Journal of Food, Agriculture and Environment

Vol 12, Issue 1,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Influence of arbuscular mycorrhiza and phosphorus fertilization on the gas exchange status, growth and nutrient contents of soybean (Glycine max L.) plants grown in a sandy loam soil


Gamal M. Abdel-Fattah 1, 2*, Abdul-Wasea A. Asrar 1, Salem M. Al-Amri 3, Eslam M. Abdel-Salam 1

Recieved Date: 2013-11-06, Accepted Date: 2014-01-20


A pot experiment was conducted to study the effect of arbuscular mycorrhiza (AM) fungus, Glomus constrictum (Trappe) and soil phosphorus on gas exchange parameters (photosynthetic rate “Photo”, stomatal conductance “Cond” and transpiration rate “Trmmol”), growth and nutrition of soybean plants grown in sterilized soil. Two levels of phosphorus fertilizers as KH2PO4 (0.0 and 0.5 g kg-1 soil) were used in these investigations. Addition of soluble phosphate to soil increased all growth parameters, nutrient contents and most of the studied photosynthetic parameters of mycorrhizal and non-mycorrhizal soybean plants. Under two levels of phosphorus fertilizers, mycorrhizal inoculation significantly increased growth responses, nutrient contents (P & N in shoot and root tissues), acid and alkaline phosphates and total soluble proteins in root tissues compared to non-mycorrhizal ones. Those stimulations were related to the level of the mycorrhizal colonization in the root tissues for each treatment. Mycorrhizal soybean plants had significantly higher Photo, Cond and Trmmol than those of non-mycorrhizal plants especially in soil unamended with phosphorus. Increase in the soluble phosphate addition to soil generally reduced the percentage of mycorrhizal colonization levels in soybean root tissues and consequently the mycorrhizal benefits. In general, growth, nutrition and photosynthetic parameters of soybean plants showed a high degree of dependency on mycorrhizal fungus in non-fertilized soil when compared to soil fertilized with phosphorus. This study confirms that AM colonization can improve growth and nutrition of the soybean plant through increasing photosynthetic status in leaves particularly at low soil phosphorus.


Acid and alkaline phosphatases, arbuscular mycorrhiza, gas exchange, growth, nutrition, soybean, protein

Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 1
Category: Agriculture
Pages: 150-156

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :