Plant mitochondrial genomes and recombination
WebAug 14, 2024 · Background Mitochondrial genomes of flowering plants (angiosperms) are highly dynamic in genome structure. The mitogenome of the earliest angiosperm Amborella is remarkable in carrying rampant foreign DNAs, in contrast to Liriodendron, the other only known early angiosperm mitogenome that is described as ‘fossilized’. The distinctive … WebMay 23, 2024 · Plant cytoplasmic genomes, such as plastid (plastomes) and mitochondrial (mitogenomes) genomes, are maternally inherited and are usually present in high copy …
Plant mitochondrial genomes and recombination
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Webform of mitochondrial DNA, despite evidence to the contrary. Many plant mitochondrial genomes have one or more pairs of large repeats that can act as sites for inter- or intramolecular recombination, leading to multiple alternative genomic arrangements (isoforms). Most mitochondrial genomes have been assembled using methods that
WebApr 20, 2024 · In plants, replicating the mitochondrial genome is probably a very minor expenditure of energy compared to the other costly activities of the cell, including replicating the much larger nuclear genome, transcription, protein synthesis and active transport. This chapter discusses the angiosperm mitochondrial genomes. Intermediate (ca. 50 to 500-bp) repeated sequences have been identified that mediate very low frequency, asymmetric DNA exchange. This rare recombination activity is associated with the emergence of novel DNA polymorphisms, intraspecific genomic variation, and the process of SSS. This SSS genomic … See more Large (>1,000-bp) repeated sequences appear to mediate high frequency, reciprocal DNA exchange that can result in subdivision of the genome to a multipartite … See more Small (4–25 bp) repeated sequences also participate in plant mitochondrial genomic changes. However, it appears more likely that these repeats participate … See more
WebJan 27, 2024 · Introduction. Since the acquisition of mitochondria by eukaryotes, the mitochondrial genome has lost most of its genes and now contains only a few dozen genes encoding respiratory chain complexes and ribosome-related genes required for their expression (Unseld et al., 1997; Duchêne and Maréchal-Drouard, 2001).In angiosperms, … WebJun 22, 2024 · On comparing fungi and animal mitochondrial genomes, plant mitochondrial genomes are usually observed to be over 1,000 times larger and are structurally more complex because of the vast amount of foreign DNA migration and frequent ongoing recombination of repeated sequences (Knoop et al., 2011; Alverson et al., 2010; Alverson …
WebApr 3, 2024 · Plant mitochondrial genomes (mitogenomes) exhibit fluid genome architectures, which could lead to the rapid erosion of genome synteny over a short evolutionary time scale. ... It is suggested that repeat-mediated homologous recombination enables the dynamic structure of mitochondrial genomes in Orchidaceae. Expand. 1. PDF. …
WebIn this study, the gene content, genome size, genome comparison, mitochondrial plastid sequences, dN/dS analysis of mitochondrial protein-coding genes, and RNA-editing events in A. argyi mitogenome were determined, providing insights into the phylogenetic relationships of Asteraceae plant. thermomix electric cookerWebMay 25, 2024 · Plant mitochondrial genomes vary widely in size. Although many plant mitochondrial genomes have been sequenced and assembled, the vast majority are of angiosperms, and few are of gymnosperms. Most plant mitochondrial genomes are smaller than a megabase, with a few notable exceptions. toy stores in salmon armWebJun 10, 2024 · However, only 441 plant mitochondrial genomes exist, according to the NCBI database (2024, April 23th, https: ... which can mediate homologous recombination, and the mitochondrial genome of sweet potato could form a polycyclic structure under the influence of these repeats. Further studies may be conducted in the future to determine whether ... thermomix eldomWebJul 1, 2005 · Plant mitochondrial genomes are distinguished from those of animals and fungi by undergoing frequent inter- and intramolecular recombination in areas of repeated … thermomix email adresseWebApr 15, 2024 · The mitochondrial genomes of flowering plants are well known for their large size, variable coding-gene set and fluid genome structure. The available mitochondrial … thermomix eloomiWebNov 1, 2011 · Plant Mitochondrial Genomes and Recombination Authors: Maria Arrieta-Montiel Sally A Mackenzie Pennsylvania State University Abstract The mitochondrial … toy stores in rosevilleWebInheritance and recombination of mitochondrial genomes in plants, fungi and animals. It is generally assumed that mitochondrial genomes are uniparentally transmitted, … toy stores in rome italy