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Aquatic Plants Native to Asia and Australia
Published in Namrita Lall, Aquatic Plants, 2020
Marco Nuno De Canha, Danielle Twilley, B. Venugopal Reddy, SubbaRao V. Madhunapantula, N. P. Deepika, T. N. Shilpa, B. Duraiswamy, S. P. Dhanabal, Suresh M. Kumar, Namrita Lall
Wolffia arrhiza (L.) Horkel ex Wimm belongs to the Araceae family, a family popular in water-loving species. It is known as the smallest vascular plant in existence (Figure 3.33a and b). The plant contains no roots, with the green part of the plant (the frond) being described as a sphere growing up to 1 mm in diameter, floating on the water surface. The flowers are minute with one stamen and one pistil. This species multiplies through vegetative reproduction with the round part of the frond budding to become an entirely new individual (Pan and Chen 1979).
Anredera cordifolia (Ten.) v. Steenis
Published in Dilip Ghosh, Pulok K. Mukherjee, Natural Medicines, 2019
Elin Yulinah Sukandar, Dhyan Kusuma Ayuningtyas
Anredera cordifolia is considered a major problem in some areas. In Australia and African forests, these plants are strictly regulated because they are invasive and can harm native plants in those countries (Boyne et al. 2013). The plants are difficult to control because of their rapid growth and easy vegetative reproduction via tuber (Eriksson 2007). This problem may be a blessing in disguise for the use of Anredera cordifolia as an herbal medicine, particularly in developing countries. Anredera cordifolia may act as a cheap and easy to produce alternative medicine because it grows in various climates, is easy to cultivate, and grows rapidly, showing favourable features for an alternative medicine.
Photomodulation of Protonema Development
Published in R. N. Chopra, Satish C. Bhatla, Bryophyte Development: Physiology and Biochemistry, 2019
Although valuable information can still be obtained by in vivo observations or by using simple equipment, it will be impossible, even with these not highly differentiated gameto-phytes, to elucidate the molecular mechanism of light-regulated morphogenesis. Bryophytes have much to offer as experimental systems for such investigations. They resemble land plants and green algae in important features of their metabolism, but they form the only group of land plants in which a gametophyte is dominant. The gametophyte shows very good vegetative reproduction, but a perpetuating genotype. Mosses are very conservative organisms. The genetic stability, which is also expressed by tissues and cells in artificial culture, is an important feature for physiological, biochemical, and molecular biological studies. It allows consistent long-term culture of moss cells with high growth rates and good yields. The simple filamentous structure and the tip growth facilitate experiments on polarity induction and structure-to-function correlation. It is likely to be particularly advantageous to select morphogenetically altered mutants from moss spores for physiological and genetic characterization.
Combined action of gamma radiation and exposure to copper ions on Lemna minor L
Published in International Journal of Radiation Biology, 2022
Irina S. Bodnar, Evgenia V. Cheban
Lemna minor consists of an individual ‘leaf-like’ structure (frond) and a single root. The frond comprises a meristematic tissue, by means of which vegetative reproduction is carried out. On each side of the proximal part of the frond, there are two pockets, in which vegetative buds are formed, giving rise to daughter plants. Most often, this plant reproduces vegetatively, which makes it possible to use a genetically homogeneous population throughout the experiment (Landolt 1980). Plants are connected via a hyaline thread, a thin outgrowth of the membrane, in colonies of 2–5 fronds.