| Autor: |
Corazon-Guivin MA; Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru.; Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil., Rengifo Del Aguila S; Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Jr. Amorarca N° 315, Morales 22201, Peru., Corrêa RX; Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil., Cordova-Sinarahua D; Center of Biotechnology and Genetics, Department of Biological Sciences, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado Km 16, Ilheus 45662-900, Brazil., Costa Maia L; Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil., Alves da Silva DK; Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil., Alves da Silva G; Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Recife 50740-600, Brazil., López-García Á; Departamento de Microbiología del Suelo y la Planta, Estación Experimental del Zaidín (EEZ), CSIC, 18008 Granada, Spain., Coyne D; International Institute of Tropical Agriculture (IITA), Ibadan 200113, Nigeria., Oehl F; Agroscope, Competence Division for Plants and Plant Products, Plant Protection Products-Impact and Assessment, Müller-Thurgau-Strasse 29, 8820 Wädenswil, Switzerland. |
| Abstrakt: |
The use of arbuscular mycorrhizal fungi (AMF) offers promising benefits to agriculture in the Amazon regions, where soils are characteristically acidic and nutrient-poor. The purpose of this research was to investigate the potential effects of two recently described species of AMF ( Nanoglomus plukenetiae and Rhizoglomus variabile ) native to the Peruvian Amazon for improving the plant growth of Plukenetia volubilis (inka nut or sacha inchi) and protecting the roots against soil pathogens. Two assays were simultaneously conducted under greenhouse conditions in Peru. The first focused on evaluating the biofertilizer effect of AMF inoculation, while the second examined the bioprotective effect against the root knot nematode, Meloidogyne incognita . Overall, the results showed that AMF inoculation of P. volubilis seedlings positively improved their development, particularly their biomass, height, and the leaf nutrient contents. When seedlings were exposed to M. incognita , plant growth was also noticeably higher for AMF-inoculated plants than those without AMF inoculation. Nematode reproduction was significantly suppressed by the presence of AMF, in particular R. variabile , and especially when inoculated prior to nematode exposure. The dual AMF inoculation did not necessarily lead to improved crop growth but notably improved P and K leaf contents. The findings provide strong justification for the development of products based on AMF as agro-inputs to catalyze nutrient use and uptake and protect crops against pests and diseases, especially those that are locally adapted to local crops and cropping conditions. |
