The effect of 24-epibrassinolide and clotrimazole on the adaptation of Cajanus cajan (L.) Millsp to salinity

Autor(es)

Durigan Dalio, Ronaldo Jose ^[1] ; Pinheiro, Hildete Prisco ^[2] ; Sodek, Ladaslav ^[1] ; Baptista Haddad, Claudia Regina ^[1]

Afiliação do(s) autor(es)

^[1] State Univ Campinas UNICAMP, Dept Plant Biol, Inst Biol, BR-13083970 Campinas, SP - Brazil

^[2] Univ Campinas UNICAMP, Dept Stat, Inst Math Stat & Sci Computat, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACTA PHYSIOLOGIAE PLANTARUM; v. 33, n. 5, p. 1887-1896, SEP 2011.
• Citações Web of Science: 15

Resumo

The objective of this study was to evaluate the effects of one of brassinosteroids (24-epibrassinolide) and clotrimazole, (an inhibitor of brassinosteroid synthesis) on plant growth parameters, parameters related to leaf gas exchange (photosynthetic and transpiration rates; stomatal conductance; water use efficiency), photosynthetic pigment content and osmolyte (sugars and proline) content in Cajanus cajan exposed to salinity. Salt stress-caused by NaCl treatment-affected values of all parameters analyzed. The effects were ameliorated by 24-epibrassinolide and intensified by clotrimazole. The hormone increased fresh mass of the plant, shoot dry mass, leaf area, water content of leaves and roots, photosynthetic pigments, sugar concentration, photosynthetic rate, and water use efficiency. The effects of hormone were less evident in the absence of salt. However, under this condition the application of clotrimazole affected the values of parameters studied, indicating the importance of brassinosteroid synthesis for the normal development of the plant. (AU)

• Processo FAPESP: 08/50165-8 - Efeito de brassinosteróide no crescimento e metabolismo de plantas de Cajanus cajan (L.) Millsp., submetidas a estresse salino
• Beneficiário: Claudia Regina Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Regular