Citation
Krishnakumar R., . and Annamalainathan K., . and Jacob J., . Tapping-induced changes in respiratory metabolism ATP production and reactive oxygen species scavenging in Hevea. pp. 245-254. ISSN 1511-1768
Abstract
Rate of dark respiration was measured in the soft bark tissues of untapped and tapped trees of Hevea brasiliensis. The respiration rate increased after tapping and decreased when the trees were given lapping rest. Concomitant with increase in respiration tapped trees also showed increased activity of reactive oxygen species scavenging enzymes such as superoxide dismutase catalase and peroxidase in the soft bark tissues. Tapping significantly increased the rate of cyanide resistant alternative respiration. The latex (C-serum) of tapped trees contained a high amount of ATP indicating that the metabolically activated tapped trees produced large amounts of ATP in the serum and the excess ATP molecules were lost through the serum. This excess loss of ATP and enhanced alternative respiration may partially explain the tapping induced loss of shoot biomass which was not reflected in the dry rubber yield.
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Abstract
Rate of dark respiration was measured in the soft bark tissues of untapped and tapped trees of Hevea brasiliensis. The respiration rate increased after tapping and decreased when the trees were given lapping rest. Concomitant with increase in respiration tapped trees also showed increased activity of reactive oxygen species scavenging enzymes such as superoxide dismutase catalase and peroxidase in the soft bark tissues. Tapping significantly increased the rate of cyanide resistant alternative respiration. The latex (C-serum) of tapped trees contained a high amount of ATP indicating that the metabolically activated tapped trees produced large amounts of ATP in the serum and the excess ATP molecules were lost through the serum. This excess loss of ATP and enhanced alternative respiration may partially explain the tapping induced loss of shoot biomass which was not reflected in the dry rubber yield.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hevea brasiliensis |
| AGROVOC Term: | Tapping |
| AGROVOC Term: | Respiratory metabolism |
| AGROVOC Term: | Oxygen |
| AGROVOC Term: | Ribosomes |
| AGROVOC Term: | Latex |
| AGROVOC Term: | Enzymes |
| AGROVOC Term: | Superoxide dismutase |
| AGROVOC Term: | Catalase |
| AGROVOC Term: | Isoprene |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/23202 |
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