Plants at high altitude exhibit higher component of alternative respiration
IR@IHBT: CSIR-Institute of Himalayan Bioresource Technology, Palampur
View Archive Info| Field | Value | |
| Title |
Plants at high altitude exhibit higher component of
alternative respiration
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| Creator |
Kumar, Neeraj
Vyas, D Kumar , Sanjay |
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| Subject |
Plant Biotechnology
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| Description |
Total respiration, capacities of cytochrome (CytR) and alternative respiration (AR)
were studied in two varieties of barley (Horedum vulgare) and wheat (Triticum
aestivum) each and one variety of pea (Pisum sativum) at low (Palampur; 1300 m)
and high altitudes (Kibber; 4200 m). Similar studies were carried out in naturally
growing Rumex nepalensis and Trifoilum repenses at Palampur, Palchan (2250 m) and
Marhi (3250 m). All the plants species exhibited lower CytR but significantly higher
AR capacity at high altitude (HA) (72–1117% higher) as compared to those at low
altitude (LA). Glycolytic product, pyruvate and tricarboxylic acid cycle intermediate,
citrate increased with increase in altitude. While the role of these metabolites
in relation to HA biology is discussed, significantly higher AR at HA is proposed to be
an adaptive mechanism against the metabolic perturbations wherein it might act to
lower reactive oxygen species and also provides metabolic homeostasis to plants
under the environment of HA.
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| Date |
2007
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://ihbt.csircentral.net/239/1/physio.pdf
Kumar, Neeraj and Vyas, D and Kumar , Sanjay (2007) Plants at high altitude exhibit higher component of alternative respiration. Journal of Plant Physiology, 164. pp. 31-38. |
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| Relation |
http://ihbt.csircentral.net/239/
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