Journal Article

Activation of Glyoxylate Cycle Enzymes in Cucumber Fruits Exposed to CO<sub>2</sub>

Yongli Yang, Hideki Murayama and Tadaaki Fukushima

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 39, issue 5, pages 533-539
Published in print May 1998 | ISSN: 0032-0781
Published online May 1998 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029401
Activation of Glyoxylate Cycle Enzymes in Cucumber Fruits Exposed to CO2

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Cucumber fruits exposed to a 60% CO2 environment for 3 d at 20°C showed a higher respiration rate, a lower respiratory quotient, and lower levels of malate, citrate + isocitrate, and glyoxylate than did control fruits. Moreover, in the CO2 treatment, fumarate and succinate increased dramatically on the first day and after the second day, respectively, while 2-oxoglutarate showed a temporary increase on the first day and a subsequent decrease. Isocitrate lyase and malate synthase activity tended to increase throughout the experimental period of the CO2 treatment. These results appear to point to a rapid operation of glyoxylate cycle due to high CO2.

Keywords: CO2; Controlled atmosphere; Cucumber; Isocitrate lyase (EC 4.1.3.1); Malate synthase (EC 4.1.3.2); Glyoxylate cycle

Journal Article.  0 words. 

Subjects: Plant Sciences and Forestry ; Biochemistry ; Molecular and Cell Biology

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