Karl Arens, German-born Brazilian plant
physiologist and ecologist (Munsterschwarzach,
Bayern 01 January 1902 – São Carlos,
São Paulo State 1981) ACHIEVEMENTS
Observed that substances loss through cuticle was a generalized phenomenon in plants Die kutikuläre
exkretion der laubblatter. Jahrb. Wiss. Bot. 80:284-300, 1934 Developed a new method for direct determination of osmotic pressure in a plant cell with a gauge Um novo methodo de determinação directa de pressão osmótica numa
cellula vegetal com manômetro (1938) Proposed the hypothesis of active membrane (1948) The “active membrane”:
an hypothesis to explain the transfer of water and solutes in plants, as
depending upon respiration. Rev. Canad. Biol. 8:157-72, 1949 Developed Arens technique or callose test Prova de calose por meio da microscopia a luz fluorescente com
applicações do método. Lilloa
18:71-75, 1949 Uma doença da ervilha (Pisum sativum L.) causada por fatores meteorologicos. Lilloa 21 (1949) Proposed oligotrophic scleromorphism in Cerrado plants O cerrado como vegetação oligotrófica. Bol. Fac. Cien. Letras Univ. S. Paulo Ser. Bot. 224(15): 59-77, 1958 Ein polaritaets und steurungsmechanismus der Zelle. Protoplasma (1960) |
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