RT Journal
T1 EXOGENOUS APPLICATION OF PROLINE ALLEVIATES SALT-INDUCED TOXICITY IN SAINFOIN SEEDLINGS
A1 G.-Q. Wu1
A1 R.-J. Feng
A1 S.-J.Li
A1 Y.-Y.Du
JF Journal of Animal and Plant Sciences
JO JAPS
SN 1018-7081
VO 27
IS 1
SP 246
OP 251
YR 2017
FD 2017/02/01
DO DOI N/A
AB <p>To clarify the roles of<a id="OLE_LINK47" name="OLE_LINK47"></a>&nbsp;exogenously applied proline in mitigating Na+ toxicity in sainfoin (<a id="OLE_LINK30" name="OLE_LINK30"></a><a id="OLE_LINK29" name="OLE_LINK29"></a><em>Onobrychisviciaefolia&nbsp;</em>Scop.), in this study, the changes of physiological and biochemical parameters were investigated in 15-day-old seedlings subjected with 0, 25 and 100 mmol/L NaCl with or without 2.5mmol/L proline for 7d. The results showed that both low salt (25mmol/L) and high salt (100mmol/L) significantly reduced fresh weight, dry weight, and water content (exception for low salt) in plants compared with the control. High salt also significantly increased concentration of malondialdehyde (MDA) and relative membrane permeability (RMP) in shoots. Our results showed that the addition of 2.5mmol/L proline remarkably mitigated Na+ toxicity in plants under both low- and high-salt stress. The mitigation of toxicity may be caused by regulating Na+/K+ ratio and increasing accumulation of proline. This study may provide physiological insights into understanding the mechanisms of salinity tolerance in plants treated with exogenous proline.</p>
K1 legume forages, cell membrane stability, ions homeostasis, salinity tolerance, K+ uptake
PB Pakistan Agricultural Scientists Forum
LK https://thejaps.org.pk/AbstractView.aspx?mid=2017-JAPS-30