Journal
BRAZILIAN JOURNAL OF MICROBIOLOGY
Volume 49, Issue 1, Pages 67-78Publisher
SPRINGER
DOI: 10.1016/j.bjm.2017.04.010
Keywords
Oryza sativa L.; DSE; NO3--N; Tillering; Colonization
Categories
Funding
- Universidade Federal Rural do Rio de Janeiro (UFRRJ)
- Laboratory Nutrition of Plants and Biochemical Plant
- Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF)
- LBCT
- Empresa Brasileira de Pesquisa Agropecuaria (Embrapa)
- Fundagao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Coordenagao de Aperfeigoamento de Pessoal de Nivel Superior (CAPES)
Ask authors/readers for more resources
The use of dark septate fungi (DSE) to promote plant growth can be beneficial to agriculture, and these organisms are important allies in the search for sustainable agriculture practices. This study investigates the contribution of dark septate fungi to the absorption of nutrients by rice plants and their ensuing growth. Four dark septate fungi isolates that were identified by Internal transcribed spacer phylogeny were inoculated in rice seeds (Cv. Piaui). The resulting root colonization was estimated and the kinetic parameters V-max and K-m were calculated from the nitrate contents of the nutrient solution. The macronutrient levels in the shoots, and the NO3--N, NH4+-N, free amino-N and soluble sugars in the roots, sheathes and leaves were measured. The rice roots were significantly colonized by all of the fungi, but in particular, isolate A103 increased the fresh and dry biomass of the shoots and the number of tillers per plant, amino-N, and soluble sugars as well as the N, P, K, Mg and S contents in comparison with the control treatment. When inoculated with isolates A103 and A101, the plants presented lower K-m values, indicating affinity increases for NO3--N absorption. Therefore, the A103 Pleosporales fungus presented the highest potential for the promotion of rice plant growth, increasing the tillering and nutrients uptake, especially N (due to an enhanced affinity for N uptake) and P. Published by Elsevier Editora Ltda. on behalf of Sociedade Brasileira de Microbiologia. This is an open access article under the CC BY-NC-ND license
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available