An isolated, synthetic, or recombinant nucleic acid comprising (a) a nucleic acid sequence as set forth in SEQ ID NO: 99； (b) a nucleic acid sequence having a sequence identity of at least 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95% , 96%, 97%, 98%, 99%, or greater with SEQ No. 99, where the nucleic acid encodes at least one polypeptide having a pectate lyase activity, (c) a nucleic acid that hybridizes under conditions stringent hybridization with a nucleic acid comprising a sequence as set forth in SEQ ID NO: 99, where the stringent hybridization conditions comprise a washing step comprising a 0.2X SSC wash at a temperature of about 65 ° C for approximately 15 minutes, and where the nucleic acid encodes at least one polypeptide that has a pectate lyase activity； (d) a nucleic acid encoding a polypeptide having a sequence as set forth in SEQ ID NO: 100, wherein the nucleic acid encodes a polypeptide having a pectate lyase activity； (e) the nucleic acid sequence of (a), (b), (c) or (d) but lacking a nucleic acid sequence encoding a signal sequence； (f) the nucleic acid sequence of any one of (a) to (e), further comprising a nucleic acid sequence encoding a heterologous peptide or polypeptide； or g) a nucleic acid sequence completely complementary to any of (a) to (f).Un ácido nucleico aislado, sintético, o recombinante que comprende (a) una secuencia de ácidos nucleicos como se establece en la SEC ID Nº: 99； (b) una secuencia de ácidos nucleicos que tiene una identidad de secuencia de al menos un 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, o mayor con la SEQ Nº: 99, donde el ácido nucleico codifica al menos un polipéptido que tiene una actividad de pectato liasa, (c) un ácido nucleico que se hibrida en condiciones de hibridación rigurosas con un ácido nucleico que comprende una secuencia como se establece en la SEC ID Nº: 99, donde las condiciones de hibridación rigurosas comprenden una etapa de lavado que comprende un lavado
