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热带农业科学 2017年第9期37卷 1-4页

作者：郑涛郑域茹危天进林晓兰武英李发林福建省热带作物科学研究所福建漳州363001 福建省武平县土壤肥料技术站福建龙岩364300

应用jip-test初步分析了不同溶液处理对柚苗叶片光合PSⅡ系统的影响,结果表明:处理后柚叶F_o升高,F_m、F_v值降低,F_v/F_m、F_v/F_o、F_m/F_o比值均降低;经百喜草、圆叶决明浸提液处理的柚苗,其叶片F_o增加幅度较小,F_m、F_v值降低幅度... 详细信息

应用jip-test初步分析了不同溶液处理对柚苗叶片光合PSⅡ系统的影响,结果表明:处理后柚叶F_o升高,F_m、F_v值降低,F_v/F_m、F_v/F_o、F_m/F_o比值均降低;经百喜草、圆叶决明浸提液处理的柚苗,其叶片F_o增加幅度较小,F_m、F_v值降低幅度较小,表明2个处理PSⅡ光合色素吸收能量后,以热能和荧光形式散失的部分较少,有较多的能量可以用于下一步电子传递和能量转化,受体侧电子传递能够较为顺利进行,而2个浓度除草剂溶液处理后F_o、F_m、F_v变化幅度均最大,表明该处理使叶片吸收能量的一大部分(37.47%、40.61%)以各种形式散失,电子传递阻力较大;各处理对柚叶PSⅡ潜在活性(F_v/F_o)及捕获激发能效率(F_m/F_o)的影响要远大于对原初光能转化效率(F_v/F_m)的影响,各处理对原初光能的转化效率影响范围在5.98%~16.95%(不含CK),百喜草、圆叶决明浸提液处理对柚叶PSⅡ原初光能转化效率的影响最小,2个浓度除草剂处理F_v/F_o、F_m/F_o值大幅降低,对柚叶PSⅡ的功能伤害程度较大,严重影响了光合作用的进行。

关键词： jip-test 柚果园生草

Alleviatory effect of rare earth micro-fertilizer on photosystemⅡ(PSⅡ)photoinhibition in Pseudostellaria heterophylla leaves at photosynthetic midday depression

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Journal of Rare Earths 2022年第7期40卷 1156-1164页

作者： Yingli Ma Tao Wang Yinfeng Xie Qian Lv Lingling Qiu Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037China Jiangsu Key Laboratory for the Research and Utilization of Plant Resources Institute of BotanyJiangsu Province and Chinese Academy of Sciences(Nanjing Botanical Garden Mem.Sun Yat-Sen)Nanjing 210014China

In order to explo re the mitigatory mechanism of rare earths on the midday depression of photosynthesis,this study used fast-phase chlorophyll fluorescence technology combined with an antioxidant enzyme system to analyze the effects of lanthanum and cerium on the photosystemⅡ(PSⅡ)function of Pseudostellaria heterophylla leaves at *** results show that the maximum photochemical efficiency(F_(v)/F_(m))and the photosynthetic performance index(PI_(ABS))of *** leaves during the photo synthetic noon-break are only 0.73 and 0.86,*** leaves of *** show obvious *** application of two rare earth fertilizers promotes the light energy absorption,capture,conversion,and electron transfer efficiencies of PSⅡin the *** leaves and alleviates the photoinhibition caused by excess excitation ***,the effect of lanthanum is better than that of *** the fertilization groups,*** leaves show higher PSⅡphotochemical *** protects the oxygen-evolving complex(OEC)activity of ***,thus reducing oxidative damage to the chloroplasts and preventing the dissociation of the thylakoids to maintain the normal physiological functioning of PSⅡ,thereby reducing the degree of ***,fertilization increases the electron transfer ability from Q_(A) to Q_(B) on the PSⅡelectron receptor side of *** analysis shows that the fluorescence parameters V_(L),V_(K),and V_(J) are significantly negatively correlated with antioxidant enzyme activity and are significantly positively correlated with malondialdehyde content,relative electric conductivity and reactive oxygen species(ROS),which further indicates that rare earths can enhance the ROS scavenging system in plants and reduce the degree of membrane lipid peroxidation and plasma membrane damage,thereby maintaining the structure and function of the OEC on the donor side of PSⅡ,increasing the elect

关键词： Pseudostellaria heterophylla Rare earths Photoinhibition jip-test Antioxidant enzyme system

Characteristics of Photosystem Ⅱ Behavior in Cotton(Gossypium hirsutum L.) Bract and Capsule Wall

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Journal of Integrative Agriculture 2013年第11期12卷 2056-2064页

