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Заглавие документа: Sodium Influx and Potassium Efflux Currents in Sunflower Root Cells Under High Salinity
Авторы: Hryvusevich, Palina
Navaselsky, Ilya
Talkachova, Yuliya
Straltsova, Darya
Keisham, Monika
Viatoshkin, Aliaksei
Samokhina, Veranika
Smolich, Igor
Sokolik, Anatoliy
Huang, Xin
Yu, Min
Bhatla, Satish Chander
Demidchik, Vadim
Тема: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Биология
Дата публикации: 2021
Издатель: Frontiers Media S.A.
Библиографическое описание источника: Front Plant Sci 2021;11.
Аннотация: Helianthus annuus L. is an important oilseed crop, which exhibits moderate salt tolerance and can be cultivated in areas affected by salinity. Using patch-clamp electrophysiology, we have characterized Na+ influx and K+ efflux conductances in protoplasts of salt-tolerant H. annuus L. hybrid KBSH-53 under high salinity. This work demonstrates that the plasma membrane of sunflower root cells has a classic set of ionic conductances dominated by K+ outwardly rectifying channels (KORs) and non-selective cation channels (NSCCs). KORs in sunflower show extreme Na+ sensitivity at high extracellular [Ca2+] that can potentially have a positive adaptive effect under salt stress (decreasing K+ loss). Na+ influx currents in sunflower roots demonstrate voltage-independent activation, lack time-dependent component, and are sensitive to Gd3+. Sunflower Na+-permeable NSCCs mediate a much weaker Na+ influx currents on the background of physiological levels of Ca2+ as compared to other species. This suggests that sunflower NSCCs have greater Ca2+ sensitivity. The responses of Na+ influx to Ca2+ correlates well with protection of sunflower growth by external Ca2+ in seedlings treated with NaCl. It can be, thus, hypothesized that NaCl tolerance in sunflower seedling roots is programmed at the ion channel level via their sensitivity to Ca2+ and Na+.
URI документа: https://elib.bsu.by/handle/123456789/289478
DOI документа: 10.3389/fpls.2020.613936
Scopus идентификатор документа: 85100570074
Финансовая поддержка: This study was supported by joint Belarus-India Project 018/53 of the State Committee of Science and Technology of Belarus (to VD and SB), International Academic Exchange Research Project (China-Belarus; to VD, MY, and SH), Guangdong Province Pearl River Fellowship (to VD), and the Russian Science Foundation grant#15-14-30008 (VD).
Лицензия: info:eu-repo/semantics/openAccess
Располагается в коллекциях:Статьи биологического факультета

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