| Effects of solar UV radiation on germination of conchospores and morphogenesis of sporelings in Porphyra haitanensis (Rhodophyta) | |
| Jiang, Hongxia; Gao, Kunshan; Helbling, E. Walter; Gao, KS, Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China | |
| 2007-06-01 | |
| Source Publication | MARINE BIOLOGY
 |
| ISSN | 0025-3162 |
| Volume | 151Issue:5Pages:1751-1759 |
| Abstract | The effects of ultraviolet radiation (UVR 280-400 nm) on the germination of Porphyra haitanensis conchospores and on the growth and morphogenesis of the subsequent sporelings were investigated by culturing the released conchospores under natural sunlight from 29 September to 6 October 2005. Germination increased with time and was faster when UV-B was excluded using cut-off filters. There were significant negative effects of UV-B radiation on growth and cell division of sporelings, with decreases up to 18% for thallus length, between 6 and 18% for thallus width, up to 29% for thallus area, and between 6 and 14% for cell size as compared to PAR-controls. UV-A had a significant positive effect on morphogenesis, enhancing the formation of sporelings with cells dividing transversely; on the other hand, UV-B delayed the formation of such sporelings. We also tested the effects of solar UVR on the growth of P. haitanensis juveniles and found no significant effects. Our results indicate that UV-A has an important role in the germination and morphogenesis of the species, but on the other hand, sporelings of P. haitanensis are more sensitive to UV-B radiation than juveniles.; The effects of ultraviolet radiation (UVR 280-400 nm) on the germination of Porphyra haitanensis conchospores and on the growth and morphogenesis of the subsequent sporelings were investigated by culturing the released conchospores under natural sunlight from 29 September to 6 October 2005. Germination increased with time and was faster when UV-B was excluded using cut-off filters. There were significant negative effects of UV-B radiation on growth and cell division of sporelings, with decreases up to 18% for thallus length, between 6 and 18% for thallus width, up to 29% for thallus area, and between 6 and 14% for cell size as compared to PAR-controls. UV-A had a significant positive effect on morphogenesis, enhancing the formation of sporelings with cells dividing transversely; on the other hand, UV-B delayed the formation of such sporelings. We also tested the effects of solar UVR on the growth of P. haitanensis juveniles and found no significant effects. Our results indicate that UV-A has an important role in the germination and morphogenesis of the species, but on the other hand, sporelings of P. haitanensis are more sensitive to UV-B radiation than juveniles. |
| Subtype | Article |
| Keyword | Ultraviolet-b Radiation Induced Dna-damage Ulva-pertusa Chlorophyta Life-history Stages Photosynthetic Performance Marine Macroalgae Depth Zonation Amino-acids Growth Temperature |
| Department | Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Beijing 430072, Peoples R China; Consejo Nacl Invest Cient & Tecn, RA-9103 Rawson, Chubut, Argentina; Estac Fotobiol Playa Union, RA-9103 Rawson, Chubut, Argentina |
| Subject Area | Marine & Freshwater Biology |
| DOI | 10.1007/s00227-007-0632-1 |
| WOS Headings | Science & Technology ; Life Sciences & Biomedicine |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Marine & Freshwater Biology |
| WOS Subject | Marine & Freshwater Biology |
| WOS ID | WOS:000246614300014 |
| WOS Keyword | ULTRAVIOLET-B RADIATION ; INDUCED DNA-DAMAGE ; ULVA-PERTUSA CHLOROPHYTA ; LIFE-HISTORY STAGES ; PHOTOSYNTHETIC PERFORMANCE ; MARINE MACROALGAE ; DEPTH ZONATION ; AMINO-ACIDS ; GROWTH ; TEMPERATURE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/152342/8582 |
| Collection | 期刊论文 |
| Corresponding Author | Gao, KS, Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China |
| Affiliation | 1.Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Beijing 430072, Peoples R China 3.Consejo Nacl Invest Cient & Tecn, RA-9103 Rawson, Chubut, Argentina 4.Estac Fotobiol Playa Union, RA-9103 Rawson, Chubut, Argentina |
| Recommended Citation GB/T 7714 | Jiang, Hongxia,Gao, Kunshan,Helbling, E. Walter,et al. Effects of solar UV radiation on germination of conchospores and morphogenesis of sporelings in Porphyra haitanensis (Rhodophyta)[J]. MARINE BIOLOGY,2007,151(5):1751-1759. |
| APA | Jiang, Hongxia,Gao, Kunshan,Helbling, E. Walter,&Gao, KS, Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China.(2007).Effects of solar UV radiation on germination of conchospores and morphogenesis of sporelings in Porphyra haitanensis (Rhodophyta).MARINE BIOLOGY,151(5),1751-1759. |
| MLA | Jiang, Hongxia,et al."Effects of solar UV radiation on germination of conchospores and morphogenesis of sporelings in Porphyra haitanensis (Rhodophyta)".MARINE BIOLOGY 151.5(2007):1751-1759. |
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