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Relevant bibliographies by topics / Heterocyst development

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Academic literature on the topic 'Heterocyst development'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Heterocyst development"

1

Zhang, Ju-Yuan, Wen-Li Chen, and Cheng-Cai Zhang. "hetR and patS, two genes necessary for heterocyst pattern formation, are widespread in filamentous nonheterocyst-forming cyanobacteria." Microbiology 155, no. 5 (2009): 1418–26. http://dx.doi.org/10.1099/mic.0.027540-0.

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Heterocysts, cells specialized in N2 fixation in cyanobacteria, appeared at near to 2.1 Ga. They constitute one of the oldest forms of differentiated cells in evolution, and are thus an interesting model for studies on evolutionary-developmental biology. How heterocysts arose during evolution remains unknown. In Anabaena PCC 7120, heterocyst development requires, among other genes, hetR for the initiation of heterocyst differentiation, and patS, encoding a diffusible inhibitor of heterocyst formation. In this study, we report that both hetR and patS are widespread among filamentous cyanobacter

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Yoon, Ho-Sung, Martin H. Lee, Jin Xiong, and James W. Golden. "Anabaena sp. Strain PCC 7120 hetY Gene Influences Heterocyst Development." Journal of Bacteriology 185, no. 23 (2003): 6995–7000. http://dx.doi.org/10.1128/jb.185.23.6995-7000.2003.

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ABSTRACT The filamentous cyanobacterium Anabaena (Nostoc) sp. strain PCC 7120 responds to starvation for fixed nitrogen by producing a semiregular pattern of nitrogen-fixing cells called heterocysts. Overexpression of the hetY gene partially suppressed heterocyst formation, resulting in an abnormal heterocyst pattern. Inactivation of hetY increased the time required for heterocyst maturation and caused defects in heterocyst morphology. The 489-bp hetY gene (alr2300), which is adjacent to patS (asl2301), encodes a protein that belongs to a conserved family of bacterial hypothetical proteins tha

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3

Liu, Duan, and James W. Golden. "hetL Overexpression Stimulates Heterocyst Formation in Anabaena sp. Strain PCC 7120." Journal of Bacteriology 184, no. 24 (2002): 6873–81. http://dx.doi.org/10.1128/jb.184.24.6873-6881.2002.

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ABSTRACT The cyanobacterium Anabaena sp. strain PCC 7120 forms single heterocysts about every 10 to 15 vegetative cells along filaments. PatS is thought to be a peptide intercellular signal made by developing heterocysts that prevents neighboring cells from differentiating. Overexpression of the patS gene suppresses heterocyst formation. The hetL gene (all3740) was isolated in a genetic screen to identify genes involved in PatS signaling. Extracopy hetL allowed heterocyst formation in a patS overexpression strain. hetL overexpression from a heterologous promoter in wild-type Anabaena PCC 7120

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Sakr, Samer, Robert Jeanjean, Cheng-Cai Zhang, and Tania Arcondeguy. "Inhibition of Cell Division Suppresses Heterocyst Development in Anabaena sp. Strain PCC 7120." Journal of Bacteriology 188, no. 4 (2006): 1396–404. http://dx.doi.org/10.1128/jb.188.4.1396-1404.2006.

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ABSTRACT When the filamentous cyanobacterium Anabaena PCC 7120 is exposed to combined nitrogen starvation, 5 to 10% of the cells along each filament at semiregular intervals differentiate into heterocysts specialized in nitrogen fixation. Heterocysts are terminally differentiated cells in which the major cell division protein FtsZ is undetectable. In this report, we provide molecular evidence indicating that cell division is necessary for heterocyst development. FtsZ, which is translationally fused to the green fluorescent protein (GFP) as a reporter, is found to form a ring structure at the m

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Valladares, Ana, Iris Maldener, Alicia M. Muro-Pastor, Enrique Flores, and Antonia Herrero. "Heterocyst Development and Diazotrophic Metabolism in Terminal Respiratory Oxidase Mutants of the Cyanobacterium Anabaena sp. Strain PCC 7120." Journal of Bacteriology 189, no. 12 (2007): 4425–30. http://dx.doi.org/10.1128/jb.00220-07.

