Record ID No. |
552 |
Author(s) |
Feng G., Zhang F.S*., Li X.L ., Tian C.Y., Tang C.X ., Rengel Z , 2002 |
Affiliation |
*China Agr Univ,Department of Plant Nutrition,Beijing 100094,Peoples R China |
Title |
Uptake of nitrogen from indigenous soil pool by cotton plant inoculated with arbuscular mycorrhizal fungi |
Source. Vol.(no):Page |
Communications in Soil Science and Plant Analysis, 33(19-20), 3825-3836p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Nutrition |
Host |
Cotton, Gossypium arboreum |
Organism |
Sclerocystis sinuosa, Glomus mosseae |
Country |
Peoples R China, Asia |
Abstracts |
A pot experiment was carried out with the following
treatments: non-mycorrhizal control and inoculation by
arbuscular mycor-rhizal fungi (Glomus mosseae (Nicol. & Gerd.)
Gerdemann & Trappe or Sclerocystis sinuosa Gerd. & Bakshi) at
four P levels (0, 9.5, 19, and 38 mg P kg(-1)). Cotton
(Gossypium arboreum L. Cv. Xin-lu-zao No.1) was used as the host
plant. The N-15-labeled urea (2.5% abundance) was mixed with
soil thoroughly at a rate of 100 mg Nkg(-1). Colonization by the
two arbuscular mycorrhizal fungi significantly improved the
growth of cotton plants at all P levels compared with
non-mycorrhizal plants. Nitrogen concentration in shoots was not
significantly affected by arbuscular mycorrhizal fungi, while
the nitrogen content was significantly higher in mycorrhizal
plants than in non-mycorrhizal plants. The N-15 atom % excess in
mycorrhizal plant was significant lower than that in
non-mycorrhizal plants. Considering the derivation of the
nitrogen in the cotton plants, mycorrhizal fungi had no
- 95 -
significant influence on uptake of nitrogen derived from
fertilizer, but increased nitrogen derived from soil
significantly. Colonization by mycorrhizal fungi increased the
amount of soil available nitrogen (''A(N)'' value). The results
indicate that arbuscular mycorrhizal fungi may facilitated plant acquisition of nitrogen from sources which are not or less
available to non-mycorrhizal plants
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