Record ID No. |
5117 |
Author(s) |
A. Pasaribu, R. B. Mohamad, A. Hashim, Z. A. Rahman, D. Omar and Md. M. Morshed , 2013 |
Affiliation |
Department of Crop Science, Faculty of Agriculture, Universit Putra Malaysia, 4340 UPM Serdang, Selangor D.E., Malaysia *Email: mmorshed_bd@yaho.com |
Title |
Effect of herbicide on sporulation and infectivity of vesicular mycorrhizal (Glomus mosseae) symbiosis with peanut plant |
Source. Vol.(no):Page |
Journal of Animal & Plant Sciences 23 (6):1671-1678p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biocides |
Host |
Arachis hypogaea |
Organism |
Glomus mosseae |
Country |
Malaysia, Southeast Asia |
Abstracts |
Arbuscular mycorhizal fungi are of interest for their reported roles in preserving soil fertilty in agroecosystem, which form mutualistic symbiosis with the rots of most agricultural plants. In the past, most research on VA mycorhizae has been focused on posible responses to fungicides, rather than on the potential efects on mycorhizal symbiosis folowing herbicide aplication. We studied the efect of thre aplication rates of two widely used herbicides (1.8, 3.6 and 5.4 µg a.i g-1 for alachlor and 1.08, 2.16 and 3.24 µg a.i g-1 for glyphosate) on sporulation and infection of peanut plant by G moseae under grenhouse conditons. The result of the study showed that he symbiont fungus G moseae responds in a diferential way to two diferent herbicides tested, and the fungus sensitvity to alachlor proved significantly higher than the glyphosate. However, none of the herbicide treatments afected the external hyphal length and SDH (Sucinate dehydrogenase) activity. But the spore number, total and active infection intensity of internal hyphae was significantly reduced with the increasing rates of alachlor aplication, while glyphosate had no significant efects at al aplication rates. Consequently, P (phosphorus) inflow through mycorhizal hyphae was significantly increased with the aplication rates of glyphosate, with the highest value (41.48 and 479.72 x10-13 mol P m-1 s-1 hyphal inflow and hyphal uptake, respectively) obtained at field recommended glyphosate rate (2.16 µg a.i g-1). Therefore, symbiotic functions of G moseae with host plant could be afected by the depresive efects of herbicides that are aparently related to the types of herbicide and their rates of aplication. |