, year = {2023}, eissn = {2073-4409}, orcid-numbers = {Letoha, Tamas/0000-0002-6035-4009; Prohaszka, Adam/0000-0002-2390-2387} } @article{MTMT:33775142, title = {Long- and short-term acclimation of the photosynthetic apparatus to salinity in Chlamydomonas reinhardtii. The role of Stt7 protein kinase}, url = {https://m2.mtmt.hu/api/publication/33775142}, author = {Devadasu, Elsinraju Devadasu and Kanna, Sai Divya and Neelam, Satyabala and Yadav, Ranay Mohan and Nama, Srilatha and Akhtar, Parveen and Polgár, Tamás Ferenc and Ughy, Bettina and Garab, Győző and Lambrev, Petar and Subramanyam, Rajagopal}, doi = {10.3389/fpls.2023.1051711}, journal-iso = {FRONT PLANT SCI}, journal = {FRONTIERS IN PLANT SCIENCE}, volume = {14}, unique-id = {33775142}, issn = {1664-462X}, year = {2023}, eissn = {1664-462X}, orcid-numbers = {Akhtar, Parveen/0000-0002-3264-7154} } @article{MTMT:33117892, title = {Structural Entities Associated with Different Lipid Phases of Plant Thylakoid Membranes-Selective Susceptibilities to Different Lipases and Proteases}, url = {https://m2.mtmt.hu/api/publication/33117892}, author = {Dlouhy, Ondrej and Karlicky, Vaclav and Javornik, Uros and Kurasova, Irena and Zsíros, Ottó and Sket, Primoz and Kanna, Sai Divya and Böde, Kinga and Vecerova, Kristyna and Urban, Otmar and Gasanoff, Edward S. and Plavec, Janez and Spunda, Vladimir and Ughy, Bettina and Garab, Győző}, doi = {10.3390/cells11172681}, journal-iso = {CELLS-BASEL}, journal = {CELLS}, volume = {11}, unique-id = {33117892}, abstract = {It is well established that plant thylakoid membranes (TMs), in addition to a bilayer, contain two isotropic lipid phases and an inverted hexagonal (H-II) phase. To elucidate the origin of non-bilayer lipid phases, we recorded the P-31-NMR spectra of isolated spinach plastoglobuli and TMs and tested their susceptibilities to lipases and proteases; the structural and functional characteristics of TMs were monitored using biophysical techniques and CN-PAGE. Phospholipase-A1 gradually destroyed all P-31-NMR-detectable lipid phases of isolated TMs, but the weak signal of isolated plastoglobuli was not affected. Parallel with the destabilization of their lamellar phase, TMs lost their impermeability; other effects, mainly on Photosystem-II, lagged behind the destruction of the original phases. Wheat-germ lipase selectively eliminated the isotropic phases but exerted little or no effect on the structural and functional parameters of TMs-indicating that the isotropic phases are located outside the protein-rich regions and might be involved in membrane fusion. Trypsin and Proteinase K selectively suppressed the H-II phase-suggesting that a large fraction of TM lipids encapsulate stroma-side proteins or polypeptides. We conclude that-in line with the Dynamic Exchange Model-the non-bilayer lipid phases of TMs are found in subdomains separated from but interconnected with the bilayer accommodating the main components of the photosynthetic machinery.