Cover Image

Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients

Copper deficiency in soybeans does not readily exhibit visible symptoms. However, it has a profound effect on the activities of polyphenol oxidase (PPO, O-diphenol : oxygen oxidoreductase, E.C.1.10.3.1) that is present in the young leaf extracts. Polyphenol oxidase activity was completely absent in...

Full description

Saved in:
Bibliographic Details
Main Authors: Marziah, Mahmood, Lam, Chee H.
Format: Article
Published: Informa UK Limited 1987
Online Access:http://psasir.upm.edu.my/id/eprint/115367/
https://www.tandfonline.com/doi/abs/10.1080/01904168709363759
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.115367
record_format eprints
spelling my.upm.eprints.1153672025-03-03T08:09:33Z http://psasir.upm.edu.my/id/eprint/115367/ Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients Marziah, Mahmood Lam, Chee H. Copper deficiency in soybeans does not readily exhibit visible symptoms. However, it has a profound effect on the activities of polyphenol oxidase (PPO, O-diphenol : oxygen oxidoreductase, E.C.1.10.3.1) that is present in the young leaf extracts. Polyphenol oxidase activity was completely absent in minus copper plants grown in solution culture in the glasshouse. Similarly, copper-deficient plants grown in peat soils had very low PPO activity. The enzyme, on the other hand, increased in activity as the supply of cooper to the plants was increased. Deficiencies in other micronutrients (B, Co, Fe, Mn, Mo, Zn) did not significantly lower the enzyme activity. Since very little or no activity was detected in leaf extracts from all copper-deficient treatments, this indicates that the enzyme may be used to diagnose Cu deficiency in soybean. Informa UK Limited 1987 Article PeerReviewed Marziah, Mahmood and Lam, Chee H. (1987) Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients. Journal of Plant Nutrition, 10 (9). pp. 2089-2094. ISSN 0190-4167 https://www.tandfonline.com/doi/abs/10.1080/01904168709363759 10.1080/01904168709363759
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Copper deficiency in soybeans does not readily exhibit visible symptoms. However, it has a profound effect on the activities of polyphenol oxidase (PPO, O-diphenol : oxygen oxidoreductase, E.C.1.10.3.1) that is present in the young leaf extracts. Polyphenol oxidase activity was completely absent in minus copper plants grown in solution culture in the glasshouse. Similarly, copper-deficient plants grown in peat soils had very low PPO activity. The enzyme, on the other hand, increased in activity as the supply of cooper to the plants was increased. Deficiencies in other micronutrients (B, Co, Fe, Mn, Mo, Zn) did not significantly lower the enzyme activity. Since very little or no activity was detected in leaf extracts from all copper-deficient treatments, this indicates that the enzyme may be used to diagnose Cu deficiency in soybean.
format Article
author Marziah, Mahmood
Lam, Chee H.
spellingShingle Marziah, Mahmood
Lam, Chee H.
Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
author_facet Marziah, Mahmood
Lam, Chee H.
author_sort Marziah, Mahmood
title Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
title_short Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
title_full Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
title_fullStr Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
title_full_unstemmed Polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
title_sort polyphenol oxidase from soybeans (glycine max v. palmetto) and its respoftse to copper and other micronutrients
publisher Informa UK Limited
publishDate 1987
url http://psasir.upm.edu.my/id/eprint/115367/
https://www.tandfonline.com/doi/abs/10.1080/01904168709363759
_version_ 1825810738433753088
score 13.244413

Similar Items