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Effect of Manganese Stress on Activities of Enzymes Involved in Nitrogen Metabolism of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年03期
Page:
432-435
Research Field:
Publishing date:

Info

Title:
Effect of Manganese Stress on Activities of Enzymes Involved in Nitrogen Metabolism of Soybean
Author(s):
JIN Xi-jun;  QU Chun-yuan;  ZHAO Yun-na;  LI Wen-xia;  ZHANG Yu-xian
College of Agronomy, HeilongjiangBayi Agricultural University, Daqing 163319, China
Keywords:
Manganese stress;  Soybean;  GS;  GOGAT;  GDH
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2015.03.0432
Abstract:
Soybean was cultivated with sand culture method, and optimal Mn concentration was used as control, and 4 manganese stress treatments including 2 manganese deficiency treatments(including serious stress and light stress which were 1/25 and 1/5 of optimal manganese concentration respectively, expressed by S1 and S2) and 2 excess stress treatments (including serious stress and light stress which were 5 and 25 times of optimal Mn concentration respectively, expressed by S3 and S4) were set to study the effect of manganese stress on activities of enzymes involved in nitrogen metabolism.The results showed that: activities of GS and GOGAT in leaf were inhibited by manganese deficiency stress in different degree, but promoted by manganese excess stress.Activities of GS of root was not affected by manganese deficiency stress(S1 and S2), but inhibited by manganese excess stress(S3 and S4). All Manganese stress significantly inhibited the activities of GOGAT in root, but had no effect on the activities of GS and GOGAT in stem. Activities of GDH in leaf were promoted by serious manganese stress(S1 and S4), while inhibited by light manganese stress(S2 and S3). All manganese stress inhibited the activities of GDH in stem and root.In conclusion, the activities of GS, GOGAT, GDH in leaves, stems, roots were all influenced by manganese stress in different form because of different metabolic function and composition of isoenzymes in different organs, which lead the change of nitrogen metabolic state.

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Last Update: 2015-07-15