Journal Article

The Effects of Increased Atmospheric Carbon Dioxide on Growth, Carbohydrates, and Photosynthesis in Radish, <i>Raphanus sativus</i>

Hideaki Usuda and Kousuke Shimogawara

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 39, issue 1, pages 1-7
Published in print January 1998 | ISSN: 0032-0781
Published online January 1998 | e-ISSN: 1471-9053 | DOI: https://dx.doi.org/10.1093/oxfordjournals.pcp.a029280
The Effects of Increased Atmospheric Carbon Dioxide on Growth, Carbohydrates, and Photosynthesis in Radish, Raphanus sativus

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

The effects of sink capacity on the regulation of the acclimation of photosynthetic capacity to elevated levels of carbon dioxide are important from a global perspective. We investigated the effeocts of elevated (750 μmol mol−1) and ambient (350 μmol mol−1) atmospheric CO2 on growth, carbohydrate levels, and photosynthesis in radish seedlings from 15 to 46 d after planting. In radish, a major sink is the storage root, and its thickening is initiated early. Elevated CO2 increased the accumulation of dry matter by 111% but had no effect on the acclimation of the rate of photosynthesis or on the levels of carbohydrates in leaves at dawn. Elevated CO2 increased the dry weight in storage roots by 105% by 46 d after planting, apparently enhancing the sink capacity. This enhanced capacity seemed to be responsible for absorption of elevated levels of photosynthate and to result in the absence of any over-accumulation of carbohydrates in source leaves and the absence of negative acclimation of photosynthetic capacity at the elevated level of CO2.

Keywords: Elevated CO2; Photosynthesis; Radish; Source-sink

Journal Article.  0 words. 

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

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.