TY - JOUR
T1 - Rhizospheric bacteria for use in preventing Fusarium wilt and crown root rot of tomato under natural field conditions
AU - Khalil, Md Masudur Rahman
AU - Félix-Gastélum, Rubén
AU - Peñuelas-Rubio, Ofelda
AU - Argentel-Martínez, Leandris
AU - Maldonado-Mendoza, Ignacio Eduardo
N1 - Publisher Copyright:
© 2022 The Canadian Phytopathological Society.
PY - 2022
Y1 - 2022
N2 - Biocontrol, an alternative to chemical control against plant pathogens, may also improve plant health and enhance fruit yield. Tomato production in open fields or greenhouses is constrained by the pathogens Fusarium oxysporum f. sp. lycopersici race 3 (Fol R3) and F. oxysporum f. sp. radicis-lycopersici (Forl). In this work, we studied the biocontrol effect of the antagonistic bacteria Acinetobacter calcoaceticus AcDB3, Bacillus thuringiensis BtMB9, B. subtilis BsTA16, and B. amyloliquefaciens BaMA26 in field trials with four tomato hybrids over two consecutive growing seasons (2019–2020 and 2020–2021). The effect of these bacteria on plant growth was also evaluated. The presence of F. oxysporum in field soil and/or infected plants was confirmed microbiologically. All four bacterial strains significantly suppressed the severity of Fusarium crown and root rot of tomato (FCRRT) and Fusarium wilt symptoms, as well as increased tomato yield under field conditions. Among the four strains, B. subtilis BsTA16 showed the highest reduction in symptoms of Fusarium wilt (68%) and FCRRT (74%). To the best of our knowledge, this is the first report of biological control agents (BCAs) exerting antagonistic activity against both FCRRT caused by Forl and Fusarium wilt caused by Fol in tomato under field conditions.
AB - Biocontrol, an alternative to chemical control against plant pathogens, may also improve plant health and enhance fruit yield. Tomato production in open fields or greenhouses is constrained by the pathogens Fusarium oxysporum f. sp. lycopersici race 3 (Fol R3) and F. oxysporum f. sp. radicis-lycopersici (Forl). In this work, we studied the biocontrol effect of the antagonistic bacteria Acinetobacter calcoaceticus AcDB3, Bacillus thuringiensis BtMB9, B. subtilis BsTA16, and B. amyloliquefaciens BaMA26 in field trials with four tomato hybrids over two consecutive growing seasons (2019–2020 and 2020–2021). The effect of these bacteria on plant growth was also evaluated. The presence of F. oxysporum in field soil and/or infected plants was confirmed microbiologically. All four bacterial strains significantly suppressed the severity of Fusarium crown and root rot of tomato (FCRRT) and Fusarium wilt symptoms, as well as increased tomato yield under field conditions. Among the four strains, B. subtilis BsTA16 showed the highest reduction in symptoms of Fusarium wilt (68%) and FCRRT (74%). To the best of our knowledge, this is the first report of biological control agents (BCAs) exerting antagonistic activity against both FCRRT caused by Forl and Fusarium wilt caused by Fol in tomato under field conditions.
KW - Acinetobacter
KW - Bacillus
KW - biocontrol
KW - plant growth promotion
KW - soilborne disease
UR - http://www.scopus.com/inward/record.url?scp=85132320707&partnerID=8YFLogxK
U2 - 10.1080/07060661.2022.2087104
DO - 10.1080/07060661.2022.2087104
M3 - Artículo
AN - SCOPUS:85132320707
SN - 0706-0661
VL - 44
SP - 836
EP - 848
JO - Canadian Journal of Plant Pathology
JF - Canadian Journal of Plant Pathology
IS - 6
ER -