作者： ZHANG Ya-li LUO Hong-hai HU Yuan-yuan Reto J Strasser ZHANG Wang-feng Key Laboratory of Oasis Eco-Agriculture Xinjiang Production and Construction Group/Agricultural CollegeShihezi University Bioenergetics Laboratory University of Geneva Weed Research Laboratory Nanjing Agricultural University North West University

Though bract and capsule wall of boll in cotton （Gossypium hirsutum L.） have different photosynthetic capacities, the features of photosystem II （PS II） in these organs are scarce. In this paper, chlorophyll a lfuorescence emission was measured to investigate the difference in the photosynthetic apparatus of dark-acclimated （jip-test） and light-acclimated （light-saturation pulse method） bract and capsule wall. Compared with leaves, the oxygen evolving system of non-foliar organs had lower efifciency. The pool size of PS II electron acceptor of non-foliar organs was small, and the photochemical activity of leaves was higher than that of the bract and capsule wall. In regard to the photosystem I （PS I） electron acceptor side, the pool size of end electron acceptors of leaves was larger, and the quantum yield of electron transport from QA （PS II primary plastoquinone acceptor） further than the PS I electron acceptors of leaves was higher than that of bract and capsule wall. In all green organs, the actual quantum yield of photochemistry decreased with light. The thermal dissipation fraction of light absorbed by the PS II antennae was the highest in bract and the lowest in capsule wall relative to leaves. Compared with leaves, capsule wall was characterized by less constitutive thermal dissipation and via dissipation as lfuorescence emission. These results suggested that lower PS II photochemical activity in non-foliar organs may be result from limitations at the donor side of PS II and the acceptor sides of both photosystems.

关键词： cotton non-foliar photosynthesis chlorophyll fluorescence jip-test

Combining gas exchange and chlorophyll a fluorescence measurements to analyze the photosynthetic activity of drip-irrigated cotton under different soil water deficits

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Journal of Integrative Agriculture 2016年第6期15卷 1256-1266页

作者： LUO Hong-hai Tsimilli-michael Merope ZHANG Ya-li ZHANG Wang-feng Key Laboratory of Oasis Ecology Agriculture Xinjiang Production and Construction Group Shihezi University Shihezi 832003 P. R. China Bioenergetics Laboratory University of Geneva Jussy-Geneva CH-1254 Switzerland

Gas exchange and chlorophyll a fluorescence were measured to study the effects of soil water deficit （75, 60 and 45% of field capacity, FC） on the photosynthetic activity of drip-irrigated cotton under field conditions. At light intensities above 1 200 IJmol m-2 s-1, leaf net photosynthetic rate （mn） at 60 and 45% FC was 0.75 and 0.45 times respectively than that of 75% FC. The chlorophyll content, leaf water potential and yield decreased as soil water deficit decreased. Fiber length was significantly lower at 45% FC than at 75% FC. The actual quantum yield of the photosystem II （PSII） primary photo- chemistry and the photochemical quenching were significantly greater at 60% FC than at 75% FC. The electron transport rate and non-photochemical quenching at 45% FC were 0.91 and 1.29 times than those at 75% FC, respectively. The amplitudes of the K- and L-bands were higher at 45% FC than at 60% FC. As soil water content decreased, active PSII reaction centers per chlorophyll decreased, functional PSII antenna size increased, and energetic connectivity between PSII units decreased. Electron flow from plastoquinol to the PSI end electron acceptors was significantly lower at 45% FC than at 75% FC. Similar to the effect on leaf Po, water deficit reduced the performance index （PIABs, tot） in the dark-adapted state. These results suggest that （i） the effect of mild water deficit on photosystem activity was mainly related to processes between plastoquinol and the PSI end electron acceptors, （ii） PSI end electron acceptors were only affected at moderate water deficit, and （iii） PIABs. tota can reliably indicate the effect of water deficit on the energy supply for cotton metabolism.

