scholarly journals Patterns of cell division in the filamentous Desmidiaceae, close green algal relatives of land plants

2008 ◽  
Vol 95 (6) ◽  
pp. 643-654 ◽  
Author(s):  
John D. Hall ◽  
Richard M. McCourt ◽  
Charles F. Delwiche
Keyword(s):  
Cell Division ◽  
Land Plants ◽  
Green Algal

MONOPLASTIDIC CELL DIVISION IN LOWER LAND PLANTS

1990 ◽  
Vol 77 (4) ◽  
pp. 559-571 ◽  
Author(s):  
Roy C. Brown ◽  
Betty E. Lemmon
Keyword(s):  
Cell Division ◽  
Land Plants

The gain of two chloroplast tRNA introns marks the green algal ancestors of land plants

Nature ◽  
1990 ◽  
Vol 345 (6272) ◽  
pp. 268-270 ◽  
Author(s):  
J. R. Manhart ◽  
J. D. Palmer
Keyword(s):  
Land Plants ◽  
Green Algal

scholarly journals Algal ancestor of land plants was preadapted for symbiosis

2015 ◽  
Vol 112 (43) ◽  
pp. 13390-13395 ◽  
Author(s):  
Pierre-Marc Delaux ◽  
Guru V. Radhakrishnan ◽  
Dhileepkumar Jayaraman ◽  
Jitender Cheema ◽  
Mathilde Malbreil ◽  
...  
Keyword(s):  
Root Colonization ◽  
Land Plant ◽  
Land Plants ◽  
Recent Common Ancestor ◽  
Mycorrhizal Symbiosis ◽  
Specific Expression ◽  
Symbiotic Associations ◽  
Most Recent Common Ancestor ◽  
Green Algal ◽  
Colonization Of Land

Colonization of land by plants was a major transition on Earth, but the developmental and genetic innovations required for this transition remain unknown. Physiological studies and the fossil record strongly suggest that the ability of the first land plants to form symbiotic associations with beneficial fungi was one of these critical innovations. In angiosperms, genes required for the perception and transduction of diffusible fungal signals for root colonization and for nutrient exchange have been characterized. However, the origin of these genes and their potential correlation with land colonization remain elusive. A comprehensive phylogenetic analysis of 259 transcriptomes and 10 green algal and basal land plant genomes, coupled with the characterization of the evolutionary path leading to the appearance of a key regulator, a calcium- and calmodulin-dependent protein kinase, showed that the symbiotic signaling pathway predated the first land plants. In contrast, downstream genes required for root colonization and their specific expression pattern probably appeared subsequent to the colonization of land. We conclude that the most recent common ancestor of extant land plants and green algae was preadapted for symbiotic associations. Subsequent improvement of this precursor stage in early land plants through rounds of gene duplication led to the acquisition of additional pathways and the ability to form a fully functional arbuscular mycorrhizal symbiosis.

The Green Algal Ancestry of Land Plants as Revealed by the Chloroplast Genome

2007 ◽  
Vol 168 (5) ◽  
pp. 679-689 ◽  
Author(s):  
Monique Turmel ◽  
Jean‐François Pombert ◽  
Patrick Charlebois ◽  
Christian Otis ◽  
Claude Lemieux
Keyword(s):  
Chloroplast Genome ◽  
Land Plants ◽  
Green Algal

The Evolution of Cell Division: From Streptophyte Algae to Land Plants

2016 ◽  
Vol 21 (10) ◽  
pp. 872-883 ◽  
Author(s):  
Henrik Buschmann ◽  
Sabine Zachgo
Keyword(s):  
Cell Division ◽  
Land Plants

scholarly journals A contemplation on the secondary origin of green algal and plant plastids

2014 ◽  
Vol 83 (4) ◽  
pp. 331-336 ◽  
Author(s):  
Eunsoo Kim ◽  
Shinichiro Maruyama
Keyword(s):  
Land Plants ◽  
Single Origin ◽  
Phylogenetic Studies ◽  
Green Algal ◽  
Secondary Origin ◽  
Primary Plastid ◽  
Evolutionary Studies ◽  
New Hypothesis ◽  
Existing Data ◽  
Lines Of Evidence

A single origin of plastids and the monophyly of three “primary” plastid-containing groups – the Chloroplastida (or Viridiplantae; green algae+land plants), Rhodophyta, and Glaucophyta – are widely accepted, mainstream hypotheses that form the basis for many comparative evolutionary studies. This “Archaeplastida” hypothesis, however, thus far has not been unambiguously confirmed by phylogenetic studies based on nucleocytoplasmic markers. In view of this as well as other lines of evidence, we suggest the testing of an alternate hypothesis that plastids of the Chloroplastida are of secondary origin. The new hypothesis is in agreement with, or perhaps better explains, existing data, including both the plastidal and nucleocytoplasmic characteristics of the Chloroplastida in comparison to those of other groups.

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