Dear Editor,With the inevitable trend of global warming,it is urgent to understand how plants sense and respond to temperature increases for designing new crop varieties that can tolerate high ambient temperature.In A...Dear Editor,With the inevitable trend of global warming,it is urgent to understand how plants sense and respond to temperature increases for designing new crop varieties that can tolerate high ambient temperature.In Arabidopsis thaliana,high ambient temperature promotes hypocotyl elongation in seedlings and stimulates petiole elongation and hyponasty in rosette leaves.These changes in architecture are collectively tenned thermomorphogenesis.Thennomorphogenesis protects seedling meristems from the heat reflected from the ground and reduces the heat flux among leaves in adult plants.展开更多
Apical hook is a simple curved structure formed at the upper part of hypocotyls when dicot seeds germinate in darkness.The hook structure is transient but essential for seedlings’survival during soil emergence due to...Apical hook is a simple curved structure formed at the upper part of hypocotyls when dicot seeds germinate in darkness.The hook structure is transient but essential for seedlings’survival during soil emergence due to its efficient protection of the delicate shoot apex from mechanical injury.As a superb model system for studying plant differential growth,apical hook has fascinated botanists as early as the Darwin age,and significant advances have been achieved at both the morphological and molecular levels to understand how apical hook development is regulated.Here,we will mainly summarize the research progress at these two levels.We will also briefly compare the growth dynamics between apical hook and hypocotyl gravitropic bending at early seed germination phase,with the aim to deduce a certain consensus on their connections.Finally,we will outline the remaining questions and future research perspectives for apical hook development.展开更多
基金supported by the National Natural Science Foundation of China (31470375)the Fok Ying Tong Education Foundation (161023)+1 种基金the open funds of the State Key Laboratory of Plant Physiology and Biochemistry (SKLPPBKF1802)the Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘Dear Editor,With the inevitable trend of global warming,it is urgent to understand how plants sense and respond to temperature increases for designing new crop varieties that can tolerate high ambient temperature.In Arabidopsis thaliana,high ambient temperature promotes hypocotyl elongation in seedlings and stimulates petiole elongation and hyponasty in rosette leaves.These changes in architecture are collectively tenned thermomorphogenesis.Thennomorphogenesis protects seedling meristems from the heat reflected from the ground and reduces the heat flux among leaves in adult plants.
基金supported by National Natural Science Foundation of China(32230008 to H.G.)Shenzhen Science and Technology Program(KQTD20190929173906742 to H.G.)Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes(2019KSYS006 to H.G.)。
文摘Apical hook is a simple curved structure formed at the upper part of hypocotyls when dicot seeds germinate in darkness.The hook structure is transient but essential for seedlings’survival during soil emergence due to its efficient protection of the delicate shoot apex from mechanical injury.As a superb model system for studying plant differential growth,apical hook has fascinated botanists as early as the Darwin age,and significant advances have been achieved at both the morphological and molecular levels to understand how apical hook development is regulated.Here,we will mainly summarize the research progress at these two levels.We will also briefly compare the growth dynamics between apical hook and hypocotyl gravitropic bending at early seed germination phase,with the aim to deduce a certain consensus on their connections.Finally,we will outline the remaining questions and future research perspectives for apical hook development.
