Slow photosynthetic induction and low photosynthesis in Paphiopedilum armeniacum are related to its lack of guard cell chloroplast and peculiar stomatal anatomy

doi:10.1111/j.1399-3054.2011.01448.x

	Slow photosynthetic induction and low photosynthesis in Paphiopedilum armeniacum are related to its lack of guard cell chloroplast and peculiar stomatal anatomy
	Zhang, Shi-Bao2 ; Guan, Zhi-Jie 1; Chang, Wei 1; Hu, Hong1 ; Yin, Qing 1; Cao, Kun-Fang 2
通讯作者	Hu, H (reprint author), Chinese Acad Sci, Kunming Inst Bot, Beijing 650204, Yunnan, Peoples R China
	2011-06-01
发表期刊	PHYSIOLOGIA PLANTARUM
ISSN	0031-9317
卷号	142 期号:2 页码:118-127
摘要	Paphiopedilum and Cypripedium are close relatives in the subfamily Cypripedioideae. Cypripedium leaves contain guard cell chloroplasts, whereas Paphiopedilum do not. It is unclear whether the lack of guard cell chloroplasts affects photosynthetic induction, which is important for understory plants to utilize sunflecks. To understand the role of guard cell chloroplasts in photosynthetic induction of Paphiopedilum and Cypripedium, the stomatal anatomy and photosynthetic induction of Paphiopedilum armeniacum and Cypripedium flavum were investigated at different ratios of red to blue light. The highest stomatal opening and photosynthesis of intact leaves in P. armeniacum were induced by irradiance enriched with blue light. Its stomatal opening could be induced by red light 250 mu mol m-2 s-1, but the magnitude of stomatal opening was lower than those at the other light qualities. However, the stomatal opening and photosynthesis of C. flavum were highly induced by mixed blue and red light rather than pure blue or red light. The two orchid species did not differ in stomatal density, but P. armeniacum had smaller stomatal size than C. flavum. The stomata of P. armeniacum were slightly sunken into the leaf epidermis, while C. flavum protruded above the leaf surface. The slower photosynthetic induction and lower photosynthetic rate of P. armeniacum than C. flavum were linked to the lack of guard cell chloroplasts and specific stomatal structure, which reflected an adaptation of Paphiopedilum to periodic water deficiency in limestone habitats. These results provide evidence for the morphological and physiological evolution of stomata relation for water conservation under natural selection.
关键词	Blue-light Gas-exchange Co2 Diffusion Red-light Conductance Mesophyll Responses Orchidaceae Density Leaves
学科领域	Plant Sciences
DOI	10.1111/j.1399-3054.2011.01448.x
收录类别	SCI
语种	英语
WOS记录号	WOS:000290450600002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/5205
专题	资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Beijing 650204, Yunnan, Peoples R China 2.Chinese Acad Sci, Key Lab Trop Plant Ecol, Xishuangbanna Trop Bot Garden, Beijing 650204, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shi-Bao,Guan, Zhi-Jie,Chang, Wei,et al. Slow photosynthetic induction and low photosynthesis in Paphiopedilum armeniacum are related to its lack of guard cell chloroplast and peculiar stomatal anatomy[J]. PHYSIOLOGIA PLANTARUM,2011,142(2):118-127.
APA	Zhang, Shi-Bao,Guan, Zhi-Jie,Chang, Wei,Hu, Hong,Yin, Qing,&Cao, Kun-Fang.(2011).Slow photosynthetic induction and low photosynthesis in Paphiopedilum armeniacum are related to its lack of guard cell chloroplast and peculiar stomatal anatomy.PHYSIOLOGIA PLANTARUM,142(2),118-127.
MLA	Zhang, Shi-Bao,et al."Slow photosynthetic induction and low photosynthesis in Paphiopedilum armeniacum are related to its lack of guard cell chloroplast and peculiar stomatal anatomy".PHYSIOLOGIA PLANTARUM 142.2(2011):118-127.

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