A Conserved Transcription Factor Mediates Nuclear Control of Organelle Biogenesis in Anciently Diverged Land Plants

Yasumura, Yuki; Moylan, Elizabeth; Langdale, Jane A.

doi:10.1105/tpc.105.033191

Cited by 141 publications

(143 citation statements)

References 39 publications

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“…The development of chloroplasts is for example regulated by the GOLDEN2-LIKE transcription factors in angiosperms as well as in mosses, but cannot be found in Chlamydomonas reinhardtii (Yasumura et al 2005).…”

Section: Several Regulatory Pathways Evolved In the Common Ancestor Omentioning

confidence: 99%

Can mosses serve as model organisms for forest research?

Müller

Gütle

Jacquot

et al. 2016

Annals of Forest Science

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& Key message Based on their impact on many ecosystems, we review the relevance of mosses in research regarding stress tolerance, metabolism, and cell biology. We introduce the potential use of mosses as complementary model systems in molecular forest research, with an emphasis on the most developed model moss Physcomitrella patens. & Context and aims Mosses are important components of several ecosystems. The moss P. patens is a well-established nonvascular model plant with a high amenability to molecular biology techniques and was designated as a JGI plant flagship genome. In this review, we will provide an introduction to moss research and highlight the characteristics of P. patens and other mosses as a potential complementary model system for forest research. & Methods Starting with an introduction into general moss biology, we summarize the knowledge about moss physiology and differences to seed plants. We provide an overview of the current research areas utilizing mosses, pinpointing potential links to tree biology. To complement literature review, we discuss moss advantages and available resources regarding molecular biology techniques. & Results and conclusion During the last decade, many fundamental processes and cell mechanisms have been studied in mosses and seed plants, increasing our knowledge of plant evolution. Additionally, moss-specific mechanisms of stress tolerance are under investigation to understand their resilience in ecosystems. Thus, using the advantages of model mosses such as P. patens is of high interest for various research approaches, including stress tolerance, organelle biology, cell polarity, and secondary metabolism.

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Section: Several Regulatory Pathways Evolved In the Common Ancestor Omentioning

confidence: 99%

Can mosses serve as model organisms for forest research?

Müller

Gütle

Jacquot

et al. 2016

Annals of Forest Science

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“…Several genes encoding proteins associated with light harvesting and chlorophyll biosynthesis are downregulated in glk1 glk2 mutants (Fitter et al, 2002;Yasumura et al, 2005). To determine whether this defect can be rescued by constitutive expression of GLK1 or GLK2, transcript levels were compared in wild-type, double mutant, and overexpressing plants.…”

Section: Constitutive Expression Of Glk1 and Glk2 Stimulates Expressimentioning

confidence: 99%

“…In each species examined, GLK genes exist as a homologous pair named GLK1 and GLK2. In moss and Arabidopsis, GLK genes are redundant and functionally equivalent, such that only glk1 glk2 double mutants exhibit a perturbed phenotype (Yasumura et al, 2005;Waters et al, 2008). Arabidopsis double mutants are pale green, and mesophyll cells contain small chloroplasts with sparse thylakoid membranes that fail to form grana.…”

Section: Introductionmentioning

confidence: 99%

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GLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in Arabidopsis

et al. 2009

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Chloroplasts of photosynthetic organisms harness light energy and convert it into chemical energy. In several land plants, GOLDEN2-LIKE (GLK) transcription factors are required for chloroplast development, as glk1 glk2 double mutants are pale green and deficient in the formation of the photosynthetic apparatus. We show here that glk1 glk2 double mutants of Arabidopsis thaliana accumulate abnormal levels of chlorophyll precursors and that constitutive GLK gene expression leads to increased accumulation of transcripts for antenna proteins and chlorophyll biosynthetic enzymes. To establish the primary targets of GLK gene action, an inducible expression system was used in combination with transcriptome analysis. Following induction, transcript pools were substantially enriched in genes involved in chlorophyll biosynthesis, light harvesting, and electron transport. Chromatin immunoprecipitation experiments confirmed the direct association of GLK1 protein with target gene promoters, revealing a putative regulatory cis-element. We show that GLK proteins influence photosynthetic gene expression independently of the phyB signaling pathway and that the two GLK genes are differentially responsive to plastid retrograde signals. These results suggest that GLK genes help to coregulate and synchronize the expression of a suite of nuclear photosynthetic genes and thus act to optimize photosynthetic capacity in varying environmental and developmental conditions.

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“…More specifically, GOLDEN 2-like (GLK) TFs are required for correct stacking of thylakoids within chloroplasts, although it is not known in detail how they exert their function in this process. One possible model is that GLKs regulate the transcription of genes encoding thylakoid-stabilizing factor(s) (Yasumura et al 2005). We did not detect the ortholog of GLK in the sequenced Chlamydomonas genome, which is consistent with the fact that chloroplast thylakoid stacking is less advanced in this alga as compared to bryophytes and angiosperms, as previously discussed (Yasumura et al 2005).…”

Section: Transcription Factors In Eukaryotesmentioning

confidence: 99%

Green Transcription Factors: A Chlamydomonas Overview

et al. 2008

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Transcription factors (TFs) control gene expression by interacting with cis-elements in target gene promoters. Transcription regulators (TRs) assist in controlling gene expression through interaction with TFs, chromatin remodeling, or other mechanisms. Both types of proteins thus constitute master controllers of dynamic transcriptional networks. To uncover such control elements in the photosynthetic green alga Chlamydomonas reinhardtii, we performed a comprehensive analysis of its genome sequence. In total, we identified 234 genes encoding 147 TFs and 87 TRs of $40 families. The set of putative TFs and TRs, including their transcript and protein sequences, domain architectures, and supporting information about putative orthologs, is available at http:/ /plntfdb.bio.uni-potsdam.de/v2.0/. Twelve of 34 plant-specific TF families were found in at least one algal species, indicating their early evolutionary origin. Twenty-two plant-specific TF families and one plant-specific TR family were not observed in algae, suggesting their specific association with developmental or physiological processes characteristic to multicellular plants. We also analyzed the occurrence of proteins that constitute the light-regulated transcriptional network in angiosperms and found putative algal orthologs for most of them. Our analysis provides a solid ground for future experimental studies aiming at deciphering the transcriptional regulatory networks in green algae.

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A Conserved Transcription Factor Mediates Nuclear Control of Organelle Biogenesis in Anciently Diverged Land Plants

Cited by 141 publications

References 39 publications

Can mosses serve as model organisms for forest research?

Can mosses serve as model organisms for forest research?

GLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in Arabidopsis

Green Transcription Factors: A Chlamydomonas Overview

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