TY - JOUR
T1 - Multiple phytoplasmas associated with potato diseases in Mexico
AU - Leyva-López, Norma Elena
AU - Ochoa-Sánchez, Juan Carlos
AU - Leal-Klevezas, Diana Sara
AU - Martínez-Soriano, Juan Pablo
PY - 2002/12/1
Y1 - 2002/12/1
N2 - In recent years, the potato crop in Mexico has been notably affected by diseases recognized as potato purple top (PPT) in foliage and potato hair sprouts (PHS) in germinating tubers. In both cases, these syndromes reduce production by affecting viability of the tubers used as seeds. There is evidence indicating that phytoplasmas are associated with these syndromes. This study presents data on the molecular detection, characterization, and ecology of the pathogens related to PPT and PHS. Restriction fragment length polymorphism (RFLP) and sequence analysis indicated that PPT phytoplasma belongs to the 16SrI group and PHS phytoplasma fits in the 16SrII group. In this paper, we report that the two different phytoplasmas have been found coexisting in the same potato plant, which demonstrates the presence of mixed infection in the field. These phytoplasmas were also detected in weeds surrounding potato fields; therefore they should be considered as alternative hosts or natural reservoirs of PPT and PHS phytoplasmas.
AB - In recent years, the potato crop in Mexico has been notably affected by diseases recognized as potato purple top (PPT) in foliage and potato hair sprouts (PHS) in germinating tubers. In both cases, these syndromes reduce production by affecting viability of the tubers used as seeds. There is evidence indicating that phytoplasmas are associated with these syndromes. This study presents data on the molecular detection, characterization, and ecology of the pathogens related to PPT and PHS. Restriction fragment length polymorphism (RFLP) and sequence analysis indicated that PPT phytoplasma belongs to the 16SrI group and PHS phytoplasma fits in the 16SrII group. In this paper, we report that the two different phytoplasmas have been found coexisting in the same potato plant, which demonstrates the presence of mixed infection in the field. These phytoplasmas were also detected in weeds surrounding potato fields; therefore they should be considered as alternative hosts or natural reservoirs of PPT and PHS phytoplasmas.
KW - Alternate hosts
KW - Fine sprouts
KW - Mycoplasma-like organisms
KW - Purple top
KW - Witches' broom
UR - http://www.scopus.com/inward/record.url?scp=0242669285&partnerID=8YFLogxK
U2 - 10.1139/w02-109
DO - 10.1139/w02-109
M3 - Artículo
SN - 0008-4166
VL - 48
SP - 1062
EP - 1068
JO - Canadian Journal of Microbiology
JF - Canadian Journal of Microbiology
IS - 12
ER -