DOI: 10.1111/j.1399-3054.1980.tb03311.x. Preferential distribution of excitation energy into photosystem I of desiccated samples of the lichen Cladonia impexa and the isolated lichen‐alga Trebouxia pyriformis

Preferential distribution of excitation energy into photosystem I of desiccated samples of the lichen Cladonia impexa and the isolated lichen‐alga Trebouxia pyriformis

10.1111/j.1399-3054.1980.tb03311.x

Crossref journal-article

Wiley

Physiologia Plantarum (311)

Abstract

Abstract The effect of desiccation on distribution of excitation energy between the two photosystems has been studied in the lichen Cladonia impexa Harm., in the green alga Trebouxia pyriformis Archibald, isolated from Cladonia squamosa; and in the non‐lichen green alga Scenedesmus obliquus, strain D3. The method used was to compare the low temperature fluorescence emission of samples equilibrated with air with different humidity prior to freezing in liquid nitrogen.Desiccation of Cladonia and Trebouxia caused a pronounced increase of the height of the far red fluorescence emission band, F 715, over the short wave bands, F685 and F697; the ratio between the two short wave bands remained essentially constant. Upon rewetting, these species regained normal fluorescence emission properties, indicating that they are desiccation‐tolerant. Scenedesmus, which was used as a desiccation intolerant species, also showed an increase of the far red fluorescence band over the two short wave bands upon desiccation, but the original fluorescence spectrum was not restored upon rewetting.These results are interpreted as showing that desiccation of tolerant species such as Cladonia and Trebouxia causes a preferential energy distribution into photosystem I. We tentatively believe that desiccation induces conformational changes within the chloroplast thylakoids, thereby controlling distribution of energy between the two photosystems. Furthermore, this change in energy distribution may be of ecological significance as the mechanism by which desiccated lichens or algae avoid photo‐dynamic destruction of the photosynthetic apparatus when photosynthesis is inhibited under dry conditions. By a preferential distribution of absorbed energy into photosystem I, the organisms avoid the formation of strong, harmful oxidants in photosystem II when photosynthesis is inhibited. It is suggested that β‐carotene associated with the far red‐absorbing chlorophyll a fraction of the reaction center antenna of photosystem I is the final sink for excess excitation energy in dry, desiccation‐tolerant lichens and algae.

Bibliography

SIGFRIDSSON, B., & OQUIST, G. (1980). Preferential distribution of excitation energy into photosystem I of desiccated samples of the lichen Cladonia impexa and the isolated lichenâalga Trebouxia pyriformis. Physiologia Plantarum, 49(4), 329â335. Portico.

Authors 2

BJORN SIGFRIDSSON (first)
GUNNAR OQUIST (additional)

References 22 Referenced 20

{'key': 'e_1_2_2_2_1', 'first-page': '111', 'volume-title': 'Current Topics in Bioenergetics', 'author': 'Arntzen C. J.', 'year': '1978'} / Current Topics in Bioenergetics by Arntzen C. J. (1978)
10.1007/BF00385623
{'key': 'e_1_2_2_4_1', 'first-page': '130', 'volume-title': 'Methods in Enzymology', 'author': 'Bishop N. I.', 'year': '1971'} / Methods in Enzymology by Bishop N. I. (1971)
10.1111/j.1399-3054.1980.tb03338.x
10.1104/pp.34.3.305
10.1146/annurev.pp.29.060178.002021
{'key': 'e_1_2_2_8_1', 'first-page': '184', 'article-title': 'The photochemical reactions of photosynthesis in an alga exposed to extreme conditions', 'volume': '72', 'author': 'Fork D. C.', 'year': '1973', 'journal-title': 'Carnegie Inst. Yearbook'} / Carnegie Inst. Yearbook / The photochemical reactions of photosynthesis in an alga exposed to extreme conditions by Fork D. C. (1973)
{'key': 'e_1_2_2_9_1', 'first-page': '261', 'article-title': 'Studies on the Hill reaction of membrane fragments of blue‐green algae IV. Carotenoid photobleaching induced by photosystem II action', 'volume': '14', 'author': 'Fujita Y.', 'year': '1973', 'journal-title': 'Plant Cell Physiol.'} / Plant Cell Physiol. / Studies on the Hill reaction of membrane fragments of blue‐green algae IV. Carotenoid photobleaching induced by photosystem II action by Fujita Y. (1973)
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{'key': 'e_1_2_2_11_1', 'first-page': '1', 'volume-title': 'Photo‐physiology', 'author': 'Govindjee', 'year': '1971'} / Photo‐physiology by Govindjee (1971)
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10.1111/j.1399-3054.1974.tb03677.x
{'key': 'e_1_2_2_17_1', 'article-title': 'On the role of β‐carotene in the reaction center chlorophyll a antenna of photosystem I', 'author': 'Oquist G.', 'year': '1980', 'journal-title': 'ibid.'} / ibid. / On the role of β‐carotene in the reaction center chlorophyll a antenna of photosystem I by Oquist G. (1980)
10.1016/0022-5193(73)90170-7
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{'key': 'e_1_2_2_21_1', 'first-page': '625', 'article-title': 'Carotenoid photobleaching induced by the action of photosynthetic reaction center II: DCMU‐sensitivity', 'volume': '18', 'author': 'Suzuki R.', 'year': '1977', 'journal-title': 'Plant Cell Physiol.'} / Plant Cell Physiol. / Carotenoid photobleaching induced by the action of photosynthetic reaction center II: DCMU‐sensitivity by Suzuki R. (1977)
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10.1139/b78-334

Dates

Type	When
Created	19 years, 4 months ago (April 30, 2006, 4:35 p.m.)
Deposited	1 year, 9 months ago (Nov. 10, 2023, 10:13 a.m.)
Indexed	2 months, 3 weeks ago (June 10, 2025, 8:06 p.m.)
Issued	45 years, 1 month ago (Aug. 1, 1980)
Published	45 years, 1 month ago (Aug. 1, 1980)
Published Online	19 years, 4 months ago (April 28, 2006)
Published Print	45 years, 1 month ago (Aug. 1, 1980)

Funders 0

None

BibTeX

@article{SIGFRIDSSON_1980, title={Preferential distribution of excitation energy into photosystem I of desiccated samples of the lichen Cladonia impexa and the isolated lichen‐alga Trebouxia pyriformis}, volume={49}, ISSN={1399-3054}, url={http://dx.doi.org/10.1111/j.1399-3054.1980.tb03311.x}, DOI={10.1111/j.1399-3054.1980.tb03311.x}, number={4}, journal={Physiologia Plantarum}, publisher={Wiley}, author={SIGFRIDSSON, BJORN and OQUIST, GUNNAR}, year={1980}, month=aug, pages={329–335} }

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