Cytokinin Production by Azospirillum brasilense Contributes to Increase in Growth, Yield, Antioxidant, and Physiological Systems of Wheat (Triticum aestivum L.)

Frontiers in Microbiology

Ehab A. A. Salama¹  Hazem M. Kalaji³  Jacek Wróbel⁴  Eldessoky S. Dessoky⁵  Muhammad Saqlain Zaheer⁷  Talha Javed⁸  Makhdoom Ibad Ullah Hashmi⁹  Javaid Iqbal^1,10  Muhammad Arslan Iqbal^1,11  Muhammad Zahid Mumtaz^1,12  Kehinde O. Erinle^1,13  Hafiz Haider Ali^1,14 

[1] 0Agricultural Botany Department, Faculty of Agriculture Saba Basha, Alexandria University, Alexandria, Egypt;1Department of Plant Physiology, Institute of Biology, Warsaw University of Life Sciences SGGW, Warsaw, Poland;2Institute of Technology and Life Sciences - National Research Institute, Raszyn, Poland;3Department of Bioengineering, West Pomeranian University of Technology in Szczecin, Szczecin, Poland;4Department of Biology, College of Science, Taif University, Taif, Saudi Arabia;College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China;Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan;Department of Agronomy, University of Agriculture, Faisalabad, Pakistan;Department of Chemical Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan;Department of Entomology, Muhammad Nawaz Shareef (MNU) University of Agriculture, Multan, Pakistan;District Headquarter Hospital, Muzaffargarh, Pakistan;Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore, Pakistan;School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia;Sustainable Development Study Center (SDSC), Government College University, Lahore, Pakistan;

关键词: bacteria;    cytokinin;    hormones;    rhizosphere;    wheat;   

DOI  :  10.3389/fmicb.2022.886041

来源: DOAJ

【 摘 要 】

Plant growth-promoting rhizobacteria are known to associate with several cereal crops. The rhizobacterium exerts its function by synthesizing diverse arrays of phytohormones, such as cytokinin (Ck). However, it is difficult to determine the plant growth promotion when a bacterium produces many different kinds of phytohormones. Therefore, to assess the involvement of Ck in growth promotion and activation of antioxidant and physiological systems, we set up this experiment. Wheat seeds (Triticum aestivum L.) were inoculated with Azospirillum brasilense RA−17 (which produces zeatin type Ck) and RA−18 (which failed to produce Ck). Results showed that seed inoculation with RA−17 significantly improved growth and yield-related parameters compared with RA−18. The activity of enzymes, proline contents, and endogenous hormonal levels in wheat kernels were improved considerably with RA−17 than with RA−18. Strain RA−17 enhanced grain assimilation more than strain RA−18 resulting in a higher crop yield. These results suggest that microbial Ck production may be necessary for stimulating plant growth promotion and activating antioxidant and physiological systems in wheat.

【 授权许可】

Unknown