Results 11 to 20 of about 861,247 (242)
Targeted DNA insertion in plants [PDF]
Proceedings of the National Academy of Sciences, 2021 Conventional methods of DNA sequence insertion into plants, usingAgrobacterium-mediated transformation or microprojectile bombardment, result in the integration of the DNA at random sites in the genome. These plants may exhibit altered agronomic traits as a consequence of disruption or silencing of genes that serve a critical function.
Oliver Xiaoou Dong, Pamela C. Ronald
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Journal of Global Innovations in Agriculture Sciences, 2021 Common DNA methylation controls gene expression and preserves genomic integrity. Mal methylation can cause developmental abnormalities in the plants. Multiple enzymes carrying out de novo methylation, methylation maintenance, and active demethylation culminate in a particular DNA methylation state.
Ahmad Zada, Adil Altaf
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Plant Organelle DNA Maintenance [PDF]
Plants, 2020 Plant cells contain two double membrane bound organelles, plastids and mitochondria, that contain their own genomes. There is a very large variation in the sizes of mitochondrial genomes in higher plants, while the plastid genome remains relatively uniform across different species. One of the curious features of the organelle DNA is that it exists in a
Niaz Ahmad, Brent L. Nielsen
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Active DNA Demethylation in Plants [PDF]
International Journal of Molecular Sciences, 2019 Methylation of cytosine (5-meC) is a critical epigenetic modification in many eukaryotes, and genomic DNA methylation landscapes are dynamically regulated by opposed methylation and demethylation processes. Plants are unique in possessing a mechanism for active DNA demethylation involving DNA glycosylases that excise 5-meC and initiate its replacement ...
Jara Teresa Parrilla-Doblas +6 more
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Ribosomal DNA heterochromatin in plants [PDF]
Cytogenetic and Genome Research, 2005 The aim of this review is to integrate earlier results and recent findings to present the current state-of-the-art vision concerning the dynamic behavior of the ribosomal DNA (rDNA) fraction in plants. The global organization and behavioral features of rDNA make it a most useful system to analyse the relationship between chromatin topology and gene ...
Neves, N. +5 more
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Plant DNA Repair and Agrobacterium T−DNA Integration [PDF]
International Journal of Molecular Sciences, 2021 Agrobacterium species transfer DNA (T−DNA) to plant cells where it may integrate into plant chromosomes. The process of integration is thought to involve invasion and ligation of T-DNA, or its copying, into nicks or breaks in the host genome. Integrated T−DNA often contains, at its junctions with plant DNA, deletions of T−DNA or plant DNA, filler DNA ...
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DNA Methylation Readers in Plants
Journal of Molecular Biology, 2020 In plants, DNA methylation occurs in distinct sequence contexts, including CG, CHG, and CHH. Thus, plants have developed a surprisingly diverse set of DNA methylation readers to cope with an extended repertoire of methylated sites. The Arabidopsis genome contains twelve Methyl-Binding Domain proteins (MBD), and nine SET and RING finger-associated (SRA)
Grimanelli, Daniel, Ingouff, Mathieu
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Regulating DNA Replication in Plants [PDF]
Cold Spring Harbor Perspectives in Biology, 2012 Chromosomal DNA replication in plants has requirements and constraints similar to those in other eukaryotes. However, some aspects are plant-specific. Studies of DNA replication control in plants, which have unique developmental strategies, can offer unparalleled opportunities of comparing regulatory processes with yeast and, particularly, metazoa to ...
Sánchez, María de la Paz +3 more
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DNA- and DNA-Protein-Crosslink Repair in Plants [PDF]
International Journal of Molecular Sciences, 2019 DNA-crosslinks are one of the most severe types of DNA lesions. Crosslinks (CLs) can be subdivided into DNA-intrastrand CLs, DNA-interstrand CLs (ICLs) and DNA-protein crosslinks (DPCs), and arise by various exogenous and endogenous sources. If left unrepaired before the cell enters S-phase, ICLs and DPCs pose a major threat to genomic integrity by ...
Janina Enderle +2 more
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Frontiers in Bioscience, 2017 Plants possess mitochondrial genomes that are large and complex compared to animals. Nearly all animal mitochondrial genomes are about 16.5. kbp in length, whereas plant mitochondrial genomes range between 200-2,000 kbp. This is curious if we assume modern mitochondria originated from a common alpha-proteobacterial ancestor.
Stewart A. Morley, Brent L. Nielsen
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