Valliappan Karuppiah1,2, Lu Zhixiang1,2, Hongyi Liu1,2, Murugappan Vallikkannu1,2, Jie Chen3,4. 1. School of Agriculture and Biology, Shanghai Jiao Tong University, 800, Dongchuan Road, Minhang, Shanghai, 200240, PR China. 2. The State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, PR China. 3. School of Agriculture and Biology, Shanghai Jiao Tong University, 800, Dongchuan Road, Minhang, Shanghai, 200240, PR China. jiechen59@sjtu.edu.cn. 4. The State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, PR China. jiechen59@sjtu.edu.cn.
Abstract
BACKGROUND: Retention of agricultural bio-mass residues without proper treatment could affect the subsequent plant growth. In the present investigation, the co-cultivation of genetically engineered T. asperellum and B. amyloliquefaciens has been employed for multiple benefits including the enrichment of lignocellulose biodegradation, plant growth, defense potential and disease resistance. RESULTS: The Vel1 gene predominantly regulates the secondary metabolites, sexual and asexual development as well as cellulases and polysaccharide hydrolases productions. Overexpression mutant of the Trichoderma asperellum Vel1 locus (TA OE-Vel1) enhanced the activity of FPAase, CMCase, PNPCase, PNPGase, xylanase I, and xylanase II through the regulation of transcription regulating factors and the activation of cellulase and xylanase encoding genes. Further, these genes were induced upon co-cultivation with Bacillus amyloliquefaciens (BA). The co-culture of TA OE-Vel1 + BA produced the best composition of enzymes and the highest biomass hydrolysis yield of 89.56 ± 0.61%. The co-culture of TA OE-Vel1 + BA increased the corn stover degradation by the secretion of cellulolytic enzymes and maintained the C/N ratio of the corn stover amended soil. Moreover, the TA OE-Vel1 + BA increased the maize plant growth, expression of defense gene and disease resistance against Fusarium verticillioides and Cohilohorus herostrophus. CONCLUSION: The co-cultivation of genetically engineered T. asperellum and B. amyloliquefaciens could be utilized as a profound and meaningful technique for the retention of agro residues and subsequent plant growth.
BACKGROUND: Retention of agricultural bio-mass residues without proper treatment could affect the subsequent plant growth. In the present investigation, the co-cultivation of genetically engineered T. asperellum and B. amyloliquefaciens has been employed for multiple benefits including the enrichment of lignocellulose biodegradation, plant growth, defense potential and disease resistance. RESULTS: The Vel1 gene predominantly regulates the secondary metabolites, sexual and asexual development as well as cellulases and polysaccharide hydrolases productions. Overexpression mutant of the Trichoderma asperellum Vel1 locus (TA OE-Vel1) enhanced the activity of FPAase, CMCase, PNPCase, PNPGase, xylanase I, and xylanase II through the regulation of transcription regulating factors and the activation of cellulase and xylanase encoding genes. Further, these genes were induced upon co-cultivation with Bacillus amyloliquefaciens (BA). The co-culture of TA OE-Vel1 + BA produced the best composition of enzymes and the highest biomass hydrolysis yield of 89.56 ± 0.61%. The co-culture of TA OE-Vel1 + BA increased the corn stover degradation by the secretion of cellulolytic enzymes and maintained the C/N ratio of the corn stover amended soil. Moreover, the TA OE-Vel1 + BA increased the maize plant growth, expression of defense gene and disease resistance against Fusarium verticillioides and Cohilohorus herostrophus. CONCLUSION: The co-cultivation of genetically engineered T. asperellum and B. amyloliquefaciens could be utilized as a profound and meaningful technique for the retention of agro residues and subsequent plant growth.
Entities:
Keywords:
B. amyloliquefaciens; Cellulase; Co-cultivation; Lignocellulose degradation; T. asperellum; Vel1
Authors: Razieh Karimi Aghcheh; Zoltán Németh; Lea Atanasova; Erzsébet Fekete; Melinda Paholcsek; Erzsébet Sándor; Benigno Aquino; Irina S Druzhinina; Levente Karaffa; Christian P Kubicek Journal: PLoS One Date: 2014-11-11 Impact factor: 3.240
Authors: Rüdiger Reichel; Jing Wei; Muhammad S Islam; Christoph Schmid; Holger Wissel; Peter Schröder; Michael Schloter; Nicolas Brüggemann Journal: Front Plant Sci Date: 2018-06-28 Impact factor: 5.753