title: Construction and analysis of an SSH cDNA library of early heat-induced genes of Vigna aconitifolia variety RMO-40.
abstract: Moth bean ( Vigna aconitifolia  (Jacq.) Marechal) is an important grain legume crop grown in rain fed areas of hot desert regions of Thar, India, under scorching sun rays with very little supplementation of water. An SSH cDNA library was generated from leaf tissues of V. aconitifolia var. RMO-40 exposed to an elevated temperature of 42 °C for 5 min to identify early-induced genes. A total of 488 unigenes (114 contigs and 374 singletons) were derived by cluster assembly and sequence alignment of 738 ESTs; out of 206 ESTs (28%) of unknown proteins, 160 ESTs (14%) were found to be novel to moth bean. Only 578 ESTs (78%) showed significant BLASTX similarity (<1 × 10(-6)) in the NCBI non-redundant database. Gene ontology functional classification terms were retrieved for 479 (65%) sequences, and 339 sequences were annotated with 165 EC codes and mapped to 68 different KEGG pathways. Four hundred and fifty-two ESTs were further annotated with InterProScan (IPS), and no IPS was assigned to 153 ESTs. In addition, the expression level of 27 ESTs in response to heat stress was evaluated through semiquantitative RT-PCR assay. Approximately 20 different signaling genes and 16 different transcription factors have been shown to be associated with heat stress in moth bean for the first time.
authors.affiliation: Plant Biotechnology Centre, Swami Keshwanand Rajasthan Agricultural University, Bikaner, Rajasthan, India.
authors.forename: Sakshi
authors.initials: S
authors.lastname: Rampuria
authors.forename: Uma
authors.initials: U
authors.lastname: Joshi
authors.forename: Paramita
authors.initials: P
authors.lastname: Palit
authors.forename: Amit A
authors.initials: AA
authors.lastname: Deokar
authors.forename: Raju R
authors.initials: RR
authors.lastname: Meghwal
authors.forename: T
authors.initials: T
authors.lastname: Mohapatra
authors.forename: R
authors.initials: R
authors.lastname: Srinivasan
authors.forename: K V
authors.initials: KV
authors.lastname: Bhatt
authors.forename: Ramavtar
authors.initials: R
authors.lastname: Sharma
mesh_terms: D001483:Base Sequence; D017931:DNA Primers / Q000235:genetics; D020224:Expressed Sequence Tags; D007887:Fabaceae / Q000235:genetics*; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000235:genetics*; D015723:Gene Library; D017343:Genes, Plant / Q000235:genetics*; D005838:Genotype; D006358:Hot Temperature; D058977:Molecular Sequence Annotation; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D012333:RNA, Messenger / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D013312:Stress, Physiological
chemical_list: D017931:DNA Primers; D012333:RNA, Messenger