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ABSTRACT Heterocyst development was analyzed in mutants of the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120 bearing inactivated cox2 and/or cox3 genes, encoding heterocyst-specific terminal respiratory oxidases. At the morphological level, the cox2 cox3 double mutant (strain CSAV141) was impaired in membrane reorganization involving the so-called honeycomb system that in the wild-type strain is largely or exclusively devoted to respiration, accumulated glycogen granules at conspicuously higher levels than the wild type (in both vegetative cells and heterocysts), and showed a

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Yoon, Ho-Sung, and James W. Golden. "PatS and Products of Nitrogen Fixation Control Heterocyst Pattern." Journal of Bacteriology 183, no. 8 (2001): 2605–13. http://dx.doi.org/10.1128/jb.183.8.2605-2613.2001.

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ABSTRACT The filamentous cyanobacterium Anabaena sp. strain PCC 7120 forms a developmental pattern of single heterocysts separated by approximately 10 vegetative cells. Heterocysts differentiate from vegetative cells and are specialized for nitrogen fixation. ThepatS gene, which encodes a small peptide that inhibits heterocyst differentiation, is expressed in proheterocysts and plays a critical role in establishing the heterocyst pattern. Here we present further analysis of patS expression and heterocyst pattern formation. A patS-gfp reporter strain revealed clusters of patS-expressing cells d

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Li, Jian-Hong, Sophie Laurent, Viren Konde, Sylvie Bédu, and Cheng-Cai Zhang. "An increase in the level of 2-oxoglutarate promotes heterocyst development in the cyanobacterium Anabaena sp. strain PCC 7120." Microbiology 149, no. 11 (2003): 3257–63. http://dx.doi.org/10.1099/mic.0.26462-0.

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In the filamentous cyanobacterium Anabaena sp. strain PCC 7120, a starvation of combined nitrogen induces differentiation of heterocysts, cells specialized in nitrogen fixation. How do filaments perceive the limitation of the source of combined nitrogen, and what determines the proportion of heterocysts? In cyanobacteria, 2-oxoglutarate provides a carbon skeleton for the incorporation of inorganic nitrogen. Recently, it has been proposed that the concentration of 2-oxoglutarate reflects the nitrogen status in cyanobacteria. To investigate the effect of 2-oxoglutarate on heterocyst development,

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Zulkefli, Nur Syahidah, and Soon-Jin Hwang. "Heterocyst Development and Diazotrophic Growth of Anabaena variabilis under Different Nitrogen Availability." Life 10, no. 11 (2020): 279. http://dx.doi.org/10.3390/life10110279.

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Nitrogen is globally limiting primary production in the ocean, but some species of cyanobacteria can carry out nitrogen (N) fixation using specialized cells known as heterocysts. However, the effect of N sources and their availability on heterocyst development is not yet fully understood. This study aimed to evaluate the effect of various inorganic N sources on the heterocyst development and cellular growth in an N-fixing cyanobacterium, Anabaena variabilis. Growth rate, heterocyst development, and cellular N content of the cyanobacteria were examined under varying nitrate and ammonium concent

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Moslavac, Suncana, Kerstin Nicolaisen, Oliver Mirus, et al. "A TolC-Like Protein Is Required for Heterocyst Development in Anabaena sp. Strain PCC 7120." Journal of Bacteriology 189, no. 21 (2007): 7887–95. http://dx.doi.org/10.1128/jb.00750-07.

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ABSTRACT The filamentous cyanobacterium Anabaena sp. strain PCC 7120 forms heterocysts in a semiregular pattern when it is grown on N2 as the sole nitrogen source. The transition from vegetative cells to heterocysts requires marked metabolic and morphological changes. We show that a trimeric pore-forming outer membrane β-barrel protein belonging to the TolC family, Alr2887, is up-regulated in developing heterocysts and is essential for diazotrophic growth. Mutants defective in Alr2887 did not form the specific glycolipid layer of the heterocyst cell wall, which is necessary to protect nitrogen

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Jang, Jichan, Lei Shi, Hui Tan, Annick Janicki, and Cheng-Cai Zhang. "Mutual Regulation of ntcA and hetR during Heterocyst Differentiation Requires Two Similar PP2C-Type Protein Phosphatases, PrpJ1 and PrpJ2, in Anabaena sp. Strain PCC 7120." Journal of Bacteriology 191, no. 19 (2009): 6059–66. http://dx.doi.org/10.1128/jb.01271-08.

