Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants
ABSTRACT Chloroplasts of many alpine plants have the ability to form marked, stroma‐filled protrusions that do not contain thylakoids. Effects of temperature and light intensity on the frequency of chloroplasts with such protrusions in leaf mesophyll cells of nine different alpine plant species ( Ca...
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crwiley:10.1111/j.1365-3040.2007.01707.x 2024-06-23T07:56:18+00:00 Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants BUCHNER, OTHMAR HOLZINGER, ANDREAS LÜTZ, CORNELIUS 2007 http://dx.doi.org/10.1111/j.1365-3040.2007.01707.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.2007.01707.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.2007.01707.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Plant, Cell & Environment volume 30, issue 11, page 1347-1356 ISSN 0140-7791 1365-3040 journal-article 2007 crwiley https://doi.org/10.1111/j.1365-3040.2007.01707.x 2024-06-13T04:25:27Z ABSTRACT Chloroplasts of many alpine plants have the ability to form marked, stroma‐filled protrusions that do not contain thylakoids. Effects of temperature and light intensity on the frequency of chloroplasts with such protrusions in leaf mesophyll cells of nine different alpine plant species ( Carex curvula All., Leontodon helveticus Merat., Oxyria digyna (L.) Hill., Poa alpina L. ssp. vivipara, Polygonum viviparum L., Ranunculus glacialis L., Ranunculus alpestris L., Silene acaulis L. and Soldanella pusilla Baumg.) covering seven different families were studied. Leaves were exposed to either darkness and a stepwise increase in temperature (10–38 °C) or to different light intensities (500 and 2000 µ mol photons m −2 s −1 ) and a constant temperature of 10 or 30 °C in a special temperature‐regulated chamber. A chloroplast protrusions index characterising the relative proportion of chloroplasts with protrusions was defined. Seven of the nine species showed a significant increase in chloroplast protrusions when temperature was elevated to over 20 °C. In contrast, the light level did not generally affect the abundance of chloroplasts with protrusions. Chloroplast protrusions lead to a dynamic enlargement of the chloroplast surface area. They do not appear to be directly connected to a distinct photosystem II (PSII) ( F v / F m ) status and thus seem to be involved in secondary, not primary, photosynthetic processes. Article in Journal/Newspaper Poa alpina Polygonum viviparum Ranunculus glacialis Silene acaulis Wiley Online Library Plant, Cell & Environment 30 11 1347 1356 |
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Wiley Online Library |
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English |
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ABSTRACT Chloroplasts of many alpine plants have the ability to form marked, stroma‐filled protrusions that do not contain thylakoids. Effects of temperature and light intensity on the frequency of chloroplasts with such protrusions in leaf mesophyll cells of nine different alpine plant species ( Carex curvula All., Leontodon helveticus Merat., Oxyria digyna (L.) Hill., Poa alpina L. ssp. vivipara, Polygonum viviparum L., Ranunculus glacialis L., Ranunculus alpestris L., Silene acaulis L. and Soldanella pusilla Baumg.) covering seven different families were studied. Leaves were exposed to either darkness and a stepwise increase in temperature (10–38 °C) or to different light intensities (500 and 2000 µ mol photons m −2 s −1 ) and a constant temperature of 10 or 30 °C in a special temperature‐regulated chamber. A chloroplast protrusions index characterising the relative proportion of chloroplasts with protrusions was defined. Seven of the nine species showed a significant increase in chloroplast protrusions when temperature was elevated to over 20 °C. In contrast, the light level did not generally affect the abundance of chloroplasts with protrusions. Chloroplast protrusions lead to a dynamic enlargement of the chloroplast surface area. They do not appear to be directly connected to a distinct photosystem II (PSII) ( F v / F m ) status and thus seem to be involved in secondary, not primary, photosynthetic processes. |
format |
Article in Journal/Newspaper |
author |
BUCHNER, OTHMAR HOLZINGER, ANDREAS LÜTZ, CORNELIUS |
spellingShingle |
BUCHNER, OTHMAR HOLZINGER, ANDREAS LÜTZ, CORNELIUS Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
author_facet |
BUCHNER, OTHMAR HOLZINGER, ANDREAS LÜTZ, CORNELIUS |
author_sort |
BUCHNER, OTHMAR |
title |
Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
title_short |
Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
title_full |
Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
title_fullStr |
Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
title_full_unstemmed |
Effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
title_sort |
effects of temperature and light on the formation of chloroplast protrusions in leaf mesophyll cells of high alpine plants |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1365-3040.2007.01707.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.2007.01707.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.2007.01707.x |
genre |
Poa alpina Polygonum viviparum Ranunculus glacialis Silene acaulis |
genre_facet |
Poa alpina Polygonum viviparum Ranunculus glacialis Silene acaulis |
op_source |
Plant, Cell & Environment volume 30, issue 11, page 1347-1356 ISSN 0140-7791 1365-3040 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3040.2007.01707.x |
container_title |
Plant, Cell & Environment |
container_volume |
30 |
container_issue |
11 |
container_start_page |
1347 |
op_container_end_page |
1356 |
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1802649305148817408 |