biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 46:633-634, 2003 | DOI: 10.1023/B:BIOP.0000041078.99055.93

Effects of Irradiance on Photosynthesis and Activity of Protease Inhibitors in Amaranthus hypochondriacus

Y. Nagamatsu-López1, A. Blanco-Labra1, J. Délano-Frier1, E. Pimienta-Barrios2
1 Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Las Agujas, Zapopan, Jalisco, México
2 Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Las Agujas, Zapopan, Jalisco, México, e-mail

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
Subjects: Amaranthus hypochondriacus; Aspergillus niger; germination; photon flux density, photosynthesis, protease inhibitors; protease inhibitors; trypsin inhibitor

Published: December 1, 2003  Show citation

ACS AIP APA ASA Harvard Chicago IEEE ISO690 MLA NLM Turabian Vancouver
Nagamatsu-López, Y., Blanco-Labra, A., Délano-Frier, J., & Pimienta-Barrios, E. (2003). Effects of Irradiance on Photosynthesis and Activity of Protease Inhibitors in Amaranthus hypochondriacus. Biologia plantarum, 46(4), 633-634. doi: 10.1023/B:BIOP.0000041078.99055.93
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. Bradford, M.: A rapid and sensitive method lbr the determination of microgram quantities of protein utilizing the principle of protein dye-binding.-Anal. Biochem. 72: 248-252, 1976. Go to original source...
    2. Johnson. R., Narvaez. J., An. G., Ryan. C.A.: Expression of protcinase inhibitors I and II in transgenic tobacco plants: Effects on natural defense against Alanduca sexta larvae.-P'oc. nat. Acad. Sci. USA 86: 9871-9875. 1989. Go to original source...
    3. Koiwa, II., Bressan, R., Hasegawa P.: Regulation of protease inhibitors and plant defense.-Trends Plant Sci. 2: 379-384. 1997. Go to original source...
    4. Lorito M., Broadway. R.M., Hayes. C.K., Woo, S.L., Noviello. C., Williams. D.L., Harman. G.E.: Proteinase inhibitors from plants as a novel class of fungicides.-Mol. Plant Microbe Interact. 7: 525-527. 1994. Go to original source...
    5. Mosolov. V.V., Loginova. M.D., Fedurkina. N.V., Benken. I.I.: The biological significance of proteinase inhibitors in plants.-Plant Sci. Lett. 7: 77. 1976. Go to original source...
    6. Ryan. C.A.: Proteinase inhibitors in plants: Genes for improving defenses against insects and pathogens.-Annu. Rev. Phytopathol. 28: 425-449, 1990. Go to original source...
    7. Schwertz. G., Takenaka. Y.: A spectrophotometric determination of trypsin and chymotrypsin activity.-Biochem. biophys. Acta 16:571-575. 1955. Go to original source...
    8. Walker-Simmons, M., Ryan. C.A.: Wound-induced accumulation of trypsin inhibitor activity in plant leaves. Surve of several plant genera.-Plant Physiol. 59:437-439. 1977. Go to original source...

    Return to the content