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ABSTRACT The filamentous cyanobacterium Anabaena sp. strain PCC 7120 can form heterocysts for N2 fixation. Initiation of heterocyst differentiation depends on mutual regulation of ntcA and hetR. Control of hetR expression by NtcA is partially mediated by nrrA, but other factors must be involved in this regulation. Anabaena has two closely related PP2C-type protein phosphatases, PrpJ1 (formerly PrpJ) and PrpJ2; PrpJ1 is involved in heterocyst maturation. In this study, we show that PrpJ2, like PrpJ1, has Mn2+-dependent phosphatase activity. We further demonstrate that whereas prpJ2 is dispensab

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Dissertations / Theses on the topic "Heterocyst development"

1

Aldea, Maria Ramona. "Identification of novel regulatory mechanisms controlling heterocyst development in Anabaena Sp. strain PCC 7120." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2996.

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Chen, Hai-Lin. "Application, at single-cell level, of FRET for the study of the dynamics of 2-oxoglutarate : a signal for heterocyst development in Anabaena sp. PCC 7120." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4038.

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Les métabolismes du carbone et de l’azote sont étroitement coordonnés chez tous les organismes vivants en raison de l’importance de ces deux éléments dans les différents mécanismes physiologiques. Le 2-oxoglutarate (2-OG) est une molécule signal conservée chez tous les organismes et est impliqué dans la balance carbone / azote. Malgré son importance, il n’existe pas d’outil permettant de mesurer la concentration de 2-OG à l’échelle cellulaire. Pour combler cette carence, nous avons utilisé Anabaena sp. PCC 7120 pour construire un système de quantification du 2-OG in vitro et in vivo. Cette bac

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Feldmann, Erik A. "Biophysical characterization of heterocyst differentiation regulators, HetR and PatS, from the cyanobacterium, Anabaena sp. strain PCC 7120 and structural biology of bacterial proteins from the Northeast Structural Genomics Consortium." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1342801532.

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Thayer, Rebecca Elizabeth. "Characterization of two genes up-regulated during heterocyst development in the cyanobacterium Anabaena sp. strain PCC 7120." 2006. http://www.lib.ncsu.edu/theses/available/etd-05152006-150909/unrestricted/etd.pdf.

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Book chapters on the topic "Heterocyst development"

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Wolk, C. Peter. "Heterocyst Formation in Anabaena." In Prokaryotic Development. ASM Press, 2014. http://dx.doi.org/10.1128/9781555818166.ch4.

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Wolk, C. Peter, Anneliese Ernst, and Jeff Elhai. "Heterocyst Metabolism and Development." In The Molecular Biology of Cyanobacteria. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0227-8_27.

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Ramona Aldea, M., Krithika Kumar, and James W. Golden. "Heterocyst Development and Pattern Formation." In Chemical Communication among Bacteria. ASM Press, 2014. http://dx.doi.org/10.1128/9781555815578.ch6.

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Wolk, C. Peter, Enrique Flores, Georg Schmetterer, Antonia Herrero, and Jeffrey Elhai. "Development of the Genetics of Heterocyst-Forming Cyanobacteria." In Nitrogen fixation research progress. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5175-4_67.

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Sami, Neha, and Tasneem Fatma. "DNA Rearrangements in Cyanobacterial Nitrogen Fixing Genes During Heterocyst Development." In Phycobiotechnology. Apple Academic Press, 2020. http://dx.doi.org/10.1201/9781003019510-10.

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Zhao, Jindong, and C. Peter Wolk. "Developmental Biology of Heterocysts, 2006." In Myxobacteria. ASM Press, 2014. http://dx.doi.org/10.1128/9781555815677.ch23.

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