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Elements and Compounds01:27

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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
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The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
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ConTEdb: a comprehensive database of transposable elements in conifers.

Fei Yi1,2, Juanjuan Ling1, Yao Xiao1

  • 1State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.

Database : the Journal of Biological Databases and Curation
|December 22, 2018
PubMed
Summary

Researchers identified over 413,000 transposable elements (TEs) in conifer genomes, creating a database (ConTEdb) to aid functional genomics research.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Plant Science

Background:

  • Conifers are ecologically and economically vital gymnosperms with large, complex genomes.
  • Genome sequencing and analysis in conifers are challenging due to their size and complexity.
  • Transposable elements (TEs) are significant components of eukaryotic genomes, influencing genome evolution.

Purpose of the Study:

  • To identify and classify transposable elements (TEs) in key conifer species.
  • To develop a comprehensive, user-friendly database (ConTEdb) for conifer TE data.
  • To provide integrated analysis tools for efficient mining of conifer TE information.

Main Methods:

  • Utilized a combination of multiple approaches for transposable element identification.
  • Classified identified TEs into distinct families.
  • Developed a web-based database (ConTEdb) with browsing, retrieval, and download functionalities.

Main Results:

  • Identified 413,423 transposable elements (TEs) across Picea abies, Picea glauca, and Pinus taeda.
  • Classified these TEs into 11,133 families.
  • Established ConTEdb, a comprehensive resource for conifer TE sequences and analysis tools.

Conclusions:

  • ConTEdb serves as a valuable platform for studying transposable element biology in conifers.
  • The database facilitates functional genomics research by providing accessible TE data and analysis tools.
  • This resource will aid researchers in understanding conifer genome evolution and function.