Structural analysis of linear hydroxyproline-bound O-glycans of Chlamydomonas reinhardtii—conservation of the inner core in Chlamydomonas and land plants

2007 ◽  
Vol 342 (17) ◽  
pp. 2557-2566 ◽  
Author(s):  
Klaus Bollig ◽  
Marc Lamshöft ◽  
Kristian Schweimer ◽  
Franz-Josef Marner ◽  
Herbert Budzikiewicz ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Chlamydomonas Reinhardtii ◽  
Inner Core ◽  
Land Plants

scholarly journals Deep evolutionary origin of gamete-directed zygote activation by KNOX/BELL transcription factors in green plants

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Tetsuya Hisanaga ◽  
Shota Fujimoto ◽  
Yihui Cui ◽  
Katsutoshi Sato ◽  
Ryosuke Sano ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factors ◽  
Chlamydomonas Reinhardtii ◽  
Plant Species ◽  
Land Plant ◽  
Land Plants ◽  
Marchantia Polymorpha ◽  
Mating Types ◽  
Meristem Maintenance

KNOX and BELL transcription factors regulate distinct steps of diploid development in plants. In the green alga Chlamydomonas reinhardtii, KNOX and BELL proteins are inherited by gametes of the opposite mating types and heterodimerize in zygotes to activate diploid development. By contrast, in land plants such as Physcomitrium patens and Arabidopsis thaliana, KNOX and BELL proteins function in meristem maintenance and organogenesis during the later stages of diploid development. However, whether the contrasting functions of KNOX and BELL were acquired independently in algae and land plants is currently unknown. Here, we show that in the basal land plant species Marchantia polymorpha, gamete-expressed KNOX and BELL are required to initiate zygotic development by promoting nuclear fusion in a manner strikingly similar to that in C. reinhardtii. Our results indicate that zygote activation is the ancestral role of KNOX/BELL transcription factors, which shifted toward meristem maintenance as land plants evolved.

scholarly journals Deep evolutionary origin of gamete-directed zygote activation by KNOX/BELL transcription factors in green plants

2020 ◽  
Author(s):  
Tetsuya Hisanaga ◽  
Shota Fujimoto ◽  
Yihui Cui ◽  
Katsutoshi Sato ◽  
Ryosuke Sano ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Chlamydomonas Reinhardtii ◽  
Plant Species ◽  
Green Alga ◽  
Land Plant ◽  
Land Plants ◽  
Marchantia Polymorpha ◽  
Mating Types ◽  
Meristem Maintenance

AbstractKNOX and BELL transcription factors regulate distinct steps of diploid development in the green lineages. In the green alga Chlamydomonas reinhardtii, KNOX and BELL proteins are inherited by gametes of the opposite mating types, and heterodimerize in zygotes to activate diploid development. By contrast, in land plants such as Physcomitrella and Arabidopsis, KNOX and BELL proteins function in meristem maintenance and organogenesis during the later stages of diploid development. However, whether the contrasting functions of KNOX and BELL were acquired independently in algae and land plants is currently unknown. Here we show that in the basal land plant species Marchantia polymorpha, gamete-expressed KNOX and BELL are required to initiate zygotic development by promoting nuclear fusion in a manner strikingly similar to that of C. reinhardtii. Our results indicate that zygote activation is the ancestral role of KNOX/BELL transcription factors, which shifted toward meristem maintenance as land plants evolved.

Structural Analysis of the Deep Rough Lipopolysaccharide from Gram Negative BacteriumAlteromonas macleodii ATCC 27126T: The First Finding of β-Kdo in the Inner Core of Lipopolysaccharides

2006 ◽  
Vol 2006 (20) ◽  
pp. 4710-4716 ◽  
Author(s):  
Valeria Liparoti ◽  
Antonio Molinaro ◽  
Luisa Sturiale ◽  
Domenico Garozzo ◽  
Evgeny L. Nazarenko ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Inner Core ◽  
Gram Negative ◽  
First Finding

Structural analysis revealed a novel conformation of the NTRC reductase domain from Chlamydomonas reinhardtii

2021 ◽  
pp. 107829
Author(s):  
Giulia Maria Marchetti ◽  
Friederike Füsser ◽  
Rohit Kumar Singh ◽  
Monika Brummel ◽  
Oliver Koch ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Chlamydomonas Reinhardtii ◽  
Reductase Domain

scholarly journals Structural Analysis of the Rubisco-Assembly Chaperone RbcX-II from Chlamydomonas reinhardtii

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0135448 ◽  
Author(s):  
Andreas Bracher ◽  
Thomas Hauser ◽  
Cuimin Liu ◽  
F. Ulrich Hartl ◽  
Manajit Hayer-Hartl
Keyword(s):  
Structural Analysis ◽  
Chlamydomonas Reinhardtii

scholarly journals Characterization of the Chlamydomonas reinhardtii phycosphere reveals conserved features of the plant microbiota

2021 ◽  
Author(s):  
Paloma Durán ◽  
José Flores-Uribe ◽  
Kathrin Wippel ◽  
Pengfan Zhang ◽  
Rui Guan ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Chlamydomonas Reinhardtii ◽  
Heterotrophic Bacteria ◽  
Flowering Plants ◽  
Land Plants ◽  
Photosynthetic Organisms ◽  
Ecological Principles ◽  
Plant Microbiota ◽  
Root Microbiota

AbstractMicroscopic algae release organic compounds to the region immediately surrounding their cells, known as the phycosphere, constituting a niche for colonization by heterotrophic bacteria. These bacteria take up algal photoassimilates and provide beneficial functions to their host, in a process that resembles the establishment of microbial communities associated with the roots and rhizospheres of land plants. Here, we characterize the microbiota of the model alga Chlamydomonas reinhardtii and reveal extensive taxonomic and functional overlap with the root microbiota of land plants. Reconstitution experiments using synthetic communities derived from C. reinhardtii and Arabidopsis thaliana show that phycosphere and root bacteria assemble into taxonomically equivalent communities on either host. We show that provision of diffusible metabolites is not sufficient for phycosphere community establishment, which additionally requires physical proximity to the host. Our data suggests that the microbiota of photosynthetic organisms, including green algae and flowering plants, assembles according to core ecological principles.

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