scholarly journals Eukaryotic Components Remodeled Chloroplast Nucleoid Organization during the Green Plant Evolution

2015 ◽  
Vol 8 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Yusuke Kobayashi ◽  
Mari Takusagawa ◽  
Naomi Harada ◽  
Yoichiro Fukao ◽  
Shohei Yamaoka ◽  
...  
Keyword(s):  
Green Plant ◽  
Plant Evolution ◽  
Chloroplast Nucleoid

scholarly journals Ancestral chloroplast genome in Mesostigma viride reveals an early branch of green plant evolution

Nature ◽  
2000 ◽  
Vol 403 (6770) ◽  
pp. 649-652 ◽  
Author(s):  
Claude Lemieux ◽  
Christian Otis ◽  
Monique Turmel
Keyword(s):  
Chloroplast Genome ◽  
Green Plant ◽  
Plant Evolution

scholarly journals The Role of bZIP Transcription Factors in Green Plant Evolution: Adaptive Features Emerging from Four Founder Genes

PLoS ONE ◽  
2008 ◽  
Vol 3 (8) ◽  
pp. e2944 ◽  
Author(s):  
Luiz Gustavo Guedes Corrêa ◽  
Diego Mauricio Riaño-Pachón ◽  
Carlos Guerra Schrago ◽  
Renato Vicentini dos Santos ◽  
Bernd Mueller-Roeber ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Green Plant ◽  
Plant Evolution ◽  
Bzip Transcription Factors

scholarly journals A pan-plant protein complex map reveals deep conservation and novel assemblies

2019 ◽  
Author(s):  
Claire D. McWhite ◽  
Ophelia Papoulas ◽  
Kevin Drew ◽  
Rachael M. Cox ◽  
Viviana June ◽  
...  
Keyword(s):  
Protein Complexes ◽  
Green Plant ◽  
Plant Evolution ◽  
Economic Systems ◽  
Plant Proteins ◽  
Protein Assemblies ◽  
Uncharacterized Protein ◽  
Protein Functions ◽  
Novel Interactions ◽  
Mutant Phenotypes

SUMMARYPlants are foundational to global ecological and economic systems, yet most plant proteins remain uncharacterized. Protein interaction networks often suggest protein functions and open new avenues to characterize genes and proteins. We therefore systematically determined protein complexes from 13 plant species of scientific and agricultural importance, greatly expanding the known repertoire of stable protein complexes in plants. Using co-fractionation mass spectrometry, we recovered known complexes, confirmed complexes predicted to occur in plants, and identified novel interactions conserved over 1.1 billion years of green plant evolution. Several novel complexes are involved in vernalization and pathogen defense, traits critical to agriculture. We also uncovered plant analogs of animal complexes with distinct molecular assemblies, including a megadalton-scale tRNA multi-synthetase complex. The resulting map offers the first cross-species view of conserved, stable protein assemblies shared across plant cells and provides a mechanistic, biochemical framework for interpreting plant genetics and mutant phenotypes.

scholarly journals Degradation of key photosynthetic genes in the critically endangered semi-aquatic flowering plant Saniculiphyllum guangxiense (Saxifragaceae)

2019 ◽  
Author(s):  
Ryan A. Folk ◽  
Neeka Sewnath ◽  
Chun-Lei Xiang ◽  
Brandon T. Sinn ◽  
Robert P. Guralnick
Keyword(s):  
Plastid Genome ◽  
Gene Loss ◽  
Green Plant ◽  
Plant Evolution ◽  
Critically Endangered ◽  
Gene Content ◽  
Flowering Plant ◽  
Plastid Gene ◽  
Plastid Genomes ◽  
Mycoheterotrophic Plants

