Sub-tropical urban environment affecting content and composition of non-structural carbohydrates of Lolium multiflorum ssp italicum cv. Lema

Autor(es)

Sandrin, Carla Zuliani ^[1] ; Leone Figueiredo-Ribeiro, Rita de Cassia ^[1] ; Machado de Carvalho, Maria Angela ^[1] ; Carvalho Delitti, Welington Braz ^[2] ; Domingos, Marisa ^[1]

Afiliação do(s) autor(es)

^[1] Inst Bot, BR-01061970 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Biociencias, Dept Ecol, BR-05422970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Environmental Pollution; v. 156, n. 3, p. 915-921, DEC 2008.
• Citações Web of Science: 6

Resumo

This study analyzed the relationship between environmental factors, especially air pollution and climatic conditions, and non-structural carbohydrates (NSC) in plants of Lolium multiflorum exposed during 10 consecutive periods of 28 days at a polluted site (Congonhas) and at a reference site in Sao Paulo city (Brazil). After exposure, NSC composition and leaf concentrations of Al, Fe. Cu, Zn, Pb and Cd were measured. The seasonal pattern of NSC accumulation was quite similar in both sites, but plants at Congonhas showed higher concentrations of these compounds, especially fructans of low and medium degree of polymerization. Regression analysis showed that NSC in plants growing at the polluted site were explained by variations on temperature and leaf concentration of Fe (positive effect), as well as relative humidity and particulate material (negative effect). NSC in the standardized grass culture, in addition to heavy metal accumulation, may indicate stressing conditions in a sub-tropical polluted environment. (C) 2008 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 00/06422-4 - Caesalpinia echinata (Pau-brasil) da semente à madeira, um modelo para estudos de plantas arbóreas tropicais brasileiras
• Beneficiário: Rita de Cassia Leone Figueiredo Ribeiro
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 05/04139-7 - Carboidratos de plantas tropicais como moduladores de processos ecofisiológicos e indicadores de respostas a estresses ambientais
• Beneficiário: Marcia Regina Braga
• Modalidade de apoio: Auxílio à Pesquisa - Temático