Ana López-Malvar1,2, Rosa Ana Malvar3, Xose Carlos Souto4, Leonardo Dario Gomez5, Rachael Simister5, Antonio Encina6, Jaime Barros-Rios7, Sonia Pereira-Crespo8, Rogelio Santiago9,10. 1. Facultad, de Biología, Departamento de Biología Vegetal Y Ciencias del Suelo, Universidad de Vigo, As Lagoas Marcosende, 36310, Vigo, Spain. alopezmalvar@uvigo.es. 2. Agrobiología Ambiental, Calidad de Suelos Y Plantas (UVIGO), Unidad Asociada a La MBG (CSIC), Vigo, Spain. alopezmalvar@uvigo.es. 3. Misión Biológica de Galicia (CSIC), Pazo de Salcedo, Carballeira 8, 36143, Pontevedra, Spain. 4. E.E. Forestales, Dpto. Ingenieria Recursos Naturales Y Medio Ambiente, 36005, Pontevedra, Spain. 5. CNAP, Department of Biology, University of York, Heslington, YO10 5DD, York, UK. 6. Dpto. Ingeniería Y Ciencias Agrarias, Área de Fisiología Vegetal, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain. 7. BioDiscovery Institute and Department of Biological Sciences, University of North Texas, 1155 Union Circle, #311428, Denton, TX, 76203-5017, USA. 8. Laboratorio Interprofesional Galego de Análise Do Leite (LIGAL), Mabegondo, 15318, A Coruña, Abegondo, Spain. 9. Facultad, de Biología, Departamento de Biología Vegetal Y Ciencias del Suelo, Universidad de Vigo, As Lagoas Marcosende, 36310, Vigo, Spain. 10. Agrobiología Ambiental, Calidad de Suelos Y Plantas (UVIGO), Unidad Asociada a La MBG (CSIC), Vigo, Spain.
Abstract
BACKGROUND: Besides the use of maize grain as food and feed, maize stover can be a profitable by-product for cellulosic ethanol production, whereas the whole plant can be used for silage production. However, yield is reduced by pest damages, stem corn borers being one of the most important yield constraints. Overall, cell wall composition is key in determining the quality of maize biomass, as well as pest resistance. This study aims to evaluate the composition of the four cell wall fractions (cellulose, hemicellulose, lignin and hydroxycinnamates) in diverse maize genotypes and to understand how this composition influences the resistance to pests, ethanol capacity and digestibility. RESULTS: The following results can be highlighted: (i) pests' resistant materials may show cell walls with low p-coumaric acid and low hemicellulose content; (ii) inbred lines showing cell walls with high cellulose content and high diferulate cross-linking may present higher performance for ethanol production; (iii) and inbreds with enhanced digestibility may have cell walls poor in neutral detergent fibre and diferulates, combined with a lignin polymer composition richer in G subunits. CONCLUSIONS: Results evidence that there is no maize cell wall ideotype among the tested for optimal performance for various uses, and maize plants should be specifically bred for each particular application.
BACKGROUND: Besides the use of maize grain as food and feed, maize stover can be a profitable by-product for cellulosic ethanol production, whereas the whole plant can be used for silage production. However, yield is reduced by pest damages, stem corn borers being one of the most important yield constraints. Overall, cell wall composition is key in determining the quality of maize biomass, as well as pest resistance. This study aims to evaluate the composition of the four cell wall fractions (cellulose, hemicellulose, lignin and hydroxycinnamates) in diverse maize genotypes and to understand how this composition influences the resistance to pests, ethanol capacity and digestibility. RESULTS: The following results can be highlighted: (i) pests' resistant materials may show cell walls with low p-coumaric acid and low hemicellulose content; (ii) inbred lines showing cell walls with high cellulose content and high diferulate cross-linking may present higher performance for ethanol production; (iii) and inbreds with enhanced digestibility may have cell walls poor in neutral detergent fibre and diferulates, combined with a lignin polymer composition richer in G subunits. CONCLUSIONS: Results evidence that there is no maize cell wall ideotype among the tested for optimal performance for various uses, and maize plants should be specifically bred for each particular application.
Entities:
Keywords:
Cell wall; Digestibility; Maize; Pest resistance; Saccharification
Authors: Rogelio Santiago; Ana Butrón; Lana M Reid; John T Arnason; German Sandoya; Xose C Souto; Rosa A Malvar Journal: J Agric Food Chem Date: 2006-11-29 Impact factor: 5.279
Authors: Jaime Barros-Rios; Rosa A Malvar; Hans-Joachim G Jung; Mirko Bunzel; Rogelio Santiago Journal: Phytochemistry Date: 2012-08-30 Impact factor: 4.072
Authors: Gautam Sarath; Bruce Dien; Aaron J Saathoff; Kenneth P Vogel; Robert B Mitchell; Han Chen Journal: Bioresour Technol Date: 2011-07-29 Impact factor: 9.642
Authors: Muyang Li; Marlies Heckwolf; Jacob D Crowe; Daniel L Williams; Timothy D Magee; Shawn M Kaeppler; Natalia de Leon; David B Hodge Journal: J Exp Bot Date: 2015-02-20 Impact factor: 6.992