AbstractBackgroundPlastid gene loss and pseudogenization has been widely documented in parasitic and mycoheterotrophic plants, which have relaxed selective constraints on photosynthetic function. More enigmatic are sporadic reports of degradation and loss of important photosynthesis genes in lineages thought to be fully photosynthetic. Here we report the complete plastid genome of Saniculiphyllum guangxiense, a critically endangered and phylogenetically isolated plant lineage, along with genomic evidence of reduced chloroplast function. We also report 22 additional plastid genomes representing the diversity of its containing clade Saxifragales, characterizing gene content and placing variation in a broader phylogenetic context.ResultsWe find that the plastid genome of Saniculiphyllum has experienced pseudogenization of five genes of the NDH complex (ndhA, ndhB, ndhD, ndhF, and ndhK), previously reported in flowering plants with an aquatic habit, as well as the more surprising pseudogenization of two genes more central to photosynthesis (ccsA and cemA), contrasting with strong phylogenetic conservatism of plastid gene content in all other sampled Saxifragales. These genes participate in photooxidative protection, cytochrome synthesis, and carbon uptake. Nuclear paralogs exist for all seven plastid pseudogenes, yet these are also unlikely to be functional.ConclusionsSaniculiphyllum appears to represent the greatest degree of plastid gene loss observed to date in any fully photosynthetic lineage, yet plastid genome length, structure, and substitution rate are within the variation previously reported for photosynthetic plants. These results highlight the increasingly appreciated dynamism of plastid genomes, otherwise highly conserved across a billion years of green plant evolution, in plants with highly specialized life history traits.

Silene lulakabadensis (Caryophyllaceae), a New Species from Iran

2020 ◽  
Vol 28 (1) ◽  
pp. 24-28
Author(s):  
Mahnaz Heidari Rikan ◽  
Farrokh Ghahremaninejad ◽  
Mostafa Assadi
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Green Plant ◽  
Critically Endangered ◽  
Rare Plant ◽  
Soil Slopes ◽  
Dark Green ◽  
A New Species

Silene lulakabadensis Heidari, F. Ghahrem. & Assadi is described as a new species from Zanjan Province, Iran. The new species is a dark green plant, perennial and woody at the base, that was collected on marl soil slopes at 2100 m. It is believed to be closely related to S. eriocalycina Boiss. from section Auriculatae (Boiss.) Schischk. but is a smaller plant, with much shorter internodes, and pinkish-white retuse to emarginate petals with very small or no scales. It is a very rare plant and its conservation status is assessed as Critically Endangered.

scholarly journals DELAYED LIGHT EMISSION IN GREEN PLANT MATERIALS: TEMPERATURE-DEPENDENCE AND QUANTUM YIELD

1958 ◽  
Vol 44 (10) ◽  
pp. 1035-1047 ◽  
Author(s):  
G. Tollin ◽  
E. Fujimori ◽  
M. Calvin
Keyword(s):  
Quantum Yield ◽  
Temperature Dependence ◽  
Light Emission ◽  
Green Plant ◽  
Plant Materials ◽  
Delayed Light Emission

scholarly journals From tree to architecture: how functional morphology of arborescence connects plant biology, evolution and physics

2021 ◽  
Author(s):  
Anita Roth-Nebelsick ◽  
Tatiana Miranda ◽  
Martin Ebner ◽  
Wilfried Konrad ◽  
Christopher Traiser
Keyword(s):  
Land Plant ◽  
Plant Evolution ◽  
Ecological Niches ◽  
Long Distance ◽  
Ongoing Research ◽  
Long Distance Transport ◽  
Theoretical Approaches ◽  
Trade Offs ◽  
Interfacial Physics ◽  
Plant Water Transport

AbstractTrees are the fundamental element of forest ecosystems, made possible by their mechanical qualities and their highly sophisticated conductive tissues. The evolution of trees, and thereby the evolution of forests, were ecologically transformative and affected climate and biogeochemical cycles fundamentally. Trees also offer a substantial amount of ecological niches for other organisms, such as epiphytes, creating a vast amount of habitats. During land plant evolution, a variety of different tree constructions evolved and their constructional principles are a subject of ongoing research. Understanding the “natural construction” of trees benefits strongly from methods and approaches from physics and engineering. Plant water transport is a good example for the ongoing demand for interdisciplinary efforts to unravel form-function relationships on vastly differing scales. Identification of the unique mechanism of water long-distance transport requires a solid basis of interfacial physics and thermodynamics. Studying tree functions by using theoretical approaches is, however, not a one-sided affair: The complex interrelationships between traits, functionality, trade-offs and phylogeny inspire engineers, physicists and architects until today.

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