Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex
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Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex. / Seco, Roger; Filella, Iolanda; Llusià, Joan; Peñuelas, Josep.
I: Acta Physiologiae Plantarum, Bind 33, Nr. 6, 2011, s. 2413-2422.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex
AU - Seco, Roger
AU - Filella, Iolanda
AU - Llusià, Joan
AU - Peñuelas, Josep
PY - 2011
Y1 - 2011
N2 - Several volatile organic compounds (VOCs) have been reported as having a communication role between plants and also between plants and animals. We aimed to test whether methanol, a short-chain oxygenated VOC, could also have a signalling role between plants. We monitored photosynthetic performance and VOC exchange rates of Quercus ilex L. saplings before and after two different treatments: (a) clipping of some leaves to simulate an attack by herbivores and (b) fumigation with gaseous methanol for 5 h to simulate the amount of methanol a plant could receive from surrounding plants if those had been already attacked by herbivores. The clipping treatment enhanced the photosynthetic rates, the chlorophyll a to b ratio and the carotenoid to chlorophyll ratio of non-clipped leaves, suggesting an activation of plant protective metabolism. Also, a small but interesting systemic (in non-clipped leaves) increase in methanol emission rates was observed, which agrees with the possibility that methanol may act as a signalling cue. The methanol fumigation treatment induced an increase in the actual photochemical efficiency of PSII and also in the carotenoid to chlorophyll ratio. Methanol fumigation also promoted a 14% increase in the monoterpene emission rate, 1 day after the treatment, a similar response to the ones induced by other signalling VOCs. The enhanced monoterpene emissions could add to the blend of VOCs emitted after stress and be part of further signalling pathways, thus forwarding the message started by methanol. This study suggests that clipping and methanol fumigation at natural concentrations elicit significant neighbour plant physiological responses and further BVOC emissions.
AB - Several volatile organic compounds (VOCs) have been reported as having a communication role between plants and also between plants and animals. We aimed to test whether methanol, a short-chain oxygenated VOC, could also have a signalling role between plants. We monitored photosynthetic performance and VOC exchange rates of Quercus ilex L. saplings before and after two different treatments: (a) clipping of some leaves to simulate an attack by herbivores and (b) fumigation with gaseous methanol for 5 h to simulate the amount of methanol a plant could receive from surrounding plants if those had been already attacked by herbivores. The clipping treatment enhanced the photosynthetic rates, the chlorophyll a to b ratio and the carotenoid to chlorophyll ratio of non-clipped leaves, suggesting an activation of plant protective metabolism. Also, a small but interesting systemic (in non-clipped leaves) increase in methanol emission rates was observed, which agrees with the possibility that methanol may act as a signalling cue. The methanol fumigation treatment induced an increase in the actual photochemical efficiency of PSII and also in the carotenoid to chlorophyll ratio. Methanol fumigation also promoted a 14% increase in the monoterpene emission rate, 1 day after the treatment, a similar response to the ones induced by other signalling VOCs. The enhanced monoterpene emissions could add to the blend of VOCs emitted after stress and be part of further signalling pathways, thus forwarding the message started by methanol. This study suggests that clipping and methanol fumigation at natural concentrations elicit significant neighbour plant physiological responses and further BVOC emissions.
KW - BVOCs
KW - Emission rates
KW - Methanol
KW - Monoterpenes
KW - Photosynthetic pigments
KW - Photosynthetic rates
KW - Plant-plant communication
KW - Quercus ilex
KW - Signal
U2 - 10.1007/s11738-011-0782-0
DO - 10.1007/s11738-011-0782-0
M3 - Journal article
AN - SCOPUS:80054095051
VL - 33
SP - 2413
EP - 2422
JO - Acta Physiologiae Plantarum
JF - Acta Physiologiae Plantarum
SN - 0137-5881
IS - 6
ER -
ID: 234282658