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

Qia, Wang; Sun, Hang; Huang, Jinling

doi:10.5586/asbp.2014.043

Cited by 6 publications

(3 citation statements)

References 65 publications

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“…Recent genome analyses also detected horizontally acquired genes in all major lineages of multicellular eukaryotes, including plants, fungi and animals 18 19 20 21 , suggesting that HGT was also critical for adaptive evolution throughout eukaryotic evolution. In green plants, many horizontally acquired genes were also found to be of adaptive and evolutionary importance 22 . Because intimate physical association may facilitate HGT, parasitic plants have been used to detect HGT 23 24 .…”

Section: Discussionmentioning

confidence: 99%

Origin of the plant Tm-1-like gene via two independent horizontal transfer events and one gene fusion event

Yang

Liu

Fang

et al. 2016

Sci Rep

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The Tomato mosaic virus (ToMV) resistance gene Tm-1 encodes a direct inhibitor of ToMV RNA replication to protect tomato from infection. The plant Tm-1-like (Tm-1L) protein is predicted to contain an uncharacterized N-terminal UPF0261 domain and a C-terminal TIM-barrel signal transduction (TBST) domain. Homologous searches revealed that proteins containing both of these two domains are mainly present in charophyte green algae and land plants but absent from glaucophytes, red algae and chlorophyte green algae. Although Tm-1 homologs are widely present in bacteria, archaea and fungi, UPF0261- and TBST-domain-containing proteins are generally encoded by different genes in these linages. A co-evolution analysis also suggested a putative interaction between UPF0261- and TBST-domain-containing proteins. Phylogenetic analyses based on homologs of these two domains revealed that plants have acquired UPF0261- and TBST-domain-encoding genes through two independent horizontal gene transfer (HGT) events before the origin of land plants from charophytes. Subsequently, gene fusion occurred between these two horizontally acquired genes and resulted in the origin of the Tm-1L gene in streptophytes. Our results demonstrate a novel evolutionary mechanism through which the recipient organism may acquire genes with functional interaction through two different HGT events and further fuse them into one functional gene.

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Section: Discussionmentioning

confidence: 99%

Origin of the plant Tm-1-like gene via two independent horizontal transfer events and one gene fusion event

Yang

Liu

Fang

et al. 2016

Sci Rep

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“…Naturally produced recombinant DNA can result from: meiotic recombination; the action of diverse and often abundant mobile genetic elements; gene duplication; chromosomal inversions and translocations; novel gene assemblies; shuffling of exons and other gene fragments; chromosomal duplication; horizontal gene transfer; and incorporation of viral genes. In fact, all land plants appear to be "natural GMOs," as all contain genes apparently acquired horizontally [178][179][180][181][182][183][184][185][186][187][188][189][190][191][192][193][194]. To my knowledge, there is no published, validated research showing any fundamental biochemical or biophysical difference between DNA recombined in a test tube vs. that recombined in a living cell.…”

Section: Consumption Of Ge Cropsmentioning

confidence: 98%

Genetic Engineering and Sustainable Crop Disease Management: Opportunities for Case-by-Case Decision-Making

Vincelli

2016

Sustainability

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Genetic engineering (GE) offers an expanding array of strategies for enhancing disease resistance of crop plants in sustainable ways, including the potential for reduced pesticide usage. Certain GE applications involve transgenesis, in some cases creating a metabolic pathway novel to the GE crop. In other cases, only cisgenessis is employed. In yet other cases, engineered genetic changes can be so minimal as to be indistinguishable from natural mutations. Thus, GE crops vary substantially and should be evaluated for risks, benefits, and social considerations on a case-by-case basis. Deployment of GE traits should be with an eye towards long-term sustainability; several options are discussed. Selected risks and concerns of GE are also considered, along with genome editing, a technology that greatly expands the capacity of molecular biologists to make more precise and targeted genetic edits. While GE is merely a suite of tools to supplement other breeding techniques, if wisely used, certain GE tools and applications can contribute to sustainability goals.

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“…From this perspective, Banasiak [13] describes evolution of the main components of the cell wall in land plant cells. In turn, Wang et al [14] review the examples of the impact of horizontal gene transfer on land plant evolution, which include among others, the synthesis of flavonoids and lignins, the origin of vascular tissues, and the evolution of C 4 photosynthesis in Poaceae.…”

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confidence: 99%