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2017 ; 114
(18
): 4597-4602
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Regulating plant physiology with organic electronics
#MMPMID28420793
Poxson DJ
; Karady M
; Gabrielsson R
; Alkattan AY
; Gustavsson A
; Doyle SM
; Robert S
; Ljung K
; Grebe M
; Simon DT
; Berggren M
Proc Natl Acad Sci U S A
2017[May]; 114
(18
): 4597-4602
PMID28420793
show ga
The organic electronic ion pump (OEIP) provides flow-free and accurate delivery
of small signaling compounds at high spatiotemporal resolution. To date, the
application of OEIPs has been limited to delivery of nonaromatic molecules to
mammalian systems, particularly for neuroscience applications. However, many
long-standing questions in plant biology remain unanswered due to a lack of
technology that precisely delivers plant hormones, based on cyclic alkanes or
aromatic structures, to regulate plant physiology. Here, we report the employment
of OEIPs for the delivery of the plant hormone auxin to induce differential
concentration gradients and modulate plant physiology. We fabricated OEIP devices
based on a synthesized dendritic polyelectrolyte that enables electrophoretic
transport of aromatic substances. Delivery of auxin to transgenic Arabidopsis
thaliana seedlings in vivo was monitored in real time via dynamic fluorescent
auxin-response reporters and induced physiological responses in roots. Our
results provide a starting point for technologies enabling direct, rapid, and
dynamic electronic interaction with the biochemical regulation systems of plants.
|*Electronics
[MESH]
|Arabidopsis/genetics/*growth & development
[MESH]