TY - JOUR
T1 - A strain of Bacillus subtilis stimulates sunflower growth (Helianthus annuus L.) temporarily
AU - López-Valdez, F.
AU - Fernández-Luqueño, F.
AU - Ceballos-Ramírez, J. M.
AU - Marsch, R.
AU - Olalde-Portugal, V.
AU - Dendooven, L.
N1 - Funding Information:
We thank José Luna-Suárez for technical assistance. F.L.-V. and F.F.-L. received grant-aided support from ‘Consejo Nacional de Ciencia y Tecnología’ (CONACyT, México). The research was funded by CONACyT Project 2004-C01-479991. F.L.-V. did this work while on leave from CIBA – IPN.
PY - 2011/5/10
Y1 - 2011/5/10
N2 - Preliminary studies showed that a Bacillus subtilis strain stimulates plant growth. We investigated how inoculating seeds of a sunflower cultivar (Helianthus annuus L.) with this strain stimulated plant growth, soil properties and emissions of greenhouse gasses, i.e. carbon dioxide (CO2) and nitrous oxide (N2O), when cultivated in a greenhouse. Unfertilized sunflowers or fertilized with urea served as controls. After one month, root length and fresh and dry root weight of the sunflower was significantly higher in the bacteria amended plant than in the urea and unfertilized plants. However, at harvest, no positive effect was observed. The number of seeds per plant and seed weight was not significantly different between the treatments, but total plant N was significantly higher in urea-amended plants than in unfertilized plants. The CO2 production rate was not affected by treatment, but the N2O emission rate was significantly higher in soil amended with urea plus bacteria soil compared to the unfertilized treatments. It was found that the B. subtilis strain used in this study had a positive, but only temporarily effect on growth of the sunflower cultivar used.
AB - Preliminary studies showed that a Bacillus subtilis strain stimulates plant growth. We investigated how inoculating seeds of a sunflower cultivar (Helianthus annuus L.) with this strain stimulated plant growth, soil properties and emissions of greenhouse gasses, i.e. carbon dioxide (CO2) and nitrous oxide (N2O), when cultivated in a greenhouse. Unfertilized sunflowers or fertilized with urea served as controls. After one month, root length and fresh and dry root weight of the sunflower was significantly higher in the bacteria amended plant than in the urea and unfertilized plants. However, at harvest, no positive effect was observed. The number of seeds per plant and seed weight was not significantly different between the treatments, but total plant N was significantly higher in urea-amended plants than in unfertilized plants. The CO2 production rate was not affected by treatment, but the N2O emission rate was significantly higher in soil amended with urea plus bacteria soil compared to the unfertilized treatments. It was found that the B. subtilis strain used in this study had a positive, but only temporarily effect on growth of the sunflower cultivar used.
KW - Bacillus subtilis
KW - Greenhouse gasses
KW - Soil and plant characteristics
KW - Yield
UR - http://www.scopus.com/inward/record.url?scp=79953304857&partnerID=8YFLogxK
U2 - 10.1016/j.scienta.2011.02.006
DO - 10.1016/j.scienta.2011.02.006
M3 - Artículo
SN - 0304-4238
VL - 128
SP - 499
EP - 505
JO - Scientia Horticulturae
JF - Scientia Horticulturae
IS - 4
ER -