}, keywords = {BEHAVIOR; PROTEIN; CYTOCHROME-C; DYNAMICS; PHOTOSYSTEM-II; TEMPERATURE-DEPENDENCE; THERMAL-STABILITY; Membrane Fusion; Plastoglobuli; NONBILAYER LIPIDS; Membrane models; FLUID-MOSAIC MODEL; Lipocalins; lipid polymorphism; non-bilayer lipids; P-31-NMR spectroscopy; structural and functional plasticity}, year = {2022}, eissn = {2073-4409}, orcid-numbers = {Plavec, Janez/0000-0003-1570-8602} } @article{MTMT:33063333, title = {Chloroplast Acetyltransferase GNAT2 is Involved in the Organization and Dynamics of Thylakoid Structure}, url = {https://m2.mtmt.hu/api/publication/33063333}, author = {Rantala, Marjaana and Ivanauskaite, Aiste and Laihonen, Laura and Kanna, Sai Divya and Ughy, Bettina and Mulo, Paula}, doi = {10.1093/pcp/pcac096}, journal-iso = {PLANT CELL PHYSIOL}, journal = {PLANT AND CELL PHYSIOLOGY}, volume = {63}, unique-id = {33063333}, issn = {0032-0781}, abstract = {Higher plants acclimate to changes in light conditions by adjusting the thylakoid membrane ultrastructure. Additionally, excitation energy transfer between photosystem II (PSII) and photosystem I (PSI) is balanced in a process known as state transition. These modifications are mediated by reversible phosphorylation of Lhcb1 and Lhcb2 proteins in different pools of light-harvesting complex (LHCII) trimers. Our recent study demonstrated that chloroplast acetyltransferase NUCLEAR SHUTTLE INTERACTING (NSI)/GNAT2 (general control non-repressible 5 (GCN5)-related N-acetyltransferase 2) is also needed for the regulation of light harvesting, evidenced by the inability of the gnat2 mutant to perform state transitions although there are no defects in LHCII phosphorylation. Here, we show that despite contrasting phosphorylation states of LHCII, grana packing in the gnat2 and state transition 7 (stn7) mutants possesses similar features, as the thylakoid structure of the mutants does not respond to the shift from darkness to light, which is in striking contrast to wild type (Wt). Circular dichroism and native polyacrylamide gel electrophoresis analyses further revealed that the thylakoid protein complex organization of gnat2 and stn7 resembles each other, but differ from that of Wt. Also, the location of the phosphorylated Lhcb2 as well as the LHCII antenna within the thylakoid network in gnat2 mutant is different from that of Wt. In gnat2, the LHCII antenna remains largely in grana stacks, where the phosphorylated Lhcb2 is found in all LHCII trimer pools, including those associated with PSII. These results indicate that in addition to phosphorylation-mediated regulation through STN7, the GNAT2 enzyme is involved in the organization and dynamics of thylakoid structure, probably through the regulation of chloroplast protein acetylation.}, keywords = {PHOSPHORYLATION; PHOSPHORYLATION; MEMBRANES; PHOTOSYSTEM-II; ARABIDOPSIS; ARABIDOPSIS; STATE TRANSITIONS; PROTEIN COMPLEXES; LIGHT-HARVESTING COMPLEX; LIGHT-HARVESTING COMPLEX; ACETYLTRANSFERASE; Plant Sciences; Supercomplex; EXCITATION-ENERGY DISTRIBUTION}, year = {2022}, eissn = {1471-9053}, pages = {1205-1214}, orcid-numbers = {Laihonen, Laura/0000-0002-9243-7028; Mulo, Paula/0000-0002-8728-3204} } @CONFERENCE{MTMT:32871973, title = {BIOACTIVE COMPOUNDS IN NEWLY ISOLATED FRESHWATER MICROALGAE STRAINS: IMPACT TO THE FLESH QUALITY OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)}, url = {https://m2.mtmt.hu/api/publication/32871973}, author = {Jakabné Sándor, Zsuzsanna and Ardó, László and Kanna, Sai Divya and Racskóné Domonkos, Ildikó and Ughy, Bettina and Perjéssy, Judit and Kóbori, Tímea Ottilia and Dergez, Ágnes Karolina}, booktitle = {XX. TOWARDS PRECISION FISH NUTRITION AND