지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Vertebrata lanosa is an abundant and obligate red algal epiphyte of Ascophyllum nodosum that forms part of a complex and highly integrated symbiotic system that includes the ascomycete, Mycophycias ascophylli. As part of ongoing studies to resolve interactions among species in the symbiosis, we used pulse amplitude modulation fluorimetry of chlorophyll a fluorescence, from photosystem II (PSII), to measure the maximum quantum yield ($F_v/F_m$) of PSII [$QY(II)_{max}$] and relative photosynthetic electron transport rates (rETR), as a function of light intensity, in order to evaluate the photosynthetic capacity of the two algal symbionts in the field and in the laboratory under different treatments. Our primary question was 'Is the ecological integration of these species reflected in a corresponding physiological integration involving photosynthetic process?' In the laboratory we measured changes in $QY(II)_{max}$ in thalli of V. lanosa and A. nodosum over one week periods when maintained together in either attached or detached treatments or when maintained separated from each other. While the $QY(II)_{max}$ of PSII of A. nodosum remained high and showed no significant variation among treatments, V. lanosa showed decreasing performance in the following conditions: V. lanosa attached to A. nodosum, V. lanosa in the same culture, but not attached to A. nodosum, and V. lanosa alone. These results are consistent with observations in which rETR was reduced in V. lanosa maintained alone versus attached to A. nodosum. Values for $QY(II)_{max}$ in V. lanosa measured in the field in fully submerged thalli were similar to those measured in the laboratory when V. lanosa was attached to it obligate host A. nodosum. Our results provide evidence of a physiological association of the epiphyte and its host that reflects the known ecology.
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참고문헌 (54)
참고문헌 신청
Brown, N. E. / 2013 / Host selection by larvae of the marine insect Halocladius variabilis: nutritional dependency or escape from predation? / J. Mar. Biol. Assoc. U. K 93:1373~1379
Cardinal, A. / 1992 / Distribution of the epiphytes Pilayella littoralis (L.) Kjellm and Polysiphonia lanosa (L.) Tandy on Ascophyllum nodosum (L.) Le Jol. in the Bay of Fundy (N. B. Canada) / Cah. Biol. Mar 33:125~135
Ciciotte, S. L. / 1997 / Carbon exchange between Polysiphonia lanosa (Rhodophyceae) and its brown algal host / Am. J. Bot 84:1614~1616
Citharel, J. / 1972 / Contribution à l’étude du metabolisme azoté des algues marines. Utilisation métabolique d’acide glutamique: 14C par Ascophyllum nodosum (Linne) Le Jolis et Polysiphonia lanosa (Linne) Tandy / Bot. Mar 15:157~161
Craigie, J. S. / 2011 / Seaweed extract stimuli in plant science and agriculture / J. Appl. Phycol 23:371~393
Cardinal, A. / 1992 / Distribution of the epiphytes Pilayella littoralis (L.) Kjellm and Polysiphonia lanosa (L.) Tandy on Ascophyllum nodosum (L.) Le Jol. in the Bay of Fundy (N. B. Canada) / Cah. Biol. Mar 33:125~135
Ciciotte, S. L. / 1997 / Carbon exchange between Polysiphonia lanosa (Rhodophyceae) and its brown algal host / Am. J. Bot 84:1614~1616
Citharel, J. / 1972 / Contribution à l’étude du metabolisme azoté des algues marines. Utilisation métabolique d’acide glutamique: 14C par Ascophyllum nodosum (Linne) Le Jolis et Polysiphonia lanosa (Linne) Tandy / Bot. Mar 15:157~161
Craigie, J. S. / 2011 / Seaweed extract stimuli in plant science and agriculture / J. Appl. Phycol 23:371~393
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