“双一流”背景下高等农业院校有机化学基础课程教学新模式的构建及实践

四川农业大学作物学入选一流学科建设,有机化学作为农林专业创新型人才培养的战略支撑,如何把握机遇,找准定位,深化有机化学基础课教学改革,为农林类学科培养基础扎实、创新意识强的优质生源是我们长期面临的挑战。以一流学科建设为导向,通过调研确立双一流建设期有机化学基础课实施性教学方案,构建有机化学立体化教学资源库,实践“兴趣培养–思维开发–自主协作学习”课堂教学模式与“基础技能–综合应用–探索创新”梯度式实践教学模式,在农学、林学、动物医学等共35个专业推广,提升创新型人才培养质量,有效支撑我校一流学科建设,为同类农林高校有机化学基础课教学提供参考。

The genetic basis of the leafy seadragon's unique camouflage morphology and avenues for its efficient conservation derived from habitat modeling

The leafy seadragon certainly is among evolution’s most“beautiful and wonderful”species aptly named for its extraordinary camouflage mimicking its coastal seaweed habitat.However,limited information is known about the genetic basis of its phenotypes and conspicuous camouflage.Here,we revealed genomic signatures of rapid evolution and positive selection in core genes related to its camouflage,which allowed us to predict population dynamics for this species.Comparative genomic analysis revealed that seadragons have the smallest olfactory repertoires among all ray-finned fishes,suggesting adaptations to the highly specialized habitat.Other positively selected and rapidly evolving genes that serve in bone development and coloration are highly expressed in the leaf-like appendages,supporting a recent adaptive shift in camouflage appendage formation.Knock-out of bmp6 results in dysplastic intermuscular bones with a significantly reduced number in zebrafish,implying its important function in bone formation.Global climate change-induced loss of seagrass beds now severely threatens the continued existence of this enigmatic species.The leafy seadragon has a historically small population size likely due to its specific habitat requirements that further exacerbate its vulnerability to climate change.Therefore,taking climate change-induced range shifts into account while developing future protection strategies.