The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua
Abstract Saxifraga cernua , a perennial herb distributed throughout the arctic and subarctic regions, shows high levels of dark respiration. The amount of respiration exhibited by leaves and whole plants at any temperature is influenced by the pretreatment temperature. Plants grown at 10°C typically...
Published in: | Plant, Cell and Environment |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1987
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-3040.1987.tb01612.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1987.tb01612.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1987.tb01612.x |
id |
crwiley:10.1111/j.1365-3040.1987.tb01612.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-3040.1987.tb01612.x 2024-06-02T08:01:44+00:00 The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua McNULTY, AMY K. CUMMINS, W. R. 1987 http://dx.doi.org/10.1111/j.1365-3040.1987.tb01612.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1987.tb01612.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1987.tb01612.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Plant, Cell & Environment volume 10, issue 4, page 319-325 ISSN 0140-7791 1365-3040 journal-article 1987 crwiley https://doi.org/10.1111/j.1365-3040.1987.tb01612.x 2024-05-03T10:55:57Z Abstract Saxifraga cernua , a perennial herb distributed throughout the arctic and subarctic regions, shows high levels of dark respiration. The amount of respiration exhibited by leaves and whole plants at any temperature is influenced by the pretreatment temperature. Plants grown at 10°C typically show higher dark respiration rates than plants grown at 20°C. The levels of alternative‐pathway respiration (or cyanide‐insensitive respiration) in leaves of S. cernua grown at high and low temperatures were assessed by treating leaf discs with 0.25 mol m −3 salicylhydroxamic acid during measurements of oxygen consumption. Alternative pathway respiration accounted for up to 75% of the total respiration. Tissues from 20°C‐grown plants yielded a Q 10 of 3.37 for normal respiration, and of 0.97 for alternative‐pathway respiration. Tissues from 10°C‐grown plants yielded a Q 10 of 2.55 for normal respiration, and of 0.79 for alternative‐pathway respiration. The alternative pathway does not appear to be as temperature sensitive as the normal cytochrome pathway. A simple energy model was used to predict the temperature gain expected from these high rates of alternative‐pathway respiration. The model shows that less than 0.02°C can be gained by leaves experiencing these high respiration rates. Article in Journal/Newspaper Arctic Saxifraga cernua Subarctic Wiley Online Library Arctic Plant, Cell and Environment 10 4 319 325 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Saxifraga cernua , a perennial herb distributed throughout the arctic and subarctic regions, shows high levels of dark respiration. The amount of respiration exhibited by leaves and whole plants at any temperature is influenced by the pretreatment temperature. Plants grown at 10°C typically show higher dark respiration rates than plants grown at 20°C. The levels of alternative‐pathway respiration (or cyanide‐insensitive respiration) in leaves of S. cernua grown at high and low temperatures were assessed by treating leaf discs with 0.25 mol m −3 salicylhydroxamic acid during measurements of oxygen consumption. Alternative pathway respiration accounted for up to 75% of the total respiration. Tissues from 20°C‐grown plants yielded a Q 10 of 3.37 for normal respiration, and of 0.97 for alternative‐pathway respiration. Tissues from 10°C‐grown plants yielded a Q 10 of 2.55 for normal respiration, and of 0.79 for alternative‐pathway respiration. The alternative pathway does not appear to be as temperature sensitive as the normal cytochrome pathway. A simple energy model was used to predict the temperature gain expected from these high rates of alternative‐pathway respiration. The model shows that less than 0.02°C can be gained by leaves experiencing these high respiration rates. |
format |
Article in Journal/Newspaper |
author |
McNULTY, AMY K. CUMMINS, W. R. |
spellingShingle |
McNULTY, AMY K. CUMMINS, W. R. The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
author_facet |
McNULTY, AMY K. CUMMINS, W. R. |
author_sort |
McNULTY, AMY K. |
title |
The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
title_short |
The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
title_full |
The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
title_fullStr |
The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
title_full_unstemmed |
The relationship between respiration and temperature in leaves of the arctic plant Saxifraga cernua |
title_sort |
relationship between respiration and temperature in leaves of the arctic plant saxifraga cernua |
publisher |
Wiley |
publishDate |
1987 |
url |
http://dx.doi.org/10.1111/j.1365-3040.1987.tb01612.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1987.tb01612.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1987.tb01612.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Saxifraga cernua Subarctic |
genre_facet |
Arctic Saxifraga cernua Subarctic |
op_source |
Plant, Cell & Environment volume 10, issue 4, page 319-325 ISSN 0140-7791 1365-3040 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3040.1987.tb01612.x |
container_title |
Plant, Cell and Environment |
container_volume |
10 |
container_issue |
4 |
container_start_page |
319 |
op_container_end_page |
325 |
_version_ |
1800746128710303744 |