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Effects of Irradiance on Photosynthesis and Activity of Protease Inhibitors in Amaranthus hypochondriacus |
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| Authors: | Y Nagamatsu-López A Blanco-Labra J Délano-Frier E Pimienta-Barrios |
| Institution: | (1) Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Las Agujas, 45110 Zapopan, Jalisco, México;(2) Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Las Agujas, 45110 Zapopan, Jalisco, México, e-mail |
| Abstract: | Amaranthus hypochondriacus plants were grown under three photosynthetic photon flux densities (PPFD). Mature plants grown at full sunlight (38.8 mol m–2 d–1) had higher maximum net photosynthetic rate (PN) and significantly higher leaf trypsin inhibitor activity than plants that developed under lower PPFD (19.4 and 12.8 mol m–2 d–1). In contrast, seeds collected from plants fully exposed to sunlight showed the lowest activity of trypsin inhibitor, higher rate of germination and susceptibility to infection by Aspergillus niger. |
| Keywords: | net photosynthetic rate seed germination trypsin inhibitor |
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