caa a22 4500 469056967 CHVBK 20180323132846.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF03002941 doi (NATIONALLICENCE)springer-10.1007/BF03002941 Ecologia-Photosynthesis-induced H+ extrusion in aquatic plants. A comparative study [Elektronische Daten] [Francesco Albergoni, Maria Marrè, Alberto Venegoni] Estrusione di protoni indotta dalla fotosintcsi in piante acquatiche. Uno studio comparativo Evidence has been presented showing that, inElodea densa Planchon leaves, the strong activation of electrogenic H+ extrusion by light depends on a photosynthesis-mediated stimulation of the plasmamembrane ATP-driven proton pump. In this work we present the results of a comparative investigation on different aquatic plant species, chosen on the basis of a wide taxonomic distribution, with the purpose to ascertain if the stimulating effect of photosynthesis on proton extrusion is a common mechanism among aquatic plants or if it is related to their phenotypic typology or taxonomic distribution. The data show that, in eight of the twelve tested species, illumination of excised leaves induced a photosynthesis-mediated (DCMU-sensitive) increase of the capacity to acidify the incubation medium, this effect being imputable to the activation of the plasmamembrane H + -ATPase. No correlation was found between the light-induced stimulating effect and the taxonomic position of the plant species. Among the morphological characters considered, only the presence of chloroplasts in the cells of epidermis appeared correlated with the positive response to light. Accademia nazionale dei Lincei, 1992 Aquatic plants nationallicence H+ extrusion nationallicence Photosynthesis nationallicence Albergoni Francesco Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut Marrè Maria Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut Venegoni Alberto Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut Rendiconti Lincei Springer-Verlag 3/4(1992-12-01), 353-360 1120-6349 3:4<353 1992 3 12210 https://doi.org/10.1007/BF03002941 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF03002941 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Albergoni Francesco Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut NATIONALLICENCE 700 1- Marrè Maria Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut NATIONALLICENCE 700 1- Venegoni Alberto Dipartimento di Biologia, Università degli Studi di Milano C.N.R. - Centro Studi di Biologia cellulare e molecolare delle piante, Via Celoria, 26, 20133, Milano aut NATIONALLICENCE 773 0- Rendiconti Lincei Springer-Verlag 3/4(1992-12-01), 353-360 1120-6349 3:4<353 1992 3 12210 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer