Molecular evolution of the substrate specificity of ent-kaurene synthases to adapt to gibberellin biosynthesis in land plants

2014 ◽  
Vol 462 (3) ◽  
pp. 539-546 ◽  
Author(s):  
Manami Shimane ◽  
Yohei Ueno ◽  
Keiko Morisaki ◽  
Shingo Oogami ◽  
Masahiro Natsume ◽  
...  
Keyword(s):  
Molecular Evolution ◽  
Substrate Specificity ◽  
Flowering Plants ◽  
Land Plants ◽  
Gibberellin Biosynthesis ◽  
Selaginella Moellendorffii

We analysed the function of monofunctional diterpene cyclases in Selaginella moellendorffii. Investigation of the substrate specificity of ent-kaurene synthases of non-flowering and flowering plants suggests that monofunctional diterpene cyclases involved in ent-kaurene biosynthesis may have co-evolved with gibberellin biosynthesis.

scholarly journals Simultaneous parsimony jackknife analysis of 2538rbcL DNA sequences reveals support for major clades of green plants, land plants, seed plants and flowering plants

1998 ◽  
Vol 213 (3-4) ◽  
pp. 259-287 ◽  
Author(s):  
Mari K�llersj� ◽  
James S. Farris ◽  
Mark W. Chase ◽  
Birgitta Bremer ◽  
Michael F. Fay ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Flowering Plants ◽  
Land Plants ◽  
Seed Plants ◽  
Green Plants ◽  
Jackknife Analysis

scholarly journals Introduction: the essential role of the Pteridophyta in the study of land plants

1985 ◽  
Vol 86 ◽  
pp. 1-4
Author(s):  
P. R. Bell
Keyword(s):  
Essential Role ◽  
Flowering Plants ◽  
Land Plants ◽  
Useful Knowledge

SynopsisArguments based on their technical advantages, undoubted antiquity and lack of evolutionary extravagances are advanced for promoting the study of the Pteridophyta. Sound interpretations of fundamental aspects of the land plants, together with useful knowledge, are likely to follow, and grievous errors arising from too great a concentration on the flowering plants can be avoided.

scholarly journals Terrestrial-type nitrogen-fixing symbiosis between seagrass and a marine bacterium

Nature ◽  
2021 ◽  
Author(s):  
Wiebke Mohr ◽  
Nadine Lehnen ◽  
Soeren Ahmerkamp ◽  
Hannah K. Marchant ◽  
Jon S. Graf ◽  
...  
Keyword(s):  
Amino Acids ◽  
Marine Bacterium ◽  
Posidonia Oceanica ◽  
Flowering Plants ◽  
Land Plants ◽  
Seagrass Meadows ◽  
Marine Habitats ◽  
Intimate Association ◽  
Related Plant ◽  
Early Land

AbstractSymbiotic N2-fixing microorganisms have a crucial role in the assimilation of nitrogen by eukaryotes in nitrogen-limited environments1–3. Particularly among land plants, N2-fixing symbionts occur in a variety of distantly related plant lineages and often involve an intimate association between host and symbiont2,4. Descriptions of such intimate symbioses are lacking for seagrasses, which evolved around 100 million years ago from terrestrial flowering plants that migrated back to the sea5. Here we describe an N2-fixing symbiont, ‘Candidatus Celerinatantimonas neptuna’, that lives inside seagrass root tissue, where it provides ammonia and amino acids to its host in exchange for sugars. As such, this symbiosis is reminiscent of terrestrial N2-fixing plant symbioses. The symbiosis between Ca. C. neptuna and its host Posidonia oceanica enables highly productive seagrass meadows to thrive in the nitrogen-limited Mediterranean Sea. Relatives of Ca. C. neptuna occur worldwide in coastal ecosystems, in which they may form similar symbioses with other seagrasses and saltmarsh plants. Just like N2-fixing microorganisms might have aided the colonization of nitrogen-poor soils by early land plants6, the ancestors of Ca. C. neptuna and its relatives probably enabled flowering plants to invade nitrogen-poor marine habitats, where they formed extremely efficient blue carbon ecosystems7.

scholarly journals Angiosperm phylogeny poster (APP) – Flowering plant systematics, 2017

2017 ◽  
Author(s):  
Theodor C H Cole ◽  
Hartmut H Hilger ◽  
Peter F Stevens
Keyword(s):  
Botanical Garden ◽  
Flowering Plants ◽  
Land Plants ◽  
Flowering Plant ◽  
Evolutionary Relationships ◽  
Plant Systematics ◽  
Educational Tool ◽  
Color Coding ◽  
Missouri Botanical ◽  
Angiosperm Phylogeny

