LIGHT QUALITY DURING GROWTH OF TRADESCANTIA-ALBIFLORA REGULATES PHOTOSYSTEM STOICHIOMETRY, PHOTOSYNTHETIC FUNCTION AND SUSCEPTIBILITY TO PHOTOINHIBITION

	LIGHT QUALITY DURING GROWTH OF TRADESCANTIA-ALBIFLORA REGULATES PHOTOSYSTEM STOICHIOMETRY, PHOTOSYNTHETIC FUNCTION AND SUSCEPTIBILITY TO PHOTOINHIBITION
	Liu L. X.; Chow W. S.; Anderson J. M.
	1993
发表期刊	Physiologia Plantarum
ISSN	0031-9317
卷号	89 期号:4 页码:854-860
摘要	Trandescantia albiflora (Kunth) was grown under two different light quality regimes of comparable light quantity: in red + far-red light absorbed mainly by photosystem I(PSI light) and yellow light absorbed mainly by photosystem II (PSII light). The composition, function and ultrastructure of chloroplasts, and photoinhibition of photosynthesis in the two types of leaves were compared. In contrast to regulation by light quantity (Chow et al. 1991. Physiol. Plant. 81: 175-182), light quality exerted an effect on the composition of pigment complexes, function and structure of chloroplasts in Tradescantia: PSII light-grown leaves had higher Chi a/b ratios, higher PSI concentrations, lower PSII/PSI reaction centre ratios and less extensive thylakoid stacking than PSI light-grown leaves. Light quality triggered modulations of chloroplast components, leading to a variation of photosynthetic characteristics. A larger proportion of primary quinone acceptor (Q(A)) in PSI light-grown leaves was chemically reduced at any given irradiance. It was also observed that the quantum yield of PSII photochemistry was lower in PSI light-grown leaves. PSI light-grown leaves were more sensitive to photoinihibition and recovery was slower compared to PSII light-grown leaves, showing that the PSII reaction centre in PSI light-grown leaves was more easily impaired by photoinhibition. The increase in susceptibility of leaves to photoinhibition following blockage of chloroplast-encoded protein synthesis was greater in PSII light-grown leaves, showing that these leaves normally have a greater capacity for PSII repair. Inhibition of zeaxanthin formation by dithiothreitol slightly increased sensitivity to photoinhibition in both PSI and PSII light-grown leaves.
收录类别	SCI
语种	英语
WOS记录号	WOS:A1993MU81300025
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34496
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu L. X.,Chow W. S.,Anderson J. M.. LIGHT QUALITY DURING GROWTH OF TRADESCANTIA-ALBIFLORA REGULATES PHOTOSYSTEM STOICHIOMETRY, PHOTOSYNTHETIC FUNCTION AND SUSCEPTIBILITY TO PHOTOINHIBITION[J]. Physiologia Plantarum,1993,89(4):854-860.
APA	Liu L. X.,Chow W. S.,&Anderson J. M..(1993).LIGHT QUALITY DURING GROWTH OF TRADESCANTIA-ALBIFLORA REGULATES PHOTOSYSTEM STOICHIOMETRY, PHOTOSYNTHETIC FUNCTION AND SUSCEPTIBILITY TO PHOTOINHIBITION.Physiologia Plantarum,89(4),854-860.
MLA	Liu L. X.,et al."LIGHT QUALITY DURING GROWTH OF TRADESCANTIA-ALBIFLORA REGULATES PHOTOSYSTEM STOICHIOMETRY, PHOTOSYNTHETIC FUNCTION AND SUSCEPTIBILITY TO PHOTOINHIBITION".Physiologia Plantarum 89.4(1993):854-860.

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