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In this study MYB family related transcription factor (TF) was cloned and characterized from Bambusa emeiensis and tentatively named as “BeMYB680”. We selected the TFs from bamboo because of its potentials for future improvement in terms of transgenic plants. Bamboo is fast-growing species and provides a very good podium because of its adoptable genomics to harsh climatic conditions. The BeMYB680 was sequenced (Liuhe Gene Technology Co., Ltd, Beijing) and submitted to NCBI GenBank under accession No. (MG763924). BeMYB680 have 1146bp open reading frame (ORF) that encodes a protein of 381 amino acids. Transactivation analysis and subcellular localization assay revealed that BeMYB680 is a transcriptional activator and localized in the nucleus. BeMYB680 was up-regulated when treated with ABA, PEG, NaCl, and H2O2; while down-regulated with Na2SO4 indicating its key role in abiotic stresses particularly to the best of our knowledge it is first time to clone BeMYB680 form Bambusa emeiensis. [ABSTRACT FROM AUTHOR]

Nitrogen (N), an essential macronutrient for crop growth and development, is well known for its economic losses and environmental hazards due to imbalanced application. Oat (Avena nuda L.), a food and fodder crop, is well adapted to marginal soils and requires minimum water and nutrients to produce biomass. A hydroponic experiment was conducted in China Agricultural University, Beijing, China to evaluate the morphological and physiological adaptations of oat to organic N (ON) and low N (LN) with respect to chemical N (CK as control). The results have shown that oat responded to different nitrogen supplies with response to LN having been the dominant one. Lowest SPAD value, net photosynthesis rate, transpiration rate, gas exchange and stomatal conductance showed that the oat was under LN stress. Highest level of root dry mass, as indicated by increased R/S ratio and C/N ratio, was at the cost of minimum nitrogen utility as depicted by increased nitrogen utilization efficiency in roots under LN. Accumulation of total soluble proteins and sugars elaborated the carbon allocation to nitrogen deprived roots. As a result of sufficient biomass provision in LN root, total root length increased which was coupled with increased concentrations of indole-3-acetic acid, gibberellic acid and zeatin riboside whereas decreased concentration of abscisic acid. Overall, oat is found to be a nitrogen use efficient crop which responded to LN through enhanced root system through biomass accumulation by the provision of nitrogen metabolites. [ABSTRACT FROM AUTHOR]