|Table of Contents|

Effects of Exogenous Calcium on Respiration and Metabolism Between Two Different Resistant Paeonia suffruticosa Varieties Under Waterlogging Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年10
Page:
80-85
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Calcium on Respiration and Metabolism Between Two Different Resistant Paeonia suffruticosa Varieties Under Waterlogging Stress
Author(s):
FAN Guohua
(Henan Light Industry Career Academy,Zhengzhou,Henan 451191)
Keywords:
Paeonia suffruticosa; waterlogging stress; exogenous calcium; respiratory metabolism
PACS:
-
DOI:
10.11937/bfyy.20183200
Abstract:
Two peony (Paeonia suffruticosa) varieties ‘Luoyanghong’（waterlogging-resistant） and ‘Huhong’ （no-waterlogging-resistant） were used as materials in this research.Two peony varieties′ respiratory metabolism of exogenous calcium was studied under waterlogging stress in order to provide theoretical basis and practical support for improving peony resistance to waterlogging.The results showed that the application of CaCl2 could effectively reduced the activities of LDH (lactate dehydrogenase),PDC (pyruvate decarboxylase),and the contents of ethanol,acetaldehyde in peony leaves,and increased ADH (ethanol dehydrogenase),MDH (malic dehydrogenase),G-6-PDH (glucose-6-phosphate dehydrogenase) activities,pyruvate content.Compared with the control group,the LDH activity in leaves of ‘Luoyanghong’ and ‘Huhong’ decreased significantly.At the 8th day,the maximum decrease was 37.7% and 15.5%,respectively.The maximum decline of PDC activity appeared on the 16th,which decreased by 25% and 38.9% respectively.The maximum activity of ADH in leaves of two peony varieties increased by 27.3%，74.0% respectively.The growth rate of G-6-PDH in ‘Luoyanghong’ was significantly lower than that in ‘Huhong’,but the overall activity was higher than that in ‘Huhong’.CaCl2 could significantly alleviate the downward trend of MDH,reduce the contents of ethanol and acetaldehyde and increase the content of pyruvate in the leaves of two peony varieties,but there were significant differences in pyruvate metabolism between the two varieties.The conversion and conversion of pyruvate in ‘Luoyanghong’ under anaerobic metabolism were better than that in ‘Huhong’.The results showed that CaCl2 could significantly improve the respiration metabolism of peony under waterlogging and alleviate the damage caused by waterlogging stress.The ‘Luoyanghong’ with stronger resistance was stronger than ‘Huhong’ with weaker resistance.

References:

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Last Update: 2019-06-27