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题名: Photosynthetic performance and acclimation of Incarvillea delavayi to water stress
作者: Cai, Y. -F.1; Zhang, S. -B.1; Hu, H.1; Li, S. -Y.1
刊名: BIOLOGIA PLANTARUM
关键词: chlorophyll ; fluorescence ; net photosynthetic rate ; nitrogen ; photosynthetic limitation ; RuBPCO ; stomatal conductance ; water stress
英文摘要: The photosynthetic performance and related leaf traits of Incarvillea delavayi Bur. et Franch were studied at different water regimes to assess its capacity for photosynthetic acclimation to water stress. The initial response of I. delavayi to water stress was the closure of stomata, which resulted in down-regulation of photosynthesis. The stomatal limitation (S(L)) represented the main component to photosynthetic limitations but non-stomatal limitation (NS(L)) increased quickly with the increasing water stress, and had similar magnitude to SL under severe water stress (soil moisture 25 - 30 % of field capacity). Chlorophyll (Chl) a fluorescence parameters characterizing photosystem (PS) 2 photochemical efficiency (Phi(PS2)), electron transport rate (J) and photochemical quenching (qP) decreased with the increasing water stress, indicating impaired photosynthetic apparatus. However, the water-stressed plants had a increased mesophyll CO(2) diffusional conductance, Chl a/b ratio, leaf nitrogen partitioning in RuBPCO and bioenergetics in later grown parts, indicating that I. delavay had a substantial physiological plasticity and showed a good tolerance to water stress.
出版日期: 2010-03-01
卷号: 54, 期号:1, 页码:89-96
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0006-3134
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2415
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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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China

Recommended Citation:
Cai, YF; Zhang, SB; Hu, H; Li, SY.Photosynthetic performance and acclimation of Incarvillea delavayi to water stress,BIOLOGIA PLANTARUM,2010,54(1):89-96
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