3.6 CsHSP24.6 Enhances Plant Salt Tolerance
To explore whether CsHSP24.6 and CspTAC5 have other common
functions, A. thaliana seedlings were grown on media supplemented
with NaCl. After germination on media containing no NaCl, 5-day-oldA. thaliana transgenic seedlings of identical sizes were
transferred to an MS media supplemented with 100 mM NaCl.
The data from the CsHSP24.6 -overexpressing plants treated with
NaCl are displayed in Figure 7A . Compared with controls, the
main roots and lateral roots of the 35S::CsHSP24.6 transgenic
seedlings were substantially longer. The leaves of the35S::CsHSP24.6 transgenic seedlings were also significantly
larger than those of the control plants, although no difference was
observed between the transgenic seedlings and the control under normal
growth conditions.
No significant difference was observed between 35S::CspTAC5transgenic plants and control plants (Figure 7B ). Therefore,
resistance to NaCl stress is a unique function of CsHSP24.6 and
is not enhanced by CspTAC5 .