• To study the regulation of plant meristem activity and cell proliferation, we have examined the tissue-specific accumulation of cdc2 transcripts in Arabidopsis thaliana and the related crucifer radish (Raphanus sativus) by in situ hybridization using A. thaliana cdc2 cDNA sequences as a probe. (pnas.org)
  • During flower development, high levels of expression were observed in meristems, in the basal regions of developing organs, in the developing vasculature, and associated with rib meristems elaborated late in the development of some floral organs. (pnas.org)
  • There was strong hybridization throughout the pericycle, and a further localized accumulation of cdc2 transcripts was observed in the initial stages of the activation of a new meristem at sites of lateral root development. (pnas.org)
  • 1955 ), and subsequent studies identified the cytokinin zeatin as an endogenous plant growth regulator ( Letham, 1973 ). (biologists.org)
  • Here I review the biogenesis and function of three major classes of endogenous small RNAs in plants: microRNAs, trans-acting siRNAs, and heterochromatic siRNAs, with an emphasis on the roles of these small RNAs in developmental regulation. (nih.gov)
  • From that point, it begins to divide to form a plant embryo through the process of embryogenesis. (wikipedia.org)
  • In seed plants, the embryo will develop one or more "seed leaves" (cotyledons). (wikipedia.org)
  • A foot is then formed, as in Lycopodium , and further development of the embryo continues at the expense of reserves transferred to the megaspore from the preceding sporophyte generation. (britannica.com)
  • In contrast to animals, the basic body plan of plants develops largely postembryonically and is directed by two primary meristems located on opposite ends of a bipolar embryo ( Jürgens, 2001 ). (plantphysiol.org)
  • A study in Developmental Cell shows the importance of the interplay between local production and transport of the key hormone auxin to plant development. (eurekalert.org)
  • Plant roots rely on local production of a key hormone that controls many aspects of development and response to environmental changes, according to new research from North Carolina State University. (eurekalert.org)
  • The study sheds light on the importance of when and where the plant hormone auxin is produced and explores the interplay between auxin synthesis and transport that moves auxin throughout the plant. (eurekalert.org)
  • That is, roots will degenerate if auxin is not produced in the root, or flowers will be sterile if auxin is not made at the right place and the right time in the flower, despite the fact that the hormone can be transported throughout the plant. (eurekalert.org)
  • The researchers also examined the role of local auxin in flowers and leaves and again saw that the sites of the biosynthesis of this hormone are critical, in this case, for full fertility and normal leaf development. (eurekalert.org)
  • Hormone Action in Plant Development - A Critical Appraisal documents the proceedings of the Tenth Long Ashton Symposium, September 1986. (weltbild.de)
  • Novel findings have been made in plant hormone research using SPR as a technique. (omicsonline.org)
  • Applications of the currently available technologies and development of new technologies are crucial to understand the mechanisms of cell and tissue development, hormone interaction, functioning of signaling and metabolic cascades, mechanisms of cell wall formation and mechanisms of stress tolerance in plants. (omicsonline.org)
  • The next two sessions embraced contributions on the experimental manipulation of development by genetic (notably by biochemical mutants), chemical (for example, with gibberellin/biosynthesis inhibitors), and environmental (including drought stress) means. (weltbild.de)
  • He has used similar approaches to investigate the synthesis of bioactive compounds in two of the world's major medicinal plants. (wikipedia.org)
  • This has led to new understanding of how genome rearrangement has shaped the evolution of plant metabolism. (wikipedia.org)
  • Meristems may be classified according to their location in the plant and their special functions. (britannica.com)
  • Temperature has a multiplicity of effects on plants depending on a variety of factors, including the size and condition of the plant and the temperature and duration of exposure. (wikipedia.org)
  • Barrio RÁ, Hernández-Machado A, Varea C, Romero-Arias JR, Alvarez-Buylla E (2010) Flower development as an interplay between dynamical physical fields and genetic networks. (springer.com)
  • Characterisation and genetic mapping of traits responsible for production of artemisinin in Artemisia annua has enabled development of F1 hybrid seed that can deliver a robust source of this vital antimalarial medication for the developing countries. (wikipedia.org)
  • However, data regarding the role of cadaverine in stress response remains conflicted, as some plant systems show enhanced tolerance to stresses in its presence, while others show increased sensitivity to the same stresses. (frontiersin.org)
  • And the authors of a special issue Research Article on leaf epidermis topology reveal the extent of D'Arcy Thompson's influence in current plant development research. (biologists.org)
  • Specifically, the research shows that local auxin production is required to keep plants healthy. (eurekalert.org)
  • We knew how auxin was transported within the plant and how plants respond to auxin, but surprisingly we didn't know until recently how and where auxin is produced by the plant," said Javier Brumos, an NC State post-doctoral researcher and first author of a paper describing the research. (eurekalert.org)
  • Despite a multitude of studies in bacterial systems, cadaverine has garnered little attention in plant research. (frontiersin.org)
  • 2012 ). It was against this backdrop that scientists from five continents gathered in Edinburgh from 26 to 27 July 2012, for the fourth international Plant NO meeting, organized by Gary Loake. (wiley.com)
  • Until recently, plant scientists would study only a handful of these components at a time, and to make sense of their behavior, they would typically assume only a simple chain of cause and effect. (plantcell.org)
  • In the past, macroscopic observations on plants lead to basic understandings of how plants respond to their environments and grow. (wikipedia.org)
  • Over the past decade, our understanding of plant adaptation to environmental stress has grown considerably. (wiley.com)