New achievements in scientific research of University of science and technology of China

Why are megaloblasts rare in nature? Through the research on the heterogeneity of structure and physiological function of different parts of tropical giant leaves, the researchers of the University of science and technology of China found that the edge of the leaves of plants may be burned by high temperature and "dry" in sunny weather, which revealed the mystery of the scarcity of giant leaves from the perspective of plant physiology The research results have been published in the international authoritative academic journal Public Science Library · synthesis What are the main factors that determine the maximum growth area of plant leaves? What are the differences in structure and function of different parts of giant leaves? Researchers from the school of life sciences, University of science and technology of China and Xishuangbanna Tropical Botanical Garden studied the heterogeneity of structure and physiological function of different parts of leaves of typical tropical giant leaf plant taro with a leaf diameter of 1 meter The results showed that, because of the decrease of water conducting function and gas exchange function at the edge of the leaves, and the thick water vapor boundary layer of the large leaves, the heat dissipation at the edge of the leaves was inhibited, and the temperature near the edge of the leaves growing in the open air was 8.8 ℃ higher than that in the middle of the leaves in the sunny afternoon, resulting in the phenomenon of high temperature burn and "dry" at the edge of some leaves The physiological function of the edge of the leaf was inhibited, which restricted the continuous expansion of the leaf area.