2020
Hernández, Dainiz Hernández; Larsen, John; González-Rodríguez, Antonio; Tapia-Torres, Yunuen; Barrera, Erick; Eguiarte, Luis E.; García-Oliva, Felipe
Cooperation between Sporobolus airoides and associated arbuscular mycorrhizal fungi for phosphorus acquisition under drought conditions in an oligotrophic desert ecosystem Artículo de revista
En: Rhizosphere, vol. 15, 2020, ISSN: 24522198.
Resumen | Enlaces | Etiquetas: Arbuscular mycorrhiza, Cuatro ciénegas, Nutrient stoichiometric homeostasis, Rhizosphere, Sporobolus airoides
@article{nokey,
title = {Cooperation between Sporobolus airoides and associated arbuscular mycorrhizal fungi for phosphorus acquisition under drought conditions in an oligotrophic desert ecosystem},
author = {Dainiz Hernández Hernández and John Larsen and Antonio González-Rodríguez and Yunuen Tapia-Torres and Erick Barrera and Luis E. Eguiarte and Felipe García-Oliva},
doi = {10.1016/j.rhisph.2020.100225},
issn = {24522198},
year = {2020},
date = {2020-01-01},
journal = {Rhizosphere},
volume = {15},
publisher = {Elsevier B.V.},
abstract = {Plants from phosphorus (P) limited environments have developed various strategies for acquiring P from the soil, and for maintaining P homeostasis within the plant. We analyzed the mechanisms of phosphorus acquisition used by the grass Sporobolus airoides-rhizosphere microbiota during two years with contrasting annual rainfall in an extreme P-oligotrophic ecosystem. We determined arbuscular mycorrhizal fungi (AMF) root and soil colonization, and the activity of three P-related eco-enzymes over two consecutive years. We also determined C, N, and P concentrations and ratios in plant biomass, microbial biomass and soil for assessing nutrient homeostasis of soil microbial community and plants. S. airoides invested more carbon in the AMF symbiosis in the drought year in the site more limited by P (Pozas Azules site). Additionally, the specific activity of phosphomonoesterases was higher in this site, suggesting that the microbial community invests more energy to produce this enzyme to release P from organic molecules. In conclusion, our results show evidence of the importance of AMF symbiosis for S. airoides to cope with P and water limitations in a highly oligotrophic ecosystem.},
keywords = {Arbuscular mycorrhiza, Cuatro ciénegas, Nutrient stoichiometric homeostasis, Rhizosphere, Sporobolus airoides},
pubstate = {published},
tppubtype = {article}
}
Plants from phosphorus (P) limited environments have developed various strategies for acquiring P from the soil, and for maintaining P homeostasis within the plant. We analyzed the mechanisms of phosphorus acquisition used by the grass Sporobolus airoides-rhizosphere microbiota during two years with contrasting annual rainfall in an extreme P-oligotrophic ecosystem. We determined arbuscular mycorrhizal fungi (AMF) root and soil colonization, and the activity of three P-related eco-enzymes over two consecutive years. We also determined C, N, and P concentrations and ratios in plant biomass, microbial biomass and soil for assessing nutrient homeostasis of soil microbial community and plants. S. airoides invested more carbon in the AMF symbiosis in the drought year in the site more limited by P (Pozas Azules site). Additionally, the specific activity of phosphomonoesterases was higher in this site, suggesting that the microbial community invests more energy to produce this enzyme to release P from organic molecules. In conclusion, our results show evidence of the importance of AMF symbiosis for S. airoides to cope with P and water limitations in a highly oligotrophic ecosystem.
2018
Sarabia, Marcela; Cazares, Saila; González-Rodríguez, Antonio; Mora, Francisco; Carreón-Abud, Yazmín; Larsen, John
Plant growth promotion traits of rhizosphere yeasts and their response to soil characteristics and crop cycle in maize agroecosystems Artículo de revista
En: Rhizosphere, vol. 6, pp. 67-73, 2018, ISSN: 24522198.
Resumen | Enlaces | Etiquetas: Agroecology, Maize, Rhizosphere, Soil, Yeasts
@article{Sarabia2018,
title = {Plant growth promotion traits of rhizosphere yeasts and their response to soil characteristics and crop cycle in maize agroecosystems},
author = {Marcela Sarabia and Saila Cazares and Antonio González-Rodríguez and Francisco Mora and Yazmín Carreón-Abud and John Larsen},
doi = {10.1016/j.rhisph.2018.04.002},
issn = {24522198},
year = {2018},
date = {2018-01-01},
journal = {Rhizosphere},
volume = {6},
pages = {67-73},
publisher = {Elsevier B.V.},
abstract = {Yeasts are common soil inhabitants, but information about their ecology is limited. Here we examined the abundance of rhizosphere yeasts in six conventional maize agroecosystems in two different geographic areas in Mexico differing in soil characteristics and agricultural practices. In order to examine the plant growth promotion potential of maize rhizosphere yeasts a collection of yeast species was obtained, which were identified taxonomically in terms of sequencing of the D1D2 domain. Main results showed that yeasts were present in all maize fields during the complete growing cycle, though highest during flowering. The abundance of rhizosphere yeasts responded negatively to soil pH and amount of Mg. The maize rhizosphere yeast collection obtained included eight species from six genera with the Ascomycota species Meyerozyma guillermondii and Candida railenensis as the most frequent. Four out of the eight yeast species solubilised Ca3(PO4)2, whereas none of the yeasts solubilised FePO4. Maize plant growth was promoted after inoculation with Cryptococcus flavus and Solicoccozyma aeria in terms of shoot dry weight and with C. railenensis in terms of root dry weight, but only in combination with mineral P fertilisation. In conclusion, rhizosphere yeasts with plant growth promotion traits are common in maize agroecosystems, where soil physico-chemical characteristics and plant growth stage seem to determine their abundance.},
keywords = {Agroecology, Maize, Rhizosphere, Soil, Yeasts},
pubstate = {published},
tppubtype = {article}
}
Yeasts are common soil inhabitants, but information about their ecology is limited. Here we examined the abundance of rhizosphere yeasts in six conventional maize agroecosystems in two different geographic areas in Mexico differing in soil characteristics and agricultural practices. In order to examine the plant growth promotion potential of maize rhizosphere yeasts a collection of yeast species was obtained, which were identified taxonomically in terms of sequencing of the D1D2 domain. Main results showed that yeasts were present in all maize fields during the complete growing cycle, though highest during flowering. The abundance of rhizosphere yeasts responded negatively to soil pH and amount of Mg. The maize rhizosphere yeast collection obtained included eight species from six genera with the Ascomycota species Meyerozyma guillermondii and Candida railenensis as the most frequent. Four out of the eight yeast species solubilised Ca3(PO4)2, whereas none of the yeasts solubilised FePO4. Maize plant growth was promoted after inoculation with Cryptococcus flavus and Solicoccozyma aeria in terms of shoot dry weight and with C. railenensis in terms of root dry weight, but only in combination with mineral P fertilisation. In conclusion, rhizosphere yeasts with plant growth promotion traits are common in maize agroecosystems, where soil physico-chemical characteristics and plant growth stage seem to determine their abundance.