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题名: Flexible and reversible responses to different irradiance levels during photosynthetic acclimation of Cypripedium guttatum
作者: null(张石宝); Hu, Hong; Xu, Kun; Li, Zhong-Rong; Yang Yongping(杨永平)
刊名: JOURNAL OF PLANT PHYSIOLOGY
关键词: chlorophyll fluorescence ; Cypripedium guttatum ; leaf traits ; light availability ; photosynthesis
英文摘要: Cypripedium guttatum can be found both in open and shady habitats. Photosynthetic acclimation of C. guttatum to different light availabilities was detected using measurements of chlorophyll fluorescence, photosynthesis and leaf traits. When growing under low light conditions, C. guttatum exhibited a greater efficiency in photochemical utilization of absorbed tight energy, and a lower ability for nonphotochemical dissipation of excess light energy, as compared to the plants growing under high light conditions. Under intermediate light conditions, C. guttatum exhibited higher photosynthetic capacity (A(max)) than those under both tow tight or high tight conditions. The differences in A(max) among three light environments was linked to the differences in biochemical efficiency, leaf N content (LNC) and leaf dry mass per unit area (LMA), but not to the differences of chlorophyll content. However, there were no significant differences in the light compensation points (LCP) and tight saturation points (LSP) for photosynthesis for the plants growing under the three light conditions. These results indicate that the photosynthetic capacity of C. guttatum leaves allows for flexible and reversible responses to different irradiance levels. Photosynthetic acclimation in C. guttatum was affected by biochemical changes, the changes in LMA and ratio of Chl a/b. Successful acclimation of C. guttatum to a broad range of light levels likely allows for its wide geographical distribution. A level of about 45% sunlight appears to be optimal for photosynthesis. (C) 2006 Elsevier GmbH. All rights reserved.
出版日期: 2007-05-01
卷号: 164, 期号:5, 页码:611-620
DOI标识: 10.1016/j.jplph.2006.02.012
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0176-1617
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2543
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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Recommended Citation:
Zhang, SB; Hu, H; Xu, K; Li, ZR; Yang, YP.Flexible and reversible responses to different irradiance levels during photosynthetic acclimation of Cypripedium guttatum,JOURNAL OF PLANT PHYSIOLOGY,2007,164(5):611-620
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