Bradyrhizobium japonicum strain Asw1 colonizing cowpea ( Vigna unguiculata L.) roots mediates eco-physiological and growth responses in faba bean ( Vicia faba L.) and wheat ( Triticum aestivum L.)

Document Type : Regular issue (Original Article)

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Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt

Abstract

IN THE TWENTY-FIRST Century, the greatest challenge in the agriculture is the increment of the crop productivity with reducing the harmful implications resulting from the utilization of chemical fertilization. Plant-microbeinteraction provide an essential function for plant growth promotion andcrop productivity with safety management and controlling ecosystems pollution. In this research, Bradyrhizobiumjaponicum strain Asw1 (accession no. MN079045) isolated from Vignaunguiculata (L.) nodules were used to mediate some important eco-physiological responsiveness includedthe photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and leaf water-use efficiency (WUE) in faba bean and wheat plants. The results obtained indicated that the inoculation with strain Asw1was significantly (P˂ 0.05) enhanced the eco-physiological and growth responses in both plant species. Our research provides a considerable sign for the benefit use of Bradyrhizobiumjaponicum Asw1as plant growth promoting symbiotant. Therefore, we suggestthe exploitation of strain Asw1 in large scale, in the agricultural purposes.

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