Effect of Bacillus strains alone and in interaction with phytopathogenic fungi on plant growth and tomato fruit quality
Abstract An alternative to promote the quality of tomato fruits (Solanum lycopersicon L.) and reduce the indirect effects of phytopathogenic fungi that cause root and crown diseases, might be the use of antagonistic bacteria of the Bacillus genus. The aim of the study was to determine the effect, of three Bacillus strains alone and together in interaction with phytopathogenic fungi on the plant growth promotion of tomato cv. Merlice and fruit quality. For this purpose, seedlings were inoculated with three Bacillus species (B. amyloliquefaciens, B. methylotrophicus and B. subtilis subsp. inaquosorum) and then with three phytopathogenic fungi of tomato (Alternaria solani, Fusarium oxysporum and Phytophthora infestans). At the end of the production cycle, the height and weight of plants, the length and weight of roots, chlorophyll in leaves, and the fruit yield, was determined. The fruits harvested were characterized for color, weight, size, mesocarp thickness, total soluble solids, titratable acidity, bromatological analysis, firmness, and number and weight of seeds. Bacillus inoculation with the three strains resulted in higher values among the variables evaluated. Bacillus amyloliquefaciens significantly increased plant height and root length and yield by 30 %, whereas the phytopathogen F. oxysporum significantly decreased yield in 30 %. Bacillus subtilis strain showed positive effects on fruit diameter and firmness, protein content and root length. The three Bacillus strains promoted the growth of tomato plants, yield and improved some of their fruit quality parameters.
| Main Authors: | , , , , , , , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Universidad Autónoma de Nayarit
2019
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2007-33802019000100103 |
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