关键词： cotton drought jip-test modulated fluorescence quenching analysis photosynthetic rate

Harmful algal bloom-forming dinofl agellate Prorocentrum donghaiense inhibits the growth and photosynthesis of seaweed Sargassum fusiformis embryos

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Journal of Oceanology and Limnology 2021年第6期39卷 2237-2251页

作者： Caixia WANG Min WANG Binbin CHEN Wenli QIN Lidong LIN Chuanjun DAI Hengguo YU Renhui LI Min ZHAO Zengling MA Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Dongtou Fisheries Science and Technology Research Institute Wenzhou 325700China

Harmful algal bloom(HAB)is an ecological disaster to local *** present,its impact on macrophytes has not been well *** this study,we cultivated sexually propagated embryos of S argassum fusiformis-an edible seaweed-in Prorocentrum donghaiense suspensions at different cell densities(0,0.50×10^(5),0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL)for 10 days,during which growth and photosynthetic activities of the embryos were determined,and a monocultivation was set up for *** show that the relative growth rate and photosynthetic activities of the embryos co-cultivated with *** were inhibited mostly and significantly in the cell densities of 0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL,and the inhibitory effects increased in overall with increased cell *** maximum relative electron transport rates(rETR max)and apparent photosynthetic efficiency(a)of co-cultivated embryos were all significantly lower than monocultivation ones on the 10 th ***,the photosynthetic activity detected by chlorophyll-a fluorescence transient(i.e.,Ojip),the electron transport among electron transfer accepters of PSII(photosystem II)and that from PSII to PSI(photosystem I)was restricted,which is probably responsible for the decreases of rETR max andain the co-cultivated *** addition,parts of the photosynthetic reaction centers of PSII in the co-cultivated embryos were ***,*** bloom could restrain the development and photosynthetic activities of *** embryos,reduce the seedlings stock,and eventually hinder the development of *** production industry.

关键词： embryo jip-test photosynthesis Prorocentrum donghaiense Sargassum fusiformis harmful algal bloom

Quantitative genetic analysis of chlorophyll a fluorescence parameters in maize in the field environments

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Journal of Integrative Plant Biology 2014年第7期56卷 695-708页

作者： Domagoj ?imi? Hrvoje Lepedu? Vlatka Jurkovi? Jasenka Antunovi? Vera Cesar Agricultural Institute Osijek Faculty of Humanities and Social Sciences Department of Biology Josip Juraj Strossmayer University of Osijek

Chlorophyl fluorescence transient from initial to maximum fluorescence （“P”step） throughout two intermedi-ate steps （“J”and“I”）（jip-test） is considered a reliable early quantitative indicator of stress in plants. The jip-test is particularly useful for crop plants when applied in variable field environments. The aim of the present study was to conduct a quantitative trait loci （QTL） analysis for nine jip-test parameters in maize during flowering in four field environ-ments differing in weather conditions. QTL analysis and identification of putative candidate genes might help to explain the genetic relationship between photosynthesis and different field scenarios in maize plants. The jip-test param-eters were analyzed in the intermated B73 ？ Mo17 （IBM） maize population of 205 recombinant inbred lines. A set of 2,178 molecular markers across the whole maize genome was used for QTL analysis revealing 10 significant QTLs for seven jip-test parameters, of which five were co-localized when combined＆amp;nbsp;over the four environments indicating polygenic inheritance and pleiotropy. Our results demonstrate that QTL analysis of chlorophyl fluorescence parameters was capable of detecting one pleiotropic locus on chromosome 7, coinciding with the gene gst23 that may be associated with efficient photosynthe-sis under different field scenarios.

关键词： Chlorophyll a fluorescence parameters field conditions intermated B73× Mo17 recombinant inbred lines jip-test maize (Zeamays L.) quantitative trait loci

Photosynthesis of Digitaria ciliaris during repeated soil drought and rewatering

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Research in Cold and Arid Regions 2015年第1期7卷 81-87页

作者： YaYong Luo XueYong Zhao JingHui Zhang YuLin Li XiaoAn Zuo DianChao Sun Naiman Desertification Research Station Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

The ability of psammophyte photosynthesis to withstand and recover from severe droughts is crucial for vegetation sta- bility in semi-arid sandy lands. The responses of gas exchange and chlorophyll fluorescence of an annual grass, Digitaria ciliaris, were measured through three soil drought and rewatering cycles. Results showed that the net photosynthesis rate （P,） decreased by 92%, 95%, and 63% at end of the three drought periods, respectively, water use efficiency （WUE） decreased by 67%, 54%, and 48%, while the constant intercellular CO2 concentration （Ci） increased by 1.08, 0.88, and 0.45 times. During those three cycles, the trapping probability with no dark adaptation （Fv＇/Fm＇） decreased by 55%, 51%, and 9%, the electron transport per cross section （ET0＇/CS0＇） decreased by 63%0, 42%, and 18%, and the dissipation per cross section （DI0＇/CS0＇） increased by 97%, 96%, and 21%. These results indicated that D. ciliaris was subjected to photoinhi- bition and some non-stomatal limitation of photosynthesis under drought. However, after four days of rewatering, its photosynthetic characteristics were restored to control values. This capability to recover from drought may contribute to making the plant＇s use of water as efficient as possible. Furthermore, the photosynthesis decreased more slowly in the subsequent drought cycles than in the first cycle, allowing D. ciliaris to enhance its future drought tolerance after drought hardening. Thus, it acclimatizes itself to repeated soil drought.

