Mitochondria are the main target for oxidative damage in leaves of wheat (Triticum aestivum L.)
2004
Bartoli, Carlos Guillermo | Gomez, Facundo Martin | Martínez, Dana Ethel | Guiamet, Juan José
Photosynthesis, respiration, and other processes produce reactive oxygen species (ROS) that can cause oxidative modifications to proteins, lipids, and DNA. The production of ROS increases under stress conditions, causing oxidative damage and impairment of normal metabolism. In this work, oxidative damage to various subcellular compartments (i.e. chloroplasts, mitochondria, and peroxisomes) was studied in two cultivars of wheat differing in ascorbic acid content, and growing under good irrigation or drought. In well-watered plants, mitochondria contained 9-28-fold higher concentrations of oxidatively modified proteins than chloroplasts or peroxisomes. In general, oxidative damage to proteins was more intense in the cultivar with the lower content of ascorbic acid, particularly in the chloroplast stroma. Water stress caused a marked increase in oxidative damage to proteins, particularly in mitochondria and peroxisomes. These results indicate that mitochondria are the main target for oxidative damage to proteins under well-irrigated and drought conditions.
اظهر المزيد [+] اقل [-]Instituto de Fisiología Vegetal
اظهر المزيد [+] اقل [-]Facultad de Ciencias Naturales y Museo
اظهر المزيد [+] اقل [-]Facultad de Ciencias Agrarias y Forestales
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Universidad Nacional de La Plata