African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5131

Review

Influence of phytosiderophore on iron and zinc uptake and rhizospheric microbial activity

M. L. Dotaniya1*, Dasharath Prasad2, H. M. Meena3, D. K. Jajoria4, G. P. Narolia4, K. K. Pingoliya4, O. P. Meena2, Kuldeep Kumar5, B. P. Meena1, Asha Ram6, H. Das1 , M. Sreenivasa Chari7 and Suresh Pal8
1Indian Institute of Soil Science, Bhopal, India. 2Swami Keshwanand Rajasthan Agricultural University, Bikaner, India. 3Central Arid Zone Research Institute, Jodhpur, India. 4 Maharana Pratap University of Agriculture and Technology, Udaipur, India. 5Central Soil and Water Conservation Research and Training Institute, Dehradun, India. 6National Research Centre for Agroforestry, Jhansi, India. 7Agricultural Research Station, Utukur, Kadapa, India. 8Agricultural Scientists Recruitment Board, New Delhi, India.
Email: [email protected]

  •  Accepted: 12 December 2013
  •  Published: 29 December 2013

Abstract

Micronutrients play a vital role in crop production and sustainable crop yield. High crop yield varieties make soil micronutrients deficient, without incorporating external inputs. Due to deficiency of micronutrients such as iron (Fe) and zinc (Zn), yield decline drastically. It limits more than macronutrients, but requirements of these plant nutrients are very less, but plants have self regulated mechanism, which secrete the phytosiderophore (PS) and mobilize the lower concentration of these metals to soil solution for easy uptake by plants. Phytosiderophore production is a general response of plants to Fe and Zn deficiency in particular. The uptake rate of PS-chelated Fe and Zn is 100 and 5 to 10 times higher than that of free Fe and Zn, respectively. Higher amount of carbon containing organic compounds enhanced the microbial activities in rhizosphere and alter the plant nutrient chemistry in soil. This article discussed the importance of PS in microbial activity in soil and nutrient uptake mechanism in plants.

 

Key words: Iron, phytosiderophores, rhizospheric microbial activity, zinc.