关键词： chlorophyll fluorescence gas exchange repeated soil drought and rewatering jip-test

不同干旱胁迫对山葡萄的光合作用和光系统II活性的影响

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植物生理学报 2014年第8期50卷 1171-1176页

作者：王振兴陈丽艾军刘迎雪何伟许培磊秦红艳赵滢中国农业科学院特产研究所长春130112 吉林农业大学长春130112

以山葡萄品种中抗性较强的‘左山一’和抗性较弱的‘双丰’品种为材料,利用气体交换分析和叶绿素荧光诱导动力学分析手段,研究了干旱胁迫对不同抗性山葡萄品种的光合作用和PSII活性的影响。结果显示,2种山葡萄叶片的净光合速率均随着干... 详细信息

以山葡萄品种中抗性较强的‘左山一’和抗性较弱的‘双丰’品种为材料,利用气体交换分析和叶绿素荧光诱导动力学分析手段,研究了干旱胁迫对不同抗性山葡萄品种的光合作用和PSII活性的影响。结果显示,2种山葡萄叶片的净光合速率均随着干旱胁迫的加重而下降,并且细胞间隙CO2浓度升高,证明非气孔限制是干旱胁迫造成山葡萄光合速率下降的主要原因。jip-test分析发现,干旱胁迫导致‘双丰’叶片相对荧光诱导动力学曲线中J点和I点相对可变荧光上升,同时出现了明显的K点,‘左山一’叶片的相对荧光诱导动力学曲线没有明显变化,说明干旱胁迫对‘双丰’叶片PSII电子供体侧和受体侧造成的伤害要显著大于对‘左山一’叶片的伤害,且干旱胁迫对‘双丰’叶片的最大光化学效率(Fv/Fm)、吸收光能为基础的光化学性能指数(PIABS)、单位面积有活性反应中心的密度(RS/CS)及单位面积用于电子传递的光能(ETo/CS)的改变幅度显著大于‘左山一’。干旱胁迫通过干扰山葡萄叶片PSII电子供体侧、受体侧以及电子传递链的功能,严重的伤害了叶片光合机构的正常功能。干旱胁迫对抗旱性较强的‘左山一’PSII活性的影响显著小于对抗旱性较弱的‘双丰’葡萄。

关键词：山葡萄光合作用 jip-test 干旱胁迫光系统II活性

软枣猕猴桃叶片光系统Ⅱ活性对不同温度的响应

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西北植物学报 2015年第2期35卷 329-334页

作者：王振兴艾军陈丽范书田何伟秦红艳赵滢中国农业科学院特产研究所长春130112 吉林农业大学园艺学院长春130112

以软枣猕猴桃“魁绿”为试验材料,利用快速叶绿素荧光诱导动力学曲线分析技术（jip-test）研究了热胁迫处理对植株叶片光系统Ⅱ活性的影响。结果显示：（1）软枣猕猴桃叶片最大光化学效率（Fv/Fm）在35～48 ℃的范围内并没有明显变化,... 详细信息

以软枣猕猴桃“魁绿”为试验材料,利用快速叶绿素荧光诱导动力学曲线分析技术（jip-test）研究了热胁迫处理对植株叶片光系统Ⅱ活性的影响。结果显示：（1）软枣猕猴桃叶片最大光化学效率（Fv/Fm）在35～48 ℃的范围内并没有明显变化,只有当温度升高到52 ℃时才显著下降。（2）随着温度升高,叶绿素荧光诱导动力学曲线中J点和I点的相对可变荧光Vj和Vi呈显著下降趋势,在52 ℃又显著升高,而K点的相对可变荧光Vk则逐渐上升;叶片捕获的激子将电子传递到电子传递链中QA-下游电子受体的概率（ψ0）随着温度升高而逐渐上升,但在52 ℃时显著下降。（3）随着热胁迫时间的延长,Vj和Vi随时间延长而升高,ψ0则下降,电子传递链受体侧受到了严重的抑制。研究表明,高温显著抑制了软枣猕猴桃叶片PSⅡ电子传递链供体侧和受体侧的活性,但PSⅡ的供体侧比受体侧对高温更加敏感;jip-test测定的相关参数能有效地评价不同温度对软枣猕猴桃光系统活性的影响。

关键词：软枣猕猴桃高温胁迫光系统 jip-test