FEEDING ( International Symposium on Fish Nutrition and Feeding}, unique-id = {32871973}, year = {2022}, pages = {56}, orcid-numbers = {Jakabné Sándor, Zsuzsanna/0000-0002-5216-6964} } @article{MTMT:32823174, title = {Salt Stress Induces Paramylon Accumulation and Fine-Tuning of the Macro-Organization of Thylakoid Membranes in Euglena gracilis Cells}, url = {https://m2.mtmt.hu/api/publication/32823174}, author = {Kanna, Sai Divya and Racskóné Domonkos, Ildikó and Kóbori, T.O. and Dergez, Ágnes Karolina and Böde, Kinga and Nagyapáti, Sarolta and Zsíros, Ottó and Ünnep, Renáta and Nagy, Gergely and Garab, Győző and Szilák, László and Solymosi, Katalin and Kovács, László and Ughy, Bettina}, doi = {10.3389/fpls.2021.725699}, journal-iso = {FRONT PLANT SCI}, journal = {FRONTIERS IN PLANT SCIENCE}, volume = {12}, unique-id = {32823174}, issn = {1664-462X}, year = {2021}, eissn = {1664-462X}, orcid-numbers = {Solymosi, Katalin/0000-0001-5246-2547} } @CONFERENCE{MTMT:32349113, title = {FIRST EXPERIENCE OF NEWLY ISOLATED FRESHWATER ALGAE STRAINS AS IMMUNSTIMULANTS FOR STERLET (ACIPENSER RUTHENUS) JUVENILES}, url = {https://m2.mtmt.hu/api/publication/32349113}, author = {Jakabné Sándor, Zsuzsanna and Bíró, Janka and Kóbori, Tímea Ottilia and Dergez, Ágnes Karolina and Sai, Divya Kanna and Racskóné Domonkos, Ildikó and Ughy, Bettina and Ardó, László}, booktitle = {Aquaculture Europe 21 : Abstracts}, unique-id = {32349113}, year = {2021}, pages = {596-597}, orcid-numbers = {Jakabné Sándor, Zsuzsanna/0000-0002-5216-6964} } @CONFERENCE{MTMT:32348396, title = {EFFECT OF NEWLY ISOLATED FRESHWATER MICROALGAE ON THE ACTIVITY OF HEAD KIDNEY LEUKOCYTES ISOLATED FROM PIKEPERCH (SANDER LUCIOPERCA ) AND COMMON CARP (CYPRINUS CARPIO)}, url = {https://m2.mtmt.hu/api/publication/32348396}, author = {Ardó, László and Ughy, Bettina and Dergez, Ágnes Karolina and Kóbori, Tímea Ottilia and Jakabné Sándor, Zsuzsanna}, booktitle = {Aquaculture Europe 21 : Abstracts}, unique-id = {32348396}, year = {2021}, pages = {64-65}, orcid-numbers = {Jakabné Sándor, Zsuzsanna/0000-0002-5216-6964} } @article{MTMT:32225862, title = {Egyes algaizolátumok immunstimuláló kapacitásának bemutatása}, url = {https://m2.mtmt.hu/api/publication/32225862}, isbn = {9789632699615}, author = {Ardó, László and Berecz, Orsolya and Szűcs, Anita and Dergez, Ágnes Karolina and Ughy, Bettina and Kóbori, Tímea Ottilia and Jeney, Galina and Jakabné Sándor, Zsuzsanna}, journal-iso = {HALÁSZATFEJLESZTÉS}, journal = {HALÁSZATFEJLESZTÉS}, volume = {38}, unique-id = {32225862}, issn = {1219-4816}, year = {2021}, pages = {67-68}, orcid-numbers = {Jakabné Sándor, Zsuzsanna/0000-0002-5216-6964} } @article{MTMT:32225702, title = {Hazai és közép-európai algaizolátumok jellemzése és növekedésének optimalizálása laboratóriumi és pilot méretben}, url = {https://m2.mtmt.hu/api/publication/32225702}, isbn = {9789632699615}, author = {Dergez, Ágnes Karolina and Koós, Ákos and Urbán, Gabriella and Kóbori, Tímea Ottilia and Ardó, László and Antal, Péter and Hajnal, Ferenc and Hatvani, Nóra and Jakabné Sándor, Zsuzsanna and Ughy, Bettina}, journal-iso = {HALÁSZATFEJLESZTÉS}, journal = {HALÁSZATFEJLESZTÉS}, volume = {38}, unique-id = {32225702}, issn = {1219-4816}, year = {2021}, pages = {64-65}, orcid-numbers = {Jakabné Sándor, Zsuzsanna/0000-0002-5216-6964} }