Detection of siderophores in endophytic bacteria Methylobacterium spp. associated with Xylella fastidiosa subsp. pauca - Lacava, Paulo Teixeira; Silva-Stenico, Maria Estela; Araújo, Welington Luiz de; Simionato, Ana Valéria Colnaghi; Carrilho, Emanuel; Tsai, Siu Mui; Azevedo, João Lúcio de (Pesquisa Agropecuária Brasileira, 2008)