The effect of cobalt stress on growth and physiological traits and its association with cobalt accumulation in barley genotypes differing in cobalt tolerance

被引：33
作者：
Lwalaba, Jonas Lwalaba Wa [1 ,2 ]
Zvogbo, Gerald [1 ]
Mulembo, Mamba [1 ,2 ]
Mundende, Mukobo [2 ]
Zhang, Guoping [1 ]
机构：
[1] Zhejiang Univ, Dept Agron, Coll Agr & Biotechnol, Key Lab Crop Germplasm Resource, Hangzhou, Zhejiang, Peoples R China
[2] Univ Lubumbashi, Fac Agron, Dept Crops Sci, Lubumbashi, DEM REP CONGO
来源：
JOURNAL OF PLANT NUTRITION | 2017年 / 40卷 / 15期
关键词：
barley; cobalt; genotype; tolerance; toxicity; HEAVY-METALS; LIPID-PEROXIDATION; OXIDATIVE STRESS; IRON; METABOLISM; SEEDLINGS; CADMIUM; PLANTS; PHYTOTOXICITY; CHLOROPHYLL;
D O I：
10.1080/01904167.2017.1346676
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Cobalt (Co) is beneficial for legume plants and not an essential element for most plants. There is no sufficient information about the effect of Co stress on barley growth. The current experiment was carried out to investigate the effects of different Co levels (25, 50, 75, and 100 mu M) on growth and physiological traits of three barley genotypes (B325, J36, and B340) differing in Co tolerance. The results showed that Co stress inhibited plant growth, decreased chlorophyll content and photosynthetic rate, and enhanced oxidative stress. However, the effects differed among genotypes, with B325 and B340 being the most and the least affected, respectively. Co stress caused decrease and increase of manganese (Mn) and phosphorus (P) concentrations in both roots and shoots, respectively; iron (Fe) concentration had little change in shoots and a significant decrease in roots. The current results showed a close association of Co tolerance and its accumulation in plant tissues.
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收藏
页码：2192 / 2199
页数：8
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