LAMINARIOCOLAX SP (PHAEOPHYCEAE) ASSOCIATED WITH GALL DEVELOPMENTS IN LESSONIA NIGRESCENS (PHAEOPHYCEAE)1
Jiang, Hongxia | Gao, Kunshan | 高坤山 | Helbling, E. Walter（Consejo Nacl Invest Cient & Tecn, RA-9103 Rawson, Chubut, Argentina | [Helbling, E. Walter] Estac Fotobiol Playa Union, RA-9103 Rawson, Chubut, Argentina）
of gall development on this alga, identified the possible causal agent, and assessed the extent of the phenomenon in two wild stands of the host. Our results showed that galls affecting natural populations of L. nigrescens were associated with the infection by a filamentous brown algal endophyte of the genus Laminariocolax. Assignment to Laminariocolax of the endophytes isolated from cultured gall tissue was based on the (i) high internal transcribed spacer 1 (ITS1) sequence similarity and phylogenetic relationship between the Chilean isolates and several species of the genus Laminariocolax endophytic in other kelps, (ii) reproductive and vegetative features of the endophyte in culture, and (iii) anatomical agreement of fully developed galls of Lessonia with those described for other kelp galls caused by endophytic members of Laminariocolax. Unequivocal identification at the species level of the endophytes infecting Lessonia, however, awaits further studies.
Показать больше [+] Меньше [-]Ministry of Science and Technology, National Natural Science Foundation of China [90411018]; Science Foundation of Changshu Institute of Technology [KY11707]
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