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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 PublicationMARINE BIOLOGY
ISSN0025-3162
Volume151Issue:5Pages:1751-1759
AbstractThe 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.
SubtypeArticle
KeywordUltraviolet-b Radiation Induced Dna-damage Ulva-pertusa Chlorophyta Life-history Stages Photosynthetic Performance Marine Macroalgae Depth Zonation Amino-acids Growth Temperature
DepartmentShantou 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 AreaMarine & Freshwater Biology
DOI10.1007/s00227-007-0632-1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000246614300014
WOS KeywordULTRAVIOLET-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
Identifierhttp://ir.ihb.ac.cn/handle/152342/8582
Collection期刊论文
Corresponding AuthorGao, KS, Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China
Affiliation1.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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