Liupanshui Normal University, School of Biological Sciences and Technology, Liupanshui, China.
Zhengzhou Normal University, Bioengineering Research Center, Zhengzhou, Henan, P.R. China.
Braz J Biol. 2022 Jan 31;82:e253898. doi: 10.1590/1519-6984.253898. eCollection 2022.
High temperature stress events are critical factors inhibiting crop yield. Meanwhile, world population is growing very rapidly and will be reached up to 9 billion by 2050. To feed increasing world population, it is challenging task to increase about 70% global food productions. Food crops have significant contribution toward global food demand and food security. However, consequences from increasing heat stress events are demolishing their abilities to survive and sustain yield when subjected to extreme high temperature stress. Therefore, there is dire need to better understand response and tolerance mechanism of food crops following exposure to heat stress. Here, we aimed to provide recent update on impact of high temperature stress on crop yield of food crops, pollination, pollinators, and novel strategies for improving tolerance of food crop under high temperature stress. Importantly, development of heat-resistant transgenic food crops can grant food security through transformation of superior genes into current germplasm, which are associated with various signaling pathways as well as epigenetic regulation in response to extreme high temperature stress.
高温胁迫事件是抑制作物产量的关键因素。与此同时，世界人口增长非常迅速，到 2050 年将达到 90 亿。为了养活不断增长的世界人口，增加全球 70%左右的粮食产量是一项艰巨的任务。粮食作物对全球粮食需求和粮食安全有重大贡献。然而，不断增加的高温胁迫事件的后果正在破坏它们在遭受极端高温胁迫时生存和维持产量的能力。因此，迫切需要更好地了解粮食作物在受到热胁迫后的响应和耐受机制。在这里，我们旨在提供关于高温胁迫对粮食作物产量、授粉、传粉者的影响的最新信息，以及提高粮食作物高温胁迫耐受性的新策略。重要的是，通过将与各种信号通路以及对极端高温胁迫的表观遗传调控相关的优异基因转化为当前的种质资源，开发耐热转基因粮食作物可以保障粮食安全。
