Luz fortalece tecidos vegetais, mas limita o crescimento em ervilhas

13 de abril de 2026

Reportado por IA

Pesquisadores da Universidade Metropolitana de Osaka descobriram que a exposição à luz aumenta a adesão entre a casca externa e os tecidos internos de caules jovens de ervilhas por meio do acúmulo de ácido p-cumárico. Esse reforço fortalece a estrutura da planta, mas restringe a expansão e o crescimento. As descobertas, publicadas na Physiologia Plantarum, sugerem possíveis aplicações para melhorar a resiliência das culturas.

Uma equipe liderada pelo professor Kouichi Soga, da Universidade Metropolitana de Osaka, examinou caules jovens de ervilhas para entender o papel da luz no desenvolvimento das plantas. Eles usaram uma técnica especializada para medir a ligação entre a camada epidérmica e os tecidos internos. As plantas cultivadas sob luz apresentaram uma adesão significativamente mais forte em comparação com aquelas mantidas no escuro. O professor Soga observou: 'Comparados com plantas cultivadas no escuro, os tecidos epidérmicos e internos de plantas cultivadas sob luz estão ligados de forma mais firme. Esse fenômeno nunca havia sido relatado antes'.

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quarta-feira, 01 de abril de 2026, 06:48h