Science Letters:Alterations in seedling vigour and antioxidant enzyme activities in Catharanthus roseus under seed priming with native diazotrophs

作     者：KARTHIKEYAN B. JALEEL C.A. GOPI R. DEIVEEKASUNDARAM M. 

作者机构：Department of Microbiology Faculty of Agriculture Annamalai University Annamalainagar 608 002 Tamilnadu India Stress Physiology Lab Department of Botany Annamalai University Annamalainagar 608 002 Tamilnadu India 

出 版 物：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 (浙江大学学报（英文版）B辑（生物医学与生物技术）)

年 卷 期：2007年第8卷第7期

页      面：453-457页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

主　　题：Rhizosphere Non-rhizosphere Azospirillum Azotobacter Antioxidant enzyme Catharanthus roseus 

摘      要：An experiment was conducted on Catharanthus roseus to study the effect of seed treatments with native diazotrophs on its seedling growth and antioxidant enzyme activities. The treatments had significant influence on various seedling parameters. There is no significant influence on dry matter production with the diazotrophs, Azospirillum and Azotobacter. However, the vital seedling parameters such as germination percentage and vigour index were improved. Azotobacter treatment influenced maximum of 50% germination, whereas Azospirillum and Azotobacter were on par with C. roseus with respect to their vigour index. There was significant difference in the population of total diazotrophs. Azospirillum and Azotobacter between rhizosphere and non-rhizosphere soils of C. roseus had the same trend and were observed at various locations of the study. The activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT) were increased to a significant extent due to the treatment with diazotrophs.