Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scienta.2016.01.024 |
Bacillus pumilus alleviates boron toxicity in tomato (Lycopersicum esculentum L.) due to enhanced antioxidant enzymatic activity | |
Sirajuddin1; Khan, Alamgir1; Ali, Liaqat2; Chaudhary, Hassan Javed1; Munis, M. Farooq Hussain1; Bano, Asghari1; Masood, Sajid1 | |
通讯作者 | Masood, Sajid |
来源期刊 | SCIENTIA HORTICULTURAE
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ISSN | 0304-4238 |
EISSN | 1879-1018 |
出版年 | 2016 |
卷号 | 200页码:178-185 |
英文摘要 | High soil boron (B) concentrations in arid and semi-arid regions of the world are responsible for decreased crop productivity. However, the use of plant growth promoting rhizobacteria (PGPR) can improve the plant growth under stress conditions like high B either due to limited uptake of B or enhanced antioxidants production, as PGPR have been shown to enhance the resistance in plants against various abiotic stresses. A pot experiment was conducted under green house conditions according to completely randomized design (CRD) and comprised of four levels of B (0.45, 10, 20, and 50 mg B kg(-1) soil) either with or without PGPR Plants were grown for 10 weeks after onset of experiment and analyzed for mineral composition including B and antioxidation activity. Shoot fresh weight, shoot dry weight and leaf chlorophyll contents were inhibited to increasing levels of B. Interestingly, shoot K+ concentration tended to increase with increasing B levels, particularly at 50 mg B kg(-1) soil; third level of B (B3). Similarly, highest shoot B concentrations were observed at high levels of B supply (B3) as compared to all other treatments. Likewise, with the increase in external B supply, antioxidant enzymes activities and proline contents in tomato shoot were enhanced. Bacillus pumilus inoculation significantly improved the shoot fresh weight and dry weight of unstressed (control) as well as B-stressed plants. In general, B. pumilus inoculation enhanced the plant antioxidation activity, particularly superoxide dismutase (SOD) and catalase (CAT) antioxidant enzymes. Contrary, the interaction between high B and B. pumilus remained insignificant for limiting the shoot B uptake except for second level of B (B2) which decreased the shoot B accumulation by 21% as compared to non-inoculated B2. Our results suggest that PGPR inoculation confer tolerance in B-stressed plants through the induced plant antioxidation activity. Additionally, PGPR inoculation reduces the shoot B accumulation, however, differential response of shoot B inhibition is expected to increasing B concentrations. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Antioxidants Boron Chlorophyll Shoot ions PGPR |
类型 | Article |
语种 | 英语 |
国家 | Pakistan |
收录类别 | SCI-E |
WOS记录号 | WOS:000373412300024 |
WOS关键词 | GROWTH-PROMOTING RHIZOBACTERIA ; PLANT-GROWTH ; OXIDATIVE STRESS ; MEMBRANE-PERMEABILITY ; SALINITY STRESS ; EXCESS BORON ; WHEAT ; YIELD ; RESPONSES ; RESISTANCE |
WOS类目 | Horticulture |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196268 |
作者单位 | 1.Quaid I Azam Univ, Dept Plant Sci, Islamabad 45320, Pakistan; 2.Islamia Univ, Univ Coll Agr & Environm Sci, Dept Hort, Bahwalpur 63100, Pakistan |
推荐引用方式 GB/T 7714 | Sirajuddin,Khan, Alamgir,Ali, Liaqat,et al. Bacillus pumilus alleviates boron toxicity in tomato (Lycopersicum esculentum L.) due to enhanced antioxidant enzymatic activity[J],2016,200:178-185. |
APA | Sirajuddin.,Khan, Alamgir.,Ali, Liaqat.,Chaudhary, Hassan Javed.,Munis, M. Farooq Hussain.,...&Masood, Sajid.(2016).Bacillus pumilus alleviates boron toxicity in tomato (Lycopersicum esculentum L.) due to enhanced antioxidant enzymatic activity.SCIENTIA HORTICULTURAE,200,178-185. |
MLA | Sirajuddin,et al."Bacillus pumilus alleviates boron toxicity in tomato (Lycopersicum esculentum L.) due to enhanced antioxidant enzymatic activity".SCIENTIA HORTICULTURAE 200(2016):178-185. |
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