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Both ozone exposure and soil water stress are able to induce stomatal sluggishness (Articolo in rivista)

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Both ozone exposure and soil water stress are able to induce stomatal sluggishness (Articolo in rivista) (literal)

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Hoshika Y., Omasa K., PAOLETTI E. (2013)
Both ozone exposure and soil water stress are able to induce stomatal sluggishness
in Environmental and experimental botany; Pergamon-Elsevier Science Ltd., Oxford (Regno Unito)
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1) Hoshika Y., Omasa K. 1) Univ Tokyo, Grad Sch Agr & Life Sci, Bunkyo Ku, Tokyo 1138657, Japan (literal)

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Both ozone exposure and soil water stress are able to induce stomatal sluggishness (literal)

Abstract

We tested whether short-term exposure to realistic ozone pollution (<= 150 ppb, 1 h) and soil water stress (soil water content <= 15%) slow stomatal dynamics in an ozone-sensitive cultivar of snapbean. Both ozone exposure and water stress caused stomata to be sluggish in the degree of closure after leaf severing, while ozone also delayed the time the closing signal was perceived. Ozone-induced aberrations lasted up to the night and caused incomplete closure of stomata. No synergic effect was observed in the dynamic measurements. In contrast, at steady-state, water stress protected the plants from the negative ozone effects on stomatal conductance. Ambient ozone peaks may thus cause sluggish stomatal response and increase leaf water loss both under well watered and drought conditions. (literal)

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