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玉米“抗寒”与“高效吸收养分”难两全?我国科学家找到改善新路径
Xin Hua She· 2026-02-26 06:38
Group 1 - The core research reveals the key molecular mechanism of maize in coordinating stress adaptation and nutrient utilization, focusing on the role of the protein NLA in low-temperature response and phosphorus absorption regulation [1][3] - The research team developed a new variant of NLA that acts as a molecular hub, integrating cold and phosphorus regulation, which enhances maize cold resistance while suppressing root phosphorus absorption [3] - This achievement provides a new theoretical framework and technical pathway for crop improvement, moving from optimizing single traits to systematic environmental adaptation design, with potential applications in enhancing the efficient use of other key soil nutrients like nitrogen [3] Group 2 - The study utilized artificial intelligence-assisted protein design and gene editing technologies to create a new maize germplasm that combines strong cold resistance and high phosphorus utilization efficiency, contributing to stable and increased grain production [3] - The findings were published in the international academic journal "Nature," highlighting the significance of the research in addressing challenges posed by climate change and multiple stress environments for crop varieties [1][3]
中国农业科学院/河南大学合作发表最新Cell论文
生物世界· 2025-07-01 23:57
Core Viewpoint - The article discusses the significance of synonymous mutations in genetic research, particularly their role in cucumber domestication through epitranscriptomic regulation, challenging traditional views on these mutations [2][3]. Group 1: Research Findings - The study published in the journal Cell demonstrates that synonymous mutations can regulate important traits in cucumber by altering m6A modifications and mRNA structural conformations [2][3]. - The research identifies two closely linked genes, YTH1 and ACS2, that interact epistatically to influence cucumber fruit length [5][9]. - A specific synonymous mutation, 1287C>T in the ACS2 gene, is identified as a pathogenic mutation that disrupts m6A methylation and alters RNA structure, leading to changes in fruit length [6][9]. Group 2: Genetic Mechanisms - The YTH1 gene encodes an m6A reader protein, while the ACS2 gene encodes a rate-limiting enzyme for ethylene synthesis in plants, both of which are crucial for cucumber domestication [5][9]. - The study reveals that the wild-type cucumber's ACS2 1287C leads to m6A modification and a loose RNA structure, while the cultivated cucumber's ACS2 1287T results in a compact RNA structure, affecting protein levels and fruit length [6][9].