Nitric oxide signalling via cytoskeleton in plants

Role and Interrelationship of Gα Protein, Hydrogen Peroxide, and Nitric Oxide in Ultraviolet B-Induced Stomatal Closure in Arabidopsis Leaves

“…Finally, although our study has well established that a linear intracellular signaling pathway including GPA1-dependent H 2 O 2 production and subsequent NO accumulation controls the low dose of UV-B-induced stomatal closure, the mechanism by which UV-Bdependent NO induces stomatal closure is still unclear. The structure and dynamics of cytoskeleton, the main cellular players in stomatal movement (Huang et al, 2009;Eisinger et al, 2012aEisinger et al, , 2012b) that can control ion channels in guard cells (Zhang et al, 2007), have been shown to be regulated by NO as well as H 2 O 2 (Huang et al, 2009;Wilkins et al, 2011;Yemets et al, 2011). Recent evidence also suggests that NO mediates UV-B signaling in plant cells by modulating cytoskeleton (Yemets et al, 2011;Krasylenko et al, 2012).…”

“…The structure and dynamics of cytoskeleton, the main cellular players in stomatal movement (Huang et al, 2009;Eisinger et al, 2012aEisinger et al, , 2012b) that can control ion channels in guard cells (Zhang et al, 2007), have been shown to be regulated by NO as well as H 2 O 2 (Huang et al, 2009;Wilkins et al, 2011;Yemets et al, 2011). Recent evidence also suggests that NO mediates UV-B signaling in plant cells by modulating cytoskeleton (Yemets et al, 2011;Krasylenko et al, 2012). Thus, whether the UV-B-dependent NO induces stomatal closure via modulating cytoskeleton and the subsequent activation of ion channels is an interesting question to be addressed in the future.…”

“…For example, both H 2 O 2 and NO have been implicated in ABA-, salicylic acid (SA)-, ethylene-, ExtCaM-, and darkness-induced stomatal closure. Furthermore, several main cellular players in stomatal movement, such as mitogen-activated protein kinases, protein phosphatases, cytoskeleton, and ion channels, have already been identified as likely targets downstream of H 2 O 2 or NO Wang and Song, 2008;Huang et al, 2009;Li et al, 2009;Wilkins et al, 2011;Yemets et al, 2011). G protein signaling to the membrane-bound H 2 O 2 synthetic enzyme, NADPH oxidase, has been implicated in the development of disease resistance and the apoptotic hypersensitive response in rice (Oryza sativa; Suharsono et al, 2002).…”

Allelopathic Compounds as Oxidative Stress Agents: Yes or NO

“…More detailed data, focused on microtubular cytoskeleton formation in stomata guard cells in Arabidopsis plants exposed to tested monoterpenes, indicated reorganization and partial disruption of F-actin filaments (Kriegs et al 2010). It can correspond to induction of not only oxidative stress suggested by increased level of MPK3 and LOX2 transcripts, but also may indicate induction of nitrosative stress due to a strong correlation between nitric oxide (NO) biosynthesis and structure of cytoskeleton (Yemets et al 2011).…”

Plant microtubules reorganization under the indirect UV-B exposure and during UV-B-induced programmed cell death

“…28 Indeed, the transition zone cells are known to be sensitive to endogenous (auxin, ethylene, extracellular Ca 2+ ) and exogenous factors (mechanical pressure, aluminum, pathogens). 29 In turn, cortical MTs in epidermal cells of the transition zone are exceptionally responsive to fluctuations of auxins 30 and nitric oxide content, 4 protein kinase/phosphatase inhibitors 31 and cold treatment as well. 32 We have shown also that immediately after the UV-B exposure (13.6-68 kJ/m 2 ) cortical MTs in both transition and elongation zones depolymerized rapidly.…”