Cientistas descobrem padrão de Voronoi em folhas da planta chinesa do dinheiro

14 de maio de 2026

Reportado por IA

Pesquisadores identificaram um padrão geométrico natural, conhecido como diagrama de Voronoi, nas folhas da planta chinesa do dinheiro. A descoberta revela como a planta organiza seus poros e nervuras utilizando princípios comuns em planejamento urbano e design de redes.

Uma equipe do Cold Spring Harbor Laboratory mapeou os poros minúsculos e as nervuras em loop nas folhas da Pilea peperomioides. Eles descobriram que as estruturas dividem o espaço naturalmente ao redor de pontos centrais da mesma forma que os diagramas de Voronoi fazem na matemática e na ciência da computação. O professor associado Saket Navlakha liderou o trabalho com a ex-estudante de pós-graduação Cici Zheng e o colaborador Przemysław Prusinkiewicz.

EPFL study links mitochondrial “pearling” to the even spacing of mtDNA nucleoids

14 de abril de 2026 Reportado por IA Imagem gerada por IA Verificado

Scientists at EPFL report that a transient shape change in mitochondria—known as “pearling,” in which the organelle briefly forms bead-like constrictions—can redistribute clusters of mitochondrial DNA (mtDNA) into more evenly spaced nucleoids. The work, published April 2, 2026 in Science, suggests the process is triggered by calcium influx into mitochondria and may help explain how cells maintain robust mtDNA organization, a feature implicated in a range of mitochondrial-related disorders.

Chemists discover bizarre half-Möbius molecular shape

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Hornwort's RbcS-STAR protein clusters Rubisco for more efficient photosynthesis

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An international team including researchers from Cornell University, the Boyce Thompson Institute, the University of Edinburgh, and others has uncovered how hornwort plants use a modified protein, RbcS-STAR, to cluster the key photosynthetic enzyme Rubisco into pyrenoid-like compartments. This mechanism boosts carbon capture and could enhance crop yields by up to 60 percent while reducing needs for water and fertilizers.

quinta-feira, 23 de abril de 2026, 19:13h

Cientistas descobrem padrão de Voronoi em folhas da planta chinesa do dinheiro

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