小麦麸皮水浸提液对铜绿微囊藻(Microcystis aeruginosa)光合色素含量和叶绿素荧光诱导动力学的影响
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WBL对光合系统反应中心电子供体侧没有影响,但是显著抑制光合色素含量及叶绿�arrow荧光诱导动力学变化.Abstract:
小麦麸皮水浸提液(WBL)对铜绿微囊藻(Microcystis aeruginosa)具有较强的抑制作用.为了阐明铜绿微囊藻光合系统对WBL胁迫的响应,本文分析了WBL胁迫下M.aeruginosa CHAB-109细胞光合色素含量及叶绿素荧光诱导动力学变化.结果显示,当WBL浓度为1.6和3.2 g/L时,M.aeruginosa CHAB-109单位细胞内Chl.a和类胡萝卜素含量均显著低于对照.Chl.a光诱导荧光动力学分析结果显示,WBL胁迫下单位反应中心吸收的光能(ABS/RC)、单位反应中心捕获的用于还原QA的能量(TR0/RC)及单位反应中心捕获的用于电子传递的能量(ET0/RC)均受到显著抑制.光合系统Ⅱ(PSⅡ)能量分配比率参数分析结果显示,WBL对光合系统反应中心电子供体侧没有影响,但是显著抑制光合系统反应中心电子受体侧电子传递.综合分析WBL诱导下M.aeruginosa CHAB-109 PSⅡ能量流动比活性能参数和能量分配比率参数显示,反应中心电子受体侧电子由反应中心传递到QA及QA更远的部位均为WBL的抑制作用位点.read more
References
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Chlorophyll fluorescence—a practical guide
Kate Maxwell,Giles N. Johnson +1 more
TL;DR: An introduction for the novice into the methodology and applications of chlorophyll fluorescence is provided and a selection of examples are used to illustrate the types of information that fluorescence can provide.
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Photosynthesis: from Light to Biosphere
TL;DR: In this article, the authors present an approach to the problem of photophosphorylation in vivo, using a patch-clamp study on the regulation of electrogenesis by protons.
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Ranking of dark chilling tolerance in soybean genotypes probed by the chlorophyll a fluorescence transient O-J-I-P
TL;DR: It is demonstrated how the chlorophyll a fluorescence transient O-J-I-P can be utilised in screening for dark chilling tolerance in large numbers of soybean genotypes and the formulation of a novel parameter, the so-called chill factor index (CFI), capable of revealing large differences in dark chilling response among the genotypes.
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Characterization and early detection of grapevine (Vitis vinifera) stress responses to esca disease by in situ chlorophyll fluorescence and comparison with drought stress
TL;DR: In this article, the authors used fast chlorophyll a fluorescence monitoring as a wood decay early detection tool for detecting esca infection in grapevines using a nondestructive method.
Journal ArticleDOI
Isolation and characterization of a novel antialgal allelochemical from Phragmites communis
Fengmin Li,Hong-Ying Hu +1 more
TL;DR: The isolated allelopathic fraction showed strong inhibition activity on the growth of Ch Lorella pyrenoidosa and Microcystis aeruginosa but had no inhibition on Chlorella vulgaris, and was identified by nuclear magnetic resonance and gas chromatography-mass spectrometry as ethyl 2-methylacetoacetate.