Ecological strategies of Al-accumulating and non-accumulating functional groups from the cerrado sensu stricto

Autor(es)

de Souza, Marcelo C. ^{[1, 2]} ; Bueno, Paula C. P. ^[3] ; Morellato, Leonor P. C. ^[4] ; Habermann, Gustavo ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Ciencias Farmaceut, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias, Dept Bot, Programa Posgrad Ciencias Biol Biol Vegetal, UNESP, BR-13506900 Rio Claro, SP - Brazil

^[3] Univ Estadual Paulista, Inst Quim, Dept Quim Organ, UNESP, BR-14800900 Araraquara, SP - Brazil

^[4] Univ Estadual Paulista, Inst Biociencias, Dept Bot, UNESP, BR-13506900 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Anais da Academia Brasileira de Ciências; v. 87, n. 2, p. 813-823, JUN 2015.
• Citações Web of Science: 13

Resumo

The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al, total flavonoids and polyphenols; as well as the specific leaf area (SLA) on young and mature leaves within and between the groups. In Al-accumulating plants, leaf flushed throughout the year, mainly in May and September; for non-accumulating plants, leaf flushing peaked at the dry-wet seasons transition. However, these behaviors could not be associated with strategies for building up concentrations of defense compounds in leaves of any functional groups. Al-accumulating plants showed low leaf nutrient concentrations, while non-accumulating plants accumulated more macronutrients and produced leaves with high SLA since the juvenile leaf phase. This demonstrates that the increase in SLA is slower in Al-accumulating plants that are likely to achieve SLA values comparable to the rest of the plant community only in the wet season, when sunlight capture is important for the growth of new branches. (AU)

• Processo FAPESP: 10/07809-1 - Abordagens multivariadas e moleculares no estudo fenológico de grupos funcionais do cerrado
• Beneficiário: Marcelo Claro de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 07/59779-6 - Estudo comparativo da diversidade e da fenologia reprodutiva e vegetativa entre borda e interior num fragmento de cerrado em itirapina, sao paulo.
• Beneficiário: Leonor Patricia Cerdeira Morellato
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/13762-3 - Estudo comparativo entre as savanas australianas e brasileiras: o alumínio edáfico pode ser considerado um fator de sobrevivências para as espécies vegetais?
• Beneficiário: Marcelo Claro de Souza
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 10/51307-0 - Diversidade florística e padrões sazonais dos campos rupestres e cerrado
• Beneficiário: Leonor Patricia Cerdeira Morellato
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE