Relationship Among Phenolic Contents, Seed Predation, and Physical Seed Traits in Mimosa bimucronata Plants

Autor(es)

Kestring, Debora ^[1] ; Menezes, Luciana C. C. R. ^[1] ; Tomaz, Camila A. ^[1] ; Lima, Giuseppina P. P. ^[2] ; Rossi, Marcelo N. ^[3]

Afiliação do(s) autor(es)

^[1] UNESP, Dept Bot, IB, BR-18618000 Botucatu, SP - Brazil

^[2] UNESP, Dept Chem & Biochem, IB, BR-18618000 Botucatu, SP - Brazil

^[3] Univ Fed Sao Paulo, Dept Biol Sci, BR-09941510 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PLANT BIOLOGY; v. 52, n. 6, p. 569-576, DEC 2009.
• Citações Web of Science: 12

Resumo

Phenolic contents were compared between Mimosa bimucronata seeds from infested and non-infested fruits to assess induced defense response. By measuring leg length of the bruchid beetle Acanthoscelides schrankiae, we verified whether phenolic contents affected bruchid body size. In addition, the relationship between physical seed traits and phenolic contents was examined. Results showed that seeds from infested fruits had significantly greater phenolic contents than seeds from non-infested fruits, which suggested induced defense. Body size variation in A. schrankiae was marginally nonsignificant according to phenolic contents among plants (negative trend), indicating that phenols may interfere directly with bruchid performance. Seeds that were more irregularly shaped had significantly greater phenolic contents than those that were more uniform. Therefore, the most perfectly spherical seeds may be more vulnerable to seed predation, and our results suggest that the production of phenolic compounds was increased in infested fruits, which in turn may affect A. schrankiae development. (AU)

• Processo FAPESP: 04/10329-0 - Efeito da luz, da temperatura e da predação na germinação de sementes de Mimosa bimucronata (DC.) Kuntze (Mimosaceae)
• Beneficiário: Camila de Aquino Tomaz
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 05/57999-3 - Efeito da predação por Acanthoscelides schrankiae (Coleoptera:Bruchidae) e de altas temperaturas na germinação de sementes de Mimosa bimucronata (DC) Kuntze (Fabaceae:Mimosoideae)
• Beneficiário: Luciana Cristina Candido Ribeiro de Menezes
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 04/06737-6 - Dinâmica espacial e temporal em populações de bruquídeos (Coleoptera: Bruchidae) predadores de sementes de Mimosa bimucronata (DC) Kuntze (Mimosaceae) e seus parasitóides
• Beneficiário: Marcelo Nogueira Rossi
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores