"This book volume is essential for both the readers familiar with the field and for newcomers in plant genetics, epigenetics or evolutionary biology related to the bright side of plant Retro transposons. The present book gives an overview and role of ubiquitous retrotransposon mobile genetic elements. Retro transposons and their kind frame the bulk of genomic DNA. Heterogeneous populations of Retrotransposons contain over 76% of nuclear DNA content in Hordeum vulgare and over 75% of maize genome. Retrotransposons belong to Class 1 family and transpose by the "copy and paste" transposition mechanism. TEs were discovered by Barbara McClintock in Zea mays in the middle of 20th century, for which she was later on awarded the Nobel Prize in Physiology or Medicine in 1983"-- Provided by publisher.