Putative Role of Pith Cell Wall Phenylpropanoids in Sesamia nonagrioides (Lepidoptera: Noctuidae) Resistance

详细信息    查看全文

• 作者：Rogelio Santiago ; Ana Butron ; John T. Arnason ; Lana M. Reid ; Xose C. Souto ; and Rosa A. Malvar
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2006
• 出版时间：March 22, 2006
• 年：2006
• 卷：54
• 期：6
• 页码：2274 - 2279
• 全文大小：70K
• 年卷期：v.54,no.6(March 22, 2006)
• ISSN：1520-5118

文摘

The stem borer Sesamia nonagrioides (Lefèbvre) is the most important insect pest that attacks maize,Zea mays L., in northwestern Spain. Host plant resistance to this borer was investigated in relationto the cell wall phenylpropanoids content in the pith. Eight inbred lines that differ in resistance wereanalyzed. Three major simple phenolic acids, p-coumaric, trans-ferulic, and cis-ferulic acids, andthree isomers of diferulic acid, 8-5', 8-O-4', and 8-5'b (benzofuran form), were identified. The amountof all these compounds was correlated with the resistance level in the genotypes, with the resistantinbreds having the highest concentrations. The role of these compounds in cell wall fortification andlignification is well-documented, suggesting their possible intervention in S. nonagrioides resistance.Future studies that focus on these compounds could be useful to enhance S. nonagroides resistance.Keywords: Zea mays; Sesamia nonagrioides; resistance; phenylpropanoids; pith