scholarly journals The land plant‐specific MIXTA‐MYB lineage is implicated in the early evolution of the plant cuticle and the colonization of land

2020 ◽  
Author(s):  
Bo Xu ◽  
Lin Taylor ◽  
Boas Pucker ◽  
Tao Feng ◽  
Beverley J. Glover ◽  
...  
Keyword(s):  
Land Plant ◽  
Early Evolution ◽  
Plant Cuticle ◽  
Colonization Of Land

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.

scholarly journals Early evolution of the land plant circadian clock

2017 ◽  
Vol 216 (2) ◽  
pp. 576-590 ◽  
Author(s):  
Anna-Malin Linde ◽  
D. Magnus Eklund ◽  
Akane Kubota ◽  
Eric R. A. Pederson ◽  
Karl Holm ◽  
...  
Keyword(s):  
Circadian Clock ◽  
Land Plant ◽  
Early Evolution

scholarly journals Evolutionary dynamics of mycorrhizal symbiosis in land plant diversification

2017 ◽  
Author(s):  
Frida A.A. Feijen ◽  
Rutger A. Vos ◽  
Jorinde Nuytinck ◽  
Vincent S.F.T. Merckx
Keyword(s):  
Soil Fungi ◽  
Evolutionary Dynamics ◽  
State Transition ◽  
Land Plant ◽  
Land Plants ◽  
Mycorrhizal Symbiosis ◽  
Large Species ◽  
Mycorrhizal Associations ◽  
Colonization Of Land ◽  
Early Land

Mycorrhizal symbiosis between soil fungi and land plants is one of the most widespread and ecologically important mutualisms on earth. It has long been hypothesized that the Glomeromycotina, the mycorrhizal symbionts of the majority of plants, facilitated colonization of land by plants in the Ordovician. This view was recently challenged by the discovery of mycorrhizal associations with Mucoromycotina in several early diverging lineages of land plants. Utilizing a large, species-level database of plants’ mycorrhizal associations and a Bayesian approach to state transition dynamics we here show that the recruitment of Mucoromycotina is the best supported transition from a non-mycorrhizal state. We further found that transitions between different combinations of either or both of Mucoromycotina and Glomeromycotina occur at high rates and found similar promiscuity among combinations that include either or both of Glomeromycotina and Ascomycota with a nearly fixed association with Basidiomycota. Our results demonstrate that under the most likely scenario symbiosis with Mucoromycotina enabled the establishment of early land plants.

scholarly journals A ligand-independent origin of abscisic acid perception

2019 ◽  
Vol 116 (49) ◽  
pp. 24892-24899 ◽  
Author(s):  
Yufei Sun ◽  
Ben Harpazi ◽  
Akila Wijerathna-Yapa ◽  
Ebe Merilo ◽  
Jan de Vries ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Desiccation Tolerance ◽  
Algal Species ◽  
Signal Transduction Pathway ◽  
Land Plant ◽  
Land Plants ◽  
Receptor Signal ◽  
Ancestral Function ◽  
Colonization Of Land ◽  
Successful Colonization

Land plants are considered monophyletic, descending from a single successful colonization of land by an aquatic algal ancestor. The ability to survive dehydration to the point of desiccation is a key adaptive trait enabling terrestrialization. In extant land plants, desiccation tolerance depends on the action of the hormone abscisic acid (ABA) that acts through a receptor-signal transduction pathway comprising a PYRABACTIN RESISTANCE 1-like (PYL)–PROTEIN PHOSPHATASE 2C (PP2C)–SNF1-RELATED PROTEIN KINASE 2 (SnRK2) module. Early-diverging aeroterrestrial algae mount a dehydration response that is similar to that of land plants, but that does not depend on ABA: Although ABA synthesis is widespread among algal species, ABA-dependent responses are not detected, and algae lack an ABA-binding PYL homolog. This raises the key question of how ABA signaling arose in the earliest land plants. Here, we systematically characterized ABA receptor-like proteins from major land plant lineages, including a protein found in the algal sister lineage of land plants. We found that the algal PYL-homolog encoded by Zygnema circumcarinatum has basal, ligand-independent activity of PP2C repression, suggesting this to be an ancestral function. Similarly, a liverwort receptor possesses basal activity, but it is further activated by ABA. We propose that co-option of ABA to control a preexisting PP2C-SnRK2-dependent desiccation-tolerance pathway enabled transition from an all-or-nothing survival strategy to a hormone-modulated, competitive strategy by enabling continued growth of anatomically diversifying vascular plants in dehydrative conditions, enabling them to exploit their new environment more efficiently.

scholarly journals The evolution of land plants: a perspective from horizontal gene transfer

2014 ◽  
Vol 83 (4) ◽  
pp. 363-368 ◽  
Author(s):  
Qia Wang ◽  
Hang Sun ◽  
Jinling Huang
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Land Plant ◽  
Plant Evolution ◽  
Land Plants ◽  
Plant Colonization ◽  
Mitochondrial Genome Evolution ◽  
Land Plant Evolution ◽  
Colonization Of Land

Recent studies suggest that horizontal gene transfer (HGT) played a significant role in the evolution of eukaryotic lineages. We here review the mechanisms of HGT in plants and the importance of HGT in land plant evolution. In particular, we discuss the role of HGT in plant colonization of land, phototropic response, C<sub>4</sub> photosynthesis, and mitochondrial genome evolution.

Sign in / Sign up

Export Citation Format

Share Document