Changes in the content of D-chiro-inositol and its α-D-galactosyl derivatives during vegetation and desiccation of common buckwheat (Fagopyrum esculentum Moench)
Lesław Bernard Lahuta
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Polandhttps://orcid.org/0000-0001-5999-1871
Joanna Szablińska-Piernik
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Polandhttps://orcid.org/0000-0003-0265-940X
Ryszard J. Górecki
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Polandhttps://orcid.org/0000-0002-6751-3340
Joanna Mitrus
2Faculty of Exact and Natural Sciences, Institute of Biological Sciences, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110, Siedlce, Polandhttps://orcid.org/0000-0001-8000-5167
Marcin Horbowicz
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Polandhttps://orcid.org/0000-0002-1789-4034
Abstract
Common buckwheat (Fagopyrum esculentum Moench) is the only crop that contains D-chiro-inositol (DCI) in significant contents in vegetative tissues and its α-D-galactosyl derivatives in seeds. Besides DCI, buckwheat tissues contain small contents of D-pinitol (PIN) and myo-inositol (MIN) and their α-D-galactosyl derivatives. D-chiro-inositol is a health-promoting cyclitol of increasing importance in the treatment of some human diseases. However, changes in DCI content in stems, leaves and maturing buckwheat seeds during plant vegetation and under desiccation were not known. The present study analyzed the concentration of cyclitols and their galactosides in the stems, leaves and seeds of plants harvested on 79th, 94th and 123th days after sowing (DAS) and after desiccation at ambient temperature (23° ±2°C). D-chiro-inositol content in stems and leaves increased with vegetation, while the opposite trend was found in developing and maturing seeds. In the seeds, the accumulation of mono-galactosyl DCI derivatives increased, but at the same time, the content of mono-galactosyl PIN and MIN derivatives decreased. The desiccation process drastically increased the content of di-galactosyl derivatives of DCI and MIN in the seeds. The obtained results suggest a protective role of DCI and MIN di-galactosides against desiccation stress in buckwheat tissues.
Keywords:
common buckwheat, D-chiro-inositol, myo-inositol, cyclitol galactosides, vegetation, desiccationReferences
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Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Poland https://orcid.org/0000-0001-5999-1871
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Poland https://orcid.org/0000-0003-0265-940X
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Poland https://orcid.org/0000-0002-6751-3340
2Faculty of Exact and Natural Sciences, Institute of Biological Sciences, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110, Siedlce, Poland https://orcid.org/0000-0001-8000-5167
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1a, 10-719 Olsztyn, Poland https://orcid.org/0000-0002-1789-4034
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