Plasma Membrane H+-ATPase during Embryo Dormancy and Dormancy Release in Horse Chestnut Seeds

Obroucheva Nv, Lityagina Sv and Sinkevich Ia
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Sinkevich Ia: Institute of plant physiology of Russian Academy of Sciences, Russia

International Journal of Cell Science & Molecular Biology, 2018, vol. 4, issue 3, 55-58

Abstract: Horse chestnut seeds harvested in October were exposed to wet cold stratification for 14 weeks, thus providing a way for seeds to overcome the state of deep physiological dormancy and acquire the ability to germinate. During first 5-6 weeks, a small portion of seeds germinated hardly and slowly while later on seeds germinated more uniformly and rapidly. The experiments with facilitated water supply have shown that 5-6 weeks is the state of embryo dormancy, which did not depend on water inflow, whereas during 6-14 weeks these embryos became capable to germinate, but this capacity was limited by water penetration through seed coat. Two distinct periods were identified in deep dormancy, namely embryo dormancy and coat-imposed dormancy (dormancy release). They differ in plasma membrane H+-ATPase behavior. During embryo dormancy, the the transformation occurred from autoinhibited form preformed during seed maturation to an active form, whereas during dormancy release the activity of enzyme increased up to the levels typical for germinating seeds.

Keywords: juniper publishers; Journal of Cell Science; Molecular Biology; International Journal of Cell Science; International Journal of Cell Science & Molecular Biology; molecular biology journals list; molecular biology impact factor; molecular biology scholarly journal; molecular biology online journals; molecular biology research papers; scientific journals; juniper publishers review (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijcsmb:v:4:y:2018:i:3:p:55-58

DOI: 10.19080/IJCSMB.2018.03.555639

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