Through a serial deletion analysis, we defined the AtMYB60 minimal promoter, sufficient to induce guard cell-specific activity (construct -262:: GUS, Figure 2).
Recently, an anion channel SLAC1 [28], [29], [30], [31], [31] was shown to be essential for stomatal closure in response to ozone, Ca2+ ions and H2O2 in Arabidopsis [31], suggesting that anion efflux could be induced in guard cells by O3 through an increase in anion channel activity.
In the present study, epidermal strip experiment was employed to investigate SO2-induced guard cells apoptosis and the signal regulation in Hemerocallis fulva.
Instead, my sister had this to anticipate: 24 hours after giving birth – in a scheduled, induced labor, with guards standing by and no family permitted – her newborn would be taken from her (pdf).
There are only 4 genes that are oppositely regulated by ABA in guard cells vs. leaves: AT5G20840, EXL3 (andG51550), and CIL (AT4G25990) are induced by ABA in guard cells but repressed by ABA in leaves, and KCS5 (AT1G25450) is induced by ABA in leaves but repressed by ABA in guard cells.
Combined with the fact that FC reduces cytosolic pH (Figure 5D) and H2O2 levels (Figure 2D) in guard cells induced by ABA, we conclude that FC induces H2O2 removal via reducing cytosol pH, hence lessens H2O2 levels in guard cells during ABA-induced stomatal closure.
These results provide evidence that, like CAT and DPI, FC surely decreases H2O2 levels induced by ABA in guard cells.
These results suggest that, the treatment of FC induces H2O2 removal, hence reduces the level of H2O2 induced by ABA in guard cells.
Upon an ABA induced rise in [Ca2+]cyt, guard cell SLAC may be activated by calcium dependent protein kinases CPK23 and CPK21 [ 67].
The "Japaneseness" may lie in the illusion of safety which induced the two women to let their guard down.
The mere memory of combat can keep PTSD victims constantly "on guard," inducing near-continuous mental and physical tension.
