Arbuscular mycorrhizae and ectomycorrhizae in native tree legumes in Uruguay |
| |
| Affiliation: | 1. Department of Bioscience and Food Production Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, 8304, Minami-minowa, Nagano 399-4598, Japan;2. Sugadaira Montane Research Center, University of Tsukuba, 1278-294, Sugadaira, Ueda, Nagano 386-2204, Japan;3. United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan;4. Department of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, 8304, Minami-minowa, Nagano 399-4598, Japan;5. Division of Terrestrial Ecosystem, Institute of Mountain Science, Shinshu University, 8304, Minami-minowa, Nagano 399-4598, Japan;1. Centro Universitario Regional Este, CURE-Rocha, Uruguay;2. IIMyC, CONICET-Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales, Laboratorio de Paleoecología y Palinología, Funes 3250, 7600, Mar del Plata, Argentina;1. Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mor, Mexico;2. Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mor, Mexico;3. Ciencias Agrogenómicas, Escuela Nacional de Estudios Superiores Unidad León, Universidad Nacional Autónoma de México, Mexico;1. School of Economics and Management, Harbin Engineering University, Harbin, 150007, China;2. Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China;3. Graduate School, Heilongjiang University of Science & Technology, Harbin, 150022, China;4. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Kehua Street No. 511, Guangzhou, 510640, China;5. Ludong University, Yantai, 264025, China |
| |
| Abstract: | The level of colonization by ectomycorrhizae (ECM) and arbuscular endomycorrhizae (AM) of 23 species of native trees and shrub legumes was studied. Root samples were obtained from different regions of Uruguay. Colonization level was determined by observing AM fungal structures (hyphae, arbuscules, vesicules) in stained root segments. The number and morphological type of spores were determined in 100 g of rhizosphere soil. Ectomycorrhizal colonization was evaluated by direct and microscopic observation of root tips. All species had a high level of AM colonization. In Papilionoideae colonization varied between 62% and 78%, in the Mimosoideae between 18% and 69% and in the Caesalpinioideae the variation was larger (6–74%). These results show a significant presence of fungi that form arbuscular mycorrhizae in our soils. The number of spores forming AM in rhizosphere soil (280–l.620 spores/100 g of dry soil) was also highly relative to references for other leguminous trees. Spores were grouped in three principal morphological types Acaulospora, Glomus and Sclerocystis. Presence of ECM fungi was evident only when observed under the microscope. 26% of the plant species exhibited this type of mycorrhizae, reaching a maximal value of 36% in Mimosoideae. Only six plant species exhibited both types of mycorrhizae. Dual colonization could help in the colonization of poor soils and for their use in agroforestry systems. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
