Readability indicators of water regime and content of nucleic acids in leaves of plant genus Aesculus L. action by horse-chestnut miner moth

Authors

  • O. S. Penteliuk National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • I. P. Grigoryuk National University of Life and Environmental Sciences of Ukraine image/svg+xml

DOI:

https://doi.org/10.31548/bio2016.05.001

Abstract

Mechanisms of plant resistance to stressful environmental factors are the result of complex changes in the metabolic processes functionating at various levels of their organization. The intensity and trend of growth and development of plants depends on the parameters of the water regime and the content of nucleic acids (NA). It is established that the number of deoxyribonucleic and ribonucleic acids (DNA, RNA) varies depending on the individual development of plants. The aim of work was to determine the parameters of daily water deficiency (WD), the number and ratio of RNA to DNA, as components of biosynthetic processes intensity and stability of plant genus Aesculus L. against horse-chestnut miner moth (HCMM) (Cameraria ochridella Deschka et Dimič). The objects of research is served optimally developed and coeval leaves of the lower, middle and upper tiers of plant species genus Aesculus L. 20-30-years of age, who are growing in the green zone of Kiev’s megapolis were selected during the massive damage to plants HCMM. The close correlation was shown between indicators of water regime, RNA and DNA content and degree of stability of plant genus Aesculus L. against HCMM in organismal level. If the biochemical ratio of RNA to DNA in the leaves in the fruit phase is 1,10-1,40, the species of the genus Aesculus L. characterized by low intensity biosynthetic processes and resistance to HCMM, 4,29-4,56 - secondary and 8,89-10,0 - high. The ratio of RNA to DNA was recommended as diagnostic marker or as indication of biological stability of species to genus Aesculus L. HCMM.

References

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Published

2017-05-11

Issue

Section

Biology