Результаты исследований: Научные публикации в периодических изданиях › статья
Photosynthetic activity as assessed via chlorophyll a fluorescence suggests a role of potassium channels in root to shoot signaling. / Войцеховская, Ольга Владимировна; Apollonov, V.I.; Murtuzova, A.V.; Черныш, Мария Александровна; Дроздова, Ирина Валерьевна; Беляева, Алла Игоревна; Ковалева, Ольга Николаевна; Лоскутов, Игорь Градиславович; Демидчик, Вадим Викторович; Тютерева, Елена Владимировна.
в: Photosynthetica, Том 58, № 2, 2020, стр. 608-621.Результаты исследований: Научные публикации в периодических изданиях › статья
}
TY - JOUR
T1 - Photosynthetic activity as assessed via chlorophyll a fluorescence suggests a role of potassium channels in root to shoot signaling.
AU - Войцеховская, Ольга Владимировна
AU - Apollonov, V.I.
AU - Murtuzova, A.V.
AU - Черныш, Мария Александровна
AU - Дроздова, Ирина Валерьевна
AU - Беляева, Алла Игоревна
AU - Ковалева, Ольга Николаевна
AU - Лоскутов, Игорь Градиславович
AU - Демидчик, Вадим Викторович
AU - Тютерева, Елена Владимировна
PY - 2020
Y1 - 2020
N2 - Potassium is indispensable for plant growth. Recently, a role of K+ channels has emerged in sensing and transducing stress and nutrient status. Tetraethylammonium (TEA+) is a specific blocker of K+ transport and affects K+ channel gene expression. Two barley varieties with contrasting salinity tolerance, and a chlorophyll b-less mutant, were grown either in the presence of TEA+ alone or combined with NaCl, at two different concentrations of external K+ and Ca2+, and were analyzed nine days after germination. Chlorophyll a transients monitored via JIP-tests were used to evaluate the state of the photosynthetic machinery. In contrast to reported responses to K+ deficiency, TEA+ inhibited shoot growth while inducing root growth and increasing photosynthetic performance. Both TEA+ and NaCl induced the appearance of negative K-bands in OJIP kinetics and an increase in PIABS, indicating a stimulation of photosynthesis by increased sink strength in the context of root to shoot signaling.
AB - Potassium is indispensable for plant growth. Recently, a role of K+ channels has emerged in sensing and transducing stress and nutrient status. Tetraethylammonium (TEA+) is a specific blocker of K+ transport and affects K+ channel gene expression. Two barley varieties with contrasting salinity tolerance, and a chlorophyll b-less mutant, were grown either in the presence of TEA+ alone or combined with NaCl, at two different concentrations of external K+ and Ca2+, and were analyzed nine days after germination. Chlorophyll a transients monitored via JIP-tests were used to evaluate the state of the photosynthetic machinery. In contrast to reported responses to K+ deficiency, TEA+ inhibited shoot growth while inducing root growth and increasing photosynthetic performance. Both TEA+ and NaCl induced the appearance of negative K-bands in OJIP kinetics and an increase in PIABS, indicating a stimulation of photosynthesis by increased sink strength in the context of root to shoot signaling.
KW - chlorina f2
KW - ion content
KW - quaternary ammonium salts
KW - salt stress
KW - chlorina f2
KW - ion content
KW - quaternary ammonium salts
KW - salt stress
M3 - Article
VL - 58
SP - 608
EP - 621
JO - Photosynthetica
JF - Photosynthetica
SN - 0300-3604
IS - 2
ER -
ID: 78588904