RT Journal
T1 BASIL IONIC RESPONSES TO SEAWATER STRESS AND THE IDENTIFICATION OF GLAND SALT SECRETION
A1 J. F. Ninga
A1 L. H. Cuib
A1 S. H. Yanga
A1 S. Y. Aia
A1 M.J. Lia
A1 L. L. Suna
A1 Y. Chena
A1 R.H. Wanga
A1 Z. B. Zenga
JF Journal of Animal and Plant Sciences
JO JAPS
SN 1018-7081
VO 25
IS 1
SP 131
OP 138
YR 2015
FD 2015/02/01
DO DOI NA
AB <p>Basil (<em>Ocimum Basilicum</em>) seedlings were subjected to 0,5%,10%,20% and 40% seawater for 10 days under shade house conditions. Increasing seawater concentration led to considerable reduction in plant dry matter accumulation. However, root growth was not affected till treated with 40% seawater. Accumulations of Na+ and Cl- were correlated with decline of Ca2+ and K+ in stems, roots or both. Contents of Ca2+ and K+ in leaves increased or remained relatively unchanged with increasing salt levels. In salinity-stressed plants, Na+ were partitioned mainly in roots and more than 50% of the K+ and Ca2+ were stored in leaves. Higher K+/Na+ and Ca2+/Na+ ratios in leaves rather than in roots and stems were observed in Basil plants. Scanning electron microscopy coupled with X-ray microanalysis showed that Basil leaf gland secretions contained Na+ and Ca2+. The Na+ secretion increased while Ca2+ secretion decreased with the increasing seawater concentration. These results suggested that Basil salt tolerance is associated with the compartmentation of Na+ in roots and the balance of K+, Na+ and Ca2+ in leaves as well as the salt secretion by the leaf glands.</p>
K1 Ocimumbasilicum L.; Basil; Ion balance; Salt secretion; Seawater stress; X-ray microanalysis
PB Pakistan Agricultural Scientists Forum
LK https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-19