Sterol Profile in Leaves of Spring Oats (<i>Avena sativa</i> L.) Under Conditions of the Cryolithozone
Plant sterols (STs) are essential for the regulation of fluidity and permeability of cell membranes, which have a wide structural diversity. The dynamics of changes in sterol molecular species in leaves of a valuable cereal crop, spring oat (<i>Avena sativa</i> L.), as a function of diff...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | International Journal of Plant Biology |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2037-0164/15/4/90 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Plant sterols (STs) are essential for the regulation of fluidity and permeability of cell membranes, which have a wide structural diversity. The dynamics of changes in sterol molecular species in leaves of a valuable cereal crop, spring oat (<i>Avena sativa</i> L.), as a function of different sowing dates were studied. In particular, 11 molecular species of sterols (STs) and triterpenoids in <i>A. sativa</i> leaves were identified by GC-MS. Triterpenoids Ψ-taraxasterol, cyclolaudenol, and betulin were identified in <i>A. sativa</i> leaves for the first time, which may be related to adaptation to extreme climatic conditions of the cryolithozone. The dynamics of STs and triterpenoids changes were revealed during growth and development of the standard term and late summer sowing term during <i>A. sativa</i> hardening to low ambient temperatures. The ratio of β-sitosterol to campesterol was found to increase in response to low positive air temperatures, while the ratio of stigmasterol to β-sitosterol remained constant from mid-September to the end of October. Overall, leaves of standard-seeded <i>A. sativa</i> plants maintained higher levels of absolute STs and triterpenoids by 1.9-fold than leaves of late-seeded <i>A. sativa</i> plants. It is suggested that the ability of <i>A. sativa</i> plants to synthesize β-sitosterol and stigmasterol may be part of an evolutionary adaptation process to cope with wide temperature fluctuations and to maintain important membrane-bound metabolic processes. |
|---|---|
| ISSN: | 2037-0164 |