Abstract:
:The combined action of the inhibitors antimycin A and cyanide with benzohydroxamic acid indicates the presence of a cyanide-resistant pathway of respiration in chick pea (Cicer arietinum L.) seeds. The appearance of this pathway takes place during germination. During the first 12 hours of germination, the respiration is predominantly cyanide-sensitive, showing after this time a shift to an "alternate" respiration which is sensitive to benzohydroxamic acid, reaching the maximal cyanide resistance between 72 and 96 hours of germination. The appearance of the alternate pathway is initiated by high O(2) concentrations and depends on cytoplasmic protein synthesis, since its appearance is inhibited by cycloheximide but not by chloramphenicol. Actinomycin D has no effect on the appearance of the alternate pathway. Our results indicate, in agreement with other authors, that the branching point is located between the flavoproteins and cytochromes b, probably at the level of ubiquinone, but the possibility of more than one branching point of the electron flow is also considered.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Burguillo Pde L,Nicolás Gdoi
10.1104/pp.60.4.524subject
Has Abstractpub_date
1977-10-01 00:00:00pages
524-7issue
4eissn
0032-0889issn
1532-2548journal_volume
60pub_type
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