Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis

doi:10.3390/plants12051186

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	Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis
	Wang,Xiao-Qian; Zeng,Zhi-Lan; Shi,Zi-Ming; Wang,Ji-Hua; Huang,Wei
	2023
发表期刊	PLANTS-BASEL
ISSN	2223-7747
卷号	12 期号:5 页码:1186
摘要	Photosynthetic efficiency under both steady-state and fluctuating light can significantly affect plant growth under naturally fluctuating light conditions. However, the difference in photosynthetic performance between different rose genotypes is little known. This study compared the photosynthetic performance under steady-state and fluctuating light in two modern rose cultivars (Rose hybrida), Orange Reeva and Gelato, and an old Chinese rose plant Rosa chinensis cultivar, Slater's crimson China. The light and CO2 response curves indicated that they showed similar photosynthetic capacity under steady state. The light-saturated steady-state photosynthesis in these three rose genotypes was mainly limited by biochemistry (60%) rather than diffusional conductance. Under fluctuating light conditions (alternated between 100 and 1500 mu mol photons m(-2) m(-1) every 5 min), stomatal conductance gradually decreased in these three rose genotypes, while mesophyll conductance (g(m)) was maintained stable in Orange Reeva and Gelato but decreased by 23% in R. chinensis, resulting in a stronger loss of CO2 assimilation under high-light phases in R. chinensis (25%) than in Orange Reeva and Gelato (13%). As a result, the variation in photosynthetic efficiency under fluctuating light among rose cultivars was tightly related to g(m). These results highlight the importance of g(m) in dynamic photosynthesis and provide new traits for improving photosynthetic efficiency in rose cultivars.
关键词	chlorophyll fluorescence CO2 assimilation mesophyll conductance photosynthetic limitation stomatal conductance MESOPHYLL CONDUCTANCE TEMPERATURE RESPONSE PHOTOSYSTEM-II GAS-EXCHANGE WATER-USE INCREASING PHOTOSYNTHESIS CHLOROPHYLL FLUORESCENCE CO2 ASSIMILATION C-3 CAPACITY
学科领域	Plant Sciences
DOI	10.3390/plants12051186
WOS记录号	WOS:000947631200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75048
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Wang,Xiao-Qian,Zeng,Zhi-Lan,Shi,Zi-Ming,et al. Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis[J]. PLANTS-BASEL,2023,12(5):1186.
APA	Wang,Xiao-Qian,Zeng,Zhi-Lan,Shi,Zi-Ming,Wang,Ji-Hua,&Huang,Wei.(2023).Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis.PLANTS-BASEL,12(5),1186.
MLA	Wang,Xiao-Qian,et al."Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis".PLANTS-BASEL 12.5(2023):1186.

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