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Oxygen enhances the recovery of Potamogeton maackianus from prolonged exposure to very low irradiance
Li, Youzhi; Xie, Yonghong; Ren, Bo; Luo, Wenbo; Huang, Jishan
Corresponding AuthorXie, Yonghong
2007-04-01
Source PublicationAQUATIC BOTANY
ISSN0304-3770
Volume86Issue:3Pages:295-299
SubtypeArticle
AbstractRecovery ability in relation to carbohydrate content of Potamogeton maackianus growing in two dissolved oxygen concentrations (8 and 2 mg L-1) was investigated during 28 days exposure to very low irradiance (about 0.06 mu mol m(-2) s(-1)). Plant weight remained relatively constant (0.19 g dry wt plant(-1)) within the initial 21 days in the high oxygen treatment, but decreased to 0.14 g dry wt plant(-1) at the end of the experiment. In low oxygen environments, plant weight was similar within the initial 14 days, but decreased to 0.08 g dry wt plant(-1) at 21 day. During the experimental period, both soluble sugar and starch contents in shoots decreased with time. Compared to high oxygen treatment, plants in the low oxygen treatment depleted starch more quickly (25 versus 18 mg g(-1) at 28 day) but remained a relatively high soluble sugar content (0.9 versus 1.8 mg g(-1) at 28 day). After recovery in high light and high dissolved oxygen conditions for 1 week, plant growth rate, new branch number, stem elongation rate and leaf recruitment number were significantly higher in high oxygen than in the low oxygen treatments. These data suggest that the ability of the plant to recover from prolonged exposure to very low irradiance is related to the depletion level of carbohydrate stored in plant tissues, which is regulated by oxygen availability in the water. (c) 2006 Elsevier B.V. All rights reserved.
KeywordAlcoholic Fermentation Anoxia Decline Dissolved Oxygen Potamogeton Maackianus Recovery
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.aquabot.2006.11.001
WOS Subject ExtendedPlant Sciences ; Marine & Freshwater Biology
Indexed BySCI
WOS KeywordEELGRASS ZOSTERA-MARINA ; MINIMUM LIGHT REQUIREMENTS ; FRESH-WATER MACROPHYTES ; CARBON TRANSLOCATION ; DEPTH LIMITS ; ROOTS ; PHOTOSYNTHESIS ; DYNAMICS ; SEAGRASS ; GROWTH
Language英语
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WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000244015300014
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10526
Collection成都山地所知识仓储(2009年以前)
Affiliation1.Chinese Acad Sci, Inst Subtrop Agr, Changsha 410125, Peoples R China
2.Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Li, Youzhi,Xie, Yonghong,Ren, Bo,et al. Oxygen enhances the recovery of Potamogeton maackianus from prolonged exposure to very low irradiance[J]. AQUATIC BOTANY,2007,86(3):295-299.
APA Li, Youzhi,Xie, Yonghong,Ren, Bo,Luo, Wenbo,&Huang, Jishan.(2007).Oxygen enhances the recovery of Potamogeton maackianus from prolonged exposure to very low irradiance.AQUATIC BOTANY,86(3),295-299.
MLA Li, Youzhi,et al."Oxygen enhances the recovery of Potamogeton maackianus from prolonged exposure to very low irradiance".AQUATIC BOTANY 86.3(2007):295-299.
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