By Christophe Clement, Ettore Pacini, Jean-Claude Audran
Pollen, the plant constitution most generally utilized by people, is a key constitution in plant copy giving upward push to end result and seeds. additionally, the biotechnological use of pollen is of serious significance for plant breeders because it permits to acquire kinds with higher usage and yield. within the first half, the successive steps of pollen improvement within the anther from floral induction to pollen germination and fertilization are completely tested; the second one half is dedicated to pollen behaviour in vitro.
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Additional resources for Anther and Pollen: From Biology to Biotechnology
Since in the male ovaries tanniniferous cells are abundant (Fig. 3F and Schmid 1978) the increase in the TCA- insoluble conjugated polyamines in these ovaries might be correlated with tannin deposition. In fact, it is known that hydroxycinnamic acids have a central role as precursors in phenolic metabolism (Harbome 1980). However, it can not be ruled out that at least in the tanniniferous cells modification in the cell walls, undetectable at the light microscope, may also occur as reported for Diospyros kaki L.
New Zeal J Bot 14: 63-68 Polyamines as markers in sexual reproduction of Kiwifruit 43 Ishii T (1997) Structure and functions offeruloylated polysaccharides. Plant Sci 127: 111127 Jensen WA (1962) Botanical histochemistry. Principles and Practice. Freeman and Co, San Francisco Malmberg RL, McIndoo J (1983) Abnormal floral development of a tobacco mutant with elevated polyamine levels. Nature 305: 623-625 Markwalder HV, Neukom H (1976) Diferulic acid as a possible crosslink in hemicelluloses from wheat germ.
When considered together, these results show that CCLS4 expression is tightly restricted to the 3rd whorl. We find the same signal in the epidermis of the third whorl of an asexua mutant (Fig. SF). Our results suggest that CCLS4 may fulfil different functions during pre- and postmeiotic anther development and reveal the complex role parietal cells may play in cellular signalling during early stamen formation. To verify the specificity of the CCLS4, we performed hybridisation with flower buds from other species in the genus Silene.
Anther and Pollen: From Biology to Biotechnology by Christophe Clement, Ettore Pacini, Jean-Claude Audran