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Publication Type J
Authors Li, SC; Jin, H; Zhang, Q
Author Full Name Li, Shucheng; Jin, Han; Zhang, Qiang
Title The Effect of Exogenous Spermidine Concentration on Polyamine Metabolism and Salt Tolerance in Zoysiagrass (Zoysia japonica Steud) Subjected to Short-Term Salinity Stress
Source FRONTIERS IN PLANT SCIENCE
Language English
Document Type Article
Author Keywords Zoysiagrass; polyamine metabolism; salinity stress; exogenous spermidine; antioxidant enzyme
Keywords Plus ARGININE DECARBOXYLASE; OXIDATIVE DAMAGE; L. CULTIVARS; INDICA RICE; SEEDLINGS; GROWTH; EXPRESSION; PUTRESCINE; PLANTS; LEAVES
Abstract Salt stress, particularly short-term salt stress, is among the most serious abiotic factors limiting plant survival and growth in China. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to salt stress. The present study utilized two zoysiagrass cultivars commonly grown in China that exhibit either sensitive (cv. Z081) or tolerant (cv. Z057) adaptation capacity to salt stress. The two cultivars were subjected to 200 mM salt stress and treated with different exogenous Spd concentrations for 8 days. Polyamine [diamine putrescine (Put), tetraamine spermine (Spm), and Spd], H2O2 and malondialdehyde (MDA) contents and polyamine metabolic (ADC, ODC, SAMDC, PAO, and DAO) and antioxidant (superoxide dismutase, catalase, and peroxidase) enzyme activities were measured. The results showed that salt stress induced increases in Spd and Spm contents and ornithine decarboxylase (ODC), S-adenosylmethionine decarboxylase (SAMDC), and diamine oxidase (DAO) activities in both cultivars. Exogenous Spd application did not alter polyamine contents via regulation of polyamine-degrading enzymes, and an increase in polyamine biosynthetic enzyme levels was observed during the experiment. Increasing the concentration of exogenous Spd resulted in a tendency of the Spd and Spm contents and ODC, SAMDC, DAO, and antioxidant enzyme activities to first increase and then decrease in both cultivars. H2O2 and MDA levels significantly decreased in both cultivars treated with Spd. Additionally, in both cultivars, positive correlations between polyamine biosynthetic enzymes (ADC, SAMDC), DAO, and antioxidant enzymes (SOD, POD, CAT), but negative correlations with H2O2 and MDA levels, and the Spd + Spm content were observed with an increase in the concentration of exogenous Spd.
Author Address [Li, Shucheng; Jin, Han; Zhang, Qiang] China Agr Univ, Dept Grassland Sci, Coll Anim Sci & Technol, Beijing, Peoples R China
Reprint Address Li, SC (reprint author), China Agr Univ, Dept Grassland Sci, Coll Anim Sci & Technol, Beijing, Peoples R China.
E-mail Address lishucheng12387@126.com
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Cited Reference Count 45
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher FRONTIERS MEDIA SA
Publisher City LAUSANNE
Publisher Address PO BOX 110, EPFL INNOVATION PARK, BUILDING I, LAUSANNE, 1015, SWITZERLAND
ISSN 1664-462X
29-Character Source Abbreviation FRONT PLANT SCI
ISO Source Abbreviation Front. Plant Sci.
Publication Date AUG 17
Year Published 2016
Volume 7
Article Number 1221
Digital Object Identifier (DOI) 10.3389/fpls.2016.01221
Page Count 13
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number DT4PZ
Unique Article Identifier WOS:000381464500001
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