The "Angiosperm Phylogeny Poster – Flowering Plant Systematics" is an educational tool presenting an overview of the evolutionary relationships among flowering plants according to APG IV and APweb as of 2016. The phylogenetic tree depicts the 64 orders and the majority of the 416 families, listing the main apomorphies and plesiomorphies as well as diagnostic and nondiagnostic anatomical, morphological, and phytochemical features for orders and higher levels within the tree. The intuitive color-coding facilitates memorization and teaching. Translations of the poster by internationally renown botanists are now available in 18 languages. Hyperlinks to APweb (Peter F. Stevens, Missouri Botanical Garden) are provided for the orders and higher ranks. This is one in a series of three educational posters on the phylogeny of land plants: Poster 1: "Angiosperms", Poster 2: "Tracheophytes: Lycophytes, Ferns, Gymnosperms", Poster 3: "Bryophytes: Liverworts, Mosses, Hornworts".

scholarly journals Microbial-type terpene synthase genes occur widely in nonseed land plants, but not in seed plants

2016 ◽  
Vol 113 (43) ◽  
pp. 12328-12333 ◽  
Author(s):  
Qidong Jia ◽  
Guanglin Li ◽  
Tobias G. Köllner ◽  
Jianyu Fu ◽  
Xinlu Chen ◽  
...  
Keyword(s):  
Flowering Plants ◽  
Terpene Synthase ◽  
Seed Plants ◽  
Terpene Synthases ◽  
The Third ◽  
Wide Range ◽  
Prenyl Diphosphate ◽  
Bacteria And Fungi ◽  
Selaginella Moellendorffii ◽  
Catalytic Functions

The vast abundance of terpene natural products in nature is due to enzymes known as terpene synthases (TPSs) that convert acyclic prenyl diphosphate precursors into a multitude of cyclic and acyclic carbon skeletons. Yet the evolution of TPSs is not well understood at higher levels of classification. Microbial TPSs from bacteria and fungi are only distantly related to typical plant TPSs, whereas genes similar to microbial TPS genes have been recently identified in the lycophyte Selaginella moellendorffii. The goal of this study was to investigate the distribution, evolution, and biochemical functions of microbial terpene synthase-like (MTPSL) genes in other plants. By analyzing the transcriptomes of 1,103 plant species ranging from green algae to flowering plants, putative MTPSL genes were identified predominantly from nonseed plants, including liverworts, mosses, hornworts, lycophytes, and monilophytes. Directed searching for MTPSL genes in the sequenced genomes of a wide range of seed plants confirmed their general absence in this group. Among themselves, MTPSL proteins from nonseed plants form four major groups, with two of these more closely related to bacterial TPSs and the other two to fungal TPSs. Two of the four groups contain a canonical aspartate-rich “DDxxD” motif. The third group has a “DDxxxD” motif, and the fourth group has only the first two “DD” conserved in this motif. Upon heterologous expression, representative members from each of the four groups displayed diverse catalytic functions as monoterpene and sesquiterpene synthases, suggesting these are important for terpene formation in nonseed plants.

Rate of rbc L gene sequence evolution and species diversification in flowering plants (angiosperms)

1996 ◽  
Vol 263 (1370) ◽  
pp. 589-591 ◽  
Keyword(s):  
Molecular Evolution ◽  
Significant Positive Correlation ◽  
Gene Sequence ◽  
Flowering Plants ◽  
Sequence Evolution ◽  
Chloroplast Gene ◽  
Species Diversification ◽  
Rate Of Evolution ◽  
Number Of Species ◽  
Rbc L

In sister taxa comparisons, there is a significant, positive correlation between the rate of evolution of the rbc L chloroplast gene within families of flowering plants (angiosperms), and the number of species in those families. We briefly discuss alternative evolutionary scenarios which may have generated this relation between species diversification and molecular evolution in flowering plants.

scholarly journals Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens

2019 ◽  
Author(s):  
Eleanor F. Vesty ◽  
Amy L. Whitbread ◽  
Sarah Needs ◽  
Wesal Tanko ◽  
Kirsty Jones ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Spore Germination ◽  
Growth And Development ◽  
Marine Algae ◽  
Physcomitrella Patens ◽  
Close Association ◽  
Flowering Plants ◽  
Land Plants ◽  
Gram Negative Bacteria ◽  
Gram Negative

ABSTRACTPlants live in close association with microorganisms that can have beneficial or detrimental effects. The activity of bacteria in association with flowering plants has been extensively analysed. Bacteria use quorum-sensing as a way of monitoring their population density and interacting with their environment. A key group of quorum sensing molecules in Gram-negative bacteria are the N-acylhomoserine lactones (AHLs), which are known to affect the growth and development of both flowering plants, including crops, and marine algae. Thus, AHLs have potentially important roles in agriculture and aquaculture. Nothing is known about the effects of AHLs on the earliest-diverging land plants, thus the evolution of AHL-mediated bacterial-plant- and algal interactions is unknown. In this paper, we show that AHLs can affect spore germination in a representative of the earliest plants on land, the Bryophyte moss Physcomitrella patens. Furthermore, we demonstrate that sporophytes of wild isolates of Physcomitrella patens are associated with AHL-producing bacteria.

Sign in / Sign up

Export Citation Format

Share Document