Los hongos micorrízicos arbusculares mejoran el crecimiento de especies de árboles pioneros de bosques tropicales en suelos de sabana y de bosque tropical lluvioso bajo condiciones de vivero

  • Jonás Álvarez-Lopeztello Universidad Autónoma del Estado de México
  • Rafael F. del Castillo Instituto Politécnico Nacional, CIIDIR-Oaxaca, Hornos 1003, Santa Cruz Xoxocotlán, Oaxaca, 71230, México.
  • Celerino Robles Instituto Politécnico Nacional, CIIDIR-Oaxaca, Hornos 1003, Santa Cruz Xoxocotlán, Oaxaca, 71230, México.
  • Laura V. Hernández-Cuevas Universidad Autónoma de Tlaxcala, Laboratorio de Biología Molecular, CIGyA, Ciencias Biológicas, Texmelucan-Ixtacuixtla, Tlaxcala, 90120, México.

Resumen

Background: Tropical rainforests and savannas are often spatially distributed at close distances. The combined effects of soil type and arbuscular mycorrhizal fungi (AMF) might contribute to explain the preference of tropical rainforest tree species for forest areas over those of savannas. However, few studies have examined such effects on pioneer tropical tree species.

Objective: To evaluate the effects of soil type and inoculation with AMF consortia on the growth of seedlings of pioneer tree species of tropical forest.

Methods: We conducted a 2 x 2 factorial experiment to evaluate the role of soil type (rainforest or savanna) and native AMF consortia (with or without inoculation) on growth (height and stem diameter) of four native pioneer tree seedling species under tree nursery conditions. For each treatment, 29-30 individuals per species were evaluated.

Results and conclusions: The highest growth (height and stem diameter) was detected on rainforest soils inoculated with AMF. Uninoculated plants growing on savanna soils rendered the lowest performance. Our results illustrate the AMF and soil type importance on the growth of pioneer tropical tree species and may help explain their selectivity for the rainforest ecosystem. AMF inoculation could be a valuable procedure in ecological restoration projects of tropical forests.

Publicado
2021-04-20
Sección
Artículos científicos originales