title: Identification, phylogeny, and transcript of chitinase family genes in sugarcane.
abstract: Chitinases are pathogensis-related proteins, which play an important role in plant defense mechanisms. The role of the sugarcane chitinase family genes remains unclear due to the highly heterozygous and aneuploidy chromosome genetic background of sugarcane. Ten differentially expressed chitinase genes (belonging to class I~VII) were obtained from RNA-seq analysis of both incompatible and compatible sugarcane genotypes during Sporisorium scitamineum challenge. Their structural properties and expression patterns were analyzed. Seven chitinases (ScChiI1, ScChiI2, ScChiI3, ScChiIII1, ScChiIII2, ScChiIV1 and ScChiVI1) showed more positive with early response and maintained increased transcripts in the incompatible interaction than those in the compatible one. Three (ScChiII1, ScChiV1 and ScChiVII1) seemed to have no significant difference in expression patterns between incompatible and compatible interactions. The ten chitinases were expressed differentially in response to hormone treatment as well as having distinct tissue specificity. ScChiI1, ScChiIV1 and ScChiVII1 were induced by various abiotic stresses (NaCl, CuCl2, PEG and 4 °C) and their involvement in plant immunity was demonstrated by over-expression in Nicotiana benthamiana. The results suggest that sugarcane chitinase family exhibit differential responses to biotic and abiotic stress, providing new insights into their function.
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Yachun
authors.initials: Y
authors.lastname: Su
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Xu
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Zhuqing
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Yuting
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Sugarcane Biology and Genetic Breeding, Fujian Agriculture and Forestry University, Ministry of Agriculture, Fuzhou 350002, China.
authors.forename: Youxiong
authors.initials: Y
authors.lastname: Que
mesh_terms: D002688:Chitinases / Q000737:chemistry / Q000235:genetics*; D060467:Disease Resistance / Q000235:genetics / Q000276:immunology; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D054884:Host-Pathogen Interactions / Q000235:genetics; D005810:Multigene Family; D009928:Organ Specificity / Q000235:genetics; D010802:Phylogeny; D054730:Protein Interaction Domains and Motifs; D012333:RNA, Messenger / Q000235:genetics; D031786:Saccharum / Q000145:classification* / Q000235:genetics* / Q000276:immunology; D017422:Sequence Analysis, DNA; D014158:Transcription, Genetic; D059467:Transcriptome
chemical_list: D012333:RNA, Messenger; D002688:Chitinases