Response of sorghum bicolor (l.) Monech to dual inoculation with glomus fasciculatum and Herbaspirillum seropedicae

Deepadevi, M. and Basu, M.J. and Santhaguru, K. (2010) Response of sorghum bicolor (l.) Monech to dual inoculation with glomus fasciculatum and Herbaspirillum seropedicae. General and Applied Plant Physiology , 36 (3-4). pp. 176-182.

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Abstract

Gramineous plants establish strong symbiosis with arbuscular mycorrhizal fungi that can improve the uptake of P from soil. They also associate with some diazotrophic bacteria and get biologically fixed nitrogen. Sorghum bicolor is a sugar-rich multipurpose fodder crop well suited to dry farming. In the present study, S. bicolor plants were grown in a green house and the impact of inoculation with Herbaspirillum seropedicae and Glomus fasciculatum on growth, N and P nutrition of the plant was studied. A single inoculation with either H. seropedicae or G. fasciculatum supported plant growth promotion effect resulting in enhanced root length (5-7%), shoot length (18-22%), root biomass (40-58%), shoot biomass (46%), total N content (21-49%), and total P content (46-167%) compared to the control. The dual inoculation with H. seropediae and G. fasciculatum resulted in enhanced root length (15%), shoot length (40%), root biomass (105%), shoot biomass (91%), total N content (108%), and total P content (138%) compared to the control. Within the single inoculated plants, N accumulation was higher by 23% after H. seropedicae inoculation compared with G. fasciculatum inoculation. In contrast, P accumulation in plants was higher by 82% after G. fasciculatum inoculation compared with H. seropedicae inoculation. There was little difference in hyphal (92-95%) and vesicular (82-83%) infection between G. fasciculatum inoculated plants and G. fasciculatum + H. seropedicae inoculated plants indicating no interference of bacteria on mycorrhizal colonization in roots of S. bicolor

Item Type: Article
Author Affiliation: Centre for Research and P.G. Department of Botany, Thiagarajar College (Madurai Kamaraj University), Madurai-625009, India
Subjects: Plant Physiology and Biochemistry > Plant Physiology
Social Sciences > Plant Physiology and Biochemistry > Plant Physiology

Plant Physiology and Biochemistry > Biochemistry
Social Sciences > Plant Physiology and Biochemistry > Biochemistry
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 22 Mar 2011 23:10
Last Modified: 22 Mar 2011 23:10
Official URL: http://www.bio21.bas.bg/ipp/gapbfiles/v-36/GAPP_v3...
URI: http://eprints.icrisat.ac.in/id/eprint/1673

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