Abstract:
:Triplet state electron paramagnetic resonance (EPR) experiments have been carried out at X-band on Rb. sphaeroides R-26 reaction centers that have been reconstituted with the carotenoid, spheroidene, and exchanged with 13(2)-OH-Zn-bacteriochlorophyll a and [3-vinyl]-13(2)-OH-bacteriochlorophyll a at the monomeric, 'accessory' bacteriochlorophyll sites BA,B or with pheophytin a at the bacteriopheophytin sites HA,B. The primary donor and carotenoid triplet state EPR signals in the temperature range 95-150 K are compared and contrasted with those from native Rb. sphaeroides wild type and Rb. sphaeroides R-26 reaction centers reconstituted with spheroidene. The temperature dependencies of the EPR signals are strikingly different for the various samples. The data prove that triplet energy transfer from the primary donor to the carotenoid is mediated by the monomeric, BChlB molecule. Furthermore, the data show that triplet energy transfer from the primary donor to the carotenoid is an activated process, the efficiency of which correlates with the estimated triplet state energies of the modified pigments.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Frank HA,Chynwat V,Hartwich G,Meyer M,Katheder I,Scheer Hdoi
10.1007/BF00032823subject
Has Abstractpub_date
1993-09-01 00:00:00pages
193-203issue
3eissn
0166-8595issn
1573-5079journal_volume
37pub_type
杂志文章abstract::Recently, a number of techniques, some of them relatively new and many often used in combination, have given a clearer picture of the dynamic role of electron transport in Photosystem I of photosynthesis and of coupled cyclic photophosphorylation. For example, the photoacoustic technique has detected cyclic electron t...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00033035
更新日期:1993-06-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9244-3
更新日期:2008-02-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00015559
更新日期:1995-09-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1010779327960
更新日期:2000-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00049537
更新日期:1992-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-014-0003-y
更新日期:2014-09-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00032919
更新日期:1985-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00054986
更新日期:1988-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type:
doi:10.1007/s11120-013-9847-9
更新日期:2013-07-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-014-0017-5
更新日期:2014-10-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00055064
更新日期:1987-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-013-9928-9
更新日期:2013-11-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00029400
更新日期:1987-09-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9259-9
更新日期:2008-02-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-007-9204-y
更新日期:2007-05-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-020-00725-y
更新日期:2020-04-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-005-9004-1
更新日期:2006-03-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00047079
更新日期:1990-11-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-011-9682-9
更新日期:2011-09-01 00:00:00
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journal_title:Photosynthesis research
pub_type:
doi:10.1007/s11120-013-9901-7
更新日期:2013-12-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-013-9936-9
更新日期:2013-10-12 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-020-00754-7
更新日期:2020-06-01 00:00:00
abstract::Detached wheat leaves were illuminated in air until a steady rate of photosynthesis was established. Then the gas was changed to 1% O2, 99% N2 and after 2.5 h further illumination the capacity of the leaves for photosynthesis in air was decreased to approximately 50%. Measurement of RuBP carboxylase activity in extrac...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00040708
更新日期:1982-06-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9224-7
更新日期:2007-10-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF02187123
更新日期:1994-11-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-018-0492-1
更新日期:2018-08-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9277-7
更新日期:2008-02-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/B:PRES.0000030428.36950.43
更新日期:2004-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/B:PRES.0000011919.35309.5e
更新日期:2004-01-01 00:00:00
abstract::Chlorophyll fluorescence imaging has been used to analyse the response elicited in Phaseolus vulgaris after inoculation with Pseudomonas syringae pv. phaseolicola 1448A (compatible interaction) and P. syringae pv. tomato DC3000 (incompatible interaction). With the aim of modulating timing of symptom development, diffe...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9278-6
更新日期:2008-04-01 00:00:00