1. FIRST REPORT OF MELOIDOGYNE ENTEROLOBII IN CAPSICUM ROOTSTOCKS CARRYING THE Me1 AND Me3/Me7 GENES IN CENTRAL BRAZIL.
- Author
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Pinheiro, Jadir B., Boiteux, Leonardo S., Almeida, Maria Ritta A., Pereira, Ricardo B., Galhardo, Luis C. S., and Gomes Carneiro, Regina Maria D.
- Subjects
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ROOT-knot nematodes , *PEPPERS , *DISEASE resistance of plants , *PLANT genes , *DEFOLIATION - Abstract
Meloidogyne enterolobii (= M. mayaguensis) has been reported as a potential threat to tomato (Solanum lycopersicum) and pepper (Capsicum spp.) crops in tropical and subtropical areas. Of particular concern with this nematode is its ability to overcome the resistance mediated by the tomato Mi-1 gene as well as by some of the Me genes in Capsicum. In the present work, we report for the first time the occurence of M. enterolobii infecting Capsicum annuum plants carrying the Me1 and Me3/Me7 genes under plastic house systems in Brasília-DF (Central Brazil). Plants of the commercial rootstock hybrid 'Snooker' (a pyramid of the genes Me1 and Me3/ Me7) infected by M. enterolobii (esterase phynotype M2) exhibited overall yellowing, severe wilt symptoms, premature defoliation, and root rot accompanied by profuse root galling. To our knowledge, this is the first report of M. enterolobii infection in root-knot resistant Capsicum rootstocks in Central Brazil, thus expanding the geographical distribution of this pathogen in this host species. [ABSTRACT FROM AUTHOR]
- Published
- 2015