کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
575698 | 1453060 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Moving closer towards restoration of contaminated estuaries: Bioaugmentation with autochthonous rhizobacteria improves metal rhizoaccumulation in native Spartina maritima
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کلمات کلیدی
ACCChl aChl b1-aminocyclopropane-1-carboxylate - 1-آمینوسیلیکوپروپان-1-کربوکسیلاتminimal fluorescence level in the dark-adapted state - سطح فلورسانس حداقل در حالت تاریک سازگار استmaximal fluorescence level in the dark-adapted state - سطح فلورسنت حداکثر در حالت تطبیق تاریکیnet photosynthetic rate - نرخ فتوسنتزی خالصChlorophyll a - کلروفیل achlorophyll b - کلروفیل ب
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Spartina maritima is an ecosystem engineer that has shown to be useful for phytoremediation purposes. A glasshouse experiment using soil from a metal-contaminated estuary was designed to investigate the effect of a native bacterial consortium, isolated from S. maritima rizhosphere and selected owing to their plant growth promoting properties and multiresistance to heavy metals, on plant growth and metal accumulation. Plants of S. maritima were randomly assigned to three soil bioaugmentation treatments (without inoculation, one inoculation and repeated inoculations) for 30 days. Growth parameters and photosynthetic traits, together with total concentrations of several metals were determined in roots and/or leaves. Bacterial inoculation improved root growth, through a beneficial effect on photosynthetic rate (AN) due to its positive impact on functionality of PSII and chlorophyll concentration. Also, favoured intrinsic water use efficiency of S. maritima, through the increment in AN, stomatal conductance and in root-to-shoot ratio. Moreover, this consortium was able to stimulate plant metal uptake specifically in roots, with increases of up to 19% for As, 65% for Cu, 40% for Pb and 29% for Zn. Thus, bioaugmentation of S. maritima with the selected bacterial consortium can be claimed to enhance plant adaptation and metal rhizoaccumulation during marsh restoration programs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 300, 30 December 2015, Pages 263-271
Journal: Journal of Hazardous Materials - Volume 300, 30 December 2015, Pages 263-271
نویسندگان
Jennifer Mesa, Ignacio David RodrÃguez-Llorente, Eloisa Pajuelo, José MarÃa Barcia Piedras, Miguel Angel Caviedes, Susana Redondo-Gómez, Enrique Mateos-Naranjo,