NDLI: Antioxidant responses to waterlogging stress and subsequent recovery in two Kentucky bluegrass (Poa pratensis L.) cultivars

Content Provider	Springer Nature Link
Author	Puyang, Xuehua An, Mengying Xu, Lixin Han, Liebao Zhang, Xunzhong
Copyright Year	2015
Abstract	The antioxidant enzyme activities and gene expressions in leaves of Kentucky bluegrass (Poa pratensis L.) were investigated in response to waterlogging stress and subsequent drainage. Two cultivars contrasting in waterlogging tolerance, ‘Moonlight’ (waterlogging-tolerant) and ‘Kenblue’ (waterlogging-sensitive), were subjected to waterlogging for 28 days (d) followed by 7 d of drainage recovery. Waterlogging stress increased malondialdehyde (MDA), superoxide anion (O 2 ·− ) and hydrogen peroxide (H$_{2}$O$_{2}$) in both cultivars. Moonlight exhibited greater turfgrass quality (TQ) rating and chlorophyll (Chl) content than Kenblue during the waterlogging and drainage period. After 7 d of drainage, all physiological parameters returned to the control level for Moonlight, but not for Kenblue. Higher activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) as well as more abundance of isozymes were found in Moonlight relative to Kenblue under waterlogging stress. Moonlight showed higher SOD and APX activity and isozymes intensity when compared with Kenblue during the drainage period. The transcript levels of chloroplastic Cu/ZnSOD (Chl Cu/ZnSOD), MnSOD, FeSOD, POD and cytosolic APX (Cyt APX) were higher in Moonlight relative to Kenblue under waterlogging conditions, and higher transcript activities of Chl Cu/ZnSOD, FeSOD and Cyt APX were observed in Moonlight than in Kenblue at 7 d of drainage. The results of this study indicate that higher SOD and APX activity, isozymes intensity and gene expression level in Moonlight relative to Kenblue may play crucial roles in Kentucky bluegrass tolerance to waterlogging stress.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	37
Issue Number	10
e-ISSN	18611664
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-09-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Kentucky bluegrass Waterlogging Antioxidant enzyme Isozymes Gene expression Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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