caa a22 4500 47578412X CHVBK 20180406123653.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1008198404529 doi (NATIONALLICENCE)springer-10.1023/A:1008198404529 Effect of UV radiation on photoinhibition of marine macrophytes in culture systems [Elektronische Daten] [Eneas Aguirre-von-Wobeser, Felix Figueroa, Alejandro Cabello-Pasini] The present study examined the effect of UV andphotosynthetically active radiation (PAR) onphotoinhibition and recovery in the Phaeophyte Macrocystis pyrifera, the Rhodophyte Chondruscrispus and the Chlorophyte Ulva lactuca underoutdoor culture conditions. There was an increase inphotoinhibition as a consequence of high exposure toUV-B radiation in M. pyrifera, however, highlevels of PAR accounted for most of thephotoinhibition in C. crispus and U.lactuca. Photodamage by UV-A, UV-B and PAR wascompletely repaired within 5 h and effective quantumyield reached pretreatment values in the three speciesstudied. Species were less susceptible tophotoinhibition after being incubated for 5 d underhigh exposures of natural irradiance suggesting aphotoadaptive process. The recovery of the effectivequantum yield was impaired by long exposure to highlevels of UV-B in C. crispus and UV-A, UV-B andPAR in M. pyrifera. This suggests a differentkind of damage by UV-A and PAR radiation, one to thephotosynthetic apparatus and another which affects therepair mechanism of some species. There was anincrease in UV-absorption (λ 330 nm) in M. pyrifera and C. crispus within four days ofthe initiation of the experiment suggesting that thesespecies photoprotect their photosynthetic system whenexposed to elevated UV and PAR levels. Kluwer Academic Publishers, 2000 Chlorophyll fluorescence nationallicence Chondruscrispus nationallicence Macrocystis pyrifera nationallicence photosynthesis nationallicence photoinhibition nationallicence outdoor culture system nationallicence Ulvalactuca nationallicence UV-radiation nationallicence Aguirre-von-Wobeser Eneas Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Ensenada, A.P. # 453, 22800, Baja California, México aut Figueroa Felix Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, E-29071, Málaga, Spain aut Cabello-Pasini Alejandro Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, A.P. # 453, 22800, Baja California, México aut Journal of Applied Phycology Kluwer Academic Publishers 12/2(2000-03-01), 159-168 0921-8971 12:2<159 2000 12 10811 https://doi.org/10.1023/A:1008198404529 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008198404529 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aguirre-von-Wobeser Eneas Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Ensenada, A.P. # 453, 22800, Baja California, México aut NATIONALLICENCE 700 1- Figueroa Felix Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, E-29071, Málaga, Spain aut NATIONALLICENCE 700 1- Cabello-Pasini Alejandro Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, A.P. # 453, 22800, Baja California, México aut NATIONALLICENCE 773 0- Journal of Applied Phycology Kluwer Academic Publishers 12/2(2000-03-01), 159-168 0921-8971 12:2<159 2